Soil microbiomes vary in their ability to confer drought tolerance to Arabidopsis

Zolla, Gastón; Badri, Dayakar V.; Bakker, Matthew G.; Manter, Daniel K.; Vivanco, Jorge M.

doi:10.1016/j.apsoil.2013.03.007

Cited by 153 publications

(85 citation statements)

References 48 publications

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“…Similarly, Lau and Lennon (2011) demonstrated that microbial community structure affects natural plant trait selections. Additionally, it has been established that distinct microbial communities influence plants' ability to tolerate abiotic stress such as drought (Zolla et al, 2013) and even affect leaf metabolome and subsequent insect feeding (Badri et al, 2013b). These examples highlight the multifaceted nature of the interactions in the rhizosphere microbiome.…”

Section: Discussionmentioning

confidence: 99%

Rhizosphere microbiome assemblage is affected by plant development

2013

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There is a concerted understanding of the ability of root exudates to influence the structure of rhizosphere microbial communities. However, our knowledge of the connection between plant development, root exudation and microbiome assemblage is limited. Here, we analyzed the structure of the rhizospheric bacterial community associated with Arabidopsis at four time points corresponding to distinct stages of plant development: seedling, vegetative, bolting and flowering. Overall, there were no significant differences in bacterial community structure, but we observed that the microbial community at the seedling stage was distinct from the other developmental time points. At a closer level, phylum such as Acidobacteria, Actinobacteria, Bacteroidetes, Cyanobacteria and specific genera within those phyla followed distinct patterns associated with plant development and root exudation. These results suggested that the plant can select a subset of microbes at different stages of development, presumably for specific functions. Accordingly, metatranscriptomics analysis of the rhizosphere microbiome revealed that 81 unique transcripts were significantly (Po0.05) expressed at different stages of plant development. For instance, genes involved in streptomycin synthesis were significantly induced at bolting and flowering stages, presumably for disease suppression. We surmise that plants secrete blends of compounds and specific phytochemicals in the root exudates that are differentially produced at distinct stages of development to help orchestrate rhizosphere microbiome assemblage.

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Section: Discussionmentioning

confidence: 99%

Rhizosphere microbiome assemblage is affected by plant development

2013

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“…This study (Mendes et al, 2011) is particularly thorough, as it applied concurrent analysis using both culturedependent and -independent approaches and demonstrated the ability of a sympatric soil microbiome to increase Arabidopsis growth under drought conditions (Zolla et al, 2013). Against the convention of a single bacterial application to combat drought, this study unraveled the importance of the soil microbiome as a whole in alleviating drought stress.…”

Section: Alteration In Root Secretionsmentioning

confidence: 98%

Functional Soil Microbiome: Belowground Solutions to an Aboveground Problem

2014

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There is considerable evidence in the literature that beneficial rhizospheric microbes can alter plant morphology, enhance plant growth, and increase mineral content. Of late, there is a surge to understand the impact of the microbiome on plant health. Recent research shows the utilization of novel sequencing techniques to identify the microbiome in model systems such as Arabidopsis (Arabidopsis thaliana) and maize (Zea mays). However, it is not known how the community of microbes identified may play a role to improve plant health and fitness. There are very few detailed studies with isolated beneficial microbes showing the importance of the functional microbiome in plant fitness and disease protection. Some recent work on the cultivated microbiome in rice (Oryza sativa) shows that a wide diversity of bacterial species is associated with the roots of field-grown rice plants. However, the biological significance and potential effects of the microbiome on the host plants are completely unknown. Work performed with isolated strains showed various genetic pathways that are involved in the recognition of host-specific factors that play roles in beneficial host-microbe interactions. The composition of the microbiome in plants is dynamic and controlled by multiple factors. In the case of the rhizosphere, temperature, pH, and the presence of chemical signals from bacteria, plants, and nematodes all shape the environment and influence which organisms will flourish. This provides a basis for plants and their microbiomes to selectively associate with one another. This Update addresses the importance of the functional microbiome to identify phenotypes that may provide a sustainable and effective strategy to increase crop yield and food security.

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“…Recently, this approach has been applied to inhibit plant diseases including sugar beet infection, potato common scab and tobacco black root rot [33]. In addition, using Arabidopsis thaliana as a plant model, transfer of microbiomes from sympatric soil has shown capability to alleviate drought stress and increase biomass under drought conditions [34]. However, microbiome transfer is limited by the availability of functional native microbiome.…”

Section: Engineering Of Plant Microbiomementioning

confidence: 99%

“…Plants Native root-associated microbiota transplant [33,34] Inhibit plant diseases, resist environmental stresses, promote growth…”

Section: Microbiome Transfermentioning

confidence: 99%

Microbiome engineering: Current applications and its future

Foo

Ling

Lee

2017

Biotechnology Journal

156

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Microbiomes exist in all ecosystems and are composed of diverse microbial communities. Perturbation to microbiomes brings about undesirable phenotypes in the hosts, resulting in diseases and disorders, and disturbs the balance of the associated ecosystems. Engineering of microbiomes can be used to modify structures of the microbiota and restore ecological balance. Consequently, microbiome engineering has been employed for improving human health and agricultural productivity. The importance and current applications of microbiome engineering, particularly in humans, animals, plants and soil is reviewed. Furthermore, we explore the challenges in engineering microbiome and the future of this field, thus providing perspectives and outlook of microbiome engineering.

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Soil microbiomes vary in their ability to confer drought tolerance to Arabidopsis

Cited by 153 publications

References 48 publications

Rhizosphere microbiome assemblage is affected by plant development

Rhizosphere microbiome assemblage is affected by plant development

Functional Soil Microbiome: Belowground Solutions to an Aboveground Problem

Microbiome engineering: Current applications and its future

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