The effects of soil phosphorus content on plant microbiota are driven by the plant phosphate starvation response.

ABSTRACT: Phosphate starvation response (PSR) in nonmycorrhizal plants comprises transcriptional reprogramming resulting in severe physiological changes to the roots and shoots and repression of plant immunity. Thus, plant-colonizing microorganisms-the plant microbiota-are exposed to direct influence by the soil's phosphorus (P) content itself as well as to the indirect effects of soil P on the microbial niches shaped by the plant. The individual contribution of these factors to plant microbiota assembly remains unknown. To disentangle these direct and indirect effects, we planted PSR-deficient Arabidopsis mutants in a long-term managed soil P gradient and compared the composition of their shoot and root microbiota to wild-type plants across different P concentrations. PSR-deficiency had a larger ef

SUBMITTER: Finkel OM 

PROVIDER: S-EPMC6876890 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature