Molecular characterization of two dsRNAs that could correspond to the genome of a new mycovirus that infects the entomopathogenic fungus Beauveria bassiana
文献类型： 外文期刊
作者： Shi, Najie 1 ; Hu, Fei 2 ; Wang, Ping 1 ; Zhang, Yuxiang 1 ; Zhu, Qiuyan 1 ; Yang, Guogen 3 ; Huang, Bo 1 ;
作者机构： 1.Anhui Agr Univ, Anhui Prov Key Lab Microbial Pest Control, Hefei 230036, Peoples R China
2.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230031, Peoples R China
3.Anhui Agr Univ, Sch Plant Protect, Hefei 230036, Peoples R China
期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.574； 五年影响因子：2.466 ）
ISSN： 0304-8608
年卷期： 2021 年 166 卷 11 期
页码：
收录情况： SCI
摘要： The entomopathogenic fungus Beauveria bassiana is used worldwide for biological control of insects. Seven dsRNA segments were detected in a single B. bassiana strain, RCEF1446. High-throughput sequencing indicated the presence of three mycoviruses in RCEF1446. Two were identified as the known mycoviruses Beauveria bassiana victorivirus 1 and Beauveria bassiana polymycovirus 1, and the novel mycovirus was designated as "Beauveria bassiana bipartite mycovirus 1" (BbBV1). The complete sequence of the BbBV1 is described here. The mycovirus contains two dsRNA segments. The RNA 1 (dsRNA 4) of BbBV1 is 2,026 bp in length, encoding a RNA-dependent RNA polymerase (RdRp) (68.54 kDa), while the RNA 2 (dsRNA 6) is 1,810 bp in length, encoding a hypothetical protein (35.55 kDa) with unknown function. Moreover, the amino acid sequence of RdRp showed the highest sequence identity of 62.31% to Botryosphaeria dothidea bipartite mycovirus 1. Phylogenetic analysis based on RdRp sequences revealed that BbBV1 represents a distinct lineage of unassigned dsRNA mycoviruses infecting fungi.
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