Virus Genes (2010) 40, 447-451

Xiao-Qing Yu, Jin-Lei Jia, Cheng-Ling Zhang, Xiang-Dong Li and Yu-Jun Wang (2010)
Phylogenetic analyses of an isolate obtained from potato in 1985 revealed Potato virus X was introduced to China via multiple events
Virus Genes 40 (3), 447-451
Abstract: Potato virus X (PVX) is one of the most common plant viruses that cause great economic losses to solanaceous plants. We have previously reported the complete genomic sequence of the 2006 Chinese potato isolate FX21 and demonstrated that PVX isolates cluster into two groups: Eurasia and America. Here, we present the complete genomic sequence of one PVX isolate collected from potato in 1985 (PVX-1985). The genome of PVX-1985 is identical to that of FX21 in length and has the same genomic structure. PVX-1985, which like FX21 fell within the Eurasia group, clustered together with isolates from Europe, whereas FX21 clustered together with isolates of primarily Asian origin. Phylogenetic analyses of the complete genomic sequences and of CP gene sequences showed that Chinese PVX isolates have different origins and were introduced via multiple events. Though all the open reading frames of PVX are under negative/purifying selection, the central region of RNA-dependent RNA polymerase is under positive/diversifying selection.
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Link to article at publishers website
Database assignments for author(s): Xiang-Dong Li

Research topic(s) for pests/diseases/weeds:
molecular biology - genes

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Potato virus X	Potato (Solanum tuberosum)