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ARS Home » Southeast Area » Athens, Georgia » U.S. National Poultry Research Center » Endemic Poultry Viral Diseases Research » Research » Publications at this Location » Publication #289153
Title: NDV HN gene C-terminal extension is not the determinant of the enteric tropism but influences the virus virulence

Author
item ZHAO, WEI - Northwest Agriculture And Forestry University
item Yu, Qingzhong
item Zsak, Laszlo

Submitted to: American Association of Avian Pathologists
Publication Type: Abstract Only
Publication Acceptance Date: 1/18/2013
Publication Date: 7/28/2013
Citation: Zhao, W., Yu, Q., Zsak, L. 2013. NDV HN gene C-terminal extension is not the determinant of the enteric tropism but influences the virus virulence. In: Proceedings of the 2013 annual meeting of the American Association of Avian Pathologists, July 20-23, 2013, Chicago, Illinois. CDROM, p.80.

Interpretive Summary:

Technical Abstract: Many asymptomatic enteric Newcastle disease virus (NDV) strains contain a larger hemagglutinin-neuraminidase (HN) protein (616 amino acids, aa) than that (571 aa) of virulent respirotropic NDV strains. Therefore, it has been suspected that the 45 aa extension at the C-terminus of HN influences the virus virulence and tissue tropism. In the present study, we generated two NDV respirotropic strain-based recombinant viruses with the 45 aa extension at its HN protein C-terminus using reverse genetics technology. The biological analysis of these recombinant viruses has demonstrated that the HN protein C-terminal extension is not the determinant of the NDV enteric tropism, but decreases virus virulence.