Diterpenoid Phytoalexins Shape Rice Root Microbiomes and Their Associations With Root Parasitic Nematodes.

ABSTRACT: Rice synthesises diterpenoid phytoalexins (DPs) which are known to operate in defence against foliar microbial pathogens and the root-knot nematode Meloidogyne graminicola. Here, we examined the role of DPs in shaping rice-associated root microbiomes in nematode-infested field soil. Further, we assessed how DPs affect interactions between the root microbiomes and M. graminicola. We used 16S and ITS2 rRNA gene amplicon analysis to characterise the root- and rhizosphere-associated microbiomes of DP knock-out rice mutants and their wild-type parental line, at an early (17 days) and late (28 days) stage of plant development in field soil. Disruption of DP synthesis resulted in distinct changes in the composition and structure of microbial communities both relative to the parental/wild-type lin

SUBMITTER: Kudjordjie EN 

PROVIDER: S-EPMC11950907 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature