| Amalgaviridae | |
|---|---|
Virus classification | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Duplopiviricetes |
| Order: | Durnavirales |
| Family: | Amalgaviridae |
| Genera | |
Amalgaviridae is a family ofdouble-strandedRNA viruses. Member viruses infectplants and aretransmitted vertically viaseeds.[1] The name derives fromamalgam (blend, mix) which refers to amalgaviruses possessing characteristics of bothpartitiviruses andtotiviruses.[1][2] The family contains three genera.[3]
Amalgavirus genomes aremonopartite and about 3.5kilobases in length.[2][4] They have two partially overlappingopen reading frames which encode theRNA-dependent RNA polymerase (RdRp) and a putativecapsid protein.[2][5]
It has been suggested that amalgaviruses have evolved via recombination between viruses with double-stranded and negative-strand RNA genomes.[6] Phylogenetic analysis indicates that the amalgavirus RdRp forms a sister clade to the corresponding RdRp protein of partitiviruses (Partitiviridae) which have segmented (bipartite) dsRNA genomes and infect plants, fungi and protists.[1][2][4][6] By contrast, the putative capsid protein of amalgaviruses is homologous to the nucleocapsid proteins ofnegative-strand RNA viruses of the generaPhlebovirus andTenuivirus.[6]
The family contains the following genera:[3]
