Vitivirus Explained

Vitivirus is a genus of viruses in the order Tymovirales, in the family Betaflexiviridae.[1] Plants serve as natural hosts. There are 15 species in this genus.[2] [3]

Taxonomy

The genus contains the following species:

Structure

Viruses in Vitivirus are non-enveloped, with flexuous and filamentous geometries. The diameter is around 12 nm. Genomes are linear, around 7.6kb in length. The genome codes for 5 proteins.

Genus Structure Symmetry !Capsid Genomic arrangement Genomic segmentation
VitivirusFilamentousNon-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 tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (mechanical inoculation pseudococcid mealybugs and aphids). Transmission routes are vector and mechanical.

External links

Notes and References

  1. Complete genome sequence of a novel vitivirus isolated from grapevine. Al Rwahnih M, Sudarshana MR, Uyemoto JK and Rowhani A, J Virol., September 2012, volume 86, issue 17, page 9545,
  2. Web site: ICTV. Virus Taxonomy: 2014 Release. 15 June 2015.
  3. Web site: Virus Taxonomy: 2020 Release . International Committee on Taxonomy of Viruses (ICTV) . March 2021 . 15 May 2021.