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Complete genome sequence of a Chinese isolate of pepper vein yellows virus and evolutionary analysis based on the CP, MP and RdRp coding regions

文献类型： 外文期刊

作者： Liu, Maoyan 2 ; Liu, Xiangning 1 ; Li, Xun 1 ; Zhang, Deyong 5 ; Dai, Liangyin 1 ; Tang, Qianjun 1 ;

作者机构： 1.Hunan Agr Univ, Coll Plant Protect, Changsha 410128, Hunan, Peoples R China

2.Hunan Agr Univ, Hunan Prov Key Lab Biol & Control Plant Dis & Ins, Changsha 410128, Hunan, Peoples R China

3.Hunan Agr Univ, Inst Virus Res, Changsha 410128, Hunan, Peoples R China

4.Iowa State Univ, Dept Plant Pathol & Microbiol, Ames, IA 50010 USA

5.Hunan Acad Agr Sci, Inst Plant Protect, Changsha 410125, Hunan, Pe

关键词： Pepper vein yellows virus;Deep sequencing;Complete genome;Molecular evolution

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.574； 五年影响因子：2.466 ）

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收录情况： SCI

摘要： The genome sequence of pepper vein yellows virus (PeVYV) (PeVYV-HN, accession number KP326573), isolated from pepper plants (Capsicum annuum L.) grown at the Hunan Vegetables Institute (Changsha, Hunan, China), was determined by deep sequencing of small RNAs. The PeVYV-HN genome consists of 6244 nucleotides, contains six open reading frames (ORFs), and is similar to that of an isolate (AB594828) from Japan. Its genomic organization is similar to that of members of the genus Polerovirus. Sequence analysis revealed that PeVYV-HN shared 92 % sequence identity with the Japanese PeVYV genome at both the nucleotide and amino acid levels. Evolutionary analysis based on the coat protein (CP), movement protein (MP), and RNA-dependent RNA polymerase (RdRP) showed that PeVYV could be divided into two major lineages corresponding to their geographical origins. The Asian isolates have a higher population expansion frequency than the African isolates. Negative selection and genetic drift (founder effect) were found to be the potential drivers of the molecular evolution of PeVYV. Moreover, recombination was not the distinct cause of PeVYV evolution. This is the first report of a complete genomic sequence of PeVYV in China.

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