数字农科院2.0

Evidence For A Novel Negative-Stranded R.na Mycovirus Isolated From T he Plant Pathogenic Fungus Fusarium Graminearum

文献类型： 外文期刊

作者： Chen, Xiaoguang;Guo, Lihua;Wang, Luan;Qiu, Dewen;Wang, Shuangchao;He, Hao;Kondo, Hideki

作者机构：

关键词： Mycovirus; Fungus; Fusarium graminearum; Negative-stranded RNA virus; Mononegavirus; FgNSRV-1; Fusarium head blight; Coevolution

期刊名称： VIROLOGY

ISSN： 0042-6822

年卷期： 2018 年 518 卷

页码：

收录情况： JCR（2021版）

摘要： Here we describe a novel (-)ssRNA mycovirus, Fusarium graminearum negative-stranded RNA virus 1 (FgNSRV-1), isolated from Fusarium graminearum strain HN1. The genome of FgNSRV-1 is 9072 nucleotides in length, with five discontinuous but linear ORFs (ORF I-V). Phylogenetic analysis based on entire L polymerase sequences indicated that FgNSRV-1 is related to the (-)ssRNA mycovirus Sclerotinia sclerotiorum negative-stranded RNA virus 1 (SsNSRV-1), and other mycoviruses. Our data suggest that FgNSRV-1 can be classified into the family Mymonaviridae, order Mononegavirales. Putative enveloped virion-like structures with filamentous morphology similar to SsNSRV-1 were observed in virion preparation samples. The L proteins of FgNSRV-1, and other fungal mononegaviruses, were found to be related to L protein-like sequences in some fungal genome, supporting the hypothesis that there is coevolution occurring between mycoviruses and fungi. Besides, clearing the virus from the infected host fungus resulted in no discernable phenotypic change.

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