PMID- 33385245 OWN - NLM STAT- MEDLINE DCOM- 20210204 LR - 20210204 IS - 1432-8798 (Electronic) IS - 0304-8608 (Linking) VI - 166 IP - 2 DP - 2021 Feb TI - Genomic characteristics and pathogenicity of a new recombinant strain of porcine reproductive and respiratory syndrome virus. PG - 389-402 LID - 10.1007/s00705-020-04917-8 [doi] AB - Recombination is an important phenomenon that accelerates evolution and enriches the genetic diversity of porcine reproductive and respiratory syndrome virus (PRRSV). Recombinant PRRSV isolates sometimes have different genetic backgrounds. In this study, we report a recombinant PRRSV (SD-YL1712) isolated from a pig farm. The genome of SD-YL1712 is 15,014 nucleotides in length, and its nucleotide and amino acid sequence conservation is higher than that of PRRSV strain JXA1 except within the NSP2 region. The NSP2 region of SDYL1712 shares the highest nucleotide (85.9%) and amino acid (84.1%) sequence identity with PRRSV strain NADC30. SD-YL1712 was found to contain a characteristic 131-amino-acid deletion in the NSP2 region. Two recombination breakpoints were detected at nt 2134 and nt 3958 within the NSP2 region, which revealed that SD-YL1712 originated from a recombination event between NADC30-like and HP-PRRSV-derived MLV-like strains. Interestingly, SD-YL1712 had an additional deletion at position 586, similar to that found in strain TJnh1501. Moreover, the pathogenicity of strain SD-YL1712 was found to be similar to that of HP-PRRSV JXA1, which was higher than that of the CH1a strain. Further analysis indicated that SD-YL1712 might be a transitional intermediate in the evolution of TJbd1401 to TJnh1501. FAU - Li, Yang AU - Li Y AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Xu, Gaoxiao AU - Xu G AD - Teaching and Research Section of Biotechnology, Nanning University, Nanning, 530200, Guangxi, China. FAU - Du, Xingqian AU - Du X AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Xu, Lele AU - Xu L AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Ma, Zhiqian AU - Ma Z AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Li, Zhiwei AU - Li Z AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Feng, Yingtong AU - Feng Y AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Jiao, Dian AU - Jiao D AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Guo, Wenping AU - Guo W AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. FAU - Xiao, Shuqi AU - Xiao S AUID- ORCID: 0000-0002-6468-2608 AD - College of Veterinary Medicine, Northwest A&F University, No. 22 Xinong Road, Yangling, 712100, Shaanxi, China. xiaoshuqi@nwsuaf.edu.cn. LA - eng GR - 2017YFD0500605/National Key Research and Development Program of China/ GR - 31772764/National Natural Science Foundation of China/ PT - Journal Article DEP - 20210101 PL - Austria TA - Arch Virol JT - Archives of virology JID - 7506870 RN - 0 (Viral Nonstructural Proteins) SB - IM MH - Amino Acid Sequence MH - Animals MH - China MH - Evolution, Molecular MH - Farms MH - Genetic Variation/genetics MH - Genome, Viral/*genetics MH - Genomics MH - Phylogeny MH - Porcine Reproductive and Respiratory Syndrome/*virology MH - Porcine respiratory and reproductive syndrome virus/*genetics MH - Recombination, Genetic/*genetics MH - Sequence Analysis, DNA/methods MH - Swine MH - Viral Nonstructural Proteins/genetics MH - Virulence/genetics EDAT- 2021/01/02 06:00 MHDA- 2021/02/05 06:00 CRDT- 2021/01/01 12:02 PHST- 2020/07/07 00:00 [received] PHST- 2020/10/30 00:00 [accepted] PHST- 2021/01/02 06:00 [pubmed] PHST- 2021/02/05 06:00 [medline] PHST- 2021/01/01 12:02 [entrez] AID - 10.1007/s00705-020-04917-8 [pii] AID - 10.1007/s00705-020-04917-8 [doi] PST - ppublish SO - Arch Virol. 2021 Feb;166(2):389-402. doi: 10.1007/s00705-020-04917-8. Epub 2021 Jan 1.