Genetic characterization of a new NSP2-deletion porcine reproductive and Respiratory Syndrome Virus in China
文献类型： 外文期刊
第一作者： Xie, Chang-zhan
作者： Xie, Chang-zhan;Ha, Zhuo;Zhang, Ying;Xie, Yu-biao;Zhang, He;Nan, Fu-long;Zhang, Jin-yong;Zhao, Guan-yu;Li, Zhuo-xin;Li, Cheng-hui;Yu, Cheng-dong;Lu, Hui-jun;Jin, Ning-yi;Xie, Chang-zhan;Wang, Zheng;Zhang, Jin-yong;Lu, Hui-jun;Jin, Ning-yi;Wang, Zheng;Lu, Hui-jun;Jin, Ning-yi;Zhang, Ping;Lu, Hui-jun;Jin, Ning-yi
作者机构：
关键词： Porcine reproductive and respiratory syndrome virus (PRRSV); NADC30-Like; Recombination; Antigenicity
期刊名称：MICROBIAL PATHOGENESIS （ 影响因子：3.738； 五年影响因子：3.663 ）
ISSN： 0882-4010
年卷期： 2021 年 150 卷
页码：
收录情况： SCI
摘要： The Porcine Reproductive and Respiratory Syndrome Virus (PRRSV) cause a huge economic loss around the pig industry worldwide; the NADC30-like PRRSV have attracted much attention outbreaks in China in recent years. Recombination between PRRSV subtypes, point mutations, insertions and deletions that contribute to the emergence of new variants in the genome. In this study, the PRRSV-HB-16-China-2019 strain's full-length genomic sequence shares 93.0% nucleotide similarity to NADC30 PRRSV without any gene insertion. Compared with VR-2332, it has an NSP2 coding region that is different from NADC30, which has a discontinuous 206-aa (111-aa from position 323 to 433 and 95-aa from position 476 to 570) deletion. Compared with other NADC30-Like strains, it has a discontinuous 75-amino acid (75-aa from position 476 to 552) deletion, which was first reported. Notably, the strain, PRRSV-HB-16-China-2019, contained an addition a 1-aa deletion in ORF5 and a unique 3-nt deletion in 3'-UTR similar to NADC30, the strain is recombined between a NADC30-like strain and a vaccine strain named RespPRRS MLV(parental strain VR-2332). Our findings indicate that PRRSV-HB-16-China-2019 is a new NSP2-deletion NADC30-like strain with certain deletions and mutations. Our results show that the emergence of the new NADC30-like strain has increased the difficulty of PRRSV prevention in China.
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