Abstract
In this study, we describe a novel mycovirus isolated from Ustilaginoidea virens strain GZ-2, which was designated "Ustilaginoidea virens nonsegmented virus 2" (UvNV-2). The genome of UvNV-2 contains two overlapping open reading frames (ORFs). ORF1 encodes an unknown protein, and ORF2 encodes a putative RNA-dependent RNA polymerase (RdRp), which is most closely related to that of Purpureocillium lilacinum nonsegmented virus 1 (PINV-1) and is likely to be expressed by a +1 ribosomal frameshift within the sequence CCC_UUU_UAG. A phylogenetic analysis of the RdRp of UvNV-2 showed that UvNV-2 is an unclassified mycovirus.
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