Complete genomic sequence of Pepper vein banding virus (PVBV): a distinct member of the genus Potyvirus

Abstract

The complete genomic sequence of Pepper vein banding virus (PVBV), a potyvirus infecting chilli and other solanaceous plants in south India, was determined and compared with those of other potyviruses. The viral genome contained 9711 nucleotides, excluding the poly-A tail. The length of the 5'- and 3'-untranslated regions (UTR) were 163 and 281 nucleotides respectively. As for other potyviruses, the PVBV genome has a single open reading frame (ORF) starting at nucleotide 164 and ending at nt 9430, which encodes a polyprotein of 3088 amino acid residues. There are nine putative conserved cleavage sites within the polyprotein, which can result in ten functionally distinct protein products. Phylogenetic analysis of the potyviral polyprotein sequences showed that PVBV is a distinct species of this genus.