Journal of Integrative Agriculture ›› 2024, Vol. 23 ›› Issue (4): 1442-1446.DOI: 10.1016/j.jia.2023.11.041

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  • 收稿日期:2023-06-22 接受日期:2023-10-16 出版日期:2024-04-20 发布日期:2024-03-30

First identification of a novel Aichivirus D in goats with diarrhea

Chen Yang1*, Keha-mo Abi1*, Hua Yue1, 2, Falong Yang1, 2, Cheng Tang1, 2#   

  1. 1 College of Animal & Veterinary Sciences, Southwest Minzu University, Chengdu 610041, China

    2 Key Laboratory of Qinghai–Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Chengdu 610041, China

  • Received:2023-06-22 Accepted:2023-10-16 Online:2024-04-20 Published:2024-03-30
  • About author:#Correspondence Cheng Tang, E-mail: tangcheng101@163.com * These authors contributed equally to this study.
  • Supported by:
    This work was sponsored by the Southwest Minzu University Double World-Class Project, China (XM2023014), the Sichuan Veterinary Medicine and Drug Innovation Group of China Agricultural Research System (SCCXTD-2020-18), the Key Laboratory of Veterinary Medicine of Universities of Sichuan Province of China, and the Fundamental Research Funds for the Central Universities, Southwest Minzu University, China (ZYN2023043).

摘要:

嵴病毒(Kobuvirus, KoV)是微RNA病毒科的一个新的属,包括A型爱知病毒-F型爱知病毒(Aichivirus A-F6个种,目前只在牛和绵羊中检测到Aichivirus D我们在采用宏基因组技术鉴定某爆发腹泻的山羊场的腹泻病原时,意外的在粪便中发现了Aichivirus D序列,本实验的目的是研究山羊源Aichivirus D的分子特征并调查其与山羊腹泻的联系。根据病毒宏基因组学技术获得的Aichivirus D部分序列设计引物成功地从腹泻样本获得了一个近乎全长Aichivirus D基因组(8,461 bp),包含7,524 bp 的完整编码框,与绵羊Aichivirus D的遗传关系最近,可能由绵羊Aichivirus D通过重组进化而来,重组区域位于VP1基因。为进一步调查Aichivirus D与山羊腹泻的联系,从3个爆发腹泻的羊场采集了1162-60日龄的羔羊粪便样本(61份腹泻样本,55份临床健康粪便样本),采用特异性RT-PCR进行了Aichivirus D的检测。结果表明,腹泻样本中Aichivirus D阳性率为55.74% (34/61),显著高于健康样本(14.55%P0.001)且其它常见腹泻病原未检出,提示Aichivirus D与山羊腹泻有关。在此基础上,又从9个阳性样本中扩增出完整的VP0VP3VP1,与绵羊源Aichivirus D相比,山羊源Aichivirus D的VP0VP3VP1有独特的氨基酸突变和遗传进化特征。总之,本实验首次证明Aichivirus D感染山羊且该病毒可能与山羊腹泻有关。该病毒与绵羊Aichivirus D的亲缘关系最为密切可能是由绵羊AichiVirus D 重组进化而来的。这些结果有助于深入了解Aichivirus D的宿主范围和遗传进化。