PMID- 23998927 OWN - NLM STAT- MEDLINE DCOM- 20140729 LR - 20131122 IS - 1532-2661 (Electronic) IS - 0034-5288 (Linking) VI - 95 IP - 3 DP - 2013 Dec TI - Molecular evolution of porcine reproductive and respiratory syndrome virus isolates from central China. PG - 908-12 LID - S0034-5288(13)00279-8 [pii] LID - 10.1016/j.rvsc.2013.07.029 [doi] AB - To investigate the genetic diversity of prevailing porcine reproductive and respiratory syndrome virus (PRRSV) in Henan Province of China, 61 ORF5 gene sequences, originating from Henan Province during 2003-2010, were subjected to amino acid variation and phylogenetic analysis. The analyzed PRRSV ORF5 sequences carried evidence of one unique recombination event. Phylogenetic analysis revealed that all Henan isolates belonged to type 2 genotype and were divided into two subgroups. The dominant isolates had shifted from subgroup 1 to subgroup 2 during 2003-2010. Amino acid variation analysis of the glycoprotein 5 revealed that Henan PRRSV strains tended to accumulate more substitutions within the N-terminus and hypervariable region. Selective pressure analysis revealed evidence that some ORF5 sites have likely evolved in response to immune pressure. CI - Copyright (c) 2013 Elsevier Ltd. All rights reserved. FAU - Mu, Chunlong AU - Mu C AD - College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou 450002, China; College of Animal Science and Technology, Nanjing Agricultural University, Nanjing 210095, China. FAU - Lu, Xiaoyan AU - Lu X FAU - Duan, Erzhen AU - Duan E FAU - Chen, Jing AU - Chen J FAU - Li, Weijuan AU - Li W FAU - Zhang, Fenghua AU - Zhang F FAU - Martin, Darren P AU - Martin DP FAU - Yang, Mingfan AU - Yang M FAU - Xia, Pingan AU - Xia P FAU - Cui, Baoan AU - Cui B LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130806 PL - England TA - Res Vet Sci JT - Research in veterinary science JID - 0401300 RN - 0 (Viral Envelope Proteins) RN - 0 (glycoprotein 5, PRRSV) SB - IM MH - Amino Acid Sequence MH - Animals MH - Base Sequence MH - China/epidemiology MH - Evolution, Molecular MH - Molecular Sequence Data MH - Phylogeny MH - Porcine Reproductive and Respiratory Syndrome/epidemiology/*virology MH - Porcine respiratory and reproductive syndrome virus/*genetics MH - Sequence Alignment/veterinary MH - Swine MH - Viral Envelope Proteins/genetics OTO - NOTNLM OT - Genetic variation OT - ORF5 OT - PRRSV OT - Phylogenetic analysis EDAT- 2013/09/04 06:00 MHDA- 2014/07/30 06:00 CRDT- 2013/09/04 06:00 PHST- 2012/07/05 00:00 [received] PHST- 2013/07/19 00:00 [revised] PHST- 2013/07/28 00:00 [accepted] PHST- 2013/09/04 06:00 [entrez] PHST- 2013/09/04 06:00 [pubmed] PHST- 2014/07/30 06:00 [medline] AID - S0034-5288(13)00279-8 [pii] AID - 10.1016/j.rvsc.2013.07.029 [doi] PST - ppublish SO - Res Vet Sci. 2013 Dec;95(3):908-12. doi: 10.1016/j.rvsc.2013.07.029. Epub 2013 Aug 6.