Molecular diversity of tobacco vein banding mosaic virus
Molecular diversity of tobacco vein banding mosaic virus
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DOI：
10.1007/s00705-007-1020-3
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发表时间：
2007-07
影响因子：
2.7
通讯作者：
Y.-P. Tian;J.-L. Liu;X. Yu;L. Lei;X.-P. Zhu;J. Valkonen;X. Li
中科院分区：
文献类型：
--
作者：
Y.-P. Tian;J.-L. Liu;X. Yu;L. Lei;X.-P. Zhu;J. Valkonen;X. Li
烟草脉带花叶病毒（TVBMV）在中国大陆烟草生产中的重要性日益增加。测定了12个TVBMV中国分离物的3′-末端基因组序列（1624个核苷酸），并与数据库中仅有的4个TVBMV分离物的序列进行了比较。结果表明，TVBMV由几个遗传上可区分的株系组成，这些株系与地理来源有一定程度的相关性。来自云南的两个分离物具有独特的推定NIb/CP蛋白水解切割位点Q/N，这在马铃薯Y病毒中是不常见的，而其他TVBMV分离物在该位点具有更典型的Q/G氨基酸。来自山东淄博的一个分离物（ZB 6）被预测在特征基因组区域内经历重组。
Tobacco vein banding mosaic virus (TVBMV) is of increasing importance in tobacco production on the Chinese mainland. The 3′-terminal genomic sequences (1624 nucleotides) of 12 TVBMV isolates from China were determined and compared to the sequences of only four TVBMV isolates available in databanks. The results revealed that TVBMV consists of several phylogenetically distinguishable strains that show a degree of correlation with the geographical origin. Two isolates from Yunnan had a unique putative NIb/CP proteolytic cleavage site of Q/N that is uncommon for potyviruses, whereas other TVBMV isolates had the more typical Q/G amino acids at that site. One isolate (ZB6) from Zibo, Shandong Province, was predicted to have experienced recombination within the characterized genomic region.