Since the first report in Costa Rica in 1971, bean rugose mosaic virus (BRMV) has been found in Colombia, El Salvador, Guatemala and Brazil. In this study, the complete genome sequence of a soybean isolate of BRMV from Paraná State, Brazil, was determined. The BRMV genome consists of two polyadenylated RNAs. RNA1 is 5909 nucleotides long and encodes a single polypeptide of 1856 amino acids (aa), with an estimated molecular weight of 210 kDa. The RNA1 polyprotein contains the polypeptides for viral replication and proteolytic processing. RNA2 is 3644 nucleotides long and codes for a single polypeptide of 1097 aa, containing the movement and coat proteins. This is the first complete genome sequence of BRMV. When compared with available aa sequences of comoviruses, the highest identities of BRMV coat proteins and proteinase polymerase were 57.5 and 58 %, respectively. These were below the 75 and 80 % identity limits, respectively, established for species demarcation in the genus. This confirms that BRMV is a member of a distinct species in the genus Comovirus .
Archives of Virology – Springer Journals
Published: Jun 1, 2016
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