›› 2017, Vol. 44 ›› Issue (9): 2755-2760.doi: 10.16431/j.cnki.1671-7236.2017.09.030

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Isolation and Identification, F Gene Cloning and Evolutionary Analysis of Newcastle Disease Virus Isolated from Wild Birds in Xinjiang

ZHANG Hui-min1, Muhamaitijiang·T1, SHI Jun2, WU Gui-ling1, Gulizhati·Adili2, JIA Er-ken1, SU Zhan-qiang1, RAN Duo-liang1, Shayilan·Kayizha2, LAN Ling3, YAO Gang1, LIU Jian-hua1   

  1. 1. Laboratory of Animal Infectious Disease, College of Veterinary Medicine, Xinjiang Agricultural University, Urumqi 830052, China;
    2. The Management Office of the Wildlife Protection of Forestry Bureau of Xinjiang Uygur Automous Region, Urumqi 830000, China;
    3. Institute of Veterinary Medicine, Xinjiang Academy of Animal Science, Urumqi 830011, China;
    4. Animal Health Supervision Institute of Xinjiang, Urumqi 830063, China
  • Received:2017-02-15 Online:2017-09-20 Published:2017-09-22

Abstract:

In order to understand inflection of Newcastle disease virus (NDV) of Xinjiang wild birds, through analysis of molecular characteristics and genetic variation, to prevent the outbreak and spread of Newcastle disease, isolation of the virus was performed in 9 days old specific pathogen free (SPF) chicken embryos, detected the wild birds in Fuhai county which was located in the migration line of East Africa-West Asia by HA, HI test and RT-PCR method. And then 1 strain of NDV from wild birds was isolated, named as NDV/Pintail/CH(XJ)/01/2016. As the result, ORF of F gene from the NDV isolate was 1 662 bp, encoding 553 amino acids. The motif of the cleavage site was 112G-R-Q-G-R-L117, which was consistent with the characteristics of avirulent NDV strains. The phylogenetic analysis showed that NDV/Pintail/CH(XJ)/01/2016 nucleotide sequence homologies of F gene between reference strain Doneck/3/968 and mule Simeonovgrad strain homology were high and reached 99.7%, it belonged to genotype Ⅱ of Class Ⅱ NDV. All of the three viruses had high homology to the vaccine strain La Sota,which were 99.5% to 99.8%. According to this research conclusion we provided evidence that poultry NDV outflowed into the natural environment.

Key words: wild birds; Newcastle disease virus (NDV); F gene; phylogenetic analysis

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