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Identification and complete genome sequence of a new cheravirus discovered in grapevine

文献类型： 外文期刊

作者： Fan, Xudong 1 ; Hao, Yuxin 1 ; Ren, Fang 1 ; Hu, Guojun 1 ; Zhang, Ying 1 ; Yuan, Qingyun 1 ; Du, Tingting 1 ; Gao, Jie 1 ; Xu, Meilong 2 ; Dong, Yafeng 1 ;

作者机构： 1.Chinese Acad Agr Sci, Res Inst Pomol, Natl Ctr Eliminating Viruses Deciduous Fruit Tree, Xingcheng 125100, Liaoning, Peoples R China

2.Ningxia Acad Agr & Forestry Sci, Ningxia Hort Res Inst, Yinchuan 750002, Peoples R China

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.5； 五年影响因子：2.2 ）

ISSN： 0304-8608

年卷期： 2025 年 170 卷 7 期

页码：

收录情况： SCI

摘要： High-throughput sequencing (HTS) was applied to identify viruses present in grapevine samples collected in Ningxia, China, that exhibited obvious symptoms of viral disease. A putative novel cheravirus was found through the analysis of sequencing data, and its presence was confirmed by RT-PCR in a Cabernet Sauvignon sample with vein yellowing. The complete genome sequence of this virus was determined by Sanger sequencing of overlapping RT-PCR products and the rapid amplification of cDNA ends (RACE) method. The genome of the putative virus comprises two RNA segments 7,395 and 3,645 nucleotides in length, excluding their poly-A tails. The new virus was tentatively named "grapevine cheravirus" (GCheV). The Pro-Pol region of RNA1 and the CP region of RNA2 of GCheV shared the highest amino acid sequence identity, reaching 72.0% and 48.9%, respectively, with the corresponding sequences of Corymbium villosum cheravirus (CvCV). Phylogenetic analysis revealed that GCheV clustered with CvCV in the genus Cheravirus. These results suggest that GCheV is a new member of that genus. To the best of our knowledge, this is the first report of a virus belonging to the genus Cheravirus in grapevines.

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