一株禾谷镰刀菌内生病毒的分离与鉴定
A novel ormycovirus isolated from the plant-pathogenic fungus Fusarium graminearum.
机构信息
State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agroproducts, Key Laboratory of Biotechnology in Plant Protection of MOA of China, Institute of Plant Virology, Ningbo University, Ningbo, 315211, China.
Hunan Tobacco Research Institute, Changsha, Hunan, 410004, China.
出版信息
Arch Virol. 2024 Sep 18;169(10):202. doi: 10.1007/s00705-024-06131-2.
In this study, we identified a novel mycovirus, Fusarium graminearum ormycovirus 1 (FgOV1), from the pathogenic fungus Fusarium graminearum. The virus has two RNA segments, RNA1 and RNA2, with lengths of 2,591 and 1,801 nucleotides, respectively, excluding the polyA tail. Each segment contains a single open reading frame (ORF). The ORF in RNA1 encodes an RNA-dependent RNA polymerase, while the ORF in RNA2 encodes a hypothetical protein. Phylogenetic analysis showed that FgOV1 belongs to the gammaormycovirus clade, whose members are related to betaormycoviruses. To our knowledge, this is the first report of an ormycovirus in Fusarium graminearum.
在这项研究中，我们从致病性真菌禾谷镰刀菌中鉴定出一种新型的真菌病毒，即禾谷镰刀菌欧文氏菌 1 （FgOV1）。该病毒有两个 RNA 片段，RNA1 和 RNA2，分别长 2591 和 1801 个核苷酸，不包括 polyA 尾。每个片段包含一个单一的开放阅读框（ORF）。RNA1 中的 ORF 编码 RNA 依赖性 RNA 聚合酶，而 RNA2 中的 ORF 编码一个假设蛋白。系统发育分析表明，FgOV1 属于γ欧文氏菌分支，其成员与β欧文氏菌有关。据我们所知，这是禾谷镰刀菌中欧文氏菌的首次报道。
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