Characterization of two novel mitoviruses co infecting a single strain of Fusarium pseudograminearum causing wheat crown rot

IF 2.5 4区医学 Q3 VIROLOGY Archives of Virology Pub Date : 2025-03-19 DOI:10.1007/s00705-025-06242-4

Xin Pan, Yuan Xie, Shuwei Yan, Xiaoting Zhang, Xinxin Liu, Youzhou Jiao, Fei Gao

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Abstract

Wheat crown rot (WCR), caused by Fusarium pseudograminearum, poses a threat to wheat production worldwide. Two mycoviruses, designated as "Fusarium pseudograminearum mitovirus 2" (FupgMV2) and "Fusarium pseudograminearum mitovirus 3" (FupgMV3), were identified in F. pseudograminearum strain YY514-10-2. The two viral genomes are 2,429 and 2,450 nucleotides long, each containing a single open reading frame (ORF) encoding a 724-amino-acid-long RNA-dependent RNA polymerase (RdRp), with 31.98% amino acid sequence identity to each other. BLASTp analysis revealed that the RdRp of FupgMV2 exhibits at least 88.84% amino acid sequence identity to that of Fusarium mitovirus 1, while the RdRp of FupgMV3 shows 80.19% amino acid sequence identity to that of Fusarium mitovirus 2. Phylogenetic analysis indicated that FupgMV2 and FupgMV3 both belong to the genus Unuamitovirus of the family Mitoviridae. This is the first report of two mitoviruses hosted by the same strain of the plant-pathogenic fungus F. pseudograminearum.

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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.