ABSTRACT
All 10 genome segments (Seg-1 to 10-a total of 19,188 bp) were sequenced from a strain of bluetongue virus serotype 3 (BTV-3) from India (strain IND2003/08). Sequence comparisons showed that nine of the genome segments from this virus group with other eastern topotype strains. Genome Seg-2 and Seg-6 group with eastern BTV-3 strains from Japan. However, Seg-5 (the NS1 gene) from IND2003/08 belongs to a western lineage, demonstrating that IND2003/08 is a reassortant between eastern and western topotype bluetongue viruses. This confirms that western BTV strains have been imported and are circulating within the subcontinent.
Subject(s)
Bluetongue virus/genetics , Genome, Viral , RNA, Viral/genetics , Reassortant Viruses/genetics , Sequence Analysis, DNA , Animals , Bluetongue virus/isolation & purification , India , Molecular Sequence Data , Phylogeny , Reassortant Viruses/isolation & purification , Sequence HomologyABSTRACT
Bluetongue virus is the type species of the genus Orbivirus in the family Reoviridae. We report the first complete genome sequence of an isolate (IND2004/01) of bluetongue virus serotype 10 (BTV-10) from Andhra Pradesh, India. This isolate, which is stored in the Orbivirus Reference Collection (ORC) at IAH Pirbright, shows >99% nucleotide identity in all 10 genome segments with a vaccine strain of BTV-10 from the United States.
