Degenerate primers were used to amplify virus sequences from imported lilies in Zhejiang province, China. Two viruses, Lily mottle virus (LMoV, genus Potyvirus ) and Lily symptomless virus (LSV, genus Carlavirus ) were detected, purified and completely sequenced from a mixed infection in a plant raised from bulbs imported from the Netherlands. The sequence of LMoV was 9644 nt long and encoded a polyprotein of 3095 amino acids with a calculated M r of 351.0 kDa that had only 45.1–54.4% identity to other completely sequenced potyviruses. Phylogenetic analysis of the complete polyproteins of members of the genus demonstrated that LMoV was distantly grouped with LYSV, BYMV and ClYVV. Two partial LMoV sequences from different cultivars were identical to one another and very similar (98.3% identical nucleotides) to the corresponding region of the complete sequence. Analysis of the coat protein sequences of LMoV isolates revealed two subgroups, corresponding to the earlier “Tulip breaking virus lily strain” and “Tulip band breaking virus” isolates. Our newly-determined isolates showed an extremely close relationship to the first of these. The LSV sequence was 8393 nucleotides long and had the typical carlavirus genome organization. The ORF1 protein was most closely related to that of Blueberry scorch virus (57.2% identical amino acids). Sequences of 1796 nt at the 3′-end of three additional LSV isolates from different cultivars were very similar (>98% identical nucleotides) to the corresponding region of the complete sequence. This is the first report of complete sequences for LMoV and LSV.
Archives of Virology – Springer Journals
Published: Dec 1, 2003
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