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1. Effect of surfactants on phosphorus release and acidogenic fermentation of waste activated sludge containing different aluminium phosphate forms

Author:
Qian Ping; Jingyi Zhang; Ruijie Tang; Shuting Liao; Zhipeng Zhang; Yongmei Li
Source:
Chemosphere 2022 v.287 pp. 132213
ISSN:
0045-6535
Subject:
Citrobacter; acetates; activated sludge; adenosine triphosphate; aluminum; aluminum phosphate; citrates; fermentation; phosphorus; propionic acid; rhamnolipids; surfactants; wastewater treatment; Alps region
Abstract:
... The effects of different surfactants (rhamnolipid, trehalolipid and citrate) on phosphorus (P) release and acidogenic fermentation of waste activated sludge (WAS) containing different aluminium phosphate forms (AlPO₄, Al(PO₃)₃) were investigated. Results showed that rhamnolipid was the most effective surfactant to release P from aluminum phosphates (AlPs)-rich sludge. Al(PO₃)₃ was easier to releas ...
DOI:
10.1016/j.chemosphere.2021.132213

2. Soil chemical extractions can alter potassium coordination in agricultural soils: A combined wet chemical and X-ray absorption spectroscopic approach

Author:
Emma J. Schmidt; Giovanni Zanoni; Amee Bumguardner; Branimir Šegvić; Katie Lewis; Dalton Abdala; Matthew G. Siebecker
Source:
Geoderma 2022 v.422 pp. 115914
ISSN:
0016-7061
Subject:
X-ray absorption spectroscopy; X-ray diffraction; agricultural land; aluminum; ammonium acetate; bioavailability; citrates; dithionite; feldspar; illite; loamy sand soils; montmorillonite; potassium; sandy clay loam soils; silicon; smectite; soil profiles; soil texture; sorption
Abstract:
... Soil wet chemical extractions are used to determine plant available potassium (K); yet problems with K bioavailability still persist in soils. Bioavailability is directly related to how elements are bonded and coordinated to the solid phases of soil. However, there is a critical knowledge gap with respect to identifying the in situ, solid-phase K coordination environments in soils treated with wet ...
DOI:
10.1016/j.geoderma.2022.115914

3. A novel single step method to rapidly screen for metal contaminants in beverages, a case study with aluminum

Author:
Durgasha C. Poudyal; Vikram Narayanan Dhamu; Anirban Paul; Manish Samson; Sriram Muthukumar; Shalini Prasad
Source:
Environmental technology & innovation 2022 v.28 pp. 102691
ISSN:
2352-1864
Subject:
aluminum; ascorbic acid; carbon; case studies; catalysts; citrates; detection limit; dielectric spectroscopy; electrochemistry; electrodes; environmental technology; food quality; fruits; gold; orange juice; pH; portable equipment; tomato juice
Abstract:
... Portable electroanalytical devices for metal ion sensing towards assessing food quality is an emerging high impact research area. Herein, we demonstrated for the first time, a portable electrochemical platform to measure the threshold aluminum content in packaged acidic food products. The sensor consists of a gold screen printed electrode (Au-SPE) modified with the exfoliated Pd/C catalyst (5% Pd ...
DOI:
10.1016/j.eti.2022.102691

4. Alleviating aluminum toxicity in plants: Implications of reactive oxygen species signaling and crosstalk with other signaling pathways

Author:
Alok Ranjan; Ragini Sinha; Tilak Raj Sharma; Arunava Pattanayak; Anil Kumar Singh
Source:
Physiologia plantarum 2021 v.173 no.4 pp. 1765-1784
ISSN:
0031-9317
Subject:
acid soils; aluminum; antioxidant activity; ascorbate peroxidase; ascorbic acid; catalase; cell cycle; cell walls; citrates; gene expression; glutathione transferase; malates; oxalates; pH; phenolic compounds; plant response; reactive oxygen species; root growth; signal transduction; superoxide dismutase; sustainable agriculture; toxicity
Abstract:
... Aluminum (Al) toxicity is a major limiting factor for plant growth and productivity in acidic soil. At pH lower than 5.0 (pH < 5.0), the soluble and toxic form of Al (Al³⁺ ions) enters root cells and inhibits root growth and uptake of water and nutrients. The organic acids malate, citrate, and oxalate are secreted by the roots and chelate Al³⁺ to form a non‐toxic Al‐OA complex, which decreases the ...
DOI:
10.1111/ppl.13382

5. Aluminum toxicity and aluminum stress-induced physiological tolerance responses in higher plants

Author:
Devendra Kumar Chauhan; Vaishali Yadav; Marek Vaculík; Walter Gassmann; Sharon Pike; Namira Arif; Vijay Pratap Singh; Rupesh Deshmukh; Shivendra Sahi; Durgesh Kumar Tripathi
Source:
Critical reviews in biotechnology 2021 v.41 no.5 pp. 715-730
ISSN:
1549-7801
Subject:
aluminum; aquaporins; biotechnology; citrates; extrusion; genes; hydrogen peroxide; hydroxyl radicals; macrophages; malates; nutrient uptake; oxalates; pH; secretion; soil solution; stress tolerance; superoxide anion; toxic substances; toxicity
Abstract:
... Aluminum (Al) precipitates in acidic soils having a pH < 5.5, in the form of conjugated organic and inorganic ions. Al-containing minerals solubilized in the soil solution cause several negative impacts in plants when taken up along with other nutrients. Moreover, a micromolar concentration of Al present in the soil is enough to induce several irreversible toxicity symptoms such as the rapid and t ...
DOI:
10.1080/07388551.2021.1874282

6. Applying foliar magnesium enhances wheat growth in acidic soil by stimulating exudation of malate and citrate

Author:
Mohammad Golam Kibria; Louise Barton; Zed Rengel
Source:
Plant and soil 2021 v.464 no.1-2 pp. 621-634
ISSN:
0032-079X
Subject:
Triticum aestivum; acid soils; aluminum; chlorophyll; citrates; exudation; genotype; leaves; magnesium; malates; soil pH; toxicity; vegetative growth; water use efficiency; wheat
Abstract:
... AIMS: Aluminium toxicity in acidic soils adversely affects wheat growth. Foliar-applied magnesium (Mg) contributes to mitigating soil acidity stress in wheat, but the mechanisms are unknown. This study explored the mechanism of foliar-Mg mediated enhancement of wheat growth in acidic soil. METHODS: Two contrasting near-isogenic wheat (Triticum aestivum L.) genotypes differing in Al resistance (Al- ...
DOI:
10.1007/s11104-021-04984-z

7. Conserved functions of MATE transporters and their potential to enhance plant tolerance to aluminium toxicity

Author:
Debojyoti Kar; Lavanya Bhagavatula; Arka Dutta; Sourav Datta
Source:
Journal of plant biochemistry and biotechnology 2021 v.30 no.4 pp. 1008-1015
ISSN:
0971-7811
Subject:
Archaea; DNA; algae; aluminum; amino acid sequences; arable soils; aspartic acid; biotechnology; cell walls; citrates; cytoskeleton; drought; evolution; extrusion; exudation; pH; plant biochemistry; root growth; soil solution; toxic substances; toxicity
Abstract:
... Almost half of the world’s arable land has acidic pH. Aluminum salts present in acid soils dissociate to release Al³⁺ ions in the soil solution that inhibit root growth causing severe loss in crop yields. Aluminium toxicity accounts for the second highest loss in plant productivity after drought. Aluminium in high doses causes damage to the plant cell wall, cytoskeleton and DNA. One of the ways by ...
DOI:
10.1007/s13562-021-00743-4

8. Development of clean performance-tunable waterborne polyurethane using acetyl tributyl citrate for transferable holographic films

Author:
Xin-Gui Li; Yun-Bin Xie; Mei-Rong Huang; Tomokazu Umeyama; Hiroshi Imahori
Source:
Journal of cleaner production 2021 v.279 pp. 123496
ISSN:
0959-6526
Subject:
additives; adhesion; aluminum; boiling point; catalysts; chemical structure; citrates; composite films; composite materials; dispersants; gas chromatography; hydrophilicity; lubricants; nanosheets; nuclear magnetic resonance spectroscopy; plasticizers; polymerization; polyurethanes; stickiness; surface tension; tensile strength; thermal stability; thermogravimetry; toxicity; viscosity; volatile organic compounds
Abstract:
... Scalable and transparent polyether-based waterborne polyurethane (WPU) thin films that adhere firmly to Al nanofilm but not to PET film without release agents have been designed and prepared. In order to realize cleaner production, eco-friendly acetyl tributyl citrate (ATBC) instead of toxic additives like N-methylpyrrolidone was introduced into polymerization system as both an effective dispersan ...
DOI:
10.1016/j.jclepro.2020.123496

9. Enhanced aluminum tolerance in sugarcane: evaluation of SbMATE overexpression and genome-wide identification of ALMTs in Saccharum spp.

Author:
Ana Paula Ribeiro; Felipe Vinecky; Karoline Estefani Duarte; Thaís Ribeiro Santiago; Raphael Augusto das Chagas Noqueli Casari; Aline Forgatti Hell; Bárbara Andrade Dias Brito da Cunha; Polyana Kelly Martins; Danilo da Cruz Centeno; Patricia Abrão de Oliveira Molinari; Geraldo Magela de Almeida Cançado; Jurandir Vieira de Magalhães; Adilson Kenji Kobayashi; Wagner Rodrigo de Souza; Hugo Bruno Correa Molinari
Source:
BMC plant biology 2021 v.21 no.1 pp. 300
ISSN:
1471-2229
Subject:
Saccharum; Sorghum bicolor; aluminum; citrates; exudation; genes; genome-wide association study; malates; root growth; sugarcane; toxicity; Brazil
Abstract:
... BACKGROUND: A major limiting factor for plant growth is the aluminum (Al) toxicity in acidic soils, especially in tropical regions. The exclusion of Al from the root apex through root exudation of organic acids such as malate and citrate is one of the most ubiquitous tolerance mechanisms in the plant kingdom. Two families of anion channels that confer Al tolerance are well described in the literat ...
DOI:
10.1186/s12870-021-02975-x

10. How candidate genes respond to aluminum toxicity in Citrus x limonia Osbeck?

Author:
Carolina M. S. Silva; Alexander Banguela-Castillo; Douglas S. Domingues; Gustavo Habermann
Source:
Theoretical and Experimental Plant Physiology 2022 v.34 no.3 pp. 409-423
ISSN:
2197-0025
Subject:
Citrus; aluminum; auxins; cell division; citrate (si)-synthase; citrates; drought; exudation; gene expression regulation; metabolism; nitrates; pH; pectins; root growth; rootstocks; sequence analysis; suberin; toxic substances; toxicity; transcription (genetics); Brazil
Abstract:
... In acidic soils, toxic aluminum (Al) inhibits root growth of sensitive species, including Citrus plants. In the Americas, rainfed Citrus plantations are highly dependent on unique rootstocks, such as the ‘Mandarin’ lime (Citrus x limonia Osbeck), which is tolerant to drought although sensitive to Al. It requires yearly lime application to grow on soils that are acidic (pH < 5.0) and rich in Al, es ...
DOI:
10.1007/s40626-022-00253-1

11. Loss of LaMATE impairs isoflavonoid release from cluster roots of phosphorus‐deficient white lupin

Author:
Yaping Zhou; Philipp Olt; Benjamin Neuhäuser; Narges Moradtalab; William Bautista; Claudia Uhde‐Stone; Günter Neumann; Uwe Ludewig
Source:
Physiologia plantarum 2021 v.173 no.3 pp. 1207-1220
ISSN:
0031-9317
Subject:
Lupinus albus; aluminum; citrates; extrusion; genes; genetic markers; genistein; malates; mutants; oocytes; sap; secretion; soil; toxic substances; toxicity; xylem
Abstract:
... White lupin (Lupinus albus L.) forms brush‐like root structures called cluster roots under phosphorus‐deficient conditions. Clusters secrete citrate and other organic compounds to mobilize sparingly soluble soil phosphates. In the context of aluminum toxicity tolerance mechanisms in other species, citrate is released via a subgroup of MATE/DTX proteins (multidrug and toxic compound extrusion/detox ...
DOI:
10.1111/ppl.13515

12. Remediation of As-contaminated soils using citrate extraction coupled with electrochemical removal

Author:
Xiong Yang; Lihu Liu; Yi Wang; Guohong Qiu
Source:
Science of the total environment 2022 v.817 pp. 153042
ISSN:
0048-9697
Subject:
adsorption; aluminum; anodes; arsenic; birnessite; cathodes; citrates; electric potential difference; electrochemistry; environment; ferrihydrite; hydrolysis; leachates; manganese monoxide; remediation; rhodochrosite
Abstract:
... Arsenic (As) pollution of soils poses serious threats to the ecological environment. In this study, organic acid (citrate) washing and electrochemical removal (manganese oxide cathode) were combined to remediate highly As-contaminated soils, and the effect of voltage was investigated as well. Citrate could extract the As bound to iron and aluminum oxides and enhance As mobility by indirectly reduc ...
DOI:
10.1016/j.scitotenv.2022.153042

13. ZmMATE1 improves grain yield and yield stability in maize cultivated on acid soil

Author:
Renato C. C. Vasconcellos; Flávia F. Mendes; Antônio Carlos de Oliveira; Lauro J. M. Guimarães; Paulo E. P. Albuquerque; Marcos O. Pinto; Beatriz A. Barros; Maria Marta Pastina; Jurandir V. Magalhaes; Claudia T. Guimaraes
Source:
Crop science 2021 v.61 no.5 pp. 3497-3506
ISSN:
0011-183X
Subject:
acid soils; alleles; aluminum; citrates; corn; cultivars; filling period; food availability; germplasm; grain yield; nutrient solutions; quantitative trait loci; toxicity
Abstract:
... The development of aluminum (Al)‐tolerant cultivars is a complementary strategy to overcome the constraints caused by Al toxicity on acid soils and can contribute positively to the food supply for the growing global population. A major Al tolerance quantitative trait locus in maize is controlled by a citrate transporter encoded by ZmMATE1. Our goal was to evaluate the impact of the superior allele ...
DOI:
10.1002/csc2.20575

14. The role of solute transporters in aluminum toxicity and tolerance

Author:
Debojyoti Kar; Ajar Anupam Pradhan; Sourav Datta
Source:
Physiologia plantarum 2021 v.171 no.4 pp. 638-652
ISSN:
0031-9317
Subject:
acid soils; aluminum; ammonium; apoplast; aquaporins; calcium; citrates; extrusion; magnesium; malates; membrane potential; nitrates; potassium; rhizosphere; root growth; solutes; toxic substances; toxicity; vacuoles
Abstract:
... The prevalence of aluminum ions (Al³⁺) under acidic soil conditions inhibits primary root elongation and hinders plant growth and productivity. Al³⁺ alters the membrane potential, displaces critical ions in the apoplast and disrupts intracellular ionic concentrations by targeting membrane‐localized solute transporters. Here, we provide an overview of how Al³⁺ affects the activities of several solu ...
DOI:
10.1111/ppl.13214

15. Assessing poorly crystalline and mineral-organic species by extracting Al, Fe, Mn, and Si using (citrate-) ascorbate and oxalate

Author:
Thilo Rennert; Jan Dietel; Stefan Heilek; Reiner Dohrmann; Tim Mansfeldt
Source:
Geoderma 2021 v.397 pp. 115095
ISSN:
0016-7061
Subject:
allophane; aluminum; citrates; clay; iron; manganese; oxalates; pyrite; silicon; soil types; solubilization; species identification
Abstract:
... Poorly crystalline and mineral-organic species are commonly assessed by oxalate (Ox) extraction of aluminium (Al), iron (Fe), manganese (Mn), and silicon (Si). Drawbacks regarding selectivity towards analytical targets led to test alternatively, but mostly with topsoils, citrate-ascorbate (CA), combined with a separate citrate extraction. Here, we tested the extraction by Ox, CA, and citrate with ...
DOI:
10.1016/j.geoderma.2021.115095

16. Comprehensive characterization of the ALMT and MATE families on Populus trichocarpa and gene co-expression network analysis of its members during aluminium toxicity and phosphate starvation stresses

Author:
Thiago Bergamo Cardoso; Renan Terassi Pinto; Luciano Vilela Paiva
Source:
3 Biotech 2020 v.10 no.12 pp. 525
ISSN:
2190-572X
Subject:
Populus trichocarpa; aluminum; citrates; drugs; extrusion; genes; malates; phosphates; rhizosphere; starvation; toxicity; toxins; transcription (genetics); transcriptomics; trees
Abstract:
... Aluminium (Al) toxicity and phosphate deficit on soils are some of the main problems of modern agriculture and are usually associated. Some plants are able to overcome these stresses through exuding organic acids on the rhizosphere, such as citrate and malate, which are exported by MATE (Multi drug and toxin extrusion) and ALMT (Aluminium-activated malate transporter) transporters, respectively. D ...
DOI:
10.1007/s13205-020-02528-3

17. GhMATE1 expression regulates Aluminum tolerance of cotton and overexpression of GhMATE1 enhances acid soil tolerance of Arabidopsis

Author:
Atreyee Kundu; Markkandan Ganesan
Source:
Current plant biology 2020 v.24 pp. 100160
ISSN:
2214-6628
Subject:
Arabidopsis; acid soils; aluminum; citrates; cotton; excretion; extrusion; genes; lateral roots; malates; oxalates; rhizosphere; root growth; soil quality; stress tolerance; toxic substances; toxicity
Abstract:
... The ionic form of Aluminum (Al³⁺) is one of the dangerous metals to the plants under acid soil condition. A principal functional tool of plant Al tolerance encompasses Al-induced stimulation of membrane transporters, which accelerates the organic acid release from the root region. The released organic acid (usually citrate, oxalate and malate) form stable and nontoxic complexes with Al in the rhiz ...
DOI:
10.1016/j.cpb.2020.100160

18. Interactive effects of pH and aluminum on the secretion of organic acid anions by roots and related metabolic factors in Citrus sinensis roots and leaves

Author:
Tao-Yu Yang; Yi-Ping Qi; Hui-Yu Huang; Feng-Lin Wu; Wei-Tao Huang; Chong-Ling Deng; Lin-Tong Yang; Li-Song Chen
Source:
Environmental pollution 2020 v.262 pp. 114303
ISSN:
0269-7491
Subject:
Citrus sinensis; acid soils; aluminum; anions; carbon; citrates; exudation; fructose; glucose; malates; metabolism; models; nutrient solutions; roots; secretion; seedlings; soil pH; soil pollution; soil-plant interactions; starch; sucrose
Abstract:
... Low pH and aluminum (Al)-toxicity often coexist in acidic soils. Citrus sinensis seedlings were treated with nutrient solution at a pH of 2.5, 3.0, 3.5 or 4.0 and an Al concentration of 0 or 1 mM for 18 weeks. Thereafter, malate, citrate, isocitrate, acid-metabolizing enzymes, and nonstructural carbohydrates in roots and leaves, and release of malate and citrate from roots were measured. Al concen ...
DOI:
10.1016/j.envpol.2020.114303

19. LaALMT1 mediates malate release from phosphorus‐deficient white lupin root tips and metal root to shoot translocation

Author:
Yaping Zhou; Benjamin Neuhäuser; Günter Neumann; Uwe Ludewig
Source:
Plant, cell and environment 2020 v.43 no.7 pp. 1691-1706
ISSN:
0140-7791
Subject:
CRISPR-Cas systems; Lupinus albus; Xenopus; aluminum; citrates; environment; genes; genetically modified organisms; hydroponics; iron; malates; mutants; oocytes; phosphorus; plasma membrane; potassium; sap; stele; xylem
Abstract:
... Under phosphorus (P) deficiency, Lupinus albus (white lupin) releases large amounts of organic acid anions from specialized root structures, so‐called cluster or proteoid roots, to mobilize and acquire sparingly soluble phosphates from a restricted soil volume. The molecular mechanisms underlying this release and its regulation are, however, poorly understood. Here, we identified a gene belonging ...
DOI:
10.1111/pce.13762

20. Metabolic acclimation supports higher aluminium-induced secretion of citrate and malate in an aluminium-tolerant hybrid clone of Eucalyptus

Author:
Wannian Li; Patrick M. Finnegan; Qin Dai; Dongqiang Guo; Mei Yang
Source:
BMC plant biology 2021 v.21 no.1 pp. 14
ISSN:
1471-2229
Subject:
Eucalyptus grandis; acclimation; aconitate hydratase; aluminum; citrate (si)-synthase; citrates; cycloheximide; excretion; hybrids; hydroponics; isocitrate dehydrogenase; malates; malic enzyme; metabolism; pH; phosphoenolpyruvate carboxylase; protein synthesis inhibitors; secretion; toxicity; wood
Abstract:
... BACKGROUND: Eucalyptus is the main plantation wood species, mostly grown in aluminized acid soils. To understand the response of Eucalyptus clones to aluminum (Al) toxicity, the Al-tolerant Eucalyptus grandis × E. urophylla clone GL-9 (designated “G9”) and the Al-sensitive E. urophylla clone GL-4 (designated “W4”) were employed to investigate the production and secretion of citrate and malate by r ...
DOI:
10.1186/s12870-020-02788-4

21. OsGERLP: A novel aluminum tolerance rice gene isolated from a local cultivar in Indonesia

Author:
Miftahudin Miftahudin; Dewi Indriyani Roslim; Miftahul Huda Fendiyanto; Rizky Dwi Satrio; Ahmad Zulkifli; Eka Indah Umaiyah; Tatik Chikmawati; Yohana Caecilia Sulistyaningsih; Suharsono Suharsono; Alex Hartana; Henry T. Nguyen; J. Perry Gustafson
Source:
Plant physiology and biochemistry 2021 v.162 pp. 86-99
ISSN:
0981-9428
Subject:
acid soils; aluminum; biochemistry; citrates; cultivars; genes; rice; root growth; rye; secretion; tobacco; Indonesia
Abstract:
... There is a decrease in the land available for rice cultivation due to the rapid conversion to urban uses. Subsequently, acid soil could be an alternative land cultivating rice, but will require the use of aluminum (Al)-tolerant rice varieties. This Al tolerance trait is genetically controlled, and there is a need to discover more genes needed to develop Al-tolerant rice. Therefore, the objective o ...
DOI:
10.1016/j.plaphy.2021.02.019

22. ZmMATE6 from maize encodes a citrate transporter that enhances aluminum tolerance in transgenic Arabidopsis thaliana

Author:
Hanmei Du; Peter R. Ryan; Chan Liu; Hongjie Li; Wanpeng Hu; Weina Yan; Ying Huang; Wenzhu He; Bowen Luo; Xiao Zhang; Shibin Gao; Shufeng Zhou; Suzhi Zhang
Source:
Plant science 2021 v.311 pp. 111016
ISSN:
0168-9452
Subject:
Arabidopsis thaliana; aluminum; citrates; corn; extrusion; genes; pH; toxic substances; toxicity; transport proteins
Abstract:
... The yields of cereal crops grown on acidic soils are often reduced by aluminum (Al) toxicity because the prevalence of toxic Al³⁺ cations increases as pH falls below 5.0. The Al-dependent release of citrate from resistant lines of maize is controlled by ZmMATE1 which encodes a multidrug and toxic compound extrusion (MATE) transporter protein. ZmMATE6 is another member of this family in maize whose ...
DOI:
10.1016/j.plantsci.2021.111016

23. An exclusion mechanism is epistatic to an internal detoxification mechanism in aluminum resistance in Arabidopsis

Author:
Yuqi Wang; Wancong Yu; Yu Cao; Yanfei Cai; Sangbom M. Lyi; Weiwei Wu; Yan Kang; Cuiyue Liang; Jiping Liu
Source:
BMC plant biology 2020 v.20 no.1 pp. 122
ISSN:
1471-2229
Subject:
Arabidopsis; aluminum; biochemical pathways; cell walls; citrates; epistasis; exudation; genetic relationships; malates; plant root cells; root tips
Abstract:
... BACKGROUND: In Arabidopsis, the aluminum (Al) exclusion mechanism is mainly facilitated by ALMT1-mediated malate exudation and MATE-mediated citrate releases from the root. Recently, we have demonstrated that coordinated functioning between an ALMT1-mediated Al exclusion mechanism, via exudation of malate from the root tip, and a NIP1;2-facilitated internal detoxification mechanism, via removal of ...
DOI:
10.1186/s12870-020-02338-y

24. A multidrug and toxic compound extrusion (MATE) transporter modulates auxin levels in root to regulate root development and promotes aluminium tolerance

Author:
Neha Upadhyay; Debojyoti Kar; Sourav Datta
Source:
Plant, cell and environment 2020 v.43 no.3 pp. 745-759
ISSN:
0140-7791
Subject:
Arabidopsis; aluminum; auxins; biosynthesis; citrates; disease resistance; ethylene; extrusion; exudation; genes; growth retardation; homeostasis; lateral roots; mutants; plasma membrane; root epidermis; root growth; root hairs; root tips; secondary metabolites; seedlings; toxic substances; transporters
Abstract:
... MATE (multidrug and toxic compound extrusion) transporters play multiple roles in plants including detoxification, secondary metabolite transport, aluminium (Al) tolerance, and disease resistance. Here we identify and characterize the role of the Arabidopsis MATE transporter DETOXIFICATION30. AtDTX30 regulates auxin homeostasis in Arabidopsis roots to modulate root development and Al‐tolerance. DT ...
DOI:
10.1111/pce.13658

25. AhFRDL1-mediated citrate secretion contributes to adaptation to iron deficiency and aluminum stress in peanuts

Author:
Wei Qiu; Nanqi Wang; Jing Dai; Tianqi Wang; Leon V Kochian; Jiping Liu; Yuanmei Zuo
Source:
Journal of experimental botany 2019 v.70 no.10 pp. 2873-2886
ISSN:
1460-2431
Subject:
Arachis hypogaea; aluminum; breeding; citrates; exudation; gene overexpression; genes; genetic markers; iron; leaves; metal tolerance; mutants; nutrient deficiencies; peanuts; root tips; secretion; stele; toxicity; translocation (plant physiology); transporters; xylem
Abstract:
... Although citrate transporters are involved in iron (Fe) translocation and aluminum (Al) tolerance in plants, to date none of them have been shown to confer both biological functions in plant species that utilize Fe-absorption Strategy I. In this study, we demonstrated that AhFRDL1, a citrate transporter gene from peanut (Arachis hypogaea) that is induced by both Fe-deficiency and Al-stress, partic ...
DOI:
10.1093/jxb/erz089

26. Citrate synthesis and exudation confer Al resistance in alfalfa (Medicago sativa L.)

Author:
Guoli Sun; Haifeng Zhu; Shilin Wen; Lisheng Liu; Lanming Gou; Zhenfei Guo
Source:
Plant and soil 2020 v.449 no.1-2 pp. 319-329
ISSN:
0032-079X
Subject:
Medicago sativa; alfalfa; aluminum; citrate (si)-synthase; citrates; cultivars; exudation; forage legumes; growth performance; malates; root growth; toxicity
Abstract:
... AIMS: Alfalfa is the most important forage legume but sensitive to aluminum (Al), which largely limits its growth in acid soils. To improve Al resistance in alfalfa, responses to Al toxicity were investigated for understanding of the mechanisms of Al resistance in alfalfa. METHODS: Growth performance and Al resistance in forty-two cultivars was evaluated. Organic acids synthesis and exudation as w ...
DOI:
10.1007/s11104-020-04490-8

27. Distribution of Manganese(II) Chemical Forms on Soybean Roots and Manganese(II) Toxicity

Author:
Yuan LIU; Zhongyi LI; Renkou XU
Source:
Pedosphere 2019 v.29 no.5 pp. 656-664
ISSN:
1002-0160
Subject:
EDTA (chelating agent); Glycine max; absorption; acid soils; aluminum; ammonium; anions; calcium; cation exchange; citrates; hydrochloric acid; lanthanum; magnesium; malates; manganese; oxalates; pH; phytotoxicity; potassium nitrate; roots; soybeans
Abstract:
... Distribution of chemical forms of manganese(II) (Mn(II)) on plant roots may affect Mn(II) absorption by plants and toxicity of Mn(II) to plants at its high level. The chemical forms of Mn(II) on soybean roots were investigated to determine the main factors that affect their distribution and relationship with Mn(II) plant toxicity. Fresh soybean roots were reacted with Mn(II) in solutions, and Mn(I ...
DOI:
10.1016/S1002-0160(17)60413-2

28. Illumina sequencing revealed roles of microRNAs in different aluminum tolerance of two citrus species

Author:
Yang-Fei Zhou; Yan-Yu Wang; Wei-Wei Chen; Li-Song Chen; Lin-Tong Yang
Source:
Physiology and molecular biology of plants 2020 v.26 no.11 pp. 2173-2187
ISSN:
0971-5894
Subject:
Citrus sinensis; adverse effects; aluminum; cell wall components; citrates; gene expression regulation; genes; glycolysis; lateral roots; leaves; microRNA; molecular biology; nutrient solutions; phosphorus; secretion; seedlings; shoots; sulfur; superoxide anion; thiobarbituric acid; tricarboxylic acid cycle
Abstract:
... Self-germinated seedlings of Citrus sinensis and C. grandis were supplied with nutrient solution with 0 mM AlCl₃·6H₂O (control, −Al) or 1 mM AlCl₃·6H₂O (+Al) for 18 weeks. The DW (Dry weights) of leaf, stem, shoot and the whole plant of C. grandis were decreased and the ratio of root DW to shoot DW in C. grandis were increased by Al, whereas these parameters of C. sinensis were not changed by Al. ...
DOI:
10.1007/s12298-020-00895-y

29. Interactions between hydrogen sulphide and nitric oxide regulate two soybean citrate transporters during the alleviation of aluminium toxicity

Author:
Huahua Wang; Fang Ji; Yangyang Zhang; Junjie Hou; Wenwen Liu; Junjun Huang; Weihong Liang
Source:
Plant, cell and environment 2019 v.42 no.8 pp. 2340-2356
ISSN:
0140-7791
Subject:
Arabidopsis; Xenopus; aluminum; biosynthesis; citrates; enzyme activity; enzymes; exudation; genes; hydrogen sulfide; nitric oxide; oocytes; plasma membrane; proton pump; root growth; root tips; secretion; soybeans; toxicity; transgenic plants
Abstract:
... Hydrogen sulphide (H₂S) is emerging as an important signalling molecule involved in plant resistance to various stresses. However, the underlying mechanism of H₂S in aluminium (Al) resistance and the crosstalk between H₂S and nitric oxide (NO) in Al stress signalling remain elusive. Citrate secretion is a wide‐spread strategy for plants against Al toxicity. Here, two citrate transporter genes, GmM ...
DOI:
10.1111/pce.13555

30. Involvement of phosphatidylinositol metabolism in aluminum-induced malate secretion in Arabidopsis

Author:
Liujie Wu; Ayan Sadhukhan; Yuriko Kobayashi; Naohisa Ogo; Mutsutomo Tokizawa; Raj Kishan Agrahari; Hiroki Ito; Satoshi Iuchi; Masatomo Kobayashi; Akira Asai; Hiroyuki Koyama
Source:
Journal of experimental botany 2019 v.70 no.12 pp. 3329-3342
ISSN:
1460-2431
Subject:
1-phosphatidylinositol 4-kinase; Arabidopsis; aluminum; biochemical pathways; citrates; enzyme inhibitors; genes; humans; malates; metabolism; mutants; phosphatidylinositol 3-kinase; phospholipase C; protein kinases; secretion; signal transduction; tobacco; transcription (genetics); transfer DNA; ubiquitinyl hydrolase 1
Abstract:
... To identify the upstream signaling of aluminum-induced malate secretion through aluminum-activated malate transporter 1 (AtALMT1), a pharmacological assay using inhibitors of human signal transduction pathways was performed. Early aluminum-induced transcription of AtALMT1 and other aluminum-responsive genes was significantly suppressed by phosphatidylinositol 4-kinase (PI4K) and phospholipase C (P ...
DOI:
10.1093/jxb/erz179

31. Mechanisms of potassium release from calcareous soils to different salt, organic acid and inorganic acid solutions

Author:
M. Najafi-Ghiri; M. Niazi; M. Khodabakhshi; H. R. Boostani; H. R. Owliaie
Source:
Soil research 2019 v.57 no.3 pp. 301-309
ISSN:
1838-675X
Subject:
aluminum; calcareous soils; calcium; calcium carbonate; calcium chloride; cations; citrates; citric acid; flocculation; hydrochloric acid; illite; long term experiments; magnesium; microorganisms; oxalates; oxalic acid; potassium; potassium chloride; roots; smectite; soil minerals
Abstract:
... Mechanisms of potassium (K) release and fixation in calcareous soils may differ from non-calcareous soils. In the current investigation, four soils with different properties were extracted three and 10 times (45 and 150min, defined as short- and long-term respectively) with 0.025molL−1 CaCl2, HCl and oxalic and citric acid solutions and the contents of calcium (Ca), magnesium (Mg), aluminium (Al) ...
DOI:
10.1071/SR18301

32. Nitric oxide mediates aluminum-induced citrate secretion through regulating the metabolism and transport of citrate in soybean roots

Author:
Huahua Wang; Yangyang Zhang; Junjie Hou; Wenwen Liu; Junjun Huang; Weihong Liang
Source:
Plant and soil 2019 v.435 no.1-2 pp. 127-142
ISSN:
0032-079X
Subject:
H-transporting ATP synthase; aconitate hydratase; aluminum; citrate (si)-synthase; citrates; enzyme activity; enzyme inhibition; exudation; gene expression; growth retardation; metabolism; nitric oxide; plasma membrane; root growth; roots; secretion; soybeans; toxicity; transcription (genetics)
Abstract:
... AIMS: Citrate secretion is a kind of typical strategy for plant against aluminum (Al) toxicity. However, the signaling process in Al-activated citrate secretion needs to be clarified. METHODS: Physiological and biochemical methods as well as gene expression analysis were employed to examine the regulatory roles of nitric oxide (NO) in Al-activated citrate secretion in soybean roots. RESULTS: Appli ...
DOI:
10.1007/s11104-018-3879-z

33. Novel sodium silicate/polymer composite gels for the prevention of spontaneous combustion of coal

Author:
Xiaofeng Ren; Xiangming Hu; Di Xue; Yongsheng Li; Zhiang Shao; Hao Dong; Weimin Cheng; Yanyun Zhao; Lin Xin; Wei Lu
Source:
Journal of hazardous materials 2019 v.371 pp. 643-654
ISSN:
0304-3894
Subject:
Fourier transform infrared spectroscopy; aluminum; carboxymethylcellulose; citrates; coal; combustion; compression strength; cracking; cross-linking reagents; energy-dispersive X-ray analysis; fire fighting; fire prevention; heat; hydrogels; microstructure; polyacrylamide; risk; scanning electron microscopy; seepage; silica gel; sodium silicate; temperature; water holding capacity
Abstract:
... Novel gel materials are proposed for fire prevention and extinction in coal mines, where spontaneous combustion of coal continues to pose a significant risk. Cationic polyacrylamide (CPAM), anionic polyacrylamide (HPAM), and carboxymethyl cellulose (CMC) were each introduced separately into a sodium silicate (WG) gel, to obtain three gels labeled as CPAM/WG, HPAM/WG, and CMC/WG. A crosslinking age ...
DOI:
10.1016/j.jhazmat.2019.03.041

34. Role of Fe, Na and Al in Fe-Zeolite-A for adsorption and desorption of phosphate from aqueous solution

Author:
Md Saifuddin; Jiyeol Bae; Kwang Soo Kim
Source:
Water research 2019 v.158 pp. 246-256
ISSN:
0043-1354
Subject:
active sites; adsorbents; adsorption; aluminum; ammonium; aqueous solutions; citrates; desorption; hydrogen bonding; iron; ligands; metal ions; phosphates; sodium; spectroscopy; zeolites
Abstract:
... In this study, Fe-Zeolite-A as a phosphate adsorbent was synthesized by incorporating iron into the framework of Zeolite-A using ammonium iron citrate as the Fe3+source. The adsorption (in acidic condition) and desorption of phosphate (in alkaline condition) from an aqueous solution was repetitively performed for 18 times in batch test using Fe-Zeolite-A. The rate of adsorption and desorption of P ...
DOI:
10.1016/j.watres.2019.03.045

35. Sorption reduces the biodegradation rates of multivalent organic acids in volcanic soils rich in short-range order minerals

Author:
Kazumichi Fujii; Chie Hayakawa; Yoshiyuki Inagaki; Kenji Ono
Source:
Geoderma 2019 v.333 pp. 188-199
ISSN:
0016-7061
Subject:
acetates; aluminum; biodegradation; citrates; glucose; iron; malates; microbial activity; mineralization; minerals; organic matter; oxalates; soil solution; sorption; sorption isotherms; volcanic soils
Abstract:
... Sorption can limit biodegradation of low-molecular-weight organic acids (LMWOAs), while this validity needs to be accessed in volcanic soils rich in short range order (SRO) Al/Fe minerals and organic matter. We tested whether both sorption and microbial mineralization of LMWOAs are controlled by the amounts of SRO minerals and organo-Al/Fe complex in volcanic soils. We analyzed the soil solution c ...
DOI:
10.1016/j.geoderma.2018.07.020

36. Spectro-thermal characterization of the nature of sulfate groups immobilized on tetragonal zirconium oxide: Consequences of doping the oxide with Al or Mg cations

Author:
Abdallah I.M. Rabee; Gamal A.H. Mekhemer; Mohamed I. Zaki
Source:
Thermochimica acta 2019 v.674 pp. 1-9
ISSN:
0040-6031
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-radiation; acidity; aluminum; ammonium sulfate; aqueous solutions; cations; citrates; magnesium; pyridines; thermal stability; zirconium oxide
Abstract:
... The present investigation was designed to characterize influence of doping with Al or Mg ions on nature and acidity of sulfate species dispersed on tetragonal-zirconia. Pure and doped zirconias were prepared by the citrate method. Sulfating of the thus produced zirconias was carried out by impregnation with aqueous solutions of (NH4)2SO4. The material bulk structure was elucidated by X-ray powder ...
DOI:
10.1016/j.tca.2019.01.029

37. An alternative sequential extraction scheme for the determination of trace elements in ferrihydrite rich sediments

Author:
Martine Leermakers; Bao Elvis Mbachou; Angelique Husson; Vincent Lagneau; Michael Descostes
Source:
Talanta 2019 v.199 pp. 80-88
ISSN:
0039-9140
Subject:
aluminum; ammonium acetate; arsenic; buffers; cadmium; cesium; chromium; citrates; cobalt; copper; dithionite; ferrihydrite; fractionation; hydrofluoric acid; hydrogen peroxide; hydroxylamine; iron; lead; manganese; microwave treatment; mining; molybdenum; nitric acid; organic matter; oxalic acid; pH; sediments; sodium acetate; sodium pyrophosphate; strontium; uranium; zinc
Abstract:
... Sequential extraction schemes (SES) were evaluated to investigate the fractionation of Al, As, Cd, Cs, Cr, Co, Cu, Fe, Mn, Mo, Pb, Sr, U and Zn between the different mineral phases in iron oxide rich deposits of a former uranium mining site. Ineffective dissolution of iron oxide was observed when applying the BCR sequential extraction scheme. The hydroxylamine hydrochloride reagent in nitric acid ...
DOI:
10.1016/j.talanta.2019.02.053

38. An in vitro screening system to assess aluminum toxicity in sugarcane (Saccharum spp.) cultivars

Author:
S. J. Snyman; M. Naidoo; M. P. Watt; R. S. Rutherford
Source:
In vitro cellular & developmental biology 2019 v.55 no.4 pp. 403-408
ISSN:
1054-5476
Subject:
Saccharum; agricultural soils; aluminum; ammonium; citrates; crop production; cultivars; culture media; drought; exudation; in vitro studies; inheritance (genetics); lethal concentration 50; mutagenesis; mutagens; nitrates; nitrogen; nutrient use efficiency; plantlets; regrowth; roots; screening; soil pH; sugarcane; toxicity; South Africa
Abstract:
... Mutagenic breeding is an approach being developed especially for those characteristics that are not inherited through conventional genetic hybridization. Soil acidity and aluminum (Al³⁺) toxicity limit sugarcane production, particularly in leached soils in the coastal cultivation regions in South Africa. An in vitro screening procedure was developed based on plantlet re-rooting in Al³⁺-containing ...
DOI:
10.1007/s11627-019-09994-2

39. Adenosine 5′-monophosphate decreases citrate exudation and aluminium resistance in Tamba black soybean by inhibiting the interaction between 14-3-3 proteins and plasma membrane H+-ATPase

Author:
Yong Min; Chuan-Long Guo; Xiu-Ling Zhao; Lin Wang; Yong-Xiong Yu; Li-Mei Chen
Source:
Plant growth regulation 2018 v.84 no.2 pp. 285-292
ISSN:
0167-6903
Subject:
H-transporting ATP synthase; adenosine monophosphate; aluminum; citrates; enzyme activity; exudation; plasma membrane; proteins; protons; root growth; root tips; secretion; soybeans
Abstract:
... Our previous study suggested that aluminium (Al) stress increased plasma membrane (PM) H⁺-ATPase activity and citrate secretion and simultaneously enhanced the interaction between 14-3-3 proteins and phosphorylated PM H⁺-ATPase in Al-resistant Tamba black soybean (RB). Adenosine 5′-monophosphate (AMP) is known as an inhibitor of the interaction between 14-3-3 proteins and PM H⁺-ATPases. To investi ...
DOI:
10.1007/s10725-017-0339-3

40. Alleviation by abscisic acid of Al toxicity in rice bean is not associated with citrate efflux but depends on ABI5‐mediated signal transduction pathways

Author:
Wei Fan; Jia Meng Xu; Pei Wu; Zhi Xin Yang; He Qiang Lou; Wei Wei Chen; Jian Fen Jin; Shao Jian Zheng; Jian Li Yang
Source:
Journal of integrative plant biology 2019 v.61 no.2 pp. 140-154
ISSN:
1672-9072
Subject:
Arabidopsis; Vigna umbellata; abscisic acid; acid soils; aluminum; cell walls; citrates; gene expression; gene expression regulation; genes; metal tolerance; molecular biology; mutants; osmoregulation; osmotic stress; root growth; signal transduction; toxicity; transcription factors; transcriptomics
Abstract:
... Under conditions of aluminum (Al) toxicity, which severely inhibits root growth in acidic soils, plants rapidly alter their gene expression to optimize physiological fitness for survival. Abscisic acid (ABA) has been suggested as a mediator between Al stress and gene expression, but the underlying mechanisms remain largely unknown. Here, we investigated ABA‐mediated Al‐stress responses, using inte ...
DOI:
10.1111/jipb.12695

41. Aluminium detoxification in facultative (Passovia ovata (Pohl ex DC.) Kuijt and Struthanthus polyanthus Mart. - Loranthaceae) and dependent (Psittacanthus robustus (Mart.) Marloth - Loranthaceae) Al-accumulating mistletoe species from the Brazilian savanna

Author:
Marcelo Claro de Souza; Marina Corrêa Scalon; Charlotte Poschenrieder; Roser Tolrà; Tiago Venâncio; Simone Pádua Teixeira; Fernando Batista Da Costa
Source:
Phytochemistry 2018 v.153 pp. 58-63
ISSN:
0031-9422
Subject:
Loranthaceae; Miconia albicans; aluminum; calcifuges; calcium; cerrado; citrates; hosts; indigenous species; leaves; metabolic detoxification; nutrient deficiencies; oxalates; parasitism; polyphenols; savannas; tissues; toxicity
Abstract:
... Mechanisms to detoxify aluminium (Al) is a hot topic for cultivated plants. However, little information is known about the mechanisms used by native plants to deal with Al-toxicity. In Cerrado, some generalist mistletoe species, such as Passovia ovata (Pohl ex DC.) Kuijt and Struthanthus polyanthus Mart. can parasitize Al-accumulating and Al-excluding plant species without any clear symptoms of to ...
DOI:
10.1016/j.phytochem.2018.05.020

42. Characteristics of Chlorophyll Fluorescence and Antioxidant-Oxidant Balance in PEPC and PPDK Transgenic Rice under Aluminum Stress

Author:
Y. H. Zhang; E. M. Wang; T. F. Zhao; Q. Q. Wang; L. J. Chen
Source:
Russian journal of plant physiology 2018 v.65 no.1 pp. 49-56
ISSN:
1021-4437
Subject:
Oryza sativa; aluminum; chlorophyll; citrates; corn; enzyme activity; exudation; genes; growth and development; heavy metals; lipids; malates; oxalates; plant growth; rice; stress tolerance; transgenic plants
Abstract:
... Aluminum is one of the most important heavy metals inducing stress during plant growth and development. In this study, transgenic rice (Oryza sativa L., cv. Kitaake) plants expressing the maize C₄PEPC and PPDK genes were evaluated for aluminum tolerance. A 4.3 and 19.1 folds increase of PPDK and PEPC activities in transgenic rice produced increases in root exudation of oxalate, malate, and citrate ...
DOI:
10.1134/S1021443718010211

43. Characterization of CcSTOP1; a C2H2-type transcription factor regulates Al tolerance gene in pigeonpea

Author:
Abhijit Arun Daspute; Yuriko Kobayashi; Sanjib Kumar Panda; Bashasab Fakrudin; Yasufumi Kobayashi; Mutsutomo Tokizawa; Satoshi Iuchi; Arbind Kumar Choudhary; Yoshiharu Y. Yamamoto; Hiroyuki Koyama
Source:
Planta 2018 v.247 no.1 pp. 201-214
ISSN:
0032-0935
Subject:
Cajanus cajan; acid soils; aluminum; binding capacity; binding sites; breeding; citrates; excretion; gain-of-function mutation; genes; loss-of-function mutation; pigeon peas; roots; tobacco; toxic substances; transcription (genetics); transcription factors; transgenic plants
Abstract:
... MAIN CONCLUSION: Al-responsive citrate-transporting CcMATE1 function and its regulation by CcSTOP1 were analyzed using NtSTOP1 -KD tobacco- and pigeonpea hairy roots, respectively, CcSTOP1 binding sequence of CcMATE1 showed similarity with AtALMT1 promoter. The molecular mechanisms of Aluminum (Al) tolerance in pigeonpea (Cajanus cajan) were characterized to provide information for molecular breed ...
DOI:
10.1007/s00425-017-2777-6

44. Chemical, Thermal, and Spectroscopic Analysis of Organomineral Fertilizer Residue Recovered from an Oxisol

Author:
L. Rodrigo Sakurada; Antonio S. Muniz; Franciele Sato; Tadeu T. Inoue; Antônio Medina Neto; Marcelo A. Batista
Source:
Soil Science Society of America journal 2019 v.83 no.2 pp. 409-418
ISSN:
0361-5995
Subject:
Fourier transform infrared spectroscopy; Oxisols; X-ray diffraction; aluminum; ammonium; citrates; crops; diammonium phosphate; differential scanning calorimetry; manufacturing; organic matter; phosphorus; phosphorus fertilizers; soluble phosphorus; spectral analysis; total phosphorus; water solubility
Abstract:
... Core Ideas The joint use of analytical techniques helps us to better understand the characteristics and chemical processes that may influence the efficiency of fertilizers. Differential scanning calorimetry, X‐ray diffractometry, and Fourier transform infrared spectroscopy techniques are helpful in capturing the differences in compounds and mineral presence in fertilizers before and after applicat ...
DOI:
10.2136/sssaj2018.08.0294

45. Disordered structure of ZnAl2O4 phase and the formation of a Zn NCO complex in ZnAl mixed oxide catalysts for glycerol carbonylation with urea

Author:
Huy Nguyen-Phu; Eun Woo Shin
Source:
Journal of catalysis 2019 v.373 pp. 147-160
ISSN:
0021-9517
Subject:
acidity; aluminum; aluminum oxide; carbonates; catalysts; cations; citrates; glycerol; oxygen; urea; zinc; zinc oxide
Abstract:
... The effect of a disordered ZnAl2O4 spinel structure on glycerol carbonylation with urea was investigated with pure ZnAl2O4 (c-ZnAl2O4) and ZnAl mixed oxide (c-ZnAlO) prepared by a citrate complex method, and ZnAl physically-mixed oxide (p-ZnAlO). During catalysts preparation, a disordered bulk ZnAl2O4 phase generated disordered sites on the surface: the Al3+ cations substituting for Zn2+ cations a ...
DOI:
10.1016/j.jcat.2019.03.043

46. Functional characterization of three MATE genes in relation to aluminum-induced citrate efflux from soybean root

Author:
Ying Zhou; Zhengbiao Wang; Li Gong; Anle Chen; Ning Liu; Sha Li; Haoran Sun; Zhenming Yang; Jiangfeng You
Source:
Plant and soil 2019 v.443 no.1-2 pp. 121-138
ISSN:
0032-079X
Subject:
Arabidopsis; aluminum; beta-glucuronidase; cadmium; citrates; copper; extrusion; gene overexpression; genes; lanthanum; mutants; plasma membrane; root growth; roots; secretion; soybeans; staining; toxic substances; transcription (genetics); transporters
Abstract:
... BACKGROUND AND AIMS: Citrate transporters responsible for Aluminum (Al)-induced citrate efflux have not been identified in soybean. METHOD: Three soybean multi-drug and toxic compound extrusion (MATE) family genes were characterized by transcriptional expression, subcellular localization and overexpression experiments. RESULTS: GmMATE75, GmMATE79 and GmMATE87 are localized to plasma membrane. Thei ...
DOI:
10.1007/s11104-019-04192-w

47. Hydrogen production from methanol decomposition using Cu-Al spinel catalysts

Author:
Guangjun Li; Chuantao Gu; Wanbin Zhu; Xiaofen Wang; Xufeng Yuan; Zongjun Cui; Hongliang Wang; Zhixian Gao
Source:
Journal of cleaner production 2018 v.183 pp. 415-423
ISSN:
0959-6526
Subject:
aluminum; catalysts; catalytic activity; chemical degradation; citrates; clean energy; copper; coprecipitation; hydrogen; hydrogen production; methanol; oxides; potassium; surface area
Abstract:
... The development of inexpensive and effective catalysts that can produce hydrogen from methanol is attractive for the implementation of clean energy technologies. Cu-Al oxides, prepared by different methods, were tested for hydrogen production from methanol decomposition. Catalysts with spinel CuAl2O4 (copper aluminate) structure as compared with non-spinel Cu-Al oxides, are more stable, and exhibi ...
DOI:
10.1016/j.jclepro.2018.02.088

48. Mechanisms of storage and detoxification of Al in two tropical mistletoes

Author:
Marcelo Claro Souza; Marina Corrêa Scalon; Charlotte Poschenrieder; Roser Tolrà; Tiago Venâncio; Simone Pádua Teixeira; Fernando Batista Da Costa
Source:
Environmental and experimental botany 2018 v.150 pp. 37-45
ISSN:
0098-8472
Subject:
Byrsonima verbascifolia; Miconia albicans; Phoradendron; aluminum; cerrado; chelation; citrates; hosts; leaves; lifestyle; metabolic detoxification; nutrients; nutritional status; oxalates; phloem; trees; woody plants
Abstract:
... Passovia ovata (Pohl ex DC.) Kuijt and Struthanthus polyanthus Mart. are hemiparasitic mistletoes that can grow on Al-accumulating and Al-excluding woody species in the Brazilian Cerrado. It is unclear to what extent this hemiparasitic lifestyle implies facultative Al accumulation by the mistletoes and if so, what are the Al tolerance mechanisms in these species. Using a field-work experiment comp ...
DOI:
10.1016/j.envexpbot.2018.03.004

49. Optimization of phosphate recovery from urine by layered double hydroxides

Author:
Kris Dox; Maarten Everaert; Roel Merckx; Erik Smolders
Source:
Science of the total environment 2019 v.682 pp. 437-446
ISSN:
0048-9697
Subject:
X-ray diffraction; aluminum; anion exchange capacity; citrates; coprecipitation; desorption; hydroxides; magnesium; magnesium ammonium phosphate; pH; phosphorus; recycling; sorption; urine; zinc
Abstract:
... Urine contains sufficient phosphorus (P) to consider P recycling form urine as an interesting strategy. In this study, the potential of MgAl or ZnAl layered double hydroxides (LDHs) to be used in such recovery was assessed. LDHs are anion exchangers with a high P selectivity, and P-loaded LDHs have demonstrated fertiliser potential. A critical factor for efficient P recycling with LDH is the stabi ...
DOI:
10.1016/j.scitotenv.2019.05.181

50. The impact of elevated CO2 on acid-soil tolerance of hexaploid wheat (Triticum aestivum L.) genotypes varying in organic anion efflux

Author:
Jinlong Dong; James Hunt; Emmanuel Delhaize; Caixian Tang
Source:
Plant and soil 2018 v.428 no.1-2 pp. 401-413
ISSN:
0032-079X
Subject:
Triticum aestivum; acid soils; alleles; aluminum; ammonium; biomass; carbon dioxide; carbon dioxide enrichment; citrates; crops; genetic lines; genotype; hexaploidy; hydroponics; malates; plant growth; rhizosphere; root tips; shoots; soil pH; wheat; zinc
Abstract:
... BACKGROUND & AIM: It is unclear how elevated CO₂ (eCO₂) affects the response of crops to soil acidity. This study examined the effect of eCO₂ on acid-soil tolerance of hexaploid wheat genotypes that vary in Al³⁺ resistance due to differences in root efflux of citrate and malate. METHODS: Three pairs of near-isogenic lines were grown for 24–25 days under ambient CO₂ (400 µmol mol⁻¹) and eCO₂ (800 µ ...
DOI:
10.1007/s11104-018-3687-5

51. Aluminum induced physiological and proteomic responses in tea (Camellia sinensis) roots and leaves

Author:
Qingshan Xu; Yu Wang; Zhaotang Ding; Kai Fan; Dexin Ma; Yongliang Zhang; Qi Yin
Source:
Plant physiology and biochemistry 2017 v.115 pp. 141-151
ISSN:
0981-9428
Subject:
Camellia sinensis; acid soils; aluminum; antioxidants; ascorbate peroxidase; biochemical pathways; catalase; citrates; enzyme activity; glutathione transferase; glycolysis; hyperaccumulators; leaves; lignin; phenolic acids; photosynthesis; protein synthesis; proteins; proteomics; roots; tea
Abstract:
... Tea (Camellia sinensis (L.) O. Kuntze), is an aluminum (Al) hyperaccumulator and grows well in acid soils. Although Al-induced growth of tea plant has been studied, the proteomic profiles of tea plants in response to Al are unclear. In the present study, the proteomic profiles in tea roots and leaves under Al stress were investigated using iTRAQ proteomics approach. In total, 755 and 1059 differen ...
DOI:
10.1016/j.plaphy.2017.03.017

52. Characterization, genetic diversity, phylogenetic relationships, and expression of the aluminum tolerance MATE1 gene in Secale species

Author:
E. Santos; C. Benito; J. Silva-Navas; F. J. Gallego; A. M. Figueiras; O. Pinto-Carnide; M. Matos
Source:
Biologia plantarum 2018 v.62 no.1 pp. 109-120
ISSN:
0006-3134
Subject:
Secale cereale; acid soils; alleles; aluminum; barley; citrates; complementary DNA; crop production; crossing; cultivars; exons; extrusion; exudation; genetic variation; genotype; phylogeny; rye; sequence analysis; stress response; toxic substances; wheat
Abstract:
... Aluminum (Al) is the main limiting factor for crop production in acidic soils. Efflux of organic acids is one of the mechanisms that determine Al-tolerance, and an Al-activated citrate transporter (multidrug and toxic compound extrusion) MATE1 gene is involved in different species. The contribution of the rye MATE1 gene (ScMATE1) depends on the rye (Secale cereale L.) cultivars and the crosses ana ...
DOI:
10.1007/s10535-017-0749-0

53. Conventional and transgenic strategies to enhance the acid soil tolerance of barley

Author:
Jéssica Rosset Ferreira; Euclydes Minella; Carla Andréa Delatorre; Emmanuel Delhaize; Peter R. Ryan; Jorge Fernando Pereira
Source:
Molecular breeding 2018 v.38 no.1 pp. 12
ISSN:
1380-3743
Subject:
Hordeum vulgare; acid soils; alleles; aluminum; barley; citrates; cultivars; gene expression; genetic markers; genotype; germplasm; grain yield; hydroponics; screening; transgenes; transgenic plants; wheat; Antarctica; Brazil; Japan; United States
Abstract:
... The aluminum (Al³⁺) tolerance of barley cultivars predominately from Brazil was compared to that of cultivars from other countries, wild barley accessions, and a transgenic line (L5) over-expressing TaALMT1, the major Al³⁺ tolerance gene from wheat. After screening conventional germplasm for Al³⁺ tolerance in hydroponics, 18 genotypes were further characterized in a short-term soil experiment. Amo ...
DOI:
10.1007/s11032-017-0769-7

54. Degradation of citrate promotes copper co-precipitation within aluminium-(hydr)oxides in calcareous soils

Author:
Roberto Terzano; Giovanni Cuccovillo; Silvia Pascazio; Carmine Crecchio; Antonio Lettino; Saverio Fiore; Nicola Tomasi; Roberto Pinton; Tanja Mimmo; Stefano Cesco
Source:
Biology and fertility of soils 2017 v.53 no.1 pp. 115-128
ISSN:
0178-2762
Subject:
Bradyrhizobium; Pseudomonas; Sphingomonas; aluminum; bacteria; biodegradation; calcareous soils; citrates; copper; coprecipitation; environmental factors; microbial activity; nutrient availability; oxides; pH; ribosomal DNA; roots; solubility; toxicity
Abstract:
... In this study, we provide experimental evidences that in calcareous soils microbial degradation/decomposition of citrate can promote Al-(hydr)oxide precipitation concurrently decreasing copper (Cu) solubility by a coprecipitation process. Citrate is an organic acid anion commonly released by roots to increase nutrient availability or to limit Al toxicity. However, under specific environmental cond ...
DOI:
10.1007/s00374-016-1164-y

55. Effect of Gallium Exposure in Arabidopsis thaliana is Similar to Aluminum Stress

Author:
Chang Hsin-Fang; Wang Shan-Li; Yeh Kuo-Chen
Source:
Environmental Science & Technology 2017 v.51 no.3 pp. 1241-1248
ISSN:
1520-5851
Subject:
Arabidopsis thaliana; aluminum; citrates; extracellular space; gallium; granules; malates; malondialdehyde; models; risk assessment; root growth; roots; secretion; semiconductors; soil; toxicity; transporters
Abstract:
... Although gallium (Ga) is a rare element, it is widely used in semiconductor devices. Ga contamination of the environment has been found in semiconductor-producing countries. Here, the physiological and molecular impacts of Ga in the model plant Arabidopsis thaliana were investigated in medium culture. The primary symptom of Ga toxicity is inhibition of root growth. The increased production of malo ...
DOI:
10.1021/acs.est.6b05760

56. Effect of citrate on Aspergillus niger phytase adsorption and catalytic activity in soil

Author:
Malika Mezeli; Daniel Menezes-Blackburn; Timothy S. George; Courtney D. Giles; Roy Neilson; Philip M. Haygarth
Source:
Geoderma 2017 pp. -
ISSN:
0016-7061
Subject:
Aspergillus niger; Cambisols; absorption; adsorption; agricultural soils; aluminum; anions; bacteria; catalytic activity; citrates; dephosphorylation; drying; enzymatic hydrolysis; fungi; ionic strength; irrigation water; orthophosphates; phosphorus; phytases; phytic acid; root exudates; salinity; sodium; sodium chloride; soil enzymes; soil pH; soil solution
Abstract:
... Phytase enzymes from bacteria, fungus and plant root exudates are known to hydrolyse organic phosphorus (Po) to bioavailable inorganic orthophosphate in soil. Exploiting such biochemical functions in agricultural systems, offers the potential for alternative sustainable phosphorus sources. Phytase adsorption to soil particles and phytate metal complexation has been shown to inhibit phytate (InsP6) ...
DOI:
10.1016/j.geoderma.2017.06.015

57. Effect of citrate on the species and levels of Al impurities in ferrihydrite

Author:
Feng-Yi Li; Luuk Koopal; Wen-Feng Tan
Source:
Colloids and surfaces 2018 v.539 pp. 140-147
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorption; aluminum; chemical analysis; citrates; colloids; ferrihydrite; iron; molecular weight; nanoparticles; transmission electron microscopy
Abstract:
... Ferrihydrite in natural environment is commonly produced in the presence of significant amounts of Al and low molar mass organic impurities, which affect the surface reactivity of ferrihydrite depending on the impurity levels. Here, we investigated the effect of citrate on the species and levels of Al impurities in ferrihydrite. Al-bearing ferrihydrite was synthesized at different citrate/(Fe+Al) ...
DOI:
10.1016/j.colsurfa.2017.12.003

58. Facilitated citrate-dependent iron translocation increases rice endosperm iron and zinc concentrations

Author:
Ting-Ying Wu; Wilhelm Gruissem; Navreet K. Bhullar
Source:
Plant science 2018 v.270 pp. 13-22
ISSN:
0168-9452
Subject:
Estimated Average Requirement; aluminum; biofortification; brown rice; cadmium; chelating agents; citrates; endosperm; ferritin; genes; humans; iron; iron deficiency anemia; nicotianamine synthase; nutrient deficiencies; phenotype; sap; toxicity; transgenic plants; xylem; zinc
Abstract:
... Iron deficiency affects one third of the world population. Most iron biofortification strategies have focused on genes involved in iron uptake and storage but facilitating internal long-distance iron translocation has been understudied for increasing grain iron concentrations. Citrate is a primary iron chelator, and the transporter FERRIC REDUCTASE DEFECTIVE 3 (FRD3) loads citrate into the xylem. ...
DOI:
10.1016/j.plantsci.2018.02.002

59. Linking hydrogen-enhanced rice aluminum tolerance with the reestablishment of GA/ABA balance and miRNA-modulated gene expression: A case study on germination

Author:
Daokun Xu; Hong Cao; Wei Fang; Jincheng Pan; Jun Chen; Jiaofei Zhang; Wenbiao Shen
Source:
Ecotoxicology and environmental safety 2017 v.145 pp. 303-312
ISSN:
0147-6513
Subject:
abscisic acid; aluminum; antioxidants; argon (noble gases); biosynthesis; case studies; citrates; gene expression; gene expression regulation; genes; gibberellic acid; hydrogen; hydrogen production; metal tolerance; paclobutrazol; rice; seed germination; seeds; toxicity
Abstract:
... Although previous results showed that exogenous hydrogen (H2) alleviated aluminum (Al) toxicity, the detailed mechanism remains unclear. Here, we reported that the exposure of germinating rice seeds to Al triggered H2 production, followed by a decrease of GA/ABA ratio and seed germination inhibition. Compared to inert gas (argon), H2 pretreatment not only strengthened H2 production and alleviated ...
DOI:
10.1016/j.ecoenv.2017.07.055

60. Melatonin alleviates aluminium toxicity through modulating antioxidative enzymes and enhancing organic acid anion exudation in soybean

Author:
Jiarong Zhang; Bingjie Zeng; Yawen Mao; Xiangying Kong; Xinxun Wang; Ye Yang; Jie Zhang; Jin Xu; Zed Rengel; Qi Chen
Source:
Functional plant biology 2017 v.44 no.10 pp. 961-968
ISSN:
1445-4408
Subject:
Glycine max; acid soils; aluminum; citrates; enzymes; exudation; gene expression regulation; genes; growth retardation; hydrogen peroxide; malates; melatonin; phytotoxicity; plant response; root growth; roots; seedlings; soybeans; stress tolerance
Abstract:
... Aluminium (Al) toxicity is a major chemical constraint limiting plant growth and production on acidic soils. Melatonin (N-acetyl-5-methoxytryptamine) is a ubiquitous molecule that plays crucial roles in plant growth and stress tolerance. However, there is no knowledge regarding whether melatonin is involved in plant responses to Al stress. Here, we show that optimal concentrations of melatonin cou ...
DOI:
10.1071/FP17003

61. New approach to biosensing of co-enzyme nicotinamide adenine dinucleotide (NADH) by incorporation of neutral red in aluminum doped nanostructured ZnO thin films

Author:
Fidal V.T.; Chandra T.S.
Source:
Biochimica et biophysica acta 2017 v.1861 no.6 pp. 1559-1565
ISSN:
0304-4165
Subject:
Fourier transform infrared spectroscopy; NAD (coenzyme); X-ray diffraction; adsorption; aluminum; aluminum foil; blood serum; citrates; electrodes; lactic acid; nanorods; oxidation; poisoning; zinc oxide
Abstract:
... Biosensing of NADH on bare electrodes has drawbacks such as high over-potential and poisoning during the oxidation reaction. To overcome this challenge a different approach has been undertaken by incorporating neutral red (NR) in Al doped ZnO (AZO) thin films using one-pot chemical bath deposition (CBD). The surface morphology of the films was hexagonal nanorods along the c-axis, perpendicular to ...
DOI:
10.1016/j.bbagen.2017.01.001

62. Removal of Lithium Citrate from H3A for Determination of Plant Available P

Author:
Richard L. Haney; Elizabeth B. Haney; Douglas R. Smith; Michael J. White
Source:
Open journal of soil science 2017 v.7 no.11 pp. 301-314
ISSN:
2162-5360
Subject:
aluminum; ammonium nitrogen; calcium; citrates; iron; lithium; nitrate nitrogen; nutrient availability; phosphorus; potassium; root exudates; soil analysis; soil nutrients; soil pH; soil quality
Abstract:
... The soil extractant, H3A, has undergone several iterations to extract calcium (Ca), iron (Fe), aluminum (Al), potassium (K), phosphorus (P), ammonium (NH4-N) and nitrate (NO3-N) under ambient soil conditions. Few soil extractants currently used by commercial and university soil testing laboratories can perform multi-nutrient extraction without over- or under-estimating at least one nutrient. Soil ...
Handle:
10113/6764830
DOI:
10.4236/ojss.2017.711022

63. Sequestration of Aluminium(III) by different natural and synthetic organic and inorganic ligands in aqueous solution

Author:
Paola Cardiano; Rosalia Maria Cigala; Francesco Crea; Fausta Giacobello; Ottavia Giuffrè; Anna Irto; Gabriele Lando; Silvio Sammartano
Source:
Chemosphere 2017 v.186 pp. 535-545
ISSN:
0045-6535
Subject:
aluminum; aqueous solutions; carbonates; citrates; equations; fluorides; gluconates; ionic strength; lactic acid; ligands; silicates; sodium chloride; sodium nitrate; temperature; thermodynamics
Abstract:
... The speciation of Al³⁺ in aqueous solutions containing organic and inorganic ligands important from a biological (citrate (Cit³⁻), gluconate (Gluc⁻), lactate (Lac⁻), silicate (H2SiO4²⁻), carbonate (CO3²⁻), fluoride (F⁻)) and industrial (Gantrez®; polymethyl-vinyl-ether-co-maleic acids; GTZ S95 and GTZ AN169) point of view is reported. The stability constants of Al³⁺/Lᶻ⁻ complexes (Lᶻ⁻ = ligand wit ...
DOI:
10.1016/j.chemosphere.2017.08.015

64. Synthesis and characterization of poly(propylene imine)-dendrimer-grafted gold nanoparticles as nanocarriers of doxorubicin

Author:
Marzieh Golshan; Mehdi Salami-Kalajahi; Mina Mirshekarpour; Hossein Roghani-Mamaqani; Maryam Mohammadi
Source:
Colloids and surfaces 2017 v.155 pp. 257-265
ISSN:
0927-7765
Subject:
Fourier transform infrared spectroscopy; aluminum; aqueous solutions; atomic force microscopy; chemical bonding; citrates; colloids; cysteamine; doxorubicin; folic acid; hydrides; lithium; models; nanocarriers; nanogold; nanoparticles; pH; propylene; solubility; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... The aim of current work is synthesis 4th-generation-poly(propylene imine) (PPI)-dendrimer modified gold nanoparticles (Au-G4A) as nanocarriers for doxorubicin (DOX) and studying in vitro drug release kinetics from nanocarriers into different media. Accordingly, AuNPs were synthesized by reduction of chloroauric acid (HAuCl4) aqueous solution with trisodium citrate and modified with cysteamine to o ...
DOI:
10.1016/j.colsurfb.2017.04.029

65. Transcription factor WRKY22 promotes aluminum tolerance via activation of OsFRDL4 expression and enhancement of citrate secretion in rice (Oryza sativa)

Author:
Ge Zi Li; Zhan Qi Wang; Kengo Yokosho; Bing Ding; Wei Fan; Qiao Qiao Gong; Gui Xin Li; Yun Rong Wu; Jian Li Yang; Jian Feng Ma; Shao Jian Zheng
Source:
new phytologist 2018 v.219 no.1 pp. 149-162
ISSN:
0028-646X
Subject:
Oryza sativa; abiotic stress; alleles; aluminum; biotic stress; citrates; gel electrophoresis; metal tolerance; mutants; mutation; plant response; polymerase chain reaction; rice; secretion; stress tolerance; transactivators; transcriptional activation; transfer DNA
Abstract:
... Whilst WRKY transcription factors are known to be involved in diverse plant responses to biotic stresses, their involvement in abiotic stress tolerance is poorly understood. OsFRDL4, encoding a citrate transporter, has been reported to be regulated by ALUMINUM (Al) RESISTANCE TRANSCRIPTION FACTOR 1 (ART1) in rice, but whether it is also regulated by other transcription factors is unknown. We defin ...
DOI:
10.1111/nph.15143

66. Two citrate transporters coordinately regulate citrate secretion from rice bean root tip under aluminum stress

Author:
Mei Ya Liu; He Qiang Lou; Wei Wei Chen; Miguel A. Piñeros; Jia Meng Xu; Wei Fan; Leon V. Kochian; Shao Jian Zheng; Jian Li Yang
Source:
Plant, cell and environment 2018 v.41 no.4 pp. 809-822
ISSN:
0140-7791
Subject:
Arabidopsis; Vigna umbellata; Xenopus; aluminum; carbon; citrates; electrophysiology; oocytes; secretion; toxicity; transcription (genetics); transcription factors; transporters
Abstract:
... Aluminum (Al)‐induced organic acid secretion from the root apex is an important Al resistance mechanism. However, it remains unclear how plants fine‐tune root organic acid secretion which can contribute significantly to the loss of fixed carbon from the plant. Here, we demonstrate that Al‐induced citrate secretion from the rice bean root apex is biphasic, consisting of an early phase with low secr ...
DOI:
10.1111/pce.13150

67. The accumulation and fractionation of Rare Earth Elements in hydroponically grown Phytolacca americana L.

Author:
Ming Yuan; Mei-Na Guo; Wen-Shen Liu; Chang Liu; Antony van der Ent; Jean Louis Morel; Hermine Huot; Wan-Ying Zhao; Xian-Ge Wei; Rong-Liang Qiu; Ye-Tao Tang
Source:
Plant and soil 2017 v.421 no.1-2 pp. 67-82
ISSN:
0032-079X
Subject:
Phytolacca americana; aluminum; biomass production; calcium; citrates; fractionation; hydroponics; ion channels; rare earth elements; soil pollution
Abstract:
... BACKGROUND AND AIMS: The widespread use of Rare Earth Elements (REEs) has resulted in localized soil pollution. Phytolacca americana L. has potential for REE phyto-extraction, but the related mechanism is not clear. METHODS: In this study, the uptake and fractionation of REEs, and the influence of REEs on biomass production was investigated in hydroponically grown plants. Furthermore, the effects ...
DOI:
10.1007/s11104-017-3426-3

68. An aluminum-resistance mechanism in Eucalyptus camaldulensis: complexation between aluminum and oenothein B in presence of organic acids in vitro

Author:
Ko Tahara; Syuntaro Hiradate; Koh Hashida; Kenji Shinohara
Source:
Journal of forest research 2017 v.22 no.4 pp. 261-264
ISSN:
1610-7403
Subject:
Eucalyptus camaldulensis; aluminum; citrates; forests; ligands; magnetism; molecular weight; oxalates; research; symplast; trees
Abstract:
... A hydrolyzable tannin, oenothein B, has recently been identified as a novel type of Al-binding and detoxifying ligand in a highly aluminum (Al)-resistant tree, Eucalyptus camaldulensis. Oenothein B is mainly localized in the root symplast, where the known ligands, citrate and oxalate, are also present. In this study, to investigate whether oenothein B can form complexes with Al in the presence of ...
DOI:
10.1080/13416979.2017.1326656

69. Alleles of organic acid transporter genes are highly correlated with wheat resistance to acidic soil in field conditions

Author:
Jorge G. Aguilera; João A. D. Minozzo; Diliane Barichello; Claúdia M. Fogaça; José Pereira da Silva Jr.; Luciano Consoli; Jorge F. Pereira
Source:
Theoretical and applied genetics 2016 v.129 no.7 pp. 1317-1331
ISSN:
0040-5752
Subject:
acid soils; alleles; aluminum; citrates; cultivars; field experimentation; haplotypes; hydroponics; malates; resistance mechanisms; root growth; toxicity; transporters; wheat
Abstract:
... KEY MESSAGE : TaALMT1 and TaMATE1B promoter alleles are highly correlated with wheat growth in acidic soil with a high concentration of toxic aluminium. The aluminium (Al³⁺) resistance of 338 wheat genotypes with different geographic origins was correlated with morphological traits and TaALMT1 and TaMATE1B alleles. Both of these genes encode malate and citrate transporters associated with Al³⁺ res ...
DOI:
10.1007/s00122-016-2705-3

70. Differential Physiological Responses of Portuguese Bread Wheat (Triticum aestivum L.) Genotypes under Aluminium Stress

Author:
Ana Luísa Garcia-Oliveira; Paula Martins-Lopes; Roser Tolrà; Charlotte Poschenrieder; Henrique Guedes-Pinto; César Benito
Source:
Diversity 2016 v.8 no.4 pp. -
ISSN:
1424-2818
Subject:
Triticum aestivum; acid soils; aluminum; citrates; genotype; lipid peroxidation; nutrients; physiological response; phytotoxicity; plasma membrane; regrowth; root growth; root hairs; root tips; wheat
Abstract:
... The major limitation of cereal production in acidic soils is aluminium (Al) phytotoxicity which inhibits root growth. Recent evidence indicates that different genotypes within the same species have evolved different mechanisms to cope with this stress. With these facts in mind, root responses of two highly Al tolerant Portuguese bread wheat genotypes—Barbela 7/72/92 and Viloso mole—were investigat ...
DOI:
10.3390/d8040026

71. Early detection of the effects of compaction in forested soils: evidence from selective extraction techniques

Author:
Muhammad Farrakh Nawaz; Guilhem Bourrié; Fabienne Trolard; Jacques Ranger; Sadaf Gul; Nabeel Khan Niazi
Source:
Journal of soils and sediments 2016 v.16 no.9 pp. 2223-2233
ISSN:
1439-0108
Subject:
manganese; mechanization; iron oxides; soil compaction; forest soils; forests; iron; air; crystallization; soil density; citrates; anaerobic conditions; bicarbonates; Luvisols; soil sampling; hydraulic conductivity; X-ray diffraction; silicon; compacted soils; magnesium; physicochemical properties; aluminum; soil profiles; permeability
Abstract:
... PURPOSE: Soil compaction resulting from mechanisation of forest operations reduces air permeability and hydraulic conductivity of soil and can result in the development of hydromorphic and/or anoxic conditions. These hydromorphic conditions can affect physico-chemical properties of the soils. However, early detection of these effects on mineralogical portion of soils is methodologically difficult. ...
DOI:
10.1007/s11368-016-1434-1

72. Effect of experimental variables onto Co2+ and Sr2+ sorption behavior in red mud-water suspensions

Author:
Aleksandra S. Milenković; Ivana D. Smičiklas; Marija Z. Šljivić-Ivanović; Ljiljana S. Živković; Nikola S. Vukelić
Source:
Journal of environmental science and health 2016 v.51 no.8 pp. 679-690
ISSN:
1532-4117
Subject:
EDTA (chelating agent); aluminum; aluminum oxide; calcium; cations; chemical bonding; citrates; cobalt; desorption; electrostatic interactions; ion exchange; isoelectric point; ligands; minerals; pH; radioactive waste; sodium; strontium; waste treatment
Abstract:
... The prospects of rinsed red mud (alumina production residue) utilization for liquid radioactive waste treatment have been investigated, with Co ²⁺ and Sr ²⁺ as model cations of radioactive elements. To evaluate the sorption effectiveness and corresponding binding mechanisms, the process was analyzed in batch conditions, by varying experimental conditions (pH, Co ²⁺ and Sr ²⁺ concentrations in sing ...
DOI:
10.1080/10934529.2016.1159884

73. Effects of organic acids on uptake of nutritional elements and Al forms in Brassica napus L. under Al stress as analyzed by 27Al-NMR

Author:
Gendi Xu; Yuhuan Wu; Dai Liu; Yueping Wang; Yi Zhang; Peng Liu
Source:
Revista brasileira de botânica 2016 v.39 no.1 pp. 1-8
ISSN:
0100-8404
Subject:
Brassica napus; absorption; aluminum; calcium; citrates; genotype; hydroponics; iron; magnesium; malates; nutrient content; potassium; roots; toxicity
Abstract:
... Hydroponic experiments were performed to investigate the effects of exogenous organic acids on Al accumulation and Al forms in two rape genotypes, Heza No. 7 (Al-tolerant) and Zhongnongyou No. 6 (Al-sensitive) under Al stress. Results showed there exhibited diverse effects on different varieties of rape. Citrate can significantly improve the absorption of Al in Heza No. 7. Al content in Al + citra ...
DOI:
10.1007/s40415-015-0198-y

74. Functional characterization of plasma membrane-localized organic acid transporter (CsALMT1) involved in aluminum tolerance in Camelina sativa L.

Author:
Won Park; Hyun-Sung Kim; Tae-Wan Park; Yong-Hwa Lee; Sung-Ju Ahn
Source:
Plant biotechnology reports 2017 v.11 no.3 pp. 181-192
ISSN:
1863-5466
Subject:
Camelina sativa; acid soils; aluminum; anions; citrates; crop production; gene overexpression; genes; green fluorescent protein; malates; nutrient uptake; plasma membrane; protoplasts; root growth; roots; secretion; shoots; staining; toxicity; transgenic plants
Abstract:
... Aluminum (Al) toxicity is a major limiting factor that inhibits root elongation and decreases crop production in acidic soils. The symptoms of inhibited root growth include a reduced uptake of nutrients because the roots become stubby and brittle. The release of organic anions from roots can protect a plant from Al toxicity. The mechanism relies on the efflux of organic anions, such as malate or c ...
DOI:
10.1007/s11816-017-0441-z

75. Geochemical and microbial controls of the effect of citrate on phosphorus availability in a ferralsol

Author:
Manitranirina Henintsoa; Thierry Becquer; Lilia Rabeharisoa; Frederic Gerard
Source:
Geoderma 2017 v.291 pp. 33-39
ISSN:
0016-7061
Subject:
Ferralsols; aluminum; ambient temperature; anions; citrates; geochemistry; glucose; iron; microbial growth; minerals; phosphates; phosphorus; roots; silicon; tropical soils
Abstract:
... The secretion of organic anions, particularly citrate, by plant roots may be an effective process to mobilize phosphate (PO4) from solid constituents. However, microbial growth and corresponding phosphorus (P) immobilization can act adversely. This experimental study was aimed at studying the relative influence of geochemistry and microbiology on the influence of citrate on P availability in a tro ...
DOI:
10.1016/j.geoderma.2016.12.020

76. Overexpression of a peroxidase gene (AtPrx64) of Arabidopsis thaliana in tobacco improves plant’s tolerance to aluminum stress

Author:
Yuanshuang Wu; Zhili Yang; Jingyi How; Huini Xu; Limei Chen; Kunzhi Li
Source:
Plant molecular biology 2017 v.95 no.1-2 pp. 157-168
ISSN:
0167-4412
Subject:
Arabidopsis thaliana; H-transporting ATP synthase; aluminum; cell walls; citrates; exudation; gene expression regulation; gene overexpression; genes; lignin; malondialdehyde; peroxidase; phosphorylation; plasma membrane; protective effect; proteins; root growth; root tips; tobacco; transgenic plants
Abstract:
... KEY MESSAGE: AtPrx64 is one of the peroxidases gene up-regulated in Al stress and has some functions in the formation of plant second cell wall. Its overexpression may improve plant tolerance to Al by some ways. Studies on its function under Al stress may help us to understand the mechanism of plant tolerance to Al stress. In Arabidopsis thaliana, the expressions of some genes (AtPrxs) encoding cl ...
DOI:
10.1007/s11103-017-0644-2

77. Physiological and molecular analysis on root growth associated with the tolerance to aluminum and drought individual and combined in Tibetan wild and cultivated barley

Author:
Imrul Mosaddek Ahmed; Umme Aktari Nadira; Fangbin Cao; Xiaoyan He; Guoping Zhang; Feibo Wu
Source:
Planta 2016 v.243 no.4 pp. 973-985
ISSN:
0032-0935
Subject:
9-cis-epoxycarotenoid dioxygenase; Hordeum vulgare; abscisic acid; acclimation; aluminum; barley; biosynthesis; callose; citrates; crop production; cultivars; dehydrins; drought; drought tolerance; ethylene; exudation; gene expression; genes; genotype; hydrogen peroxide; malates; pH; polyethylene glycol; root growth; root hairs; root tips; secretion; sucrose synthase; toxic substances; toxicity; water stress; zeatin
Abstract:
... MAIN CONCLUSION : The drought-stimulated gene expression of NCED, SUS, and KS - DHN and ABA signal cross-talk with other phytohormones maintains barley root growth under drought stress at pH 4.0 plus polyethylene glycol plus aluminum. Aluminum (Al) toxicity and drought are two major factors that limit barley production. In this work, the individual and combined effects of Al/acid and polyethylene ...
DOI:
10.1007/s00425-015-2442-x

78. Progress in mass spectrometry for the analysis of set-off phenomena in plastic food packaging materials

Author:
Margarita Aznar; Pilar Alfaro; Cristina Nerín; Emrys Jones; Eleanor Riches
Source:
Journal of chromatography 2016 v.1453 pp. 124-133
ISSN:
0021-9673
Subject:
aluminum; citrates; desorption; dyes; ethanol; food packaging; mass spectrometry; oxidation; packaging materials; phosphine; phthalates; plasticizers; polypropylenes; solvents; surfactants; triethylene glycol; ultra-performance liquid chromatography
Abstract:
... In most cases, food packaging materials contain inks whose components can migrate to food by diffusion through the material as well as by set-off phenomena. In this work, different mass spectrometry approaches had been used in order to identify and confirm the presence of ink components in ethanol (95%) and Tenax® as food simulants. Three different sets of materials, manufactured with different pr ...
DOI:
10.1016/j.chroma.2016.05.032

79. Rapid activation of catalase followed by citrate efflux effectively improves aluminum tolerance in the roots of chick pea (Cicer arietinum)

Author:
Manorma Sharma; Vinay Sharma; Bhumi Nath Tripathi
Source:
Protoplasma 2016 v.253 no.3 pp. 709-718
ISSN:
0033-183X
Subject:
Cicer arietinum; aluminum; ascorbate peroxidase; catalase; chickpeas; citrates; genotype; hydrogen peroxide; lipid peroxidation; root growth; roots; superoxide dismutase
Abstract:
... The present study demonstrates the comparative response of two contrasting genotypes (aluminum (Al) tolerant and Al sensitive) of chick pea (Cicer arietinum) against Al stress. The Al-tolerant genotype (RSG 974) showed lesser inhibition of root growth as well as lower oxidative damages, measured in terms of the accumulation of H₂O₂ and lipid peroxidation compared to the Al-sensitive genotype (RSG ...
DOI:
10.1007/s00709-015-0913-3

80. Silicon increases phosphorus (P) uptake by wheat under low P acid soil conditions

Author:
Ljiljana Kostic; Nina Nikolic; Dragana Bosnic; Jelena Samardzic; Miroslav Nikolic
Source:
Plant and soil 2017 v.419 no.1-2 pp. 447-455
ISSN:
0032-079X
Subject:
Triticum aestivum; acid soils; aluminum; citrates; exudation; fertilizer application; genes; liming; malates; nutrient uptake; phosphorus; phosphorus fertilizers; plant growth; rhizosphere; roots; silicon; soil pH; soil quality; transporters; wheat
Abstract:
... BACKGROUND AND AIMS: Although silicon (Si) is known to improve plant growth under low phosphorus (P) conditions, the in planta mechanisms responsible for this effect are still unknown. Here, we investigated the role of Si on P uptake along with the expression of Pi transporters in wheat (Triticum aestivum L.) grown in low P acid soil in comparison with P fertilization and liming. METHODS: A combin ...
DOI:
10.1007/s11104-017-3364-0

81. A computational study on interaction of aluminum with d-glucose 6-phosphate for various stoichiometries

Author:
Elena Formoso; Xabier Lopez
Source:
RSC advances 2017 v.7 no.10 pp. 6064-6079
ISSN:
2046-2069
Subject:
aluminum; binding capacity; citrates; data collection; density functional theory; glucose; glucose 6-phosphate; ligands; metabolism; metabolites; models; moieties; phosphates; solvents; toxicity
Abstract:
... The interaction of aluminum with glucose 6-phosphate (Al-G6P) is thought to disrupt key processes of the glucide metabolism in cells. In this article, a Density Functional Theory study on the interaction of aluminum with d-glucose 6-phoshate is presented, combined with polarizable continuum models to account for bulk solvent effects. 143 aluminum–G6P complexes with different binding modes and vari ...
DOI:
10.1039/c6ra27037a

82. The interaction of salicylic acid and Ca2+ alleviates aluminum toxicity in soybean (Glycine max L.)

Author:
Tu Lan; Jiangfeng You; Lingnan Kong; Miao Yu; Minghui Liu; Zhenming Yang
Source:
Plant physiology and biochemistry 2016 v.98 pp. 146-154
ISSN:
0981-9428
Subject:
Glycine max; acid soils; aluminum; antagonists; ascorbate peroxidase; biosynthesis; calcium; calcium channels; calcium chloride; chelating agents; citrates; crop yield; enzyme activity; ethylene glycol tetraacetic acid; gene expression regulation; genes; peroxidase; root growth; roots; salicylic acid; secretion; signal transduction; soybeans; stress response; superoxide dismutase; toxicity
Abstract:
... Both calcium ion (Ca2+) and salicylic acid (SA) influence various stress responses in plants. In acidic soils, aluminum (Al) toxicity adversely affects crop yield. In this study, we determined the influences of Ca2+ and SA on root elongation, Al accumulation, and citrate secretion in soybean plant. We also investigated the activity of antioxidative enzymes in Al-exposed soybean roots. Root elongat ...
DOI:
10.1016/j.plaphy.2015.11.019

83. Aluminum interaction with 2,3-diphosphoglyceric acid. A computational study

Author:
Noelia Luque; Jon I. Mujika; Elena Formoso; Xabier Lopez
Source:
RSC advances 2015 v.5 no.78 pp. 63874-63881
ISSN:
2046-2069
Subject:
aluminum; aluminum compounds; chemical interactions; citrates; ligands; pH; protonation; stoichiometry; sugar acids
Abstract:
... The interaction of aluminum with 2,3-diphosphoglyceric acid (2,3-DPG) is thought to be one of the strongest interactions of aluminium with a biophosphate molecule. In this article, the affinity energies for a family of Al–(2,3-DPG) complexes are calculated at the DFT level of theory. The study includes a total of 26 structures that vary from 1 : 1 complexes, to 1 : 2 stoichiometry and ternary comp ...
DOI:
10.1039/c5ra06796k

84. Characterization of an inducible C2H2‐type zinc finger transcription factor VuSTOP1 in rice bean (Vigna umbellata) reveals differential regulation between low pH and aluminum tolerance mechanisms

Author:
Wei Fan; He Qiang Lou; Yu Long Gong; Mei Ya Liu; Meng Jie Cao; Yu Liu; Jian Li Yang; Shao Jian Zheng
Source:
new phytologist 2015 v.208 no.2 pp. 456-468
ISSN:
0028-646X
Subject:
Vigna umbellata; aluminum; assays; citrates; gene expression; genes; pH; protons; toxicity; transcription (genetics); transcription factors; transcriptional activation; yeasts; zinc finger motif
Abstract:
... The rice bean (Vigna umbellata) root apex specifically secretes citrate through expression activation of Vigna umbellata Multidrug and Toxic Compound Extrusion 1 (VuMATE1) under aluminum (Al³⁺) stress. However, the underlying mechanisms regulating VuMATE1 expression remain unknown. We isolated and characterized a gene encoding Sensitive to Proton Rhizotoxicity1 (STOP1)‐like protein, VuSTOP1, from ...
DOI:
10.1111/nph.13456

85. Differences in Aluminium Accumulation and Resistance between Genotypes of the Genus Fagopyrum

Author:
Benjamin Klug; Thomas W. Kirchner; Walter J. Horst
Source:
Agronomy 2015 v.5 no.3 pp. 418-434
ISSN:
2073-4395
Subject:
Fagopyrum esculentum; aluminum; apoplast; buckwheat; citrates; exudation; genotype; iron; leaves; nutrient solutions; oxalates; resistance mechanisms; root growth; sap; toxicity; xylem
Abstract:
... Aluminium (Al) toxicity is a major factor reducing crop productivity worldwide. There is a broad variation in intra- and inter-specific Al resistance. Whereas the Al resistance mechanisms have generally been well explored in Al-excluding plant species, Al resistance through Al accumulation and Al tolerance is not yet well understood. Therefore, a set of 94 genotypes from three Fagopyrum species wi ...
DOI:
10.3390/agronomy5030418

86. Evolution of carbon impurities in solution-grown and sputtered Al:ZnO thin films exposed to UV light and damp heat degradation

Author:
Peter Fuchs; Jérôme Steinhauser; Enrico Avancini; Yaroslav E. Romanyuk; Ayodhya N. Tiwari
Source:
RSC advances 2016 v.6 no.59 pp. 53768-53776
ISSN:
2046-2069
Subject:
aluminum; carbon; citrates; electrical conductivity; heat; oxygen; ultraviolet radiation; zinc carbonate; zinc oxide
Abstract:
... The electrical properties of polycrystalline ZnO thin films with grain boundary limited charge transport depend significantly on the degree of chemisorbed adsorbate (CₓOyHz) coverage at grain boundaries and on the surface. Here we report the evolution of carbon adsorbates in chemical bath deposited (CBD) aluminum doped ZnO (AZO) thin films during post-deposition UV light exposure and degradation i ...
DOI:
10.1039/c6ra06861h

87. Interactions of nano-oxides with low-molecular-weight organic acids in a contaminated soil

Author:
Martina Vítková; Michael Komárek; Václav Tejnecký; Hana Šillerová
Source:
Journal of hazardous materials 2015 v.293 pp. 7-14
ISSN:
0304-3894
Subject:
adsorbents; aluminum; arsenic; citrates; iron; leaching; manganese; manganese oxides; neutralization; pH; phytoremediation; polluted soils; rhizosphere; root exudates
Abstract:
... Various low-molecular-weight organic acids (LMWOAs) play an important role in the mobilisation of contaminants and their subsequent uptake by plants. Nano-maghemite (NM) and an amorphous Mn oxide (AMO) were investigated for their stabilisation potential under simulated rhizosphere conditions in terms of their use during chemical stabilisation and aided phytostabilisation of metal(loid)s in contami ...
DOI:
10.1016/j.jhazmat.2015.03.033

88. Living organisms influence on environmental conditions: pH modulation by amphibian embryos versus aluminum toxicity

Author:
Jorge Herkovits; Luis Alberto Castañaga; José Luis D’Eramo; Victoria Platonova Jourani
Source:
Chemosphere 2015 v.139 pp. 210-215
ISSN:
0045-6535
Subject:
aluminum; ammonia; amphibians; biomarkers; citrates; developmental stages; environmental factors; exposure duration; natural selection; nitrogen; pH; toxicity
Abstract:
... The LC10, 50 and 90/24h of aluminum for Rhinella arenarum embryos at complete operculum stage were 0.55, 0.75 and 1mgAl3+/L respectively. Those values did not change significantly by expanding the exposure period till 168h. The aluminum toxicity was evaluated in different pH conditions by means of a citrate buffer resulting for instance, 1mgAl3+/L at pH 4, 4.1, 5 and 6 in 100%, 70%, 35% and 0% of ...
DOI:
10.1016/j.chemosphere.2015.05.025

89. Optimization and validation of ELISA immunoassay for the evaluation of in-vitro relative potency of a four-component human papillomavirus vaccine products

Author:
Moushira M. Mostafa; Medhat A. Al-Ghobashy; Faten A. Fathalla; Maissa Y. Salem
Source:
Biologicals 2016 v.44 no.6 pp. 596-599
ISSN:
1045-1056
Subject:
Papillomaviridae; adjuvants; aluminum; ambient temperature; citrates; desorption; enzyme-linked immunosorbent assay; guidelines; humans; quality control; vaccines; viruses
Abstract:
... A sandwich-type ELISA was optimized and validated to determine the in-vitro relative potency of the four-component prophylactic Human papillomavirus (HPV) vaccine. The vaccine contains the non-infectious virus like particles (VLP) corresponding to HPV Types 6, 11, 16 and 18. A modification of the desorption step required to release the VLPs from the aluminum adjuvant was carried out. Samples were ...
DOI:
10.1016/j.biologicals.2016.07.003

90. Organic acid anions: An effective defensive weapon for plants against aluminum toxicity and phosphorus deficiency in acidic soils

Author:
Zhi Chang Chen; Hong Liao
Source:
Journal of genetics and genomics 2016 v.43 no.11 pp. 631-638
ISSN:
1673-8527
Subject:
acid soils; aluminum; anions; citrates; crops; exudation; genetic improvement; genetic traits; genetically modified plants; malates; marker-assisted selection; metabolism; oxalates; phosphates; phosphorus; plant growth substances; rhizosphere; roots; toxicity; vacuoles
Abstract:
... Aluminum (Al) toxicity and phosphorous (P) deficiency are two major limiting factors for plant growth on acidic soils. Thus, the physiological mechanisms for Al tolerance and P acquisition have been intensively studied. A commonly observed trait is that plants have developed the ability to utilize organic acid anions (OAs; mainly malate, citrate and oxalate) to combat Al toxicity and P deficiency. ...
DOI:
10.1016/j.jgg.2016.11.003

91. Overexpression of Yeast Arabinono-1,4-Lactone Oxidase Gene (ALO) Increases Tolerance to Oxidative Stress and Al Toxicity in Transgenic Tobacco Plants

Author:
Zhen Chen; Chao Qin; Ling Lin; Xueyi Zeng; Yaqing Zhao; Sijian He; Shaoyun Lu; Zhenfei Guo
Source:
Plant molecular biology reporter 2015 v.33 no.4 pp. 806-818
ISSN:
0735-9640
Subject:
root tips; genes; plant response; oxidative stress; glutathione; malondialdehyde; hydrogen peroxide; leaves; citrates; gene overexpression; yeasts; toxicity; tobacco; stress tolerance; ascorbic acid; oxalates; transgenic plants; exudation; photosystem II; aluminum
Abstract:
... L-Ascorbic acid (AsA) is the most abundant antioxidant and a major redox buffer that regulates plant responses to environmental stresses. AsA is also a precursor of oxalate in plants, while oxalate is associated with aluminum (Al) tolerance in some plant species. To enhance AsA in plants and increase tolerance against oxidative stress and Al toxicity, the yeast D-arabinono-1,4-lactone oxidase (ALO ...
DOI:
10.1007/s11105-014-0794-1

92. Phosphorylation and Interaction with the 14-3-3 Protein of the Plasma Membrane H⁺-ATPase are Involved in the Regulation of Magnesium-Mediated Increases in Aluminum-Induced Citrate Exudation in Broad Bean (Vicia faba. L)

Author:
Qi Chen; Qi Kan; Ping Wang; Wenqian Yu; Yuzhen Yu; Yan Zhao; Yongxiong Yu; Kunzhi Li; Limei Chen
Source:
Plant & cell physiology 2015 v.56 no.6 pp. 1144-1153
ISSN:
0032-0781
Subject:
H-transporting ATP synthase; Northern blotting; Vicia faba; Western blotting; aluminum; citrates; extrusion; exudation; faba beans; genes; magnesium; messenger RNA; phosphorylation; plasma membrane; precipitin tests; reverse transcriptase polymerase chain reaction; roots; toxic substances; toxicity; transcription (genetics); translation (genetics)
Abstract:
... Several studies have shown that external application of micromolar magnesium (Mg) can increase the resistance of legumes to aluminum (Al) stress by enhancing Al-induced citrate exudation. However, the exact mechanism underlying this regulation remains unknown. In this study, the physiological and molecular mechanisms by which Mg enhances Al-induced citrate exudation to alleviate Al toxicity were i ...
DOI:
10.1093/pcp/pcv038

93. Possible involvement of heterotrimeric G-protein signaling in Al-induced secretion of organic acid anions in Arabidopsis and rye

Author:
Yao Yang Li; Xin Lian Tang; Lei Geng Yang; Yong Xiong Yu; Xiao Feng Li
Source:
Plant and soil 2015 v.388 no.1-2 pp. 55-63
ISSN:
0032-079X
Subject:
Arabidopsis thaliana; G-proteins; agonists; aluminum; anions; antagonists; cholera toxin; citrates; gene expression; genes; guanosinetriphosphatase; immunoblotting; malates; mutants; pertussis toxin; plasma membrane; reverse transcriptase polymerase chain reaction; roots; rye; secretion; seedlings; soil
Abstract:
... BACKGROUND AND AIMS: Secretion of organic acid anions (OAs) from the roots in response to aluminum (Al) is a common mechanism for Al resistance in plants. Transporter genes involved in the Al-induced secretion of malate and citrate have been identified, but the signal cascades mediating the regulation of the secretion of OAs has not been understood. Here, we investigated the possible role of heter ...
DOI:
10.1007/s11104-014-2325-0

94. Pyridoxal derivative functionalized gold nanoparticles for colorimetric determination of zinc(ii) and aluminium(iii)

Author:
Shilpa Bothra; Rajender Kumar; Suban K. Sahoo
Source:
RSC advances 2015 v.5 no.118 pp. 97690-97695
ISSN:
2046-2069
Subject:
aluminum; citrates; color; colorimetry; detection limit; fluorides; metal ions; nanogold; nanoparticles; pyridoxal; thiols; zinc
Abstract:
... This investigation presents the synthesis of a thiol derivative L by one step condensation of pyridoxal with 4-aminothiophenol, and its functionalization on citrate capped AuNPs. The nano-assembly L-AuNPs was applied for the colorimetric detection of metal ions in aqueous medium. The red color of the L-AuNPs solution turns to blue upon addition of Al³⁺ and Zn²⁺ due to the aggregation of nanopartic ...
DOI:
10.1039/c5ra20274d

95. Reducing conditions, reactive metals, and their interactions can explain spatial patterns of surface soil carbon in a humid tropical forest

Author:
Steven J. Hall; Whendee L. Silver
Source:
Biogeochemistry 2015 v.125 no.2 pp. 149-165
ISSN:
0168-2563
Subject:
aluminum; anaerobiosis; biomass; carbon; carbon sinks; citrates; climate; ecosystems; environmental factors; fine roots; iron; landscapes; minerals; models; organic matter; oxygen; regression analysis; soil; soil respiration; soil sampling; sorption; tropical forests; Puerto Rico
Abstract:
... Humid tropical forests support large stocks of surface soil carbon (C) that exhibit high spatial variability over scales of meters to landscapes (km). Reactive minerals and organo-metal complexes are known to contribute to C accumulation in these ecosystems, although potential interactions with environmental factors such as oxygen (O₂) availability have received much less attention. Reducing condi ...
DOI:
10.1007/s10533-015-0120-5

96. Roles of rootstocks and scions in aluminum-tolerance of Citrus

Author:
Xin-Yan Liao; Lin-Tong Yang; Yi-Bin Lu; Xin Ye; Li-Song Chen
Source:
Acta physiologiae plantarum 2015 v.37 no.1 pp. 1743
ISSN:
0137-5881
Subject:
Citrus maxima; Citrus sinensis; aluminum; anions; chlorophyll; citrates; electron transport chain; fluorescence; genotype; leaves; malates; phosphorus; photosynthesis; pummelos; rootstocks; scions
Abstract:
... Four scion-rootstock combination [i.e., X/X and X/SP, ‘Xuegan’ (Citrus sinensis) grafted on ‘Xugan’ and ‘Sour pummelo’ (Citrus grandis), respectively, and SP/X and SP/SP, ‘Sour pummelo’ grafted on ‘Xuegan’ and ‘Sour pummelo’, respectively] plants were treated for 18 weeks with 0 (−Al) or 1.2 mM AlCl₃·6H₂O (+Al). Thereafter, leaf, stem and root concentrations of phosphorus and aluminum (Al), leaf a ...
DOI:
10.1007/s11738-014-1743-1

97. Synthesis of Cu–Zn–Zr–Al–O catalysts via a citrate complex route modified by different solvents and their dehydrogenation/hydrogenation performance

Author:
Jian Ding; Jiangang Chen
Source:
RSC advances 2015 v.5 no.101 pp. 82822-82833
ISSN:
2046-2069
Subject:
aluminum; catalysts; catalytic activity; citrates; cupric oxide; dehydrogenation; desorption; dimerization; ethanol; ethyl acetate; hydrogen; hydrogenation; oxalates; solubility; solvents; zinc; zirconium
Abstract:
... The quaternary Cu–Zn–Zr–Al–O catalysts have been prepared by a citrate-complex method using deionized water, ethanol, and ethyl acetate as solvents. The solvents with different polarity and solubility have a prominent influence on the reaction pathway(s) of the synthesis. When using ethanol as solvent to prepare the catalysts, the selectivity and yield to ethyl acetate of 89.5 wt% and 70.6 wt%, re ...
DOI:
10.1039/c5ra13778k

98. UV-protection of wood surfaces by controlled morphology fine-tuning of ZnO nanostructures

Author:
Huizhang Guo; Peter Fuchs; Etienne Cabane; Benjamin Michen; Harald Hagendorfer; Yaroslav E. Romanyuk; Ingo Burgert
Source:
Holzforschung 2016 v.70 no.8 pp. 699-708
ISSN:
1437-434X
Subject:
Picea; aesthetics; aluminum; ammonium; citrates; coatings; color; durability; nanorods; nitrates; photostability; weathering; wood; zinc oxide
Abstract:
... One of the most significant limitations for a wider utilisation of the renewable and CO₂-storing resource wood is its low ultraviolet (UV) light stability. The protection of the wood surface without altering its aesthetic appeal requires an optically transparent but UV protective coating which should be strongly attached to the rough and inhomogeneous substrate. For this purpose, ZnO nanostructure ...
DOI:
10.1515/hf-2015-0185

99. The influence of citrate on surface dissolution and alteration of the micro- and nano-structure of biotite

Author:
Jifu Li; Wenjun Zhang; Jianqiang Zhu; Jianwei Lu
Source:
RSC advances 2016 v.6 no.113 pp. 112544-112551
ISSN:
2046-2069
Subject:
aluminum; ambient temperature; atomic force microscopy; biotite; citrates; citric acid; coatings; image analysis; ion exchange; mica; nanomaterials; pH; potassium; silicon; sodium chloride; soil
Abstract:
... Unraveling the kinetics and mechanisms of K-bearing mineral dissolution in the presence of organic acids on the nanometer scale is important for understanding the effectiveness of organic acids present in most soil environments. Herein, batch experiments were used coupled with atomic force microscopy (AFM) to image the surface dissolution and alteration of the micro- and nano-structure of biotite ...
DOI:
10.1039/c6ra24068b

100. Clay dispersion in typical soils of north cameroon as a function of ph and electrolyte concentration

Author:
J. P. Nguetnkam; S. Dultz
Source:
Land degradation & development 2014 v.25 no.2 pp. 153-162
ISSN:
1085-3278
Subject:
Oxisols; Ultisols; Vertisols; adsorption; aluminum; calcium; calcium chloride; citrates; clay; correlation; ions; iron; management systems; organic matter; pH; risk; soil colloids; soil erosion; soil management; Cameroon
Abstract:
... Knowledge of clay dispersion behaviour [which is highly influenced by ion concentration in the aqueous phase and by related surface charge (SC) of colloids] is important for rating soil erosion risk (by water). It can also be useful for improving soil management systems. Clay fractions separated from samples of the A‐horizon of a Vertisol, Ultisol and Oxisol were collected, representing typical so ...
DOI:
10.1002/ldr.1155