''Turncurtovirus'' is a genus of
virus
A virus is a submicroscopic infectious agent that replicates only inside the living Cell (biology), cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are ...
es, in the family ''
Geminiviridae
''Geminiviridae'' is a family of plant viruses that encode their genetic information on a circular genome of single-stranded (ss) DNA. The family contains 15 genera. Diseases associated with this family include: bright yellow mosaic, yellow mosa ...
''.
Dicotyledon
The dicotyledons, also known as dicots (or, more rarely, dicotyls), are one of the two groups into which all the flowering plants (angiosperms) were formerly divided. The name refers to one of the typical characteristics of the group: namely, ...
ous plants serve as natural hosts. There are three species in this genus.
Taxonomy
The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:
* ''Turncurtovirus brassicae'',
Turnip curly top virus
* ''Turncurtovirus rapae'',
Turnip leaf roll virus
* ''Turncurtovirus sesami'',
Sesame curly top virus
Sesame (; ''Sesamum indicum'') is a plant in the genus ''Sesamum'', also called benne. Numerous wild relatives occur in Africa and a smaller number in India. It is widely naturalization (biology) , naturalized in tropical regions around the wor ...
Structure
Viruses in ''Turncurtovirus'' are non-enveloped, with icosahedral geometries, and T=1 symmetry.
Genome
A genome is all the genetic information of an organism. It consists of nucleotide sequences of DNA (or RNA in RNA viruses). The nuclear genome includes protein-coding genes and non-coding genes, other functional regions of the genome such as ...
s are circular and non-segmented, around 3.0kb in length.
[
]
Life cycle
Viral replication is nuclear. Entry into the host cell is achieved by penetration into the host cell. Replication follows the ssDNA rolling circle model. DNA-templated transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Dicotyledonous plants serve as the natural host.[
]
References
External links
Viralzone: Turncurtovirus
ICTV
{{Taxonbar, from=Q18819215
Geminiviridae
Virus genera