Mimoreovirus

Mimoreovirus is a genus of viruses, in the family Reoviridae, in the subfamily Sedoreovirinae. The only isolate infects the marine photosynthetic protist Micromonas pusilla, a prasinophyte.[1] There is only one species in this genus: Micromonas pusilla reovirus.[2][3]

Mimoreovirus
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Duplornaviricota
Class: Resentoviricetes
Order: Reovirales
Family: Reoviridae
Subfamily: Sedoreovirinae
Genus: Mimoreovirus

Structure

Viruses in Mimoreovirus are non-enveloped, with icosahedral geometries, and T=13, T=2 symmetry. The diameter is around 90-95 nm. Genomes are linear and segmented, around 15.8kb in length. The genome codes for 11 proteins.[2]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
MimoreovirusIcosahedralT=13, T=2Non-envelopedLinearSegmented

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment to host receptors, which mediates endocytosis. Replication follows the double-stranded RNA virus replication model. Double-stranded RNA virus transcription is the method of transcription. The virus exits the host cell by monopartite non-tubule guided viral movement. Marine photosynthetic protists serve as the natural host. Transmission routes are passive diffusion.[2]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
MimoreovirusAlgaeNoneCell receptor endocytosisCell deathCytoplasmCytoplasmArthropod bite

References
  1. Attoui, H; Jaafar, F.M.; Belhouchet, M.; de Micco, P.; Lamballerie, X.; Brussaard, C.P.D. (2006). "Micromonas pusilla reovirus: a new member of the family Reoviridae assigned to a novel proposed genus (Mimoreovirus)". Journal of General Virology. 87: 1375–1383. doi:10.1099/vir.0.81584-0. PMID 16603541.
  2. "Viral Zone". ExPASy. Retrieved 13 August 2015.
  3. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 13 May 2021.
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