A novel partitivirus conferring hypovirulence by affecting vesicle transport in the fungus <i>Colletotrichum</i>.

ABSTRACT: Colletotrichum spp. are economically important phytopathogenic fungi that cause anthracnose in a variety of plant species worldwide. Hypovirulence-associated mycoviruses provide new options for the biological control of plant fungal diseases. Here, we found a novel partitivirus from Colletotrichum alienum and named it Colletotrichum alienum partitivirus 1 (CaPV1). CaPV1 contained two dsRNA segments encoding an RNA-dependent RNA polymerase and a capsid protein and was classified under the genus Gammapartitivirus of the family Partitiviridae. CaPV1 significantly decreased host virulence, mycelial growth, appressorial development, and appressorium turgor but increased conidial production with abnormal morphology. In addition, CaPV1 could be successfully transfected

SUBMITTER: Zhu JZ 

PROVIDER: S-EPMC10865989 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature