Wang Haoran, Li Cong, Cai Lina, Fang Shouguo, Zheng Limin, Yan Fei, Zhang Songbai, Liu Yong
Hubei Collaborative Innovation Center for Grain Industry, Engineering Research Center of Ecology and Agricultural Use of Wetland, China Ministry of Education, Yangtze University, Jingzhou, 434025, Hubei, China.
Hunan Plant Protection Institute, Changsha, 410125, Hunan, China.
Virus Genes. 2018 Oct;54(5):733-736. doi: 10.1007/s11262-018-1584-x. Epub 2018 Jul 2.
Bipolaris maydis is the causal agent of corn southern leaf blight. Here, we report a novel double-stranded RNA (dsRNA) mycovirus designated Bipolaris maydis botybirnavirus 1 (BmBRV1) from B. maydis strain JZ11 in Jingzhou, Hubei province of China. BmBRV1 has a genome consisting of two dsRNAs (dsRNA1 and dsRNA2) with a size of 6435 and 5987 bp, respectively, each of which contains a single open reading frame (ORF). The two polyproteins encoded by dsRNA1 and dsRNA2 share the highest amino acid identities of 81.8 and 75.3%, respectively, with the RdRp and coat protein of Sclerotinia sclerotiorum botybirnavirus 1 (SsBRV1), a tentative species of the genus Botybirnavirus. Phylogenetic analysis based on the amino acid sequences of RdRp indicated that BmBRV1 belongs to a distinct species of the newly proposed family Botybirnaviridae.
玉米小斑病菌是玉米南方叶枯病的致病因子。在此，我们报道了一种来自中国湖北省荆州市玉米小斑病菌JZ11菌株的新型双链RNA（dsRNA）真菌病毒，命名为玉米小斑病菌双分体病毒1（BmBRV1）。BmBRV1基因组由两条dsRNA（dsRNA1和dsRNA2）组成，大小分别为6435和5987 bp，每条dsRNA都包含一个单一的开放阅读框（ORF）。dsRNA1和dsRNA2编码的两种多聚蛋白分别与核盘菌双分体病毒1（SsBRV1，双分体病毒属的一个暂定种）的RdRp和外壳蛋白具有最高的氨基酸同一性，分别为81.8%和75.3%。基于RdRp氨基酸序列的系统发育分析表明，BmBRV1属于新提出的双分体病毒科的一个独特物种。
