Biology:Phaeovirus

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Short description: Genus of viruses


Phaeovirus
Virus classification e
(unranked): Virus
Realm: Varidnaviria
Kingdom: Bamfordvirae
Phylum: Nucleocytoviricota
Class: Megaviricetes
Order: Algavirales
Family: Phycodnaviridae
Genus: Phaeovirus

Phaeovirus is a genus of viruses, in the family Phycodnaviridae. Alga serve as natural hosts. There are nine species in this genus.[1][2]

Taxonomy

The genus contains the following species:[2]

  • Ectocarpus fasciculatus virus a
  • Ectocarpus siliculosus virus 1
  • Ectocarpus siliculosus virus a
  • Feldmannia irregularis virus a
  • Feldmannia species virus
  • Feldmannia species virus a
  • Hincksia hinckiae virus a
  • Myriotrichia clavaeformis virus a
  • Pilayella littoralis virus 1

Structure

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

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.[1]

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

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.[1]

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

References

  1. 1.0 1.1 1.2 "Viral Zone". ExPASy. http://viralzone.expasy.org/all_by_species/590.html. Retrieved 15 June 2015. 
  2. 2.0 2.1 "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. https://ictv.global/taxonomy. 

External links

Wikidata ☰ Q18822141 entry