Bacillus amyloliquefaciens PP19 regulation of microbial communities and suppression of Peronophythora litchii.

ABSTRACT:

Background

Litchi downy blight (LDB) is a major disease affecting litchi (Litchi chinensis), damaging fruits, inflorescences, and leaves, and significantly hindering the development of the litchi industry in China and globally. Bacillus amyloliquefaciens PP19 has demonstrated significant biocontrol efficacy against LDB, but its mechanism of action remains unclear.

Results

This study used microbiome analysis and bacterial interaction studies to investigate the biocontrol mechanism by which PP19 regulates core microbial communities on litchi exocarps to suppress LDB. First, 16S rRNA diversity analysis revealed that PP19 pretreatment effectively prevented bacterial diversity imbalances caused by Peronophythora litchii infection, maintaining microbial stability by regulating the

SUBMITTER: Zheng L 

PROVIDER: S-EPMC12829244 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature