Journal
POULTRY SCIENCE
Volume 100, Issue 7, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.psj.2021.101137
Keywords
ALV-E; ALV-B; reorganization; gp85
Categories
Funding
- Natural Science Foundation of Heilongjiang Province of China [LH2019C013]
- Programs of the State Forestry Administration of Wildlife Protection and Nature Reserve Management Division [2019076018]
- National Public Welfare Industry Agricultural Research Project [201203055]
- Modern Agroindustry Technology Research System in China [CARS42-G07]
- National key research and development program [2018YFD0502201-11]
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Research indicated that the DL00766 strain may be an AVL subgroup E isolate with a subgroup B-like gp85 region. This is the first discovery of the E subgroup being used as a recombinant subject, while the subgroup B provides a recombinant virus with an exogenous gene.
The avian leukosis virus (ALV) strain DL00766 was isolated from a farm in China. The phylogenetic analysis showed that env had the highest homology with the E subgroup reference strain, ranging from 94.5% to 94.9%, whereas gp85 had the highest homology with the B and E subgroups, which were 89.0% to 91.3% and 91.3% to 91.8%. In addition, point mutation analysis of gp85 showed that a 400 bp long fragment in gp85 of DL00766 had the highest homology with subgroup B, ranging from 90.1% to 97.5%, and only 82.7% to 83.1% with E subgroup. These results indicate, DL00766 may be an AVL subgroup E isolate with a subgroup B-like gp85 region. This is also the first finding that the E subgroup is used as a recombinant subject, and the subgroup B provides a recombinant virus of an exogenous gene.
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