The soil bacterial community regulates germination of Plasmodiophora brassicae resting spores rather than root exudates.

ABSTRACT: Clubroot, caused by Plasmodiophora brassicae, is a severe soil-borne disease that restricts the production of cruciferous crops worldwide. A better understanding of biotic and abiotic factors regulating germination of P. brassicae resting spores in the soil is significant for developing novel control methods. Previous studies reported that root exudates can trigger P. brassicae resting spore germination, thus enabling a targeted attack of P. brassicae on host plant roots. However, we found that native root exudates collected under sterile conditions from host or non-host plants cannot stimulate the germination of sterile spores, indicating that root exudates may not be direct stimulation factors. Instead, our studies demonstrate that soil bacteria are essential for triggering germination.

SUBMITTER: Wang Y 

PROVIDER: S-EPMC9980788 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature