Lolavirus

Lolavirus is a genus of viruses in the order Tymovirales, in the family Alphaflexiviridae. Plants, specifically ryegrass,[1] serve as natural hosts. There is only one species in this genus: Lolium latent virus.[2][3]

Lolavirus
Virus classification
(unranked): Virus
Realm: Riboviria
Kingdom: Orthornavirae
Phylum: Kitrinoviricota
Class: Alsuviricetes
Order: Tymovirales
Family: Alphaflexiviridae
Genus: Lolavirus

Structure

Viruses in Lolavirus are non-enveloped, with flexuous and filamentous geometries. The diameter is around 13 nm, with a length of 640 nm. Genomes are linear, around 7.6kb in length,[2] with five open reading frames that encode the replication-associated protein, the movement-associated triple gene block proteins, and the coat protein (which is cleaved into two parts weighing about 28 and 33 kDa).[1][4] The genome codes for 6 proteins.[2]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
LolavirusFilamentousNon-envelopedLinearMonopartite

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. The virus exits the host cell by tripartite non-tubule guided viral movement. Plants serve as the natural host.[2]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
LolavirusPlantsNoneViral movement; mechanical inoculationViral movementCytoplasmCytoplasmUnknown

References
  1. Vaira, A. M.; Maroon-Lango, C. J.; Hammond, J (2008). "Molecular characterization of Lolium latent virus, proposed type member of a new genus in the family Flexiviridae". Archives of Virology. 153 (7): 1263–70. doi:10.1007/s00705-008-0108-8. PMID 18509590.
  2. "Viral Zone". ExPASy. Retrieved 15 June 2015.
  3. "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 15 May 2021.
  4. Vaira, A. M.; Lim, H. S.; Bauchan, G. R.; Owens, R. A.; Natilla, A; Dienelt, M. M.; Reinsel, M. D.; Hammond, J (2012). "Lolium latent virus (Alphaflexiviridae) coat proteins: Expression and functions in infected plant tissue". Journal of General Virology. 93 (Pt 8): 1814–24. doi:10.1099/vir.0.042960-0. PMID 22573739.

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