Transcriptomic analysis of entomopathogenic fungus Beauveria bassiana infected by a hypervirulent polymycovirus BbPmV-4

Fungal Biol. 2023 Mar;127(3):958-967. doi: 10.1016/j.funbio.2023.02.003. Epub 2023 Feb 20.

Abstract

Polymycoviridae is a recently established family of mycoviruses. Beauveria bassiana polymycovirus 4 (BbPmV-4) was previously reported. However, the effect of the virus on host fungus B. bassiana was not clarified. Here, a comparison between virus-free and virus-infected isogenic lines of B. bassiana revealed that BbPmV-4 infection of B. bassiana changes morphology and could lead to decreases in conidiation and increases in virulence against Ostrinia furnacalis larvae. The differential expression of genes between virus-free and virus-infected strains was compared by RNA-Seq and was consistent with the phenotype of B. bassiana. The enhanced pathogenicity may be related to the significant up-regulation of genes encoding mitogen activated protein kinase, cytochrome P450, and polyketide synthase. The results enable studies of the mechanism of interaction between BbPmV-4 and B. bassiana.

Keywords: Beauveria bassiana polymycovirus 4; Entomopathogenic fungi; Hypervirulence; Transcriptome.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Beauveria*
  • Gene Expression Profiling
  • Moths* / microbiology
  • Transcriptome
  • Virulence