Identification of Two New Isolates of Chilli veinal mottle virus From Different Regions in China: Molecular Diversity, Phylogenetic and Recombination Analysis
文献类型： 外文期刊
作者： Rao, Shaofei 1 ; Chen, Xuwei 1 ; Qiu, Shiyou 1 ; Peng, Jiejun 1 ; Zheng, Hongying 1 ; Lu, Yuwen 1 ; Wu, Guanwei 1 ; Chen, 1 ;
作者机构： 1.Ningbo Univ, Minist Agr & Zhejiang Prov, State Key Lab Managing Biot & Chem Threats Qual &, Inst Plant Virol,Key Lab Biotechnol Plant Protect, Ningbo, Peoples R China
2.Guangxi Acad Agr Sci, Biotechnol Res Inst, Nanning, Peoples R China
3.Dali Bai Autonomous Prefecture Acad Agr Sci & Ext, Dali, Peoples R China
关键词： Chilli veinal mottle virus; phylogenetic analysis; recombination; genetic diversity; evolution
期刊名称：FRONTIERS IN MICROBIOLOGY （ 影响因子：5.64； 五年影响因子：6.32 ）
ISSN： 1664-302X
年卷期： 2020 年 11 卷
页码：
收录情况： SCI
摘要： Chilli veinal mottle virus (ChiVMV) is an important plant pathogen with a wide host range, causing serious yield losses in pepper production all over the world. Recombination is a major evolutionary event for single-stranded RNA viruses, which helps isolates adapt to new environmental conditions and hosts. Recombination events have been identified in multiple potyviruses, but so far, there have been no reports of recombination events among the ChiVMV population. We here detected ChiVMV in pepper samples collected from Guangxi and Yunnan provinces for the first time and amplified the nearly full-length sequences. Phylogenetic and recombination analysis were performed using the new sequences and the 14 full-length and 23 capsid protein (CP) sequences available in GenBank. Isolates tend to cluster on a geographical basis, indicating that geographic-driven evolution may be an important determinant of ChiVMV genetic differences. A total of 10 recombination events were detected among the ChiVMV sequences using RDP4 with a strict algorithm, and both the Guangxi and Yunnan isolates were identified as recombinants. Recombination appears to be a significant factor affecting the diversity of ChiVMV isolates.
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