Antagonistic mechanism of <i>Bacillus velezensis</i> HX0039 as a biocontrol agent against <i>Trichoderma virens</i>-induced "Sanghuang" green mold.

ABSTRACT: Green mold disease caused by Trichoderma spp. is one of the serious challenges in the production of "Sanghuang" mushroom (Sanghuangporus vaninii). Herein, we report the biocontrol efficacy and related mechanisms of Bacillus velezensis HX0039, an antagonistic strain previously isolated from soil for field cultivation of the "Sanghuang" mushroom. Strain HX0039 exhibited broad-spectrum activity against 17 fungal pathogens, especially Trichoderma virens SH4 (a highly pathogenic strain causing "Sanghuang" green mold), and increased the cell membrane permeability of T. virens in vitro. In the "Sanghuang" mode of green mold disease, HX0039 had no negative effects on the mycelial growth or fruiting body formation of mushrooms and exhibited excellent biocontrol ef

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC12366312 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature