Prymnesiovirus

<i>Prymnesiovirus</i>

Prymnesiovirus

Genus of viruses

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). It infects Haptolina brevifila, basionym: Chrysochromulina brevifilum (Edvardsen et al., 2011).[1][2][3]

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Structure

Schematic drawing of a typical Phycodnaviridae virion (cross section and side view)

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]

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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]

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References

  1. [1]
    "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. [2]
    "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 22 May 2021.
  3. [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.
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