Badnavirus Explained

Badnavirus is a genus of viruses, in the family Caulimoviridae order Ortervirales. Plants serve as natural hosts. There are 67 species in this genus. Diseases associated with this genus include: CSSV: leaf chlorosis, root necrosis, red vein banding in young leaves, small mottled pods, and stem/root swelling followed by die-back. Infection decreases yield by 25% within one year, 50% within two years and usually kills trees within 3–4 years.[1] [2]

Taxonomy

The following species are recognized:[3]

Structure

Viruses in Badnavirus are non-enveloped, with bacilliform geometries. These viruses are about 30 nm wide and 90-900 nm long. Genomes are circular and non-segmented.

Genus Structure Symmetry !Capsid Genomic arrangement Genomic segmentation
BadnavirusBacilliformT=3Non-envelopedCircularMonopartite

Life cycle

Viral replication is nuclear/cytoplasmic. Entry into the host cell is achieved by attachment of the viral proteins to host receptors, which mediates endocytosis. Replication follows the dsDNA(RT) replication model. DNA-templated transcription, specifically dsDNA-RT transcription is the method of transcription. The virus exits the host cell by nuclear pore export, and tubule-guided viral movement. Plants serve as the natural host. The virus is transmitted via a vector (cssv: mealybugs). Transmission routes are vector, mechanical, and seed borne.

External links

Notes and References

  1. Web site: Viral Zone. ExPASy. 15 June 2015.
  2. Web site: Genus: Badnavirus - Caulimoviridae - Reverse Transcribing DNA and RNA Viruses - International Committee on Taxonomy of Viruses (ICTV) .
  3. Web site: Virus Taxonomy: 2020 Release . International Committee on Taxonomy of Viruses (ICTV) . March 2021 . 21 May 2021.

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Badnavirus".

Except where otherwise indicated, Everything.Explained.Today is © Copyright 2009-2024, A B Cryer, All Rights Reserved. Cookie policy.