Sequence and phylogenetic analysis of hemagglutinin genes of H9N2 influenza viruses isolated from chicken in China from 2013 to 2015
文献类型: 外文期刊
第一作者: Su Xiao-na
作者: Su Xiao-na;Xie Qing-mei;Chen Wei-guo;Bi Ying-zuo;Chen Feng;Su Xiao-na;Xie Qing-mei;Chen Feng;Su Xiao-na;Xie Qing-mei;Chen Feng;Liao Chang-tao;Yan Zhuan-qiang
作者机构:
关键词: avian influenza virus;H9N2 subtype;phylogenetic analysis;hemagglutinin gene
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2016 年 15 卷 11 期
页码:
收录情况: SCI
摘要: H9N2 avian influenza virus (AIV) infection is a major problem in poultry industry worldwide. In this study, molecular characterizations and phylogenetic relationships of hemagglutinin (HA) gene sequences of H9N2 AIV of 5 Chinese isolates in 2014 recently available in GenBank, 3 widely used vaccine strains, and 52 novel isolates in China from 2013 to 2015 were analyzed. The homology analysis showed that the nucleotide sequences of HA gene of these recent Chinese H9N2 AIV isolates shared homologies from 94.1 to 99.9%. Phylogenetic analysis showed that all isolates belonged to AIV lineage h9.4.2.5. Fifty-six out of the 57 recent Chinese H9N2 AIV isolates had the motifs PSRSSR down arrow GLF at the cleavage sites within the HA protein, while one isolate PWH01 harbored LSRSSR down arrow GLF. Remarkably, all of the recent Chinese H9N2 AIV strains had the Q216L substitution in the receptor binding site, which indicated that they had potential to infect humans. Most of recent Chinese H9N2 AIV isolates lost the potential N-linked glycosylation site at residues 200-202 compared with vaccine strains. This present study demonstrated that AIV lineage h9.4.2.5 was more predominant in China than other lineages as it harbored all the H9N2 AIV isolated between 2013 and 2015. Also we showed the importance of continuous surveillance of emerging H9N2 AIV in China and update of vaccine formulation accordingly in order to prevent and control H9N2 AIV.
分类号:
- 相关文献
作者其他论文 更多>>
-
Inheritance and molecular characterization of resistance to AHAS-inhibiting herbicides in rapeseed
作者:Hu Mao-long;Pu Hui-ming;Gao Jian-qin;Long Wei-hua;Chen Feng;Zhou Xiao-ying;Zhang Wei;Peng Qi;Chen Song;Zhang Jie-fu
关键词:rapeseed;acetohydroxyacid synthase (AHAS);sulfonylurea;imidazolinone;herbicide resistance;mutation
-
Genetic Relationships Among Chinese Maize OPVs Based on SSR Markers
作者:Song Li-ya;Liu Xue;Chen Wei-guo;Hao Zhuan-fang;Bai Li;Zhang De-gui
关键词:Bulk-SSR;genetic diversity;maize;OPVs