''Phaeovirus'' is a genus of

viruses A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Viruses are found in almo ...

, in the family ''

Phycodnaviridae ''Phycodnaviridae'' is a family of large (100–560 kb) double-stranded DNA viruses that infect marine or freshwater eukaryotic algae. Viruses within this family have a similar morphology, with an icosahedral capsid (polyhedron with 20 f ...

''. Algae serve as natural hosts. There are three species in this genus.

Taxonomy

The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species: * ''Phaeovirus feldmanniae'', Ectocarpus siliculosus virus 1 * ''Phaeovirus irregularis'', Feldmannia irregularis virus a * ''Phaeovirus unasiliculosus'', Feldmannia species virus

Structure

Viruses in ''Phaeovirus'' are enveloped, with icosahedral and round geometries, and T=169 symmetry. The diameter is around 120-150 nm. Genomes are linear, around 150-350kb in length.

Life cycle

Viral replication is nucleo-cytoplasmic, and is lysogenic. 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.

References

External links

Viralzone: Phaeovirus

ICTV
{{Taxonbar, from=Q18822141 Phycodnaviridae Virus genera