Tymoviridae: Difference between revisions

[[File:Turnip yellow mosaic virus 2.jpg|thumb|''Turnip yellow mosaic virus'' on cabbage]]

'''''Tymoviridae''''' is a family of single-stranded positive sense [[RNA]] [[viruses]] in the order ''[[Tymovirales]]''. Plants serve as natural hosts. There are currently 4142 species in this family, dividedassigned amongto three genera, with two species unassigned to a genus.<ref name= ViralZone>{{cite web|title=Viral Zone| url= http://viralzone.expasy.org/all_by_species/54.html|publisher=ExPASy|access-date=15 June 2015}}</ref><ref name=ICTV>{{cite web| last1=ICTV|title=Virus Taxonomy: 20142020 Release | url= httphttps://ictvonlineictv.orgglobal/virusTaxonomy.asptaxonomy |publisher=International Committee on Taxonomy of Viruses (ICTV) |date=March 2021 |access-date=15 JuneMay 20152021}}</ref>

* ''[[Bombyx mori latent virusMaculavirus]]''

* ''[[Poinsettia mosaic virusMarafivirus]]''

The linear [[genome]] is between of 6-76–7.5 kilobases in length<ref name=ViralZone /> and encodes one large [[open reading frame]]. It is capped at the 5’ terminus. The 3’ terminus may have a [[tRNA]]-like structure or a polyA tract, depending upon the species. The genome is relatively [[cytosine]] rich.{{cn|date=November 2022}}

|''Maculavirus''||Icosahedral||T=3||Non-enveloped||Linear||Monopartite

|''Marafivirus''||Icosahedral||T=3||Non-enveloped||Linear||Monopartite

|''Tymovirus''||Icosahedral||T=3||Non-enveloped||Linear||Monopartite

Viral replication is cytoplasmic, and is 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.<ref name=ViralZone />

|''Maculavirus''||Plants||None||Viral movement; mechanical inoculation||Viral movement||Cytoplasm||Cytoplasm||Mechanical inoculation: pseudococcid mealybugs; Mechanical inoculation: aphids

|''Marafivirus''||Plants||None||Viral movement; mechanical inoculation||Viral movement||Cytoplasm||Cytoplasm||Mechanical inoculation: pseudococcid mealybugs; Mechanical inoculation: aphids

|''Tymovirus''||Plants||None||Viral movement; mechanical inoculation||Viral movement||Cytoplasm||Cytoplasm||Mechanical: beetles; sap