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''Tymovirus'' is a genus of
virus A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1 ...
es in the order ''
Tymovirales ''Tymovirales'' is an order of viruses with five families. The group consists of viruses which have positive-sense, single-stranded RNA genomes. Their genetic material is protected by a special coat protein. Description Tymoviruses are mainly ...
'', in the family ''
Tymoviridae ''Tymoviridae'' is a family of single-stranded positive sense RNA viruses in the order ''Tymovirales''. Plants serve as natural hosts. There are 42 species in this family, assigned to three genera, with two species unassigned to a genus. Taxono ...
''. Plants serve as natural hosts. There are 28 species in this genus.


Taxonomy

The genus contains the following species: * '' Anagyris vein yellowing virus'' * ''
Andean potato latent virus ''Andean potato latent virus'' (APLV) is a plant pathogenic virus of the family ''Tymoviridae''. See also * Viral diseases of potato Viral diseases of potato are a group of diseases caused by different types of viruses that affect potato cro ...
'' * '' Andean potato mild mosaic virus'' * '' Belladonna mottle virus'' * '' Cacao yellow mosaic virus'' * '' Calopogonium yellow vein virus'' * '' Chayote mosaic virus'' * '' Chiltepin yellow mosaic virus'' * '' Clitoria yellow vein virus'' * '' Desmodium yellow mottle virus'' * '' Dulcamara mottle virus'' * '' Eggplant mosaic virus'' * '' Erysimum latent virus'' * '' Kennedya yellow mosaic virus'' * '' Melon rugose mosaic virus'' * '' Nemesia ring necrosis virus'' * '' Okra mosaic virus'' * '' Ononis yellow mosaic virus'' * '' Passion fruit yellow mosaic virus'' * '' Peanut yellow mosaic virus'' * '' Petunia vein banding virus'' * '' Physalis mottle virus'' * '' Plantago mottle virus'' * '' Scrophularia mottle virus'' * '' Tomato blistering mosaic tymovirus'' * ''
Turnip yellow mosaic virus ''Turnip yellow mosaic virus'' (TYMV) is an isometric ''Tymovirus'' of the family ''Tymoviridae''. Its host range is confined almost entirely to plants in the genus ''Brassica'' in western Europe, which includes cabbages, cauliflower and broccol ...
'' * '' Voandzeia necrotic mosaic virus'' * '' Wild cucumber mosaic virus''


Structure

Viruses in ''Tymovirus'' are non-enveloped, with icosahedral and isometric geometries, and T=3 symmetry. The diameter is around 30 nm. Genomes are linear, around 6.3kb in length.


Life cycle

Viral replication is cytoplasmic and lysogenic. 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. Translation takes place by leaky scanning. The virus exits the host cell by monopartite non-tubule guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (insects). Transmission routes are vector and mechanical.


References


External links


Viralzone: Tymovirus

ICTV
{{Taxonbar, from=Q3546058 Tymoviridae Virus genera