Plant-derived coumarins shape the composition of an Arabidopsis synthetic root microbiome.

ABSTRACT: The factors that contribute to the composition of the root microbiome and, in turn, affect plant fitness are not well understood. Recent work has highlighted a major contribution of the soil inoculum in determining the composition of the root microbiome. However, plants are known to conditionally exude a diverse array of unique secondary metabolites, that vary among species and environmental conditions and can interact with the surrounding biota. Here, we explore the role of specialized metabolites in dictating which bacteria reside in the rhizosphere. We employed a reduced synthetic community (SynCom) of Arabidopsis thaliana root-isolated bacteria to detect community shifts that occur in the absence of the secreted small-molecule phytoalexins, flavonoids, and coumarins. We find tha

SUBMITTER: Voges MJEEE 

PROVIDER: S-EPMC6589675 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature