Varicosavirus
Varicosavirus is a genus of plant viruses that currently consists of one recognised species: Lettuce big-vein associated varicosavirus. The virus is associated with swelling in plant vein tissues. They are negative single stranded RNA[1] viruses. Infection occurs through soil by the spores of the fungus Olpidium brassicae.
| Varicosavirus | |
|---|---|
Virus classification  | |
| (unranked): | Virus |
| Realm: | Riboviria |
| Kingdom: | Orthornavirae |
| Phylum: | Negarnaviricota |
| Class: | Monjiviricetes |
| Order: | Mononegavirales |
| Family: | Rhabdoviridae |
| Genus: | Varicosavirus |
| Type species | |
| Lettuce big-vein associated varicosavirus | |
Structure
Virions consist of a non-enveloped rod-shaped capsid, having a helical symmetry of 120–360 nm in length, and a width of 18–30 nm.
Genome
The genome consists of a bi-segmented linear, single-stranded negative sense RNA. The first segment is about 6350–7000 nucleotides in length; the second, about 5630–6500 nucleotides in length.[2]
References
- Kormelink R, Garcia ML, Goodin M, Sasaya T, Haenni AL (2011). "Negative-strand RNA viruses: the plant-infecting counterparts". Virus Res. 162 (1–2): 184–202. doi:10.1016/j.virusres.2011.09.028. PMID 21963660.
- Sasaya T, Ishikawa K, Koganezawa H (2002). "The nucleotide sequence of RNA1 of Lettuce big-vein virus, genus Varicosavirus, reveals its relation to nonsegmented negative-strand RNA viruses". Virology. 297 (2): 289–97. doi:10.1006/viro.2002.1420. PMID 12083827.
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