Victorivirus

Victorivirus is a genus of viruses, in the family Totiviridae. Filamentous fungi serve as natural hosts. There are currently 14 species in this genus including the type species Helminthosporium victoriae virus 190S.[1][2]

Victorivirus
Capsid structure of Helminthosporium victoriae virus 190S (HvV190S)
Cryo-EM of HvV190S virions.
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Duplornaviricota
Class: Chrymotiviricetes
Order: Ghabrivirales
Family: Totiviridae
Genus: Victorivirus
Type species
Helminthosporium victoriae virus 190S

Structure

Viruses in Victorivirus are non-enveloped, with icosahedral geometries, and T=2 symmetry. The diameter is around 40 nm. Genomes are linear, around 4.6-6.7kb in length. The genome has 2 open reading frames.[1]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
VictorivirusIcosahedralT=2Non-envelopedLinear

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by virus remains intracellular. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. Translation takes place by RNA termination-reinitiation. The virus exits the host cell by cell to cell movement. Filamentous fungi serve as the natural host.[1]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
VictorivirusFungiNoneUnknownUnknownCytoplasmCytoplasmUnknown

Taxonomy

The genus Victorivirus includes the species:

  • Aspergillus foetidus slow virus 1
  • Beauveria bassiana victorivirus 1
  • Chalara elegans RNA Virus 1
  • Coniothyrium minitans RNA virus
  • Eimeria brunetti RNA virus 1
  • Eimeria tenella RNA virus 1
  • Epichloe festucae virus 1
  • Gremmeniella abietina RNA virus L1
  • Helicobasidium mompa totivirus 1-17
  • Helminthosporium victoriae virus 190S
  • Magnaporthe oryzae virus 1
  • Magnaporthe oryzae virus 2
  • Rosellinia necatrix victorivirus 1
  • Sphaeropsis sapinea RNA virus 1
  • Sphaeropsis sapinea RNA virus 2
  • Tolypocladium cylindrosporum virus 1[2]

References
  1. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
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