The coat protein (CP) genes of the genomic RNA of two Korean isolates of sweet potato feathery mottle potyvirus (SPFMV), SPFMV-K1 and SPFMV-K2, were cloned and their complete nucleotide sequences were determined. Sequence comparisons of the two Korean isolates showed 97.8% amino acid identity in the CP cistron, and 79.9% to 99.0% identity with those of 6 other known SPFMV strains. Of 74 amino acid changes totally among the SPFMV strains, 39 changes were located at the N-terminal region. Pairwise amino acid sequence comparison revealed sequence similarities of 48.6 to 70.2% between SPFMV and 20 other potyviruses, indicating SPFMV to be a quite distinct species. Multiple alignment of the CP cistrons from other potyviruses showed that most of the conserved amino acid residues of the genus Potyvirus are well preserved in the corresponding locations.
Archives of Virology – Springer Journals
Published: Mar 1, 1998
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