Molecular Characterization of the First Partitivirus from a Causal Agent of Salvia miltiorrhiza Dry Rot

文献类型： 外文期刊

第一作者： Song, Luyang

作者： Song, Luyang;Zhong, Rongrong;Guan, Zhengzhe;Wang, Ganlin;Wen, Caiyi;Zhao, Ying;Huang, Lina;Yang, Zhimin;Shao, Ke;Qin, Yanhong;Wang, Fei

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关键词： partitivirus; Fusarium oxysporum; Salvia miltiorrhiza dry rot; hypovirulence

期刊名称：JOURNAL OF FUNGI （ 影响因子：4.7； 五年影响因子：5.2 ）

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年卷期： 2024 年 10 卷 3 期

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收录情况： SCI

摘要： Root rot as a result of Salvia miltiorrhiza is a common root disease caused by Fusarium spp., which has become one of the main diseases affecting the production of S. miltiorrhiza. Currently, several hypovirulence-related mycoviruses have been identified in many phytopathogenic fungi, including Fusarium spp., which show potential as biological controls. In this study, we report a new mycovirus, Fusarium oxysporum partitivirus 1 (FoPV1), isolated from F. oxysporum strain FCR51, which is a causal agent of S. miltiorrhiza dry rot. The FoPV1 genome contains two double-stranded RNA segments (dsRNA1 and dsRNA2). The size of dsRNA1 is 1773 bp, and it encodes a putative RNA-dependent RNA polymerase (RdRp). The dsRNA2 is 1570 bp in length, encoding a putative capsid protein (CP). Multiple sequence alignments and phylogenetic analyses based on the amino acid sequences of the RdRp and the CP proteins indicated that FoPV1 appears to be a new member of the family Partitiviridae that is related to members of the genus Gammapartitivirus. Pathogenicity assay showed that FoPV1 confers hypervirulence to its host, F. oxysporum. This is the first report of a partitivirus infecting F. oxysporum and the first hypovirulence-related mycovirus from the causal agent of S. miltiorrhiza dry rot.

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