Evidence of shared genomic segment 6 Between Bluetongue virus serotypes 1 and 2
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Keywords:
Bluetongue virus, Serotype, Australasian topotype, Segment reassortment, Shared segment 6Abstract
Bluetongue virus (BTV) belongs to the genus Orbivirus of family Reoviridae. Twenty seven serotypes of BTV have so far been recognized. The genome of BTV consists of ten double-stranded segmented RNA which can reassort independently during mixed infections. The outer capsid proteins VP2 and VP5, coded by segments 2 and 6, are the major determinants of serotype, and serotype-dependent linkage between these segments has been observed. Natural and in vitro reassortments of segment 2 and 6 of different serotypes of BTV have been reported earlier. Here we report a BTV isolate which is a natural reassortments of segment 2 and 5 of BTV-1 and -2.
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