Prymnesiovirus is a genus of viruses, in the family Phycodnaviridae. Alga serve as natural hosts. There is only one species in this genus: Chrysochromulina brevifilum virus PW1 (CbV-PW1, Prymnesiovirus brevifilum). It infects Haptolina brevifila, basionym: Chrysochromulina brevifilum (Edvardsen et al., 2011).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.
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.
Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentationPrymnesiovirusIcosahedralT=169EnvelopedLinearMonopartite
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.
Genus Host details Tissue tropism Entry details Release details Replication site Assembly site TransmissionPrymnesiovirusAlgaNoneCell receptor endocytosisLysisNucleusCytoplasmPassive diffusion
References
External links Viralzone: Prymnesiovirus ICTV