Biology:Hordeivirus

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Short description: Genus of viruses


Hordeivirus
Virus classification e
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Alsuviricetes
Order: Martellivirales
Family: Virgaviridae
Genus: Hordeivirus

Hordeivirus is a genus of viruses, in the family Virgaviridae.[1][2] Plants serve as natural hosts. There are four species in this genus.[1][3][4][5]

Taxonomy

The following four species are assigned to the genus:[4][6]:386

Structure

Barley stripe mosaic virus (BSMV) genome organization with functional regions of the γb protein highlighted

Viruses in the genus Hordeivirus are non-enveloped, with rod-shaped geometries. The diameter is around 20-25 nm, with a length of 20-25 nm. Genomes are linear and segmented, tripartite or quadripartite, around 3.3kb in length.[1][3] The earliest research on Hordeiviruses has been done on BSMV, and RNA sequencing shows BSMV's guide RNAs encode for seven major proteins, and suggest that this is true for the entire genus.[6]:388

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Hordeivirus Rod-shaped Helical Non-enveloped Linear Segmented

Life cycle

Viral replication is cytoplasmic, and is lysogenic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. Translation takes place by leaky scanning. The virus exits the host cell by tripartite non-tubule guided viral movement. Plants serve as the natural host. Transmission routes are seed borne.[1][3]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Hordeivirus Plants None Unknown Viral movement Cytoplasm Cytoplasm Mechanical: contact; seed[6]:386

Hosts

Monocots, and dicots including Chenopodium spp.[6]:386

References

  1. 1.0 1.1 1.2 1.3 "ICTV Report Virgaviridae". http://www.ictv.global/report/virgaviridae. 
  2. Adams, Michael J.; Antoniw, John F.; Kreuze, Jan (2009-10-28). "Virgaviridae: a new family of rod-shaped plant viruses". Archives of Virology (Springer) 154 (12): 1967–1972. doi:10.1007/s00705-009-0506-6. ISSN 0304-8608. 
  3. 3.0 3.1 3.2 "Viral Zone". ExPASy. http://viralzone.expasy.org/all_by_species/42.html. Retrieved 15 June 2015. 
  4. 4.0 4.1 "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. https://ictv.global/taxonomy. 
  5. Bragg, J.N., Solovyev, A.G., Morozov, S. Yu, Atabekov, J.G. Jackson, A.O. Horeivirus (2006). ICTVdB - The Universal Virus Database, version 4. Büchen-Osmond, C (Ed), Columbia University, New York, USA.
  6. 6.0 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 Jackson, Andrew O.; Lim, Hyoun-Sub; Bragg, Jennifer; Ganesan, Uma; Lee, Mi Yeon (2009). "Hordeivirus Replication, Movement, and Pathogenesis". Annual Review of Phytopathology (Annual Reviews) 47 (1): 385–422. doi:10.1146/annurev-phyto-080508-081733. ISSN 0066-4286. 

External links

Wikidata ☰ Q5902941 entry