''Curtovirus'' is a genus of
ssDNA viruses, 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. There are 520 species in this family, assigned to 14 genera. Diseases associated with this family include: bri ...
''.
Dicotyledonous
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, t ...
plants serve as natural hosts. Curtoviruses are transmitted by
leafhopper
A leafhopper is the common name for any species from the family Cicadellidae. These minute insects, colloquially known as hoppers, are plant feeders that suck plant sap from grass, shrubs, or trees. Their hind legs are modified for jumping, and a ...
s. There are three species in this genus. Diseases associated with this genus include:
Curly top
Curly Top is a 1935 American musical romantic comedy film starring Shirley Temple, John Boles and Rochelle Hudson.
Plot
A bachelor wants to adopt an orphan, but she refuses to leave behind her older sister, so he adopts them both. The man even ...
disease.
Structure
Viruses in ''Curtovirus'' are non-enveloped, with icosahedral geometries, and T=1 symmetry. The diameter is around 22 nm, with a length of 38 nm.
Genome
In the fields of molecular biology and genetics, 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 ge ...
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. The virus is transmitted via a vector (
beet leafhopper
The beet leafhopper (''Circulifer tenellus''), also sometimes known as ''Neoaliturus tenellus'', is a species of leafhopper which belongs to the family Cicadellidae in the order Hemiptera.
Morphology
A lot of morphological diversity has be ...
). Transmission routes are vector.
References
External links
Viralzone: CurtovirusICTV
{{Taxonbar, from=Q15974796
Geminiviridae
Virus genera