ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (6): 989-996.doi: 10.11843/j.issn.0366-6964.2014.06.018

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Phylogenetic Analysis of H6N6 Subtype Avian Influenza Virus from Guangdong

ZHANG Shuo1,LIN Hong-wen2,YUAN Run-yu1,SONG Ya-fen1,CUI Jin1,GONG Lang1,QU Xiao-yun1,HAN Fei1,WU Xiao-wei3,XU Cheng-gang1,LIAO Ming1*,JIAO Pei-rong1*   

  1. (1.National and Regional Joint Engineering Laboratory for Medicament of Zoonoses Prevention and Control,MOA Key Laboratory for Animal Vaccine Development,Key Lab of Zoonoses Control and Prevention of Guangdong,College of Veterinary Medicine,South China Agricultural University,Guangzhou 510642, China; 2.Agriculture and Husbandry Bureau of Zhalute County,Tongliao 029100, China; 3.Guangdong Entry-exit Inspection and Quarantine Bureau,Guangzhou 510623, China)
  • Received:2013-11-08 Online:2014-06-23 Published:2014-06-23

Abstract:

Two H6N6 subtype avian influenza viruses (AIV),A/Duck/Guangdong/C45/2010(H6N6) and A/Duck/Guangdong/C120/2011(H6N6),were isolated from the live-poultry markets of Guangdong during 2010 to 2011.The sequence analysis of the hemagglutinin (HA) gene showed that the isolates were categorized as low pathogenic AIV,with the typical HA cleavage site of P-Q-I-E-T-R-G.The HA gene of the two isolates was closely related to that of A/Duck/Guangxi/GXd-5/2010(H6N1).The NA genes of the two isolates were closely related to that of A/Duck/Fujian/3242/2007(H6N6) and A/Duck/Fujian/6159/2007(H6N6),respectively.The phylogenic analysis indicated that the eight genes of the two isolates belonged to the Eurasian avian lineage.The HA and NP genes of them belonged to ST2853-like lineage and HN573-like lineage,respectively.However,the other genes of them belonged to ST339-like lineage.Those indicated that the two isolates were recombinant viruses resulted from different genotype viruses.Therefore,we should focus on studying the pathogenic evolution and genetic variation of H6N6 subtype AIV to prevent and control the AIV.

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