从烟草中分离出的真菌——中国黑孢霉中一种新型威克病毒的特性分析
Characterization of a novel victorivirus from Nigrospora chinensis, a fungus isolated from tobacco.
作者信息
Zhong Jie, Sui Wen Wen, Li Ping, Tang Qian Jun, Liu Tian Bo, Xiao Yan Song
机构信息
Hunan Provincial Key Laboratory for Biology and Control of Plant Diseases and Insect Pests, Hunan Agricultural University, Nongda Road 1, Furong District, Changsha, 410128, Hunan, People's Republic of China.
Tobacco Research Institute of Hunan Province, Changsha, 410004, Hunan, People's Republic of China.
出版信息
Arch Virol. 2022 Dec;167(12):2851-2855. doi: 10.1007/s00705-022-05619-z. Epub 2022 Oct 18.
Here, we characterized a new mycovirus from the fungus Nigrospora chinensis, which was named "Nigrospora chinensis victorivirus 1" (NcVV1). The NcVV1 genome is 5283 bp in length, containing two continuous open reading frames (ORFs), ORF1 and ORF2. ORF1 and ORF2 were predicted to encode a putative coat protein (CP) and an RNA-dependent RNA polymerase (RdRp), respectively. The stop codon of ORF1 overlaps with the start codon of ORF2 by the tetranucleotide sequence AUGA. Phylogenetic analysis based on amino acid sequences of RdRp and CP indicated that NcVV1 clustered with members of the genus Victorivirus in the family Totiviridae. To our knowledge, this was the first report of a mycovirus infecting N. chinensis.
在此，我们对从中国黑孢霉中鉴定出的一种新型真菌病毒进行了表征，该病毒被命名为“中国黑孢霉维克特病毒1”（NcVV1）。NcVV1基因组长度为5283 bp，包含两个连续的开放阅读框（ORF），即ORF1和ORF2。预测ORF1和ORF2分别编码一种假定的衣壳蛋白（CP）和一种RNA依赖的RNA聚合酶（RdRp）。ORF1的终止密码子与ORF2的起始密码子通过四核苷酸序列AUGA重叠。基于RdRp和CP氨基酸序列的系统发育分析表明，NcVV1与Totiviridae科Victorivirus属的成员聚集在一起。据我们所知，这是关于一种感染中国黑孢霉的真菌病毒的首次报道。
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