Complete genome sequence of a putative new idaeovirus identified in Cynanchum rostellatum in China

IF 2.5 4区医学 Q3 VIROLOGY

Archives of Virology Pub Date : 2025-09-27 DOI:10.1007/s00705-025-06418-y

Xue Bai, Caixia Yang, Jing Wang, Song Zhang, Mengji Cao

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Abstract

A new bipartite idaeovirus tentatively named "Cynanchum rostellatum idaeovirus 1" (CRIV-1) was identified inCynanchum rostellatum exhibiting yellow spots and yellow mosaic symptoms in China. CRIV-1 RNA-1 is 5,418 nucleotides (nt) in length and encodes a polyprotein containing methyltransferase (MTR), helicase (Hel), and RNA-dependent RNA polymerase (RdRp) domains. RNA-2 is 2,224 nt in length and encodes a putative movement protein (MP) and a coat protein (CP). CRIV-1 was found to share the highest nt/amino acid (aa) sequence identity with raspberry bushy dwarf virus (AB948214) in the polyprotein (61.2%/61.8%), with black mulberry idaeovirus (MW017549) in the CP (57.3%/47.4%), and with Actinidia yellowing virus 3 (OL581736) in the MP (59.4%/57.6%). Phylogenetic analysis based on polyprotein aa sequences showed a close relationship of CRIV-1 to other idaeoviruses. CRIV-1 can be transmitted to C. rostellatum andNicotiana benthamiana plants via mechanical inoculation. Collectively, our data support the classification of CRIV-1 as a new member of the genus Idaeovirus.

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中国一株疑似新冠病毒的全基因组序列分析

摘要在中国发现了一种新的具有黄斑和黄花叶症状的新病毒，暂定为CRIV-1 （Cynanchum rostellatum idea - virus 1）。CRIV-1 RNA-1全长5418个核苷酸（nt），编码含有甲基转移酶（MTR）、解旋酶（Hel）和RNA依赖性RNA聚合酶（RdRp）结构域的多蛋白。RNA-2全长2224 nt，编码一种假定的运动蛋白（MP）和一种外壳蛋白（CP）。结果表明，CRIV-1在多蛋白序列上与树莓丛矮病毒（AB948214）同源性最高（61.2%/61.8%），与黑桑树病毒（MW017549）同源性最高（57.3%/47.4%），与猕猴桃黄化病毒3 （OL581736）同源性最高（59.4%/57.6%）。基于多蛋白aa序列的系统发育分析表明，CRIV-1与其他理想病毒有密切的亲缘关系。CRIV-1可以通过机械接种的方式传播到牛头藤和烟叶上。总的来说，我们的数据支持将CRIV-1分类为理想病毒属的新成员。

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来源期刊

Archives of Virology 医学-病毒学

CiteScore

5.10

自引率

7.40%

发文量

324

审稿时长

4.5 months

期刊介绍： Archives of Virology publishes original contributions from all branches of research on viruses, virus-like agents, and virus infections of humans, animals, plants, insects, and bacteria. Coverage spans a broad spectrum of topics, from descriptions of newly discovered viruses, to studies of virus structure, composition, and genetics, to studies of virus interactions with host cells, organisms and populations. Studies employ molecular biologic, molecular genetics, and current immunologic and epidemiologic approaches. Contents include studies on the molecular pathogenesis, pathophysiology, and genetics of virus infections in individual hosts, and studies on the molecular epidemiology of virus infections in populations. Also included are studies involving applied research such as diagnostic technology development, monoclonal antibody panel development, vaccine development, and antiviral drug development.Archives of Virology wishes to publish obituaries of recently deceased well-known virologists and leading figures in virology.