Abstract

cDNAs corresponding to the VP6 gene of the turkey rotavirus strains Ty-1 and Ty-3, abd the chicken rotavirus strain Ch-1, were cloned and sequenced. The nucleotide and deduced amino acid sequence homology in the coding region of the VP6 gene in avian rotaviruses ranged from 78.1 to 93.9% and 86.1 to 98.7%, respectively. Both sequences of VP6 from avian rotaviruses exhibited a low degree of sequence homology (67.8–70.7% and 69.8–74.6%, respectively) compared with mammalian rotaviruses. Phylogenetic tree analysis showed that all avian rotaviruses were included in a single cluster and have separated early on from mammalian rotaviruses during evolution. The chicken rotavirus strain Ch-1 was a distant relative of other avian rotaviruses.

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