Molecular characterization of a novel partitivirus isolated from Fusarium solani, the causal agent of tobacco root rot

IF 2.5 4区医学 Q3 VIROLOGY

Archives of Virology Pub Date : 2026-06-23 DOI:10.1007/s00705-026-06642-0

Xiao Wu, Ying Wang, Rui Guo, Ya Rong Wang, Si Jun Li, Xiang Ping Zhou, Jie Zhong, Yan Song Xiao, Tian Bo Liu

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Abstract

In this study, a novel double-stranded RNA (dsRNA) mycovirus, tentatively designated Fusarium solani partitivirus 4 (FsPV4), was isolated from the Fusarium solani strain GF7, a phytopathogenic fungus responsible for tobacco root rot. The genome of FsPV4 consists of two dsRNA segments, referred to as dsRNA1 (2312 bp in length) and dsRNA2 (2213 bp in length). The dsRNA 1 and dsRNA 2 were predicted to encode an RNA-dependent RNA polymerase (RdRp) and a coat protein (CP), respectively. Sequence analysis revealed that the RdRp of FsPV4 showed significant sequence similarity to the RdRps of partitiviruses, with Aplosporella javeedii partitivirus 1 being the best match (identity: 60.76%). Phylogenetic analysis of the RdRp showed that FsPV4 clustered robustly within the genus Betapartitivirus of the family Partitiviridae. This represents the first report of a betapartitivirus infecting F. solani, providing a potential candidate for the biological control of F. solani-mediated plant diseases.

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烟草根腐病病原菌枯萎病分离的一种新型部分病毒的分子特征。

本研究从烟草根腐病植物病原真菌茄枯病菌GF7中分离到一种新的双链RNA （dsRNA）分枝病毒，暂定名为枯萎病菌4号（Fusarium solani partitivirus 4, FsPV4）。FsPV4的基因组由两个dsRNA片段组成，分别为dsRNA1（长度2312 bp）和dsRNA2（长度2213 bp）。预测dsRNA 1和dsRNA 2分别编码RNA依赖性RNA聚合酶（RdRp）和外壳蛋白（CP）。序列分析显示，FsPV4的RdRp序列与部分病毒的RdRp序列具有显著的相似性，其中javeedii Aplosporella partitivirus 1匹配度最高（同源性为60.76%）。RdRp的系统发育分析表明，FsPV4在分病毒科Betapartitivirus属中具有很强的聚类性。这是首次报道甜菜芽孢杆菌感染甜菜芽孢杆菌的betapartiti病毒，为甜菜芽孢杆菌介导的植物病害的生物防治提供了潜在的候选物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.