Identification and Complete Genome Sequence of Mulberry Cryptic Virus (Genus Deltapartitivirus Family Partitiviridae)

Abstract A cryptic virus, named Mulberry cryptic virus (MuCV), was identified in mulberry (Morus alba) transcriptome dataset and RACE methods. The genome sequence of MuCV composed of two double-stranded RNAs (dsRNA) of 1605 bp and 1627 bp in size, encoding an RNA-dependent RNA polymerase (RdRp) and a coat protein (CP), respectively. The 5'-AGAAUUAU-3' sequence in the 5'-UTR was conserved in the two dsRNAs. The sequence similarity and phylogenetic analyses based on the RdRp and CP both indicated that MuCV is a deltapartitivirus (Family Partitiviridae).