Hypoviridae

Hypoviridae is a family of viruses. Fungi serve as natural hosts. There are currently four species in this family, all in the single genus Hypovirus[1]. Diseases associated with this family include: host virulence reduction.[1][2]

Hypoviridae
Virus classification
(unranked): Virus
Realm: Riboviria
Phylum: incertae sedis
Family: Hypoviridae
Genera

Structure

The diameter is around 50-80 nm. Genomes are linear, around 9-13kb in length. The genome has 1 or 2 open reading frames.[1][2] Hypoviridae was the first family of viruses described that lacked a capsid.[3] and does not assemble any virion to spread.

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
HypovirusNo true capsidNon-envelopedLinearMonopartite

Life cycle

Viral replication is cytoplasmic. 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 cell to cell movement. Fungi serve as the natural host.[1][2] The virus never leaves its host and probably replicates in pleomorphic host-derived lipid vesicles. Transmission is probably dependent on host hyphal anastomosis.[3]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
HypovirusFungiNoneCytoplasmic exchange; hyphal anastomosisCytoplasmic exchange; hyphal anastomosisCytoplasmCytoplasmCytoplasmic exchange; hyphal anastomosis

References
  1. Suzuki, N; Ghabrial, SA; Kim, KH; Pearson, M; Marzano, SL; Yaegashi, H; Xie, J; Guo, L; Kondo, H; Koloniuk, I; Hillman, BI; Ictv Report, Consortium (May 2018). "ICTV Virus Taxonomy Profile: Hypoviridae". The Journal of General Virology. 99 (5): 615–616. doi:10.1099/jgv.0.001055. PMID 29589826.
  2. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  3. Dolja, V. V.; Koonin, E. V. (2012). "Capsid-Less RNA Viruses". ELS. doi:10.1002/9780470015902.a0023269. ISBN 978-0470016176.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.