Antifungal and plant growth promotion activity of volatile organic compounds produced by Bacillus amyloliquefaciens.

ABSTRACT: Fusarium wilt of watermelon, caused by F. oxysporum f.sp. niveum (FON), is a devastating disease that causes extensive losses throughout the world. Five bacterial strains (L3, h, β, b, and L) isolated from the watermelon rhizosphere showed antagonistic activity against FON during in vitro tests. Strain L3 produced diffusible and volatile organic compounds (VOCs) which showed the strongest antifungal activity. Arabidopsis thaliana plantlets exposed to VOCs produced by strain L3 showed a 2.39-fold increase in biomass, 1.40-fold increase in primary root length, and 5.05-fold increase in number of lateral roots. Confocal laser scanning microscope showed that the GFP-labeled strain L3 could colonize along the elongation and differentiation zones of watermelon roots. In greenhouse pot experiment

SUBMITTER: Wu Y 

PROVIDER: S-EPMC6692555 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature