Mitsuaria sp. and Burkholderia sp. from Arabidopsis rhizosphere enhance drought tolerance in Arabidopsis thaliana and maize (Zea mays L.)

Huang, Xing‐Feng; Zhou, Dongmei; Lapsansky, Erin R.; Reardon, Kenneth F.; Guo, Jianhua; Andales, Marie J.; Vivanco, Jorge M.; Manter, Daniel K.

doi:10.1007/s11104-017-3360-4

Cited by 63 publications

(35 citation statements)

References 86 publications

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“…and Burkholderia sp. confer the greatest drought tolerance to Arabidopsis and maize [23]. This suggests that application of beneficial microbiome to new host could result in a positive effect.…”

Section: Discussionmentioning

confidence: 99%

Rhizosphere Microbiomes from Root Knot Nematode Non-infested Plants Suppress Nematode Infection

et al. 2019

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Root knot nematodes (RKN, Meloidogyne spp.) are serious pathogens of numerous crops worldwide. Understanding the roles plant rhizosphere soil microbiome play during RKN infection is very important. The current study aims at investigating the impacts of soil microbiome on the activity of RKN. In this study, the 16S rRNA genes of the bacterial communities from nematode-infested and non-infested rhizosphere soils from four different plants were sequenced on the Illumina Hi-Seq platform. The soil microbiome effects on RKN infection were tested in a greenhouse assay. The non-infested soils had more microbial diversity than the infested soils from all plant rhizospheres, and both soil types had exclusive microbial communities. The inoculation of the microbiomes from eggplant and cucumber non-infested soils to tomato plants significantly alleviated the RKN infection, while the microbiome from infested soil showed increased the RKN infection. Furthermore, bacteria Pseudomonas sp. and Bacillus sp. were screened out from non-infested eggplant soil and exhibited biocontrol activity to RKN on tomato. Our findings suggest that microbes may regulate RKN infection in plants and are involved in biocontrol of RKN. Electronic supplementary material The online version of this article (10.1007/s00248-019-01319-5) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Rhizosphere Microbiomes from Root Knot Nematode Non-infested Plants Suppress Nematode Infection

et al. 2019

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“…and Burkholderia sp. [39] under water deprivation conditions. A universal component of the plant response to drought stress is the accumulation of ROS, compounds that are cytotoxic if allowed to build up to an excessive level, and which therefore need to be neutralized [40,41].…”

Section: Discussionmentioning

confidence: 99%

Epsc Involved in the Encoding of Exopolysaccharides Produced by Bacillus amyloliquefaciens FZB42 Act to Boost the Drought Tolerance of Arabidopsis thaliana

Lü

Liu

Yue

et al. 2018

IJMS

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Bacillus amyloliquefaciens FZB42 is a plant growth-promoting rhizobacteria that stimulates plant growth, and enhances resistance to pathogens and tolerance of salt stress. Instead, the mechanistic basis of drought tolerance in Arabidopsis thaliana induced by FZB42 remains unexplored. Here, we constructed an exopolysaccharide-deficient mutant epsC and determined the role of epsC in FZB42-induced drought tolerance in A. thaliana. Results showed that FZB42 significantly enhanced growth and drought tolerance of Arabidopsis by increasing the survival rate, fresh and dry shoot weights, primary root length, root dry weight, lateral root number, and total lateral root length. Coordinated changes were also observed in cellular defense responses, including elevated concentrations of proline and activities of superoxide dismutase and peroxidase, decreased concentrations of malondialdehyde, and accumulation of hydrogen peroxide in plants treated with FZB42. The relative expression levels of drought defense-related marker genes, such as RD29A, RD17, ERD1, and LEA14, were also increased in the leaves of FZB42-treated plants. In addition, FZB42 induced the drought tolerance in Arabidopsis by the action of both ethylene and jasmonate, but not abscisic acid. However, plants inoculated with mutant strain epsC were less able to resist drought stress with respect to each of these parameters, indicating that epsC are required for the full benefit of FZB42 inoculation to be gained. Moreover, the mutant strain was less capable of supporting the formation of a biofilm and of colonizing the A. thaliana root. Therefore, epsC is an important factor that allows FZB42 to colonize the roots and induce systemic drought tolerance in Arabidopsis.

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“…Recent information on the utilization of rhizospheric microorganisms in enhancing soil health and agricultural sustainability has been extensively reviewed [63,[68][69][70][71][72]. PGPR have been utilized in several crops such as garden pea (Pisum sativum L.) [73][74][75], maize (Zea mays) [21,[76][77][78][79], green gram (Vigna radiate L.) [44,52,[80][81][82], cucumber (Cucumis sativus L.) [83], potato (Solanum tuberosum L.) [44,84], sorghum (Sorghum bicolar) [85], wheat (Triticum aestivum) [86][87][88], foxtail millet (Setaria italica L.) [89] and lettuce (Lactuca sativa) [90]. The various mechanisms used by the PGPR for mitigation of water stress in plants are summarized in Table 2.…”

Section: Drought Stress Mitigation In Plants: Utilization Of Plant Grmentioning

confidence: 99%

Plant Growth Promoting Rhizobacterial Mitigation of Drought Stress in Crop Plants: Implications for Sustainable Agriculture

2019

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Abiotic stresses arising from climate change negates crop growth and yield, leading to food insecurity. Drought causes oxidative stress on plants, arising from excessive production of reactive oxygen species (ROS) due to inadequate CO2, which disrupts the photosynthetic machinery of plants. The use of conventional methods for the development of drought-tolerant crops is time-consuming, and the full adoption of modern biotechnology for crop enhancement is still regarded with prudence. Plant growth-promoting rhizobacteria (PGPR) could be used as an inexpensive and environmentally friendly approach for enhancing crop growth under environmental stress. The various direct and indirect mechanisms used for plant growth enhancement by PGPR were discussed. Synthesis of 1-aminocyclopropane−1-carboxylate (ACC) deaminase enhances plant nutrient uptake by breaking down plant ACC, thereby preventing ethylene accumulation, and enable plants to tolerate water stress. The exopolysaccharides produced also improves the ability of the soil to withhold water. PGPR enhances osmolyte production, which is effective in reducing the detrimental effects of ROS. Multifaceted PGPRs are potential candidates for biofertilizer production to lessen the detrimental effects of drought stress on crops cultivated in arid regions. This review proffered ways of augmenting their efficacy as bio-inoculants under field conditions and highlighted future prospects for sustainable agricultural productivity.

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Mitsuaria sp. and Burkholderia sp. from Arabidopsis rhizosphere enhance drought tolerance in Arabidopsis thaliana and maize (Zea mays L.)

Cited by 63 publications

References 86 publications

Rhizosphere Microbiomes from Root Knot Nematode Non-infested Plants Suppress Nematode Infection

Rhizosphere Microbiomes from Root Knot Nematode Non-infested Plants Suppress Nematode Infection

Epsc Involved in the Encoding of Exopolysaccharides Produced by Bacillus amyloliquefaciens FZB42 Act to Boost the Drought Tolerance of Arabidopsis thaliana

Plant Growth Promoting Rhizobacterial Mitigation of Drought Stress in Crop Plants: Implications for Sustainable Agriculture

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