Sequence diversity in the coat protein and 3″-untranslated region of Chinese yam necrotic mosaic virus RNA

Abstract

Sixteen isolates of Chinese yam necrotic mosaic virus (ChYNMV) were collected from nine sites in Japan and one site in Korea, and 1098 nucleotides of the 3″-terminal of the genome were sequenced. Identity of the coat protein gene was 95.5%–99.7% among the isolates. Substitution in the deduced amino acids of the coat protein ranged from 0 to 7, mainly in the N-terminal region. The 3″-untranslated region consisted of 231 nucleotides, which had 96.5%–100% nucleotide identity among the isolates. Sequence diversity was considerably less in ChYNMV than in Yam mosaic virus or Japanese yam mosaic virus.