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Molecular characterization of a novel partitivirus with four segments isolated from Fusarium solani, the causal agent of citrus root rot

文献类型： 外文期刊

作者： Ma, XiaoFang 1 ; Huang, Rui 2 ; Zhai, LiFeng 2 ; Jiang, YingChun 1 ; Moffett, Peter 3 ; Wang, ZhiJing 1 ; Song, Xin 1 ; Zhang, Yu 1 ; Song, Fang 1 ; He, LiGang 1 ; Ji, ShengMei 4 ; Wu, LiMing 1 ;

作者机构： 1.Hubei Acad Agr Sci, Res Inst Fruit & Tea, Hubei Key Lab Germplasm Innovat & Utilizat Fruit T, Wuhan 430064, Peoples R China

2.Yangtze Normal Univ, Coll Life Sci & Technol, Chongqing 408000, Peoples R China

3.Univ Sherbrooke, Ctr SEVE, Dept Biol, 2500 Blvd Univ, Sherbrooke, PQ J1K 2R1, Canada

4.Hubei Vocat Coll Biotechnol, Coll Hort & Forestry Sci, Wuhan 430070, Peoples R China

关键词： dsRNA virus; four dsRNA segments; Fusarium solani partitivirus 3; Partitiviridae

期刊名称：JOURNAL OF GENERAL VIROLOGY （ 影响因子：4.3； 五年影响因子：3.7 ）

ISSN： 0022-1317

年卷期： 2024 年 105 卷 11 期

页码：

收录情况： SCI

摘要： We report here the identification of a dsRNA virus, obtained from Fusarium solani strain Newher- 7, tentatively named F. solani partitivirus 3 (FsPV3). It consists of four dsRNA segments (dsRNA1-4) with lengths of 1961, 1900, 1830 and 1830 bp, respectively. Sequence analysis showed that dsRNA1 encodes an RNA- dependent RNA polymerase (RdRp), dsRNA2 encodes a capsid protein (CP), dsRNA3 encodes a hypothetical protein of unknown function and dsRNA4 encodes two hypothetical proteins of unknown function. Amino acid sequence comparisons showed that the RdRp of FsPV3 is most similar to that of Hulunbuir Parti tick virus 1. In contrast, the CP of FsPV3, as well as the hypothetical protein encoded by ORF3 of dsRNA3, was most similar to cognate proteins encoded by Colletotrichum- associated partitivirus 2. However, the two hypothetical proteins encoded by dsRNA4 showed no significant similarity to the available sequences in the National Center for Biotechnology Information database and encoded no apparent conserved domains. Phylogenetic analysis of the RdRp and CP showed that FsPV3 clustered together with other species in the genus Alphapartitivirus. Given that proteins encoded by FsPV3 are not sufficiently highly homologous to a single known virus and that it encodes two novel proteins, we suggest that FsPV3 should be regarded as a new member of the genus Alphapartitivirus in the family Partitiviridae. This is the first report of FsPV3 infecting F. solani.

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