Soil microbial legacy mediated by buckwheat flavonoids enhances cabbage resistance to clubroot disease.

ABSTRACT:

Background

The legacy of plant growth significantly impacts the health of subsequent plants, yet the mechanisms by which soil legacies in crop rotation systems influence disease resistance through rhizosphere plant-microbiome interactions remain unclear. Using a buckwheat-cabbage rotation model, we investigated how microbial soil legacies shape cabbage growth and clubroot disease resistance.

Results

Three-year field trials revealed that buckwheat rotation sustainably reduced clubroot severity by 67%-97%, regardless of pathogen load. Soil sterilization eliminated this suppression, implicating a microbial basis. Using 16S rRNA sequencing, we identified buckwheat-enriched bacterial taxa (Microbacterium, Stenotrophomonas, Ralstonia) that colonized subsequent cabbage roots. Metab

SUBMITTER: Wu J 

PROVIDER: S-EPMC12309073 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature