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. 2017 Oct 26;60(12):1372–1382. doi: 10.1007/s11427-017-9190-6

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

Song Song 1,2,3,#, Yuanyuan Li 2,3,#, Shihong Fu 2,3,#, Wenwen Lei 2,3, Xiaofang Guo 4, Yun Feng 5, Xiaoyan Gao 2,3, Xiaolong Li 2,3, Zhonghua Yang 4, Ziqian Xu 2,3, Ying He 2,3, Huanyu Wang 2,3, Hongning Zhou 4, Bin Wang 1, Xiaoqing Lu 1,✉, Guodong Liang 2,3,✉
PMCID: PMC7089225  PMID: 29143280

Abstract

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) were 17,803 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.

Keywords: Banna virus, Seadornavirus, Reoviridae, mosquito, Culicoides

Acknowledgements

This work was 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) and the development grants of State Key Laboratory of Infectious Disease Prevention and Control (2014 SKLID103, 2015SKLID505).

Footnotes

Contributed equally to this work

Contributor Information

Xiaoqing Lu, Email: Luxq532@126.com.

Guodong Liang, Email: gdliang@hotmail.com.

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