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Isolation and molecular characterization of a distinct begomovirus and its associated betasatellite infecting Hedyotis uncinella (Hook. et Arn.) in Vietnam

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文献类型：外文期刊

作者： Du, Zhenguo ² ; Chen, Meixiang ³ ; Wang, Zhen ⁴ ; Liu, Yong ³ ; Zhang, Songbai ⁴ ; He, Zifu ¹ ;

作者机构： 1.Guangdong Acad Agr Sci, Plant Protect Res Inst, Guangzhou 510640, Guangdong, Peoples R China

2.Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Guangdong, Peoples R China

3.Hunan Acad Agr Sci, Plant Protect Res Inst, Changsha 410125, Hunan, Peoples R China

4.Yangtze Univ, Coll Agr, Jinzhou 434025, Hubei, Peoples R China

关键词： Begomovirus;Hedyotis uncinella Hook. et Arn.;New species;Wild plant

期刊名称：VIRUS GENES （影响因子：2.332；五年影响因子：2.0 ）

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收录情况： SCI

摘要： A begomovirus isolate VN1 associated with symptomatic Hedyotis uncinella Hook. et Arn. from Vietnam was characterized. The virus, which we provisionally name H. uncinella yellow mosaic virus (HUYMV), has a monopartite genome of 2,749 nucleotides (nts). Pairwise comparisons of DNA-A sequences showed that HUYMV had a maximum nt sequence identity with Soybean crinkle leaf virus (SbLCV) and Premna leaf curl virus (PLCuV) at 82.1 and 81.9%, respectively, which are less than the 89% identity in the complete genome, which has been used as the threshold value for demarcation of species in the genus Begomovirus, the family Geminiviridae. One recombination event was detected for HUYMV, which involves an unknown begomovirus as the major parent and Tomato leaf curl Philippines virus (ToLCPV) as the minor parent, with nt 2163 and nt 2452 as the beginning and ending breakpoints, respectively. A betasatellite was found to be associated with HUYMV. The betasatellite showed the highest nt sequence identity (70%) with Tomato leaf curl Philippine betasatellite - [Philippines:Laguna2:2006]. The name H. uncinella yellow mosaic betasatellite [Vietnam: Binh Dinh: 2013] was proposed for the betasatellite.

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Isolation and molecular characterization of a distinct begomovirus and its associated betasatellite infecting Hedyotis uncinella (Hook. et Arn.) in Vietnam

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