Carlavirus

Carlavirus, formerly known as the 'Carnation latent virus group', is a genus of viruses in the order Tymovirales, in the family Betaflexiviridae. Plants serve as natural hosts. There are currently 52 species in this genus including the type species Carnation latent virus. Diseases associated with this genus include: mosaic and ringspot symptoms. Carlavirus is described in the 9th report of the ICTV (2009). The genus is characterised by having six ORFs (Open Reading Frames) including a TGB (Triple Gene Block). The viruses are transmitted by insects. The genus was first proposed in the first report of the ICTV in 1971, as the 'Carnation latent virus group' but was renamed in 1975 as the 'Carlavirus Group', and as the genus Carlavirus in 1995 (6th report). In 2005 (8th report) it was placed in the Flexiviridae family, having previously been unassigned. The current position in the 9th report (2009) as a genus of the family Betaflexiviridae derives from the subsequent subdivision of Flexiviridae. As of the 2014 release of the ICTV database, there are currently 52 virus species included in this genus. The type species is the Carnation latent virus. Group: ssRNA(+)