Passerivirus

Passerivirus is a genus of viruses in the order Picornavirales, in the family Picornaviridae. Birds serve as natural hosts. There are currently only two species in this genus: the type species Passerivirus A and a second, novel passerivirus that was discovered in 2018 in a population of Hungarian home-reared finches, where it achieved an over 50 percent mortality rate[1].

Passerivirus
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Pisuviricota
Class: Pisoniviricetes
Order: Picornavirales
Family: Picornaviridae
Genus: Passerivirus
Type species
Passerivirus A

[2][3]

Taxonomy

Group: ssRNA(+)

[3]

Structure

Viruses in Passerivirus are non-enveloped, with icosahedral and Spherical geometries, and T=pseudo3 symmetry. The diameter is around 30 nm. Genomes are linear and non-segmented, around 8kb in length.[2]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
PasserivirusIcosahedralPseudo T=3Non-envelopedLinearMonopartite

Life cycle

Viral replication is cytoplasmic. Entry into the host cell is achieved by attachment of the virus to host receptors, which mediates endocytosis. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. The virus exits the host cell by lysis, and viroporins. Birds serve as the natural host.[2]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
PasserivirusBirdsNoneCell receptor endocytosisLysisCytoplasmCytoplasmUnknown

References
  1. Pankovics, Péter; Boros, Ákos; Phan, Tung Gia; Delwart, Eric; Reuter, Gábor (2018). "A novel passerivirus (family Picornaviridae) in an outbreak of enteritis with high mortality in estrildid finches (Uraeginthus sp.)" (PDF). Archives of Virology. 163 (4): 1063–1071. doi:10.1007/s00705-017-3699-0. PMID 29322272.
  2. "Viral Zone". ExPASy. Retrieved 13 August 2015.
  3. ICTV. "Virus Taxonomy: 2014 Release". Retrieved 13 August 2015.
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