Alpinia mosaic virus (AlpMV), once assigned to the genus Potyvirus , infects primarily plants of the ginger family. To seek molecular evidence for correct classification of this virus, a cDNA clone corresponding to the 3′ portion of the AlpMV genome was obtained by reverse transcriptase-PCR and TA cloning. The authenticity of the cDNA clone was confirmed by expression of the coat protein (CP) in E. coli followed by immunoblot analysis. Sequence analysis indicated that, in contrast to its low identity with all the other genera of the family Potyviridae , the deduced amino acid sequence of AlpMV CP was 42.9 ∼ 61.9% identical to members of the genus Macluravirus . Phylogenetic analysis also demonstrated that the AlpMV CP clustered with those of Cardamom mosaic virus and Chinese yam necrotic mosaic virus. These results indicate that AlpMV should be classified as a tentative species within the genus Macluravirus rather than Potyvirus as proposed previously.
Archives of Virology – Springer Journals
Published: May 1, 2003
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