The complete genome sequence of a novel chrysovirus from the entomopathogenic fungus Beauveria bassiana Vuillemin
文献类型： 外文期刊
作者： Li, Le 1 ; Kang, Qin 1 ; Zhang, Songbai 4 ; Hai, Du 5 ; Lu, Yang 1 ; Sui, Li 1 ; Zhang, Zhengkun 1 ; Li, Qiyun 1 ;
作者机构： 1.Jilin Acad Agr Sci, Jilin Key Lab Agr Microbiol, Key Lab Integrated Pest Management Crops Northeas, Minist Agr, Changchun 130033, Jilin, Peoples R China
2.Jilin Agr Univ, Coll Plant Protect, Changchun 130118, Peoples R China
3.China Agr Univ, Dept Entomol, Coll Plant Protect, Beijing 100193, Peoples R China
4.Yangtze Univ, Hubei Engn Res Ctr Pest Forewarning & Management, Jingzhou 434025, Hubei, Peoples R China
5.Huazhong Agr Univ, State Key Lab Agr Microbiol, Hubei Key Lab Plant Pathol, Wuhan 430070, Hubei, 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 12 期
页码：
收录情况： SCI
摘要： Beauveria bassiana, an entomopathogenic fungus, is used for arthropod pest control worldwide. Here, we report the discovery and characterization of a novel double-stranded RNA (dsRNA) mycovirus, Beauveria bassiana chrysovirus 2 (BbCV-2), isolated from a Chinese B. bassiana strain. The genome sequence of the virus was determined by metagenomic sequencing, RT-PCR, and RACE cloning and was found to consist of four dsRNA segments that are 3441 bp, 2779 bp, 2925 bp, and 2688 bp long, respectively. Each dsRNA segment contains a single ORF. The ORF of dsRNA1 encodes a 1114-amino-acid (aa) protein (123.4 kDa) with a conserved RNA-dependent RNA polymerase (RdRp) motif, the sequence of which showed the highest identity of only 16.13% to that of Beauveria bassiana chrysovirus-1 (BbCV-1). The ORF of dsRNA2 encodes an 805-aa coat protein (CP) (84.7 kDa). The ORFs of dsRNAs 3 and 4 encodes proteins of undetermined function. The virus is a new member of the family Chrysoviridae from B. bassiana.
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