Molecular Characterization of Tomato Leaf Curl Hainan Virus, a New Begomovirus, and Evidence for Recombination
文献类型： 外文期刊
作者： Zhang, Hui 1 ; Hu, Gaojie 1 ; Zhou, Xueping 1 ;
作者机构： 1.Zhejiang Univ, Inst Biotechnol, Minist Agr, Key Lab Mol Biol Crop Pathogens & Insects, Hangzhou 310029, Zhejiang, Peoples R China
2.Shanghai Acad Agr Sci, Inst Hort Res, Shanghai 201106, Peoples R China
关键词： begomovirus;recombination
期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）
ISSN：
年卷期：
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收录情况： SCI
摘要： AbstractVirus isolates HaNHK7 and HaNHK8 were obtained from tomato plants showing leaf curl symptoms in Hainan Province of China. The complete DNA sequences of both isolates were determined to be 2748 nucleotides, with all the characteristic features of begomovirus genome organization. The two isolates share 99.8% identity with each other but have <88.3% nucleotide sequence identity with other begomoviruses. Consequently, HaNHK7 and HaNHK8 are considered to be isolates of a novel Begomovirus species, for which the name Tomato leaf curl Hainan virus (ToLCHnV) is proposed. ToLCHnV is most closely related to Papaya leaf curl China virus (PaLCuCNV, AJ558117) (88.3% in total nucleotide sequences). However, the AC2 gene more resembles that of Ageratum leaf curl virus (ALCuV, AJ851005) and AC1 and AC4 genes resemble those of Tomato leaf curl Vietnam virus (ToLCVV, AF264063). Sequence analyses suggest that ToLCHnV may have arisen by recombination between viruses related to PaLCuCNV, ALCuV and ToLCVV. Neither the DNA-B component nor the DNA-b molecule was found to be associated with ToLCHnV isolates.
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