Genomic structure of grass carp Mx2 and the association of its polymorphisms with susceptibility/resistance to grass carp reovirus

► Identified Mx2 genomic structure with 12 exons and 11 introns in grass carp. ► Detected five polymorphisms in grass carp Mx2 genomic sequence. ► Discovered two potential genetic markers for selective breeding of resistant grass carp to grass carp reovirus.