Genome sequencing and phylogenetic analysis of Banna virus(genus Seadornavirus,family Reoviridae)isolated from Culicoides  

作　　者：Song Song Yuanyuan Li Shihong Fu Wenwen Lei Xiaofang Guo Yun Feng Xiaoyan Gao Xiaolong Li Zhonghua Yang Ziqian Xu Ying He Huanyu Wang Hongning Zhou Bin Wang Xiaoqing Lu Guodong Liang 

机构地区：[1]School of Public Health,Qingdao University,Qingdao 266071,China [2]State Key Laboratory of lnfectious Disease Prevention and Control,National Institute for Viral Disease Control and Prevention,Chinese Center for Disease Control and Prevention,Beijing 102206,China [3]Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases,Hangzhou 310058,China [4]yunnan Institute of Parasitic Diseases,Pu'er 665000,China [5]Yunnan Institute of Endemic Disease Control and Prevention,Dali 671000,China

出　　处：《Science China(Life Sciences)》2017年第12期1372-1382,共11页中国科学（生命科学英文版）

基　　金：supported by the National Natural Science Foundation of China(81290342,81501757);the Special National Project on Research and Development of Key Biosafety Technologies(2016YFC1201904);the National Key Plan for Scientific Research and Development of China(2016YFD0500300);the development grants of State Key Laboratory of Infectious Disease Prevention and Control(2014SKLID103,2015SKLID505)

摘　　要：In an investigation of blood-sucking insects and arboviruses, a virus(YN12243) was isolated from Culicoides samples collected in the Sino-Burmese border region of Yunnan Province, China. The virus caused cytopathic effect(CPE) in C6/36 cells and passaged stably. Polyacrylamide gel analysis showed that the genome of YN12243 was composed of 12 segments of double-stranded RNA(dsRNA), with a distribution pattern of 6-6. The nucleotide and amino acid sequences of the coding region(1.12 segments) were17,803 bp and 5,925 amino acids in length, respectively. The phylogenetic analysis of VP1 protein(RdRp) revealed that YN12243 belonged to genus Seadornavirus of family Reoviridae, and further analysis indicated that YN12243 belongs to the Banna virus(BAV) genotype A2. Additionally, YN12243 was located in the same evolutionary cluster as BAV strains isolated from different mosquito species, suggesting that the BAV isolated from Culicoides does not have species barriers. These results indicate that Culicoides can also be a vector for BAV. In view of the hematophagous habits of Culicoides on cattle, horses, deer, and other large animals, as well as the possibility of spreading and causing a variety of animal arboviral diseases, it is important to improve infection detection and monitor the BAV in large livestock.In an investigation of blood-sucking insects and arboviruses, a virus（YN12243） was isolated from Culicoides samples collected in the Sino-Burmese border region of Yunnan Province, China. The virus caused cytopathic effect（CPE） in C6/36 cells and passaged stably. Polyacrylamide gel analysis showed that the genome of YN12243 was composed of 12 segments of double-stranded RNA（dsRNA）, with a distribution pattern of 6-6. The nucleotide and amino acid sequences of the coding region（1.12 segments） were17,803 bp and 5,925 amino acids in length, respectively. The phylogenetic analysis of VP1 protein（RdRp） revealed that YN12243 belonged to genus Seadornavirus of family Reoviridae, and further analysis indicated that YN12243 belongs to the Banna virus（BAV） genotype A2. Additionally, YN12243 was located in the same evolutionary cluster as BAV strains isolated from different mosquito species, suggesting that the BAV isolated from Culicoides does not have species barriers. These results indicate that Culicoides can also be a vector for BAV. In view of the hematophagous habits of Culicoides on cattle, horses, deer, and other large animals, as well as the possibility of spreading and causing a variety of animal arboviral diseases, it is important to improve infection detection and monitor the BAV in large livestock.

关 键 词：Banna virus Seadornavirus Reoviridae MOSQUITO CULICOIDES 

分 类 号：Q939.4[生物学—微生物学]