Quadriviridae

Quadriviridae is a family of double-stranded RNA viruses with a single genus Quadrivirus.

The name of the group derives from the quadripartite genome of its members where in Latin quad means four.

[2][3] Mycoviruses in the family Quadriviridae have a non-enveloped isometric capsid which consists of 60 copies of heterodimers of the structural proteins P2 and P4.

[2][3] Family member genomes are composed of double-stranded RNA.

Inside the capsid with the genome there is also the RNA-dependent RNA polymerase.

Schematic diagram of Quadriviridae virions. The four genomic segments may be separately encapsulated. [ 3 ]
Genome of Rosellinia necatrix quadrivirus 1
Phylogenetic tree of quadriviruses, chrysoviruses and some totiviruses