Genetic characterization of bovine coronavirus strain isolated in Inner Mongolia of China

文献类型： 外文期刊

第一作者： Zhang, Fan

作者： Zhang, Fan;Chai, Chunxia;Niu, Rui;Diao, Yun;Zhou, Yanyan;Zhang, Jinlong;Wu, Youzhi;Ma, Yanhua;Zan, Xiaohui;Wang, Wei;Zhang, Fan;Feng, Lin;Yao, Chunming

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关键词： Bovine coronavirus; Genetic characterization; Isolated strain; China

期刊名称：BMC VETERINARY RESEARCH （ 影响因子：2.6； 五年影响因子：2.9 ）

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年卷期： 2024 年 20 卷 1 期

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收录情况： SCI

摘要： Background Bovine coronavirus (BCoV) is implicated in severe diarrhea in calves and contributes to the bovine respiratory disease complex; it shares a close relationship with human coronavirus. Similar to other coronaviruses, remarkable variability was found in the genome and biology of the BCoV. In 2022, samples of feces were collected from a cattle farm. A virus was isolated from 7-day-old newborn calves. In this study, we present the genetic characteristics of a new BCoV isolate. The complete genomic, spike protein, and nucleocapsid protein gene sequences of the BCoV strain, along with those of other coronaviruses, were obtained from the GenBank database. Genetic analysis was conducted using MEGA7.0 and the Neighbor-Joining (NJ) method. The reference strains' related genes were retrieved from GenBank for comparison and analysis using DNAMAN.Results The phylogenetic tree and whole genome consistency analysis showed that it belonged to the GIIb subgroup, which is epidemic in Asia and America, and was quite similar to the Chinese strains in the same cluster. Significantly, the S gene was highly consistent with QH1 (MH810151.1) isolated from yak. This suggests that the strain may have originated from interspecies transmission involving mutations of wild strains. The N gene was conserved and showed high sequence identity with the epidemic strains in China and the USA.Conclusions Genetic characterization suggests that the isolated strain could be a new mutant from a wild-type lineage, which is in the same cluster as most Chinese epidemic strains but on a new branch.

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