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Phylogenetic analyses of an isolate obtained from potato in 1985 revealed potato virus X was introduced to China via multiple events

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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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Acknowledgements

We thank Dr. Ru-Gang Li for providing the PVX isolate. This study was supported by grants from Natural Scientific Foundation of China (NSFC, 30471138, 30971895) and Shandong Province (Z2007D04), Special Research Fund for the Doctoral Program of Higher Education (SRFDP, 20080434006), and New Century Excellent Young Talents in the Universities (NCET-07-0520).

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Authors and Affiliations

  1. Department of Plant Pathology, College of Plant Protection, Shandong Agricultural University, Tai’an, Shandong, 271018, China

    Xiao-Qing Yu, Jin-Lei Jia, Cheng-Ling Zhang & Xiang-Dong Li

  2. Plant Protection Station of Shandong Province, Ji’nan, Shandong, 250100, China

    Xiao-Qing Yu

  3. Department of Tobacco Sciences, College of Plant Protection, Shandong Agricultural University, Ji’nan, Shandong, 271018, China

    Yu-Jun Wang

Authors
  1. Xiao-Qing Yu
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  2. Jin-Lei Jia
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  3. Cheng-Ling Zhang
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  4. Xiang-Dong Li
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  5. Yu-Jun Wang
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Corresponding authors

Correspondence to Xiang-Dong Li or Yu-Jun Wang.

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Xiao-Qing Yu, Cheng-Ling Zhang and Jin-Lei Jia have contributed equally to this research.

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Yu, XQ., Jia, JL., Zhang, CL. et al. Phylogenetic analyses of an isolate obtained from potato in 1985 revealed potato virus X was introduced to China via multiple events. Virus Genes 40, 447–451 (2010). https://doi.org/10.1007/s11262-010-0468-5

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  • DOI: https://doi.org/10.1007/s11262-010-0468-5

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