A novel mitovirus isolated from  the filamentous fungus Hypoxylon fendleri

In this study, a novel mycovirus, designated “Hypoxylon fendleri mitovirus 1” (HfMV1), was isolated from this fungus. The genome of HfMV1 is 2850 nt in length with a G + C content of 36% and contains a large open reading frame (ORF) encoding an RNA-dependent RNA polymerase (RdRp). BLASTp analysis revealed that the RdRp domain of HfMV1 had 28.30–50.90% sequence identity to those of members of the genusDuamitovirus and had the highest identity (50.90%) to Fusarium graminearum mitovirus 2-2 (FgMV2-2). Phylogenetic analysis further indicated that HfMV1 is a member of the genusDuamitovirus of the familyMitoviridae. This is the first report of a mycovirus inH. fendleri.

Source: Archives of Virology - July 1, 2023 Category: Virology Source Type: research