| Fabavirus | |
|---|---|
Virus classification | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Pisuviricota |
| Class: | Pisoniviricetes |
| Order: | Picornavirales |
| Family: | Secoviridae |
| Subfamily: | Comovirinae |
| Genus: | Fabavirus |
Fabavirus is a genus ofplant viruses (plant pathogens) in the orderPicornavirales, in the familySecoviridae, in the subfamilyComovirinae. Plants serve as natural hosts. There are 13 species in this genus.[1][2][3]
The genus contains the following species,listed by scientific name and followed by the exemplar virus of the species:[2][4]
Viruses inFabavirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 28-30 nm. Genomes are linear and segmented, bipartite, around 23.4kb in length.[1]
| Genus | Structure | Symmetry | Capsid | Genomic arrangement | Genomic segmentation |
|---|---|---|---|---|---|
| Fabavirus | Icosahedral | Pseudo T=3 | Non-enveloped | Linear | Segmented |
Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement.Plants serve as the natural host. The virus is transmitted via a vector (aphid). Transmission routes are vector and mechanical.[1]
| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
|---|---|---|---|---|---|---|---|
| Fabavirus | Plants | None | Viral movement; mechanical inoculation | Viral movement | Cytoplasm | Cytoplasm | Mechanical inoculation: aphids |
Proposed in 1987, as theFabavirus group, it was originally unassigned but given genus status in 1993 as a member of theComoviridae, of thePicornavirales in 2008, and reached its current taxonomic status in 2009. There are seven species.[5] The genus is named after the broad bean (Vicia faba).[3]