National Biotechnology Centre, Indian Veterinary Research Institute, Izatnagar, Bareilly-243 122, (Uttar Pradesh), INDIA. E-mail: sbarua@scientist.com, raia1@rediffmail.com.
The hexon gene sequence of fowl adenovirus 4 of Indian origin was analysed along with other fowl adenoviruses. The neighbour joining tree of the 12 serotypes of group I FAVs at the N-terminus of hexon gene revealed a close genetic relationship between FAV4 and FAV9 while the complete hexon gene tree revealed that FAV4 was related to FAV10. These facts indicate that FAV4 might have evolved by a recombination of FAV9 and FAV10.
Fowl adenovirus 4, hexon, phylogenetic analysis
