Notes on Family: Quadriviridae
Viruses in this family have spherical particles slightly larger than those of partitiviruses and chrysoviruse and four dsRNA segments (hence the name). Phylogenetic analysis shows that quadriviruses form a separate group of mycoviruses and that the polymerase has a distant relationship with that of viruses in the family Chrysoviridae
Virions are icosahedral and about 48 nm in diameter.
Quadripartite, linear double-stranded RNA, with segments ranging in size from 3.7 to 4.9 kbp and each encoding a single polypeptide. A terminal sequence of seven 5â€™- and fourteen 3â€™-nucleotides is strictly conserved in all segments.
Genera in the Family
There is currently only one genus: