Full-length genome characterization of a novel mitovirus isolated from the root rot fungus Armillaria mellea

In this study, a new mitovirus denominated “Armillaria mellea mitovirus 1” (AmMV1) was identified in the sporophore samples ofArmillaria mellea, commonly known as honey mushroom. AmMV1 has a genome length of 4440 nucleotides and a G  + C content of 48%. It encompasses a single open reading frame (ORF) that encodes an RNA-dependent RNA polymerase (RdRp). Comparison through BLASTp analysis revealed that the RdRp domain of AmMV1 shares a sequence identity ranging from 33.43% to 43.27% with RdRp domains ofDuamitovirus genus members, having the highest similarity (43.27%) to Rhizoctonia solani mitovirus 94. According to phylogenetic analysis, AmMV1 is classified as a member of the genusDuamitovirus belonging to theMitoviridae family. This marks the initial instance of a mitovirus identified inArmillaria spp..

Source: Virus Genes - December 16, 2023 Category: Genetics & Stem Cells Source Type: research