PMID- 23412837 OWN - NLM STAT- MEDLINE DCOM- 20130829 LR - 20211021 IS - 1867-0342 (Electronic) IS - 1867-0334 (Linking) VI - 4 IP - 3 DP - 2012 Sep TI - Molecular characterization of a complete genome and 12 Nsp2 genes of PRRSV of southwestern China. PG - 102-14 LID - 10.1007/s12560-012-9083-z [doi] AB - One genome and 12 Nsp2 genes of porcine reproductive and respiratory syndrome virus (PRRSV), isolated from southwestern China during 2009-2010, were sequenced and analyzed. The whole genome comparison analysis revealed that SCwhn09CD is a North American-type PRRSV with separate 30aa deletion in Nsp2 gene, and its sequence highly identical to highly pathogenic PRRSV (HP-PRRSV) outbreak in 2006 in almost half area of China. However, an extra 7aa deletion was detected in its Nsp2 coding region. Based on the phylogenetic analysis of Nsp2 gene, all the 12 viruses were grouped into North American-type PRRSV, but two in classical-PRRSV (C-PRRSV) subcluster without typical 30aa deletion and ten in HP-PRRSV subcluster with the signature deletion. In addition, many nucleotide substitutions were found in all 12 Nsp2 genes and extra three novel deletions were identified in three out of ten HP-PRRSV. Combining the above data, it may be concluded that: (1) HP-PRRSV and C-PRRSV co-existed in the local pig farms and the majority of the viruses is HR-PRRSV, and (2) the HR-PRRSV continues to undergo its genomic divergence although it does not outbreak in large-scale in recent years. Therefore, continuous surveillance on PRRSV is necessary for the controlling of the virus in this region. FAU - Zhou, YingShun AU - Zhou Y AD - School of Life Science, Sichuan University, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, 985 Project Science Innovative Platform for Resource and Environment Protection of Southwestern, Key Laboratory of Bio-resources and Eco-environment, Ministry of Education, Chengdu, 610064, Sichuan, China. FAU - Yang, Xin AU - Yang X FAU - Wang, Hong-Ning AU - Wang HN FAU - Zhang, AnYun AU - Zhang A FAU - Zhang, ZhiKun AU - Zhang Z FAU - Kang, RunMing AU - Kang R FAU - Zeng, FanYa AU - Zeng F FAU - Li, HaoCheng AU - Li H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120712 PL - United States TA - Food Environ Virol JT - Food and environmental virology JID - 101483831 RN - 0 (RNA, Viral) SB - IM MH - Amino Acid Sequence MH - Animals MH - China MH - Cloning, Molecular MH - Gene Deletion MH - Genetic Variation MH - *Genome, Viral MH - Molecular Sequence Data MH - Open Reading Frames MH - Phylogeny MH - Porcine respiratory and reproductive syndrome virus/*genetics/*isolation & purification MH - RNA, Viral/genetics/*isolation & purification MH - Sequence Alignment MH - Sequence Analysis, DNA MH - Sus scrofa/virology EDAT- 2013/02/16 06:00 MHDA- 2013/08/30 06:00 CRDT- 2013/02/16 06:00 PHST- 2012/03/10 00:00 [received] PHST- 2012/06/19 00:00 [accepted] PHST- 2013/02/16 06:00 [entrez] PHST- 2013/02/16 06:00 [pubmed] PHST- 2013/08/30 06:00 [medline] AID - 10.1007/s12560-012-9083-z [doi] PST - ppublish SO - Food Environ Virol. 2012 Sep;4(3):102-14. doi: 10.1007/s12560-012-9083-z. Epub 2012 Jul 12.