Prymnesiovirus
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]
Prymnesiovirus | |
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Virus classification ![]() | |
(unranked): | Virus |
Realm: | Varidnaviria |
Kingdom: | Bamfordvirae |
Phylum: | Nucleocytoviricota |
Class: | Megaviricetes |
Order: | Algavirales |
Family: | Phycodnaviridae |
Genus: | Prymnesiovirus |
Type species | |
Chrysochromulina brevifilum virus PW1 |
Taxonomy
Group: dsDNA
- Family: Phycodnaviridae
- Genus: Prymnesiovirus
- Chrysochromulina brevifilum virus PW1
Structure
![](../I/Phycodnaviridae_virion.jpg.webp)
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 |
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.