ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (11): 2050-2055.doi: 10.11843/j.issn.0366-6964.2015.11.018

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Identification and Sequence Analysis of Endogenous Avian Leukosis Virus Element in Genome of Hy-Line Brown Layers

CHEN Zi-meng1,2# ,DONG Xuan1# ,SU Shuai1,CUI Ning1,LI Zhuo2* ,CUI Zhi-zhong1*   

  1. (1.College of Veterinary Medicine,Shandong Agricultural University,Tai’an 271018,China;2.Third Institute of Oceanography,State Oceanic Administration,Xiamen 361005,China)
  • Received:2015-03-27 Online:2015-11-23 Published:2015-11-23

Abstract:

To study the integration site of endogenous avian leukosis virus(ALV) elements in the genome of Hy-Line Variety Brown,a non-joined PCR amplicon(named HL-E1) was obtained using a B family DNA polymerase from hypothermophilic archaea Thermococcus sp.4557(TXW-PolB).HL-E1 contains three essential genes including gagpol,and env and the 3’-LTRs.And it lacks 93,1 960 and 805 base pairs in the gagpol and env genes,respectively.A 4 663 bp functional mutant of ALV integrated in the Hy-Line Variety Brown genome.The conserved env(highly similar with endogenous avian leucosis virus) and LTR genes have identities of 96.8% and 97.4% to ev1 site.This indicates a newly identified endogenous ALV sequence integrated in an unknown site in the chicken genome.

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