Quadriviridae on:
[Wikipedia]
[Google]
[Amazon]
''Quadriviridae'' is a family of double-stranded RNA viruses with a single genus ''Quadrivirus''. The
Mycoviruses in the family ''Quadriviridae'' have a non-enveloped isometric capsid which consists of 60 copies of heterodimers of the structural proteins P2 and P4. The diameter of the capsid is around 48 nm.
Family member genomes are composed of double-stranded RNA. They are divided in to four segments which each code for a protein. The length of the different segments are between 3.5 and 5.0 kbp. The total genome is around 16.8 kbp. Inside the capsid with the genome there is also the RNA-dependent RNA polymerase.
The family ''Quadrivirdae'' has one genus ''Quadrivirus'', which contains the following species:
* '' Quadrivirus ichi'' (Rosellinia necatrix quadrivirus 1)
* '' Quadrivirus ni''
* '' Quadrivirus sani''
ICTV Report: ''Quadriviridae''
{{Taxonbar, from=Q18811737 Virus families Riboviria
fungi
A fungus (: fungi , , , or ; or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and mold (fungus), molds, as well as the more familiar mushrooms. These organisms are classified as one ...
'' Rosellinia necatrix'' serves as a natural host. The name of the group derives from the ''quadri''partite genome of its members where in Latin
Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...
''quad'' means four. The genus has three species.
Structure
Mycoviruses in the family ''Quadriviridae'' have a non-enveloped isometric capsid which consists of 60 copies of heterodimers of the structural proteins P2 and P4. The diameter of the capsid is around 48 nm.
Genome
Family member genomes are composed of double-stranded RNA. They are divided in to four segments which each code for a protein. The length of the different segments are between 3.5 and 5.0 kbp. The total genome is around 16.8 kbp. Inside the capsid with the genome there is also the RNA-dependent RNA polymerase.
Life cycle
Quadriviruses are transmitted internally. They are propagated during cell division and hyphal anastomosis. Viral replication occurs in thecytoplasm
The cytoplasm describes all the material within a eukaryotic or prokaryotic cell, enclosed by the cell membrane, including the organelles and excluding the nucleus in eukaryotic cells. The material inside the nucleus of a eukaryotic cell a ...
. It follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The fungi '' Rosellinia necatrix'' serves as a natural host.
Taxonomy
The family ''Quadrivirdae'' has one genus ''Quadrivirus'', which contains the following species:
* '' Quadrivirus ichi'' (Rosellinia necatrix quadrivirus 1)
* '' Quadrivirus ni''
* '' Quadrivirus sani''
References
External links
ICTV Report: ''Quadriviridae''
{{Taxonbar, from=Q18811737 Virus families Riboviria