Prymnesiovirus

Prymnesiovirus
Virus classification
(unranked):	Virus
Realm:	Varidnaviria
Kingdom:	Bamfordvirae
Phylum:	Nucleocytoviricota
Class:	Megaviricetes
Order:	Algavirales
Family:	Phycodnaviridae
Genus:	Prymnesiovirus
Type species
	Chrysochromulina brevifilum virus PW1;

Prymnesiovirus is a genus of viruses, in the family Phycodnaviridae. Alga serve as natural hosts. There is currently only one species in this genus: the type species Chrysochromulina brevifilum virus PW1 (CbV-PW1). It infects Haptolina brevifila, basionym: Chrysochromulina brevifilum (Edvardsen et al., 2011).[1][2][3]

Taxonomy

Group: dsDNA

Order: Algavirales

Family: Phycodnaviridae
- Genus: Prymnesiovirus
  Chrysochromulina brevifilum virus PW1

[2]

Structure

Viruses in Prymnesiovirus are enveloped, with icosahedral and round geometries, and T=169 symmetry. The diameter is around 100-170 nm. Genomes are linear, around 120-485kb in length.[1]

Genus	Structure	Symmetry	Capsid	Genomic arrangement	Genomic segmentation
Prymnesiovirus	Icosahedral	T=169	Enveloped	Linear	Monopartite

Life cycle

Viral replication is nucleo-cytoplasmic. Replication follows the DNA strand displacement model. DNA-templated transcription is the method of transcription. The virus exits the host cell by lysis via lytic phospholipids. Alga serve as the natural host. Transmission routes are passive diffusion.[1]

Genus	Host details	Tissue tropism	Entry details	Release details	Replication site	Assembly site	Transmission
Prymnesiovirus	Alga	None	Cell receptor endocytosis	Lysis	Nucleus	Cytoplasm	Passive diffusion

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References

"Viral Zone". ExPASy. Retrieved 15 June 2015.
ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
S.F. Mirza et al: Isolation and characterization of a virus infecting the freshwater algae Chrysochromulina parva, in: Virology Volume 486, December 2015, Pages 105-115, doi:10.1016/j.virol.2015.09.005. See Fig. 4.

External links

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[ViralZone-1] "Viral Zone". ExPASy. Retrieved 15 June 2015.

[ICTV-2] ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.

[3] S.F. Mirza et al: Isolation and characterization of a virus infecting the freshwater algae Chrysochromulina parva, in: Virology Volume 486, December 2015, Pages 105-115, doi:10.1016/j.virol.2015.09.005. See Fig. 4.