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1. Different Height Forms of Spartina alterniflora Might Select Their Own Rhizospheric Bacterial Communities in Southern Coast of China

Author:
Lin, Li’an; Liu, Wenwen; Zhang, Manping; Lin, Xiaolan; Zhang, Yihui; Tian, Yun
Source:
Microbial ecology 2019 v.77 no.1 pp. 124-135
ISSN:
0095-3628
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Spartina alterniflora; bacterial communities; coasts; genes; China;     Show all 7 Subjects
Abstract:
... In the southernmost part of coast of China, two height forms of Spartina alterniflora, tall and short, have invaded Leizhou Peninsula within the last decade. However, the effect of different height forms of Spartina alterniflora on plant–microbe interaction has not been clarified. Here, the community structures of rhizosphere bacteria and the abundance of N- and S-cycling functional genes associat ...
DOI:
10.1007/s00248-018-1208-y

2. Hemoglobin as a probe for estimation of nitric oxide emission from plant tissues

Author:
Singh, Neha; Bhatla, Satish C.
Source:
Plant methods 2019 v.15 no.1 pp. 39
ISSN:
1746-4811
Subject:
rhizosphere,   etc   ; ecosystems; hemoglobin; nitric oxide; plant tissues; roots;     Show all 6 Subjects
Abstract:
... BACKGROUND: Plant roots contribute significant amount of nitric oxide (NO) in the rhizosphere as a component of NO in the ecosystem. Various pharmacological investigations on NO research in plants seek to quench endogenous NO by using externally applied NO quenchers, mainly 2-phenyl-4,4,5,5,-tetramethylimidazoline-1-oxyl 3-oxide (PTIO) and its more soluble form-carboxy-PTIO (cPTIO). Owing to serio ...
DOI:
10.1186/s13007-019-0425-9

3. Fast and efficient symbiotic gene-based duplex PCR approach for the preliminary selection of legume root nodule bacteria

Author:
Silva, Valéria Borges da; Silva, Aleksandro Ferreira da; Silva, Thaise Rosa da; Santos, Jonnathan Whiny Moraes dos; Silva, Jéssica Fernanda da; Souza, Adailson Pereira de; Freitas, Ana Dolores Santiago de; Fernandes-Júnior, Paulo Ivan
Source:
Rhizosphere 2019 v.10 pp. 100144
ISSN:
2452-2198
Subject:
rhizosphere,   etc   ; bacteria; genes; legumes; nodulation; polymerase chain reaction; root nodules;     Show all 7 Subjects
Abstract:
... The isolation of root nodule bacteria (RNB) usually lead to obtainment of several non-rhizobia, mainly those fast-growing bacteria. The plant-authentication experiments to select the nodulating bacteria are time consuming and can be ruined in case of nodulation of negative controls. To speed up this step in rhizobiology research a fast, simple and efficient duplex PCR assay for the amplification o ...
DOI:
10.1016/j.rhisph.2019.100144

4. Small molecule reaction networks that model the ROS dynamics of the rhizosphere

Author:
Taran, Olga; Patel, Vraj; Lynn, David G.
Source:
Chemical communications 2019 v.55 no.25 pp. 3602-3605
ISSN:
1364-548X
Subject:
rhizosphere,   etc   ; antibiotics; biofilm; chemical compounds; chemical reactions; metabolites; microbiome; models;     Show all 8 Subjects
Abstract:
... Spontaneous reactions between plant and bacterial redox active metabolites can result in reaction-diffusion networks that regulate redox gradients and ROS concentrations. Our model system mimics known biological processes observed in plants, including the oxidative burst, travelling waves, and chemical pattern formation. Similar non-enzymatic reactions between natural products may play a role in p ...
DOI:
10.1039/c8cc08940j

5. Determination of water content and characteristic analysis in substrate root zone by electrical impedance spectroscopy

Author:
Wang, Yong-Qian; Zhao, Peng-Fei; Fan, Li-Feng; Zhou, Qiao; Wang, Zi-Yang; Song, Chao; Chai, Zhi-Qiang; Yue, Yang; Huang, Lan; Wang, Zhong-Yi
Source:
Computers and electronics in agriculture 2019 v.156 pp. 243-253
ISSN:
0168-1699
Subject:
rhizosphere,   etc   ; dielectric spectroscopy; nutrients; plant morphology; tomography; water content;     Show all 6 Subjects
Abstract:
... The root zone of a plant is an important system that provides a base for use of nutrients and water and has been the focus of many researchers’ work. This paper examines a new electrical impedance spectroscopy (EIS) measurement approach within the 100 Hz–2 MHz range in the substrate root zone that uses an adjacent stimulation and measurement pattern that overcomes the shortcomings of conventional ...
DOI:
10.1016/j.compag.2018.11.037

6. Facilitation promotes invasions in plant‐associated microbial communities

Author:
Li, Mei; Wei, Zhong; Wang, Jianing; Jousset, Alexandre; Friman, Ville‐Petri; Xu, Yangchun; Shen, Qirong; Pommier, Thomas
Source:
Ecology letters 2019 v.22 no.1 pp. 149-158
ISSN:
1461-023X
Subject:
rhizosphere,   etc   ; Ralstonia solanacearum; antibiosis; bacteria; microbial communities; tomatoes;     Show all 6 Subjects
Abstract:
... While several studies have established a positive correlation between community diversity and invasion resistance, it is less clear how species interactions within resident communities shape this process. Here, we experimentally tested how antagonistic and facilitative pairwise interactions within resident model microbial communities predict invasion by the plant–pathogenic bacterium Ralstonia sol ...
DOI:
10.1111/ele.13177

7. Plant Defense by VOC-Induced Microbial Priming

Author:
Liu, Hongwei; Brettell, Laura E.
Source:
Trends in plant science 2019
ISSN:
1360-1385
Subject:
rhizosphere,   etc   ; beneficial microorganisms; biotic stress; volatile organic compounds;     Show all 4 Subjects
Abstract:
... The plant holobiont extends the plant’s capacity for nutrient acquisition and stress protection. Recent studies show that under biotic stress plants can promote the acquisition of certain beneficial bacteria to their rhizosphere. Active emission of volatile organic compounds (VOCs) is a newly identified mechanism utilized by plants for this process. ...
DOI:
10.1016/j.tplants.2019.01.008

8. The effect of nanoparticles on soil and rhizosphere bacteria and plant growth in lettuce seedlings

Author:
Kibbey, Tohren C.G.; Strevett, Keith A.
Source:
Chemosphere 2019 v.221 pp. 703-707
ISSN:
0045-6535
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; fertilizers; lettuce; nanoparticles; nanospheres; pesticide application; plate count; polystyrenes; seedlings; soil; stem elongation; titanium dioxide;     Show all 13 Subjects
Abstract:
... Nanomaterials are increasingly being considered for use in agricultural applications, where they have been suggested for a range of uses including fertilizer and pesticide applications. Among nanomaterial applications, agricultural use has a particularly high likelihood of introducing significant quantities of nanomaterials to the environment. The focus of this work was on conducting preliminary e ...
DOI:
10.1016/j.chemosphere.2019.01.091

9. The phosphotransferase system gene ptsH plays an important role in MnSOD production, biofilm formation, swarming motility, and root colonization in Bacillus cereus 905

Author:
Gao, Tantan; Ding, Mingzheng; Yang, Ching-Hong; Fan, Haiyan; Chai, Yunrong; Li, Yan
Source:
Research in microbiology 2019 v.170 no.2 pp. 86-96
ISSN:
0923-2508
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Bacillus cereus; arabinose; bacterial motility; biofilm; genes; glucose; oxidative stress; plant growth; roots; superoxide dismutase; transferases; wheat;     Show all 14 Subjects
Abstract:
... The rhizosphere bacterium Bacillus cereus 905 is capable of promoting plant growth through effective colonization on plant roots. The sodA2-encoding manganese-containing superoxide dismutase (MnSOD2) is important for survival of B. cereus 905 in the wheat rhizosphere. However, the genes involved in regulating sodA2 expression and the mechanisms of rhizosphere colonization of B. cereus 905 are not ...
DOI:
10.1016/j.resmic.2018.10.002

10. Diversity of phytobeneficial traits revealed by whole‐genome analysis of worldwide‐isolated phenazine‐producing Pseudomonas spp.

Author:
Biessy, Adrien; Novinscak, Amy; Blom, Jochen; Léger, Geneviève; Thomashow, Linda S.; Cazorla, Francisco M.; Josic, Dragana; Filion, Martin
Source:
Environmental microbiology 2019 v.21 no.1 pp. 437-455
ISSN:
1462-2912
Subject:
rhizosphere; rhizosphere competence,   etc   ; Pseudomonas fluorescens; antibiotics; biological control; biosynthesis; carboxylic acids; genomics; lipopeptides; microorganisms; operon; plant growth; plant pathogens; siderophores;     Show all 14 Subjects
Abstract:
... Plant‐beneficial Pseudomonas spp. competitively colonize the rhizosphere and display plant‐growth promotion and/or disease‐suppression activities. Some strains within the P. fluorescens species complex produce phenazine derivatives, such as phenazine‐1‐carboxylic acid. These antimicrobial compounds are broadly inhibitory to numerous soil‐dwelling plant pathogens and play a role in the ecological c ...
DOI:
10.1111/1462-2920.14476

11. Rhizobacteria from Crocus sativus grown in Kashmir, India

Author:
Ambardar, S.; Vakhlu, J.
Source:
Acta horticulturae 2018 no.1200 pp. 69-78
ISSN:
0567-7572
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Crocus sativus; microscopy; saffron; soil types; India;     Show all 7 Subjects
Abstract:
... Rhizobacteria are root associated bacteria and are since long shown to effect the yield of crop. Despite being world's costliest spice there were no reports available of rhizosphere ecology of saffron. In the present study, the rhizobacteria isolated randomly from rhizosphere of saffron being cultivated in two fields selected on the basis of yield i.e high yielding and low yielding were identified ...
DOI:
10.17660/ActaHortic.2018.1200.11

12. Fractionation and Speciation of Manganese in Rhizosphere Soils of Pseudomonas sp. Rhizobacteria Inoculated Pistachio (Pistacia vera L.) Seedlings Under Salinity Stress

Author:
Atajan, Farhad Azarmi; Mozafari, Vahid; Abbaszadeh-Dahaji, Payman; Hamidpour, Mohsen
Source:
Communications in soil science and plant analysis 2019 v.50 no.7 pp. 894-908
ISSN:
1532-2416
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Pistacia vera; Pseudomonas; chlorophyll; fractionation; manganese; pistachios; plant growth; salinity; salt stress; seedlings; sodium chloride; soil; soil solution;     Show all 15 Subjects
Abstract:
... Enhancement of manganese (Mn) availability in saline and Mn-deficient soils is very important for plant growth. An experiment was carried out to evaluate the effect of Pseudomonas sp. rhizobacteria (P₀ (control), P₁, P₂ and P₃) and Mn (0 and 10 mg Mn kg⁻¹ soil) on the distribution of Mn in the rhizosphere of pistachio seedlings under salinity stress (0, 1000 and 2000 mg NaCl kg⁻¹ soil). The result ...
DOI:
10.1080/00103624.2019.1594876

13. Rhizospheric bacteria with potential to degrade landfill leachate

Author:
Leitner, V.; Malucelli, L. Centa; Pincerati, M. Regina; Maranho, L. Teresinha
Source:
International journal of environmental science and technology 2019 v.16 no.3 pp. 1581-1588
ISSN:
1735-1472
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Alternanthera philoxeroides; DNA; biomass; bioreactors; catalytic activity; environmental law; fermentation; freeze drying; landfill leachates; laws and regulations; macrophytes; pollution control; pollution load; wetlands;     Show all 16 Subjects
Abstract:
... Landfill leachate shows negative impacts to environment. Designed as a conventional treatment it may not, however, be able to reduce pollutant load to acceptable levels according to legislation and environmental laws. Therefore, complementary post-treatment is often necessary for that matter, where they cooperate with conventional one. For the present work, a rhizospheric bacterium was isolated fr ...
DOI:
10.1007/s13762-018-1763-2

14. Apple rootstocks of different nitrogen tolerance affect the rhizosphere bacterial community composition

Author:
Chai, X.; Wang, L.; Yang, Y.; Xie, L.; Zhang, J.; Wu, T.; Zhang, X.; Xu, X.; Wang, Y.; Han, Z.
Source:
Journal of applied microbiology 2019 v.126 no.2 pp. 595-607
ISSN:
1364-5072
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Acinetobacter; Actinobacteria; Bradyrhizobium; Malus; Pseudoxanthomonas; Sphingomonas; apples; bacterial communities; beneficial microorganisms; community structure; greenhouses; horticulture; hybrids; microirrigation; minerals; nitrogen; nitrogen content; photosynthesis; rootstocks;     Show all 21 Subjects
Abstract:
... AIMS: To select apple rootstocks that are tolerant to low nitrogen and reveal the relationship between the rhizosphere bacterial communities and the low nitrogen tolerance of the apple rootstock. METHODS AND RESULTS: In total, 235 lines of hybrids of Malus robusta Rehd. × M.9 with low nitrogen stress were cultivated in pots in a greenhouse equipped with a drip irrigation system, and growth charact ...
DOI:
10.1111/jam.14121

15. A simple method for direct isolation of N-acyl-L-homoserine lactone mediated biofilm-forming rhizobacteria from roots

Author:
Begum, Jamal Farheen; Tamilarasi, Murugesh; Pushpakanth, Periaswamy; Balachandar, Dananjeyan
Source:
Journal of microbiological methods 2019 v.156 pp. 34-39
ISSN:
0167-7012
Subject:
rhizosphere; rhizosphere bacteria,   etc   ; Aeromonas hydrophila; Aeromonas punctata; Chromobacterium violaceum; Pseudomonas; bacterial growth; biofilm; biosensors; culture media; isolation techniques; nucleotide sequences; phylogeny; quorum sensing; ribosomal RNA; rice; roots; violacein;     Show all 18 Subjects
Abstract:
... Plant-associated bacteria produce quorum sensing (QS) signals for community (biofilm) formation and functioning in the rhizosphere. The QS-positive biofilm-forming rhizobacteria that excel benefits to the plants are now gaining increased importance for agricultural use due to their high competitiveness. However, there is no method available to distinguish these bacteria from the roots of a plant t ...
DOI:
10.1016/j.mimet.2018.11.018

16. Copper and zinc in rhizospheric soil of wild plants growing in long-term acid vineyard soils. Insights on availability and metal remediation

Author:
Campillo-Cora, C.; Fernández-Calviño, D.; Pérez-Rodríguez, P.; Fernández-Sanjurjo, M.J.; Núñez-Delgado, A.; Álvarez-Rodríguez, E.; Arias-Estévez, M.; Nóvoa-Muñoz, J.C.
Source:
The Science of the total environment 2019 v.672 pp. 389-399
ISSN:
0048-9697
Subject:
rhizosphere,   etc   ; aboveground biomass; bioaccumulation factor; copper; phytomass; phytoremediation; vineyard soils; wild plants; zinc;     Show all 9 Subjects
Abstract:
... Total and available Cu and Zn levels were assessed in plant biomass, as well as in two rhizosphere fractions (tightly adhering rhizosphere (TAR), and loosely adhering rhizosphere (LAR)), in wild plants species from vineyard soils. Both TAR and LAR fractions were enriched in total Cu and Zn (1.7 and 1.6 times, respectively), and in available Cu and Zn (2.2 and 19.5 times, respectively), with the fo ...
DOI:
10.1016/j.scitotenv.2019.03.301

17. Subsurface irrigation system design for vegetable production using HYDRUS-2D

Author:
Sakaguchi, A.; Yanai, Y.; Sasaki, H.
Source:
Agricultural water management 2019 v.219 pp. 12-18
ISSN:
0378-3774
Subject:
rhizosphere,   etc   ; humans; models; pipes; soil water; spinach; subsurface irrigation; systems engineering; vegetable growing; Japan;     Show all 10 Subjects
Abstract:
... In the subsurface irrigation management of extensively cropped vegetables, uniform crop growth requires the maintenance of uniform soil water suction at the root zone across a field. Moreover, a fixed value of suction that is suitable for crop growth should be maintained. However, accounting for the temporal and spatial changes in the suction is beyond human capability. Using HYDRUS-2D, this study ...
DOI:
10.1016/j.agwat.2019.04.003

18. Small-scale interaction of iron and phosphorus in flooded soils with rice growth

Author:
Wang, Yu; Yuan, Jia-Hui; Chen, Hao; Zhao, Xu; Wang, Dengjun; Wang, Shen-Qiang; Ding, Shi-Ming
Source:
The Science of the total environment 2019 v.669 pp. 911-919
ISSN:
0048-9697
Subject:
rhizosphere,   etc   ; Oryza sativa; dialysis; iron; paddy soils; phosphorus; rice; risk; soil treatment; solubilization;     Show all 10 Subjects
Abstract:
... In the rhizosphere of flooded paddy soils, the solubilization, efflux, and uptake of phosphorus (P) are highly intertwined with iron (Fe) redox cycling. However, the direct observation of Fe-P coupling in the rhizosphere is challenging. This study combined high-resolution dialysis (HR-Peeper) and diffusive gradients in thin films (DGT) techniques to capture the one-dimensional distributions of sol ...
DOI:
10.1016/j.scitotenv.2019.03.054

19. Biogeochemical cycles of key elements in the paddy-rice rhizosphere: Microbial mechanisms and coupling processes

Author:
Wei, Xiaomeng; Zhu, Zhenke; Wei, Liang; Wu, Jinshui; Ge, Tida
Source:
Rhizosphere 2019 v.10 pp. 100145
ISSN:
2452-2198
Subject:
rhizosphere,   etc   ; biogeochemical cycles; environmental factors; iron; microorganisms; niches; oxidation; oxygen; paddies; rice; roots; water management;     Show all 12 Subjects
Abstract:
... Rice feeds more than 50% of the world’s population, 88% of which is planted in paddy fields. Paddy-rice rhizosphere is a unique habitat characterized by redox heterogeneity that is generated from radial O2 loss from roots and intensive water management, which allows the differentiation of microbial niches in the narrow rhizosphere and leads to strong couplings of functional processes. This review ...
DOI:
10.1016/j.rhisph.2019.100145

20. Arsenic volatilization by Aspergillus sp. and Penicillium sp. isolated from rice rhizosphere as a promising eco-safe tool for arsenic mitigation

Author:
Soares Guimarães, Leandro Henrique; Segura, Fabiana Roberta; Tonani, Ludmilla; von-Zeska-Kress, Marcia Regina; Rodrigues, Jairo Lisboa; Calixto, Leandro Augusto; Silva, Fábio Ferreira; Batista, Bruno Lemos
Source:
Journal of environmental management 2019 v.237 pp. 170-179
ISSN:
0301-4797
Subject:
rhizosphere,   etc   ; Aspergillus niger; Penicillium; anthropogenic activities; arsenic; carcinogenicity; fungal growth; fungi; humans; paddy soils; rice; volatilization;     Show all 12 Subjects
Abstract:
... Arsenic (As) is a non-threshold human carcinogenic. This element can be volatilized either by nature or anthropogenic sources. In the present study, the analytical performance of an As volatile species trapping system was evaluated to assess the As volatilization promoted by Penicillium sp. and Aspergillus sp., both isolated from rice rhizosphere, and Aspergillus niger sp. considered as a referenc ...
DOI:
10.1016/j.jenvman.2019.02.060