Soil composition and plant genotype determine benzoxazinoid-mediated plant-soil feedbacks in cereals.

ABSTRACT: Plant-soil feedbacks refer to effects on plants that are mediated by soil modifications caused by the previous plant generation. Maize conditions the surrounding soil by secretion of root exudates including benzoxazinoids (BXs), a class of bioactive secondary metabolites. Previous work found that a BX-conditioned soil microbiota enhances insect resistance while reducing biomass in the next generation of maize plants. Whether these BX-mediated and microbially driven feedbacks are conserved across different soils and response species is unknown. We found the BX-feedbacks on maize growth and insect resistance conserved between two arable soils, but absent in a more fertile grassland soil, suggesting a soil-type dependence of BX feedbacks. We demonstrated that wheat also responded to BX-feedba

SUBMITTER: Cadot S 

PROVIDER: S-EPMC9292949 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature