文献类型： 外文期刊

作者： Jia, Jichun ¹ ; Chen, Xu ¹ ; Wang, Xue ¹ ; Liu, Xu ¹ ; Zhang, Nuo ¹ ; Zhang, Baojun ¹ ; Chang, Yindong ¹ ; Mu, Fan ¹ ;

作者机构： 1.Shanxi Agr Univ, Coll Plant Protect, Shanxi Key Lab Integrated Pest Management Agr, Taigu 030801, Shanxi, Peoples R China

期刊名称：ARCHIVES OF VIROLOGY （ 影响因子：2.7； 五年影响因子：2.4 ）

ISSN： 0304-8608

年卷期： 2023 年 168 卷 8 期

页码：

收录情况： SCI

摘要： In this study, a novel single-stranded RNA virus was isolated from the plant-pathogenic fungus Setosphaeria turcica strain TG2, and the virus was named "Setosphaeria turcica ambiguivirus 2" (StAV2). The complete nucleotide sequence of the StAV2 genome was determined using RT-PCR and RLM-RACE. The StAV2 genome comprises 3,000 nucleotides with a G+C content of 57.77%. StAV2 contains two in-frame open reading frames (ORFs) with the potential to produce an ORF1-ORF2 fusion protein via a stop codon readthrough mechanism. ORF1 encodes a hypothetical protein (HP) of unknown function. The ORF2-encoded protein shows a high degree of sequence similarity to the RNA-dependent RNA polymerases (RdRps) of ambiguiviruses. BLASTp searches showed that the StAV2 HP and RdRp share the highest amino acid sequence identity (46.38% and 69.23%, respectively) with the corresponding proteins of a virus identified as "Riboviria sp." isolated from a soil sample. Multiple sequence alignments and phylogenetic analysis based on the amino acid sequences of the RdRp revealed that StAV2 is a new member of the proposed family "Ambiguiviridae".