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1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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

8. 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

9. Aluminum toxicity and tolerance mechanism in cereals and legumes — A review

Author:
Kodithuwakku Kankanange Indika Upali Arunakumara; Buddhi Charana Walpola; Min-Ho Yoon
Source:
Han'guk Ŭngyong Saengmyŏng Hwahakhoe chi = 2013 v.56 no.1 pp. 1-9
ISSN:
1738-2203
Subject:
Glycine max; aluminum; apoplast; cell division; cell walls; citrates; crops; cultivars; exudation; fatty acids; genotype; grains; ligands; malates; meristems; oxalates; oxygen; pH; permeability; peroxidation; phytotoxicity; plasma membrane; reactive oxygen species; rhizosphere; screening; silicon; solubilization; soybeans
Abstract:
... Aluminum (Al), the third most abundant element overall, after silicon and oxygen, is found virtually in all food, air, soil and water. Under acidic conditions, Al is solubilized into [Al(H₂O)₆]³⁺, which is highly toxic to many plant species. Present paper reviewed Al toxicity and tolerance mechanism in agricultural plants with special reference to cereals and legumes. Even at micromolar concentrat ...
DOI:
10.1007/s13765-012-2314-z

10. Molecular characterization of the citrate transporter gene TaMATE1 and expression analysis of upstream genes involved in organic acid transport under Al stress in bread wheat (Triticum aestivum)

Author:
Ana Luísa Garcia‐Oliveira; Paula Martins‐Lopes; Roser Tolrá; Charlotte Poschenrieder; Marta Tarquis; Henrique Guedes‐Pinto; César Benito
Source:
Physiologia plantarum 2014 v.152 no.3 pp. 441-452
ISSN:
0031-9317
Subject:
Triticum aestivum; acid soils; alleles; aluminum; chromosomes; citrates; cultivars; gene expression; genotype; malates; messenger RNA; shoots; transposons; wheat
Abstract:
... In bread wheat, besides malate, the importance of citrate efflux for Al tolerance has also been reported. For better understanding the Al tolerance mechanism in bread wheat, here, we performed both a molecular characterization of the citrate transporter gene TaMATE1 and an investigation on the upstream variations in citrate and malate transporter genes. TaMATE1 belong to multidrug transporter prot ...
DOI:
10.1111/ppl.12179
PubMed:
24588850

11. Molecular mechanisms of Al tolerance in gramineous plants

Author:
Jian Feng Ma; Zhi Chang Chen; Ren Fang Shen
Source:
Plant and soil 2014 v.381 no.1-2 pp. 1-12
ISSN:
0032-079X
Subject:
Poaceae; acid soils; aluminum; anions; citrates; cultivars; extrusion; gene expression; genes; grain crops; malates; rice; roots; secretion; toxicity; transcription factors; transposons
Abstract:
... BACKGROUND: Aluminum (Al) toxicity has limited the productivity and expansion of cereal crops on acid soils; however, a number of plant species or cultivars have developed different strategies for detoxifying aluminum both internally and externally. SCOPE: This review focuses on recent progress on molecular mechanisms of Al tolerance in gramineous plants. CONCLUSIONS: A common mechanism in all gra ...
DOI:
10.1007/s11104-014-2073-1

12. Up-regulation and interaction of the plasma membrane H+-ATPase and the 14-3-3 protein are involved in the regulation of citrate exudation from the broad bean (Vicia faba L.) under Al stress

Author:
Qi Chen; Chuan-Long Guo; Ping Wang; Xuan-Qin Chen; Kong-Huan Wu; Kui-Zhi Li; Yong-Xiong Yu; Li-Mei Chen
Source:
Plant physiology and biochemistry 2013 v.70 pp. 504-511
ISSN:
0981-9428
Subject:
H-transporting ATP synthase; H-transporting ATPase; Vicia faba; adenosine; aluminum; citrates; correlation; cultivars; excretion; exudation; faba beans; fusicoccin; gene expression regulation; genes; phosphorylation; plasma membrane; precipitin tests; protons; reverse transcriptase polymerase chain reaction; roots; secretion
Abstract:
... Our previous study showed that citrate excretion coupled with a concomitant release of protons was involved in aluminum (Al) resistance in the broad bean. Furthermore, genes encoding plasma membrane (PM) H+-ATPase (vha2) and the 14-3-3 protein (vf14-3-3b) were up-regulated by Al in Al-resistant (YD) broad bean roots. In this study, the roles of PM H+-ATPase (E.C. 3.6.3.6) and the 14-3-3 protein in ...
DOI:
10.1016/j.plaphy.2013.06.015

13. Aluminum resistance mechanisms in oat (Avena sativa L.)

Author:
Lorien Radmer; Mesfin Tesfaye; David A. Somers; Stephen J. Temple; Carroll P. Vance; Deborah A. Samac
Source:
Plant and soil 2012 v.351 no.1-2 pp. 121-134
ISSN:
0032-079X
Subject:
Avena sativa; Medicago sativa; alfalfa; aluminum; citrates; crops; cultivars; genes; malate dehydrogenase; malates; oats; proteins; resistance mechanisms; root growth; roots; secretion; seedlings
Abstract:
... BACKGROUND AND AIMS: Enhanced aluminum (Al) resistance has been observed in dicots over-expressing enzymes involved in organic acid synthesis; however, this approach for improving Al resistance has not been investigated in monocots. Among the cereals, oat (Avena sativa L.) is considered to be Al resistant, but the basis of resistance is not known. METHODS: A hydroponic assay and hematoxylin staini ...
Handle:
10113/54030
DOI:
10.1007/s11104-011-0937-1

14. Cellular responses of two Latin-American cultivars of Lotus corniculatus to low pH and Al stress

Author:
Peter Paľove-Balang; Milada Čiamporová; Veronika Zelinová; Ján Pavlovkin; Erika Gurinová; Igor Mistrík
Source:
Open life sciences 2012 v.7 no.6 pp. 1046-1054
ISSN:
2391-5412
Subject:
Lotus corniculatus; aluminum; cell walls; citrates; cultivars; cytoplasm; death; exudation; forage; membrane potential; pH; roots; tannins; toxicity
Abstract:
... Toxic effects of acidic root medium and aluminium were evaluated in two forage cultivars of Lotus corniculatus differing in their tolerance to Al stress. The structural response of most of the root cells exposed to low pH without Al3+ differed markedly from that induced by the combined stress. Conspicuous alteration of the nucleus was present only at low pH 4.0 and disintegration of the cytoplasmi ...
DOI:
10.2478/s11535-012-0098-0

15. Development of gene-specific markers for acid soil/aluminium tolerance in barley (Hordeum vulgare L.)

Author:
Miao Bian; Irene Waters; Sue Broughton; Xiao-Qi Zhang; Meixue Zhou; Reg Lance; Dongfa Sun; Chengdao Li
Source:
Molecular breeding 2013 v.32 no.1 pp. 155-164
ISSN:
1380-3743
Subject:
Hordeum vulgare; acid soils; aluminum; barley; breeding; chromosomes; citrates; crop production; cultivars; genes; genetic improvement; genetic markers; haploidy; phenotypic variation; polymerase chain reaction; quantitative trait loci; sequence analysis; toxicity
Abstract:
... Acid soil/aluminium toxicity is one of the major constraints on barley production around the world. Genetic improvement is the best solution and molecular-marker-assisted selection has proved to be an efficient tool for developing barley cultivars with acid soil/aluminium tolerance. In this study, barley variety Svanhals—introduced from CYMMIT (International Maize and Wheat Improvement Center)—was ...
DOI:
10.1007/s11032-013-9859-3

16. The ScAACT1 gene at the Q alt5 locus as a candidate for increased aluminum tolerance in rye (Secale cereale L.)

Author:
J. Silva-Navas; C. Benito; B. Téllez-Robledo; D. Abd El-Moneim; F. J. Gallego
Source:
Molecular breeding 2012 v.30 no.2 pp. 845-856
ISSN:
1380-3743
Subject:
Secale cereale; acid soils; aluminum; arable soils; barley; cations; chelation; citrates; cultivars; genes; loci; malates; membrane proteins; phylogeny; plant growth; quantitative trait loci; rye
Abstract:
... Soluble aluminum (Al3+) is a major constraint to plant growth in highly acidic soils, which comprise up to 50% of the world’s arable land. The primary mechanism of Al resistance described in plants is the chelation of Al3+ cations by release of organic acids into the rhizosphere. Candidate aluminum tolerance genes encoding organic acid transporter of the ALMT (aluminum-activated malate transport ...
DOI:
10.1007/s11032-011-9668-5

17. Proteomic Analysis of Soybean Roots under Aluminum Stress

Author:
Duressa Dechassa; Soliman Khairy; Taylor Robert; Senwo Zachary; National Science Foundation; School of Agricultural and Environmental Sciences, Alabama A&M University
Source:
International journal of plant genomics 2011 v.2011 pp. -
ISSN:
1687-5370
Subject:
acid soils; aluminum; bioinformatics; citrates; crops; cultivars; gene overexpression; genetic engineering; genetically modified organisms; genotype; malate dehydrogenase; malates; mass spectrometry; phosphopyruvate hydratase; protein composition; proteins; proteomics; pyruvate dehydrogenase (lipoamide); root growth; roots; soybeans; stress response; toxicity
Abstract:
... Toxic levels of aluminum (Al) in acid soils inhibit root growth and cause substantial reduction in yields of Al-sensitive crops. Aluminum-tolerant cultivars detoxify Al through multiple mechanisms that are currently not well understood at genetic and molecular levels. To enhance our understanding of the molecular mechanisms involved in soybean Al tolerance and toxicity, we conducted proteomic anal ...
DOI:
10.1155/2011/282531
PubMed:
21577316
PubMed Central:
PMC3092509

18. An Al‐inducible MATE gene is involved in external detoxification of Al in rice

Author:
Kengo Yokosho; Naoki Yamaji; Jian Feng Ma
Source:
plant journal 2011 v.68 no.6 pp. 1061-1069
ISSN:
0960-7412
Subject:
Oryza sativa; Xenopus; aluminum; citrates; cultivars; genes; onions; oocytes; plasma membrane; rice; roots; sap; secretion; transcription factors; xylem; zinc finger motif
Abstract:
... A number of plant species, including rice, secretes citrate from roots in response to Al stress. Here we characterized the functions of a gene, OsFRDL4 (Os01g0919100) that belongs to the multidrug and toxic compound extrusion (MATE) family in rice (Oryza sativa). Heterologous expression in Xenopus oocyte showed that the OsFRDL4 protein was able to transport citrate and was activated by Al. The exp ...
DOI:
10.1111/j.1365-313X.2011.04757.x
PubMed:
21880027

19. The genetic control of tolerance to aluminum toxicity in the ‘Essex' by ‘Forrest' recombinant inbred line population

Author:
Sharma, Aman D.; Sharma, Hemlata; Lightfoot, David A.
Source:
Theoretical and applied genetics 2011 v.122 no.4 pp. 687-694
ISSN:
0040-5752
Subject:
acid soils; alleles; aluminum; analysis of variance; citrates; crops; cultivars; genotype; greenhouses; hydrolysis; hydroponics; inbred lines; loci; metabolism; nitrate fertilizers; quantitative trait loci; rhizosphere; root growth; roots; soil pH; soybeans; toxicity
Abstract:
... Aluminum (Al) toxicity to plant roots is a major problem of acidic soils. The main chemical reaction involved is Al hydrolysis. Application of lime or nitrate fertilizers to raise soil pH reduces Al toxicity but not as economically as a plant genotypes with natural tolerance against this stress. Ammonium fertilization of crops and assimilation of ammonium (even that derived from dinitrogen) are pa ...
DOI:
10.1007/s00122-010-1478-3
PubMed:
21060987

20. Citrate transporters play an important role in regulating aluminum-induced citrate secretion in Glycine max

Author:
You, J. F.; Hou, N. N.; Xu, M. Y.; Zhang, H. M.; Yang, Z. M.
Source:
Biologia plantarum 2010 v.54 no.4 pp. 766-768
ISSN:
0006-3134
Subject:
Glycine max; aluminum; citrates; cultivars; cycloheximide; exudation; mitochondrial membrane; plasma membrane; protein synthesis; protein synthesis inhibitors; pyridoxal; roots; secretion; soybeans; transporters
Abstract:
... To further understand the process of Al-induced citrate secretion from soybean roots, the effect of protein synthesis inhibitor, anion channel blockers, and citrate carrier inhibitors on Al-induced citrate exudation was investigated in Al-resistant soybean cultivar PI 416937. Citrate exudation from roots increased with the increase of Al concentration from 10 to 50 μM and initiated after 4 h of Al ...
DOI:
10.1007/s10535-010-0138-4

21. The significance of organic-anion exudation for the aluminum resistance of primary triticale derived from wheat and rye parents differing in aluminum resistance

Author:
Stass, Angelika; Smit, Inga; Eticha, Dejene; Oettler, Gisela; Johannes Horst, Walter
Source:
Zeitschrift für Pflanzenernährung und Bodenkunde 2008 v.171 no.4 pp. 634-642
ISSN:
1436-8730
Subject:
Secale cereale; Triticosecale; Triticum aestivum; aluminum; citrates; cultivars; exudation; genotype; parents; regression analysis; root growth; root systems; root tips; rye; seedlings; triticale; wheat
Abstract:
... Eight primary octoploid triticale genotypes (xTriticosecale Wittmack) derived from four wheat cultivars (Triticum aestivum L.) and two rye inbred lines (Secale cereale L.) differing in aluminum (Al) resistance were investigated with respect to their response to Al supply. Aluminum-induced inhibition of root elongation (48 h, 25 μM Al supply), callose formation, and the accumulation of Al in root t ...
DOI:
10.1002/jpln.200700331

22. An Aluminum-Activated Citrate Transporter in Barley

Author:
Furukawa, Jun; Yamaji, Naoki; Wang, Hua; Mitani, Namiki; Murata, Yoshiko; Sato, Kazuhiro; Katsuhara, Maki; Takeda, Kazuyoshi; Ma, Jian Feng
Source:
Plant & cell physiology 2007 v.48 no.8 pp. 1081-1091
ISSN:
0032-0781
Subject:
Hordeum vulgare; Xenopus; aluminum; barley; cell physiology; citrates; crop production; cultivars; electric potential difference; extrusion; fluorescence; genes; heterologous gene expression; malates; microarray technology; onions; oocytes; plasma membrane; root growth; secretion; tobacco; toxic substances
Abstract:
... Soluble ionic aluminum (Al) inhibits root growth and reduces crop production on acid soils. Al-resistant cultivars of barley (Hordeum vulgare L.) detoxify Al by secreting citrate from the roots, but the responsible gene has not been identified yet. Here, we identified a gene (HvAACT1) responsible for the Al-activated citrate secretion by fine mapping combined with microarray analysis, using an Al- ...
DOI:
10.1093/pcp/pcm091

23. Effect of aluminum on cell wall, plasma membrane, antioxidants and root elongation in triticale

Author:
Liu, Q.; Yang, J. L.; He, L. S.; Li, Y. Y.; Zheng, S. J.
Source:
Biologia plantarum 2008 v.52 no.1 pp. 87-92
ISSN:
0006-3134
Subject:
aluminum; antioxidants; cell wall components; cell walls; citrates; cultivars; enzyme activity; hemicellulose; lipid peroxidation; malondialdehyde; peroxidase; plasma membrane; root growth; superoxide dismutase; triticale
Abstract:
... Two triticale cultivars ZC 237 (Al-resistant) and ZC 1890 (Al-sensitive) were used to investigate the effects of 30 to 100 μM Al on antioxidative enzyme activity, lipid peroxidation and cell wall composition. In ZC 1890, the root elongation was significantly inhibited after 1-h exposure to 50 μM Al, the changes in hemicellulose fraction were clearly detected after 2-h Al exposure, while the peroxi ...
DOI:
10.1007/s10535-008-0014-7

24. Soybean root growth in relation to ionic composition in magnesium-amended acid subsoils: Implications on root citrate ameliorating aluminum constraints

Author:
HASHIMOTO, Yohey; SMYTH, T. Jot; HESTERBERG, Dean; ISRAEL, Daniel W.
Source:
Soil science and plant nutrition 2007 v.53 no.6 pp. 753-763
ISSN:
0038-0768
Subject:
Glycine max; aluminum; calcium; calcium carbonate; citrates; cultivars; hydroponics; introduced plants; magnesium; magnesium chloride; protons; root growth; roots; secretion; soil pH; soil solution; soybeans; toxicity
Abstract:
... Hydroponic studies with soybean (Glycine max [L.] Merr.) have shown that μmol L⁻¹ additions of Mg²⁺ were as effective in ameliorating Al rhizotoxicity as additions of Ca²⁺in the mmol L⁻¹ concentration range. The objectives of this study were to assess the ameliorative effects of Mg on soybean root growth in acidic subsoils and to relate the soil solution ionic compositions to soybean root growth. ...
DOI:
10.1111/j.1747-0765.2007.00191.x

25. Differential Aluminum Resistance and Organic Acid Anions Secretion in Triticale

Author:
Liu, Q.; He, L.S.; Wang, Z.Y.; Cheng, X.Z.; Zheng, S.J.
Source:
Communications in soil science and plant analysis 2007 v.38 no.15-16 pp. 1991-2004
ISSN:
0010-3624
Subject:
cultivars; citrates; ion channels; correlation; genetic resistance; phytotoxicity; anions; aluminum; root growth; triticale; genetic variation; temperature; metal tolerance; roots
Abstract:
... Triticale (X Triticosecale Wittmack), a hybrid of wheat and rye, shows a high degree of aluminum (Al) tolerance, but variation in Al resistance between cultivars does exist. The mechanisms responsible for differential Al resistance in 10 triticale cultivars were investigated in this study. Triticale roots secreted both malate and citrate in response to Al stress. The amount of organic acid anions ...
DOI:
10.1080/00103620701548589

26. Molecular mapping of a gene responsible for Al-activated secretion of citrate in barley

Author:
Ma, J.F.; Nagao, S.; Sato, K.; Ito, H.; Furukawa, J.; Takeda, K.
Source:
Journal of experimental botany 2004 v.55 no.401 pp. 1335-1341
ISSN:
0022-0957
Subject:
aluminum; barley; Hordeum vulgare; chromosome mapping; citrates; toxicity; metal tolerance; secretion; microsatellite repeats; root growth; growth retardation; quantitative trait loci; cultivars; gene expression; loci; phenotypic variation
Abstract:
... Aluminium (Al) toxicity is an important limitation to barley (Hordeum vulgare L.) on acid soil. Al-resistant cultivars of barley detoxify Al externally by secreting citrate from the roots. To link the genetics and physiology of Al resistance in barley, genes controlling Al resistance and Al-activated secretion of citrate were mapped. An analysis of Al-induced root growth inhibition from 100 F2 see ...
DOI:
10.1093/jxb/erh152
PubMed:
15155781

27. Effect of aluminium supply on aluminium uptake, translocation and blueing of Hydrangea macrophylla (Thunb.) Ser. cultivars in a peatclay substrate

Author:
A. Naumann; W. J. Horst
Source:
Journal of horticultural science & biotechnology 2003 v.78 no.4 pp. 463-469
ISSN:
2380-4084
Subject:
Hydrangea macrophylla; aluminum; anthocyanins; biotechnology; citrates; color; cultivars; horticulture; malates; pH; sap; xylem
Abstract:
... The aluminium (Al) accumulator Hydrangea macrophylla (H. m.) is extremely Al-resistant compared with other plant species. Sufficient transport of Al into the flowers is essential to achieve the desired colour change from original pink to blue by complexation of the anthocyanin delphinidine with Al. To overcome wide-spread difficulties in producing blue H. m., an improved understanding of the relat ...
DOI:
10.1080/14620316.2003.11511651

28. Aluminum activates a citrate-permeable anion channel in the aluminum-sensitive zone of the maize root apex. A comparison between an aluminum-sensitive and an aluminum-resistant cultivar

Author:
Kollmeier, M.; Dietrich, P.; Bauer, C.S.; Horst, W.J.; Hedrich, R.
Source:
Plant physiology 2001 v.126 no.1 pp. 397-410
ISSN:
0032-0889
Subject:
Zea mays; root tips; protoplasts; aluminum; phytotoxicity; chelating agents; citrates; permeability; cultivars; genetic variation; anion exchange; stress response
Abstract:
... In search for the cellular and molecular basis for differences in aluminum (Al) resistance between maize (Zea mays) cultivars we applied the patch-clamp technique to protoplasts isolated from the apical root cortex of two maize cultivars differing in Al resistance. Measurements were performed on protoplasts from two apical root zones: The 1- to 2-mm zone (DTZ), described as most Al-sensitive, and ...
PubMed:
11351102
PubMed Central:
PMC102313

29. Possible involvement of protein phosphorylation in aluminum-responsive malate efflux from wheat root apex

Author:
Osawa, H.; Matsumoto, H.
Source:
Plant physiology 2001 v.126 no.1 pp. 411-420
ISSN:
0032-0889
Subject:
Triticum aestivum; root tips; malic acid; citrates; chlorides; nitrates; succinic acid; aluminum; plant proteins; phosphorylation; enzyme activity; enzyme inhibitors; cultivars; genetic variation; phosphates; anion exchange
Abstract:
... In many plants, efflux of organic anions from roots has been proposed as one of the major Al resistance mechanisms. However it remains unknown how plants regulate efflux of organic anions in response to Al. In this study, the regulatory mechanisms of Al-responsive malate efflux in wheat (Triticum aestivum) were characterized focusing on the role of protein phosphorylation. Al-resistant wheat (cv A ...
PubMed:
11351103
PubMed Central:
PMC102314