Dual benefits of <i>Bacillus velezensis</i> LJ-19: contact-dependent biocontrol of <i>Fusarium</i> wilt and growth promotion in cucumber.

ABSTRACT: Cucumber is an important economic crop widely cultivated globally. Fusarium wilt, caused by Fusarium oxysporum f. sp. cucumerinum, seriously affects its yield and quality and is difficult to control. Here, we isolated a novel Bacillus velezensisstrain (LJ-19) from cucumber rhizosphere. Through assays for antibacterial activity, enzymatic activity, detection of disease resistance genes, and plant growth-promoting activity, this strain exhibited pronounced antagonistic activity against Fusarium oxysporum f. sp. cucumerinum and possessed plant growth-promoting traits. Notably, the inhibition of Fusarium oxysporum f. sp. cucumerinum mycelial growth and spore germination by LJ-19 was primarily contact-dependent, rather than mediated by diffusible antibi

SUBMITTER: Li S 

PROVIDER: S-EPMC12738940 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature