Prasinovirus

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by Curt99 (talk | contribs) at 23:30, 2 May 2018. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Prasinovirus
Virus classification
Group:
Group I (dsDNA)
Family:
Phycodnaviridae
Genus:
Prasinovirus
Type Species

Prasinovirus is a genus of large double-stranded DNA viruses, in the family Phycodnaviridae that infect phytoplankton in the Prasinophyceae. There are currently only two species in this genus including the type species Micromonas pusilla virus SP1 [1][2], that infects the cosmopolitan photosynthetic flagellate Micromonas pusilla.[3]

Negative stained image of MpV-SP1

However, there is a large group of genetically diverse but related viruses that show considerable evidence of lateral gene transfer.[4] [5]

Venn diagram of shared coding sequences (CDS) of four MpVs and M. pusilla UTEX LB991, based on clusters by 0.5 amino acid identity. Dashed circles represent host genes shared with viruses [5] .

Taxonomy

Group: dsDNA

Order: Unassigned
    • Genus: Prasinovirus

[2]

Structure

Viruses in Prasinovirus are enveloped, with icosahedral and Round geometries, and T=169 symmetry. The diameter is around 104-118 nm.[1]

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Prasinovirus 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
Prasinovirus Alga None Cell receptor endocytosis Lysis Nucleus Cytoplasm Passive diffusion

References

  1. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ^ a b ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
  3. ^ Cottrell, Matthew T.; Suttle, Curtis A. (1991). "Wide-spread occurrence and clonal variation in viruses which cause lysis of a cosmopolitan, eukaryotic marine phytoplankter, "Micromonas pusilla"" (PDF). Marine Ecology Progress Series. 78: 1–9. doi:10.3354/meps078001. ISSN 1616-1599.
  4. ^ Bellec, Laure; Grimsley, Nigel; Derelle, Evelyn; Moreau, Herve; Desdevises, Yves (2010). "Abundance, spatial distribution and genetic diversity of Ostreococcus tauri viruses in two different environments". Environmental Microbiology Reports. 2 (2): 313–321. doi:10.1111/j.1758-2229.2010.00138.x.
  5. ^ a b Finke, Jan F; Winget, Danielle M; Chan, Amy M; Suttle, Curtis A (2017). "Variation in the genetic repertoire of viruses Infecting Micromonas pusilla reflects horizontal gene transfer and links to their environmental distribution". Viruses. 9: 116. doi:10.3390/v9050116.{{cite journal}}: CS1 maint: unflagged free DOI (link)

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=Prasinovirus&oldid=839364317"