Phaeovirus

from Wikipedia, the free encyclopedia
' Phaeovirus'
Systematics
Classification : Viruses
Area : Varidnaviria
Empire : Bamfordvirae
Phylum : Nucleocytoviricota
Class : Megaviricetes
Order : Algavirales
Family : Phycodnaviridae
Genre : Phaeovirus
Taxonomic characteristics
Genome : dsDNA linear
Baltimore : Group 1
Symmetry : spherical / icosahedral
Scientific name
Phaeovirus
Left

Phaeovirus is a genus of viruses in the Phycodnaviridae familyand thus belongs to the Phylum Nucleocytoviricota (aka Nucleocytoplasmic large DNA viruses , NCLDV). Algae serve as natural hosts. There are currently eleven species in this genus, including the type species Ectocarpus siliculosus virus 1 . The word component Phaeo- is derived from the Greek φαιός phaiós : "dark".

Systematics

Internal system

The International Committee on Taxonomy of Viruses (ICTV) recognized the following species as of November 2018:

  • Genus: Phaeovirus
  • Species: Ectocarpus siliculosus virus 1 (EsV-1, type species, host see Ectocarpus siliculosus )
  • Species: Ectocarpus siliculosus virus a (EsV-a, also EsV-1a)
  • Species: Ectocarpus fasciculatus virus a (EfV-a, host see Ectocarpus fasciculatus )
  • Species: Feldmannia species virus (FLSV, FsV, host see Ectocarpales: Acinetosporaceae )
  • Species: Feldmannia species virus a (FsV-a)
  • Species: Feldmannia irregularis virus a (FirrV-a, also FirrV-1)
  • Species: Hincksia hinckiae virus a (HhV-a, also HhV-1, host see ibid)
  • Species: Myriotrichia clavaeformis virus a (McV-a, also McV-1, host see Ectocarpales: Chordariaceae )
  • Species: Pilayella littoralis virus 1 (PlV-1, host see AlgaeBase: Pylaiella littoralis )

A list that also includes individual strains (isolates) and abbreviations can be found at ScienceDirect. Often - not always - the suffix -a designates a species, -1 the associated type strain (isolate).

External system

The following system follows Schulz et al. (2018) with corrections and additions according to Hao et al. (2018):

 Phycodnaviridae  


 Chlorovirus type 

Chlorovirus


   

YSLPV1, YSLPV2


   

DSLPV1


   

Prasinovirus





   

Phaeovirus


   

Mollivirus


   

Pandora Viruses





   

' Sylvan virus '



   

Coccolithoviruses



Template: Klade / Maintenance / Style

construction

The virions (virus particles) of the phaeoviruses have a shell with icosahedral or spherical geometry with the triangulation number T = 169 . The diameter is approx. 120–150  nm .

Genome

The genome is linear and approximately 150-350 Kbp (kilobase pairs) in length  .

In the type species EsV-1, the virions have a diameter of 200 nm, the genome length is 335,593 bp, 240 proteins are predicted to be encoded and the GC content is 51.7%.

Propagation cycle

Virus replication is nucleo-cytoplasmic (from the nucleus to the cytoplasm ). The virus leaves the host cell through lysis by means of lytic phospholipids . The transmission occurs through passive diffusion .

literature

Individual evidence

  1. a b c d e f ICTV: ICTV Master Species List 2019.v1 , New MSL including all taxa updates since the 2018b release, March 2020 (MSL # 35)
  2. a b c Viral Zone . ExPASy. Retrieved December 21, 2018.
  3. ^ ICTV: Virus Taxonomy . Retrieved December 22, 2015.
  4. ICTV Master Species List 2018a v1 , ICTV MSL including all taxa updates since the 2017 release.
  5. William H Wilson,. * Ilana C Gilg, Mohammad Moniruzzaman, Erin K Field, Sergey Koren, Gary R LeCleir, Joaquín Martínez Martínez, Nicole J Poulton, Brandon K Swan, Ramunas Stepanauskas, Steven W Wilhelm: Genomic exploration of individual giant ocean viruses , in: ISME Journal 11 (8), August 2017, pp. 1736–1745, doi: 10.1038 / ismej.2017.61 , PMC 5520044 (free full text), PMID 28498373
  6. Guiry & Guiry: World-wide electronic publication, National University of Ireland, Galway 2018 (accessed December 21, 2018)
  7. Phycodnaviridae: List of species in the genus Phaeovirus , in: ScienceDirect, Virus Taxonomy, 2012
  8. Frederik Schulz, Lauren Alteio, Danielle Goudeau, Elizabeth M. Ryan, Feiqiao B. Yu, Rex R. Malmstrom, Jeffrey Blanchard, Tanja Woyke: Hidden diversity of soil giant viruses , in: Nature Communicationsvolume 9, Article number: 4881 (2018 ) from November 19, 2018, doi: 10.1007 / s00705-016-2853-4
  9. Hao Chen, Weijia Zhang, Xiefei Li, Yingjie Pan, Shuling Yan, Yongjie Wang: The genome of a prasinoviruses-related freshwater virus reveals unusual diversity of phycodnaviruses , in: BMC Genomics, December 2018, 7:49 pm (online January 15 2018), doi: 10.1186 / s12864-018-4432-4
  10. Fumito Maruyama, Shoko Ueki: Evolution and Phylogeny of Large DNA Viruses, Mimiviridae and Phycodnaviridae Including Newly Characterized Heterosigma akashiwo Virus. In: Front. Microbiol. November 30, 2016, doi: 10.3389 / fmicb.2016.01942 , PMC 5127864 (free full text), PMID 27965659 .
  11. Jean-Michel Claverie, Chantal Abergel: Mimiviridae : An Expanding Family of Highly Diverse Large dsDNA Viruses Infecting a Wide Phylogenetic Range of Aquatic Eukaryotes]. In: Viruses . 2018 Sep; 10 (9), September 18, 2018, p. 506, doi: 10.3390 / v10090506 , PMC 6163669 (free full text), PMID 30231528 , Tab. 2
  12. David M. Needham, Alexandra Z. Worden et al .: A distinct lineage of giant viruses brings a rhodopsin photosystem to unicellular marine predators , in: PNAS, 23 September 2019, doi: 10.1073 / pnas.1907517116 , ISSN  0027-8424 , here: Supplement 1 (xlsx)

Web links