Fabavirus

Fabavirus
Virus classification
Group: Group IV ((+)ssRNA)
Order: Picornavirales
Family: Secoviridae
Subfamily: Comovirinae
Genus: Fabavirus
Type Species

Fabavirus is a genus of plant viruses (plant pathogens) in the order Picornavirales, in the family Secoviridae, in the subfamily Comovirinae. Plants serve as natural hosts. There are currently five species in this genus including the type species Broad bean wilt virus 1.[1][2][3]

Taxonomy

Group: ssRNA(+)

[2]

Structure

Viruses in Fabavirus are non-enveloped, with icosahedral geometries, and T=pseudo3 symmetry. The diameter is around 28-30 nm. Genomes are linear and segmented, bipartite, around 23.4kb in length.[1]

Genus Structure Symmetry Capsid Genomic Arrangement Genomic Segmentation
FabavirusIcosahedralPseudo T=3Non-EnvelopedLinearSegmented

Life Cycle

Viral replication is cytoplasmic. 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 tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (aphid). Transmission routes are vector and mechanical.[1]

Genus Host Details Tissue Tropism Entry Details Release Details Replication Site Assembly Site Transmission
FabavirusPlantsNoneViral movement; mechanical innoculationViral movementCytoplasmCytoplasmMechanical innoculation: aphids

History

Proposed in 1987, as the Fabavirus group, it was originally unassigned but given genus status in 1993 as a member of the Comoviridae, of the Picornavirales in 2008, and reached its current taxonomic status in 2009. There are five species.[4] The genus is named after the broad bean (Vicia faba).[3]

References

  1. 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
  2. 1 2 ICTV. "Virus Taxonomy: 2014 Release". Retrieved 15 June 2015.
  3. 1 2 V. Lisa; G. Boccardo (1996). "Fabaviruses". In Murant, A.F.; Harrison, B.D. The Plant Viruses Polyhedral Virions and Bipartite RNA Genomes. Boston, MA: Springer US. pp. 229–250. ISBN 978-1-4899-1772-0. Retrieved 10 December 2014.
  4. ICTV Virus Taxonomy: 2013 Release. Fabavirus

See Also

External Links

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