Complete genome sequence of a novel potyvirus, callistephus mottle virus, identified in Callistephus chinensis

Abstract

The complete genomic sequence of a novel putative member of the genus Potyvirus was detected from Callistephus chinensis (China aster) in South Korea. The genomic RNA consists of 9,859 nucleotides (excluding the 3′ poly(A) tail) and contains the typical open reading frame of potyviruses, encoding a putative large polyprotein of 3,154 amino acids. The Callistephus virus is most closely related to plum pox virus and members of the ApVY subgroup which showed 50-52A？% polyprotein amino acid sequence identity. These results suggest that the Callistephus virus is a novel member of the genus Potyvirus, tentatively named “callistephus mottle virus” (CalMV).