Varicosavirus

Varicosavirus
Virus classification
Group: Group V ((−)ssRNA)
Order: Mononegavirales
Family: Rhabdoviridae
Genus: Varicosavirus
Species: Lettuce big-vein associated varicosavirus

The genus Varicosavirus is a group of related plant viruses associated with the 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.

Genome

The genome of the only member of the only species of this genus (lettuce big-vein associated virus (LBVaV)) 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]

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.

Literature

  1. ↑ 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.
  2. ↑ 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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