Complete genome sequence of Stellaria aquatica virus B, a novel polerovirus that infects Stellaria aquatica.

The complete genome sequence of Stellaria aquatica virus B (StAVB), a new member of the genus Polerovirus that infects Stellaria aquatica, was determined using high-throughput RNA sequencing with confirmation by Sanger sequencing. The complete StAVB genome (GenBank accession no. OP389993) is 5,900 nucleotide (nt) long with seven open reading frames (ORF0-5 and ORF3a) that encode putative proteins (P0-P5 and P3a) in a similar configuration to that of other typical poleroviruses. Pairwise sequence comparisons with other poleroviruses showed 38-50% nt sequence identity in the complete genome and 13-24%, 36-45%, 7-68%, and 6-50% amino acid sequence identity in (aa), for the P0, P1-2, P3, and P4 protein, respectively. These data, together with the results of phylogenetic analysis, indicate that StAVB should be classified as a new member of the genus Polerovirus, family Solemoviridae.