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A novel non-segmented double-stranded RNA virus isolated from the basal fungus Conidiobolus sp.

文献类型： 外文期刊

作者： Yang, Guogen 2 ; Hu, Fei 3 ; Shi, Najie 1 ; Wang, Ping 1 ; 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 Agr Univ, Sch Plant Protect, Key Lab Biol & Sustainable Management Plant Dis &, Hefei 230036, Peoples R China

3.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230031, 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： 2020 年 165 卷 8 期

页码：

收录情况： SCI

摘要： Mycoviruses are widely distributed in a variety of fungal species. However, few viruses have been reported in basal fungi. A novel non-segmented dsRNA virus was isolated from the basal fungus Conidiobolus sp. of the phylum Zoopagomycota, which has been named "Conidiobolus non-segmented RNA virus 1" (CNRV1). The complete genome sequence of CNRV1 was determined by dsRNA extraction, next-generation sequencing, and RACE. The genome of CNRV1 dsRNA is 3,092 bp in length and contains two open reading frames (ORFs) predicted to encode a subgenomic protein 1 (sgP1) and a putative RNA-dependent RNA polymerase (RdRp). Multiple sequence alignment and phylogenetic analysis based on RdRp sequences from selected dsRNA viruses showed that CNRV1 shared 31.9% sequence identity with Nigrospora oryzae unassigned RNA virus 1 (NoNRV1) and clustered with NoNRV1 and four other mycoviruses. These viruses are unassigned and distant from members of the family Partitiviridae, although they were previously considered partitivirus-like viruses. Thus, CNRV1 is a novel member of proposed genus "Unirnavirus", and is the first dsRNA sequence reported from a member of the phylum Zoopagomycota. This study extends our knowledge about mycoviruses in basal fungi.

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