A virus from entomopathogenic fungus BbrVV1 trans-species transmission attenuates plant pathogenic fungi and its application in the prevention and control of plant diseases

Abstract

The present application relates to the field of microbial technology, in particular to a virus BbrVV1 from entomogenous fungi which can be transmitted across species and used for preventing and controlling plant pathogenic fungi. The present application provides a new Victoria virus isolated from Beauveria bassiana, an important entomogenous fungi and biocontrol fungi, and named as BbrVV1. The virus can significantly inhibit the growth rate of the strain, change the morphology of the colony, reduce the spore production of the strain and the virulence of the host strain to Asian corn borer after infecting the strain of Beauveria bassiana. However, the virus can improve the antagonistic ability of the host strain of Beauveria bassiana to Sclerotinia sclerotiorum and Asian Fusarium. In addition, the virus can be transmitted across species to Sclerotinia sclerotiorum and Asian Fusarium and can be transmitted within the species of Sclerotinia sclerotiorum and Asian Fusarium. Most importantly, the virus can significantly reduce the pathogenicity of Sclerotinia sclerotiorum and Asian Fusarium. Therefore, the present application provides a new strategy for the biological control of Sclerotinia sclerotiorum and Asian Fusarium.

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