Ilarvirus

Ilarvirus is a genus of viruses, in the family Bromoviridae.[2] Plants serve as natural hosts. There are currently 22 species in this genus including the type species Tobacco streak virus.[1][3]

Ilarvirus
Apple mosaic virus
Virus classification
Group:
Group IV ((+)ssRNA)
Family:
Bromoviridae
Genus:
Ilarvirus
Type species
Tobacco streak virus
Species[1]
  • Ageratum latent virus
  • American plum line pattern virus
  • Apple mosaic virus
  • Asparagus virus 2
  • Blackberry chlorotic ringspot virus
  • Blueberry shock virus
  • Citrus leaf rugose virus
  • Citrus variegation virus
  • Elm mottle virus
  • Fragaria chiloensis latent virus
  • Humulus japonicus latent virus
  • Lilac leaf chlorosis virus
  • Lilac ring mottle virus
  • Parietaria mottle virus
  • Privet ringspot virus
  • Prune dwarf virus
  • Prunus necrotic ringspot virus
  • Spinach latent virus
  • Strawberry necrotic shock virus
  • Tobacco streak virus
  • Tomato necrotic streak virus
  • Tulare apple mosaic virus

Structure

Viruses in the genus Ilarvirus are non-enveloped, with icosahedral and Quasi-spherical geometries, and T=3 symmetry. The diameter is around 29 nm. Genomes are linear and segmented, tripartite.[1][3]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
IlarvirusIcosahedralT=3Non-envelopedLinearSegmented

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, using the internal initiation model of subgenomic rna transcription is the method of transcription. The virus exits the host cell by tubule-guided viral movement. Plants serve as the natural host. Transmission routes are mechanical and contact.[1][3]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
IlarvirusPlantsNoneViral movement; mechanical inoculationViral movementCytoplasmCytoplasmMechanical inoculation: insects; contact

References
  1. "ICTV Report Bromoviridae".
  2. Bujarski, J; Gallitelli, D; García-Arenal, F; Pallás, V; Palukaitis, P; Reddy, MK; Wang, A; ICTV Report, Consortium (August 2019). "ICTV Virus Taxonomy Profile: Bromoviridae". The Journal of General Virology. 100 (8): 1206–1207. doi:10.1099/jgv.0.001282. PMID 31192783.
  3. "Viral Zone". ExPASy. Retrieved 15 June 2015.
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