Tymovirus

Tymovirus is a genus of viruses in the order Tymovirales, in the family Tymoviridae. Plants serve as natural hosts. There are currently 28 species in this genus including the type species Turnip yellow mosaic virus.[1][2]

Tymovirus
Turnip yellow mosaic virus on cabbage, found in Bělidla, Olomouc, Moravia, Czech Republic
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Alsuviricetes
Order: Tymovirales
Family: Tymoviridae
Genus: Tymovirus
Type species
Turnip yellow mosaic virus

Taxonomy

Group: ssRNA(+)

[2]

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.[1]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
TymovirusIcosahedralT=3Non-envelopedLinearMonopartite

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.[1]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
TymovirusPlantsNoneViral movement; mechanical inoculationViral movementCytoplasmCytoplasmMechanical: beetles; sap
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References
  1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
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