Betabaculovirus

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Betabaculovirus
Phthorimaea operculella granulovirus South Africa.tif
Electron micrograph of Phthorimaea operculella granulovirus occlusion bodies
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(unranked): Virus
Class: Naldaviricetes
Order: Lefavirales
Family: Baculoviridae
Genus:Betabaculovirus

Betabaculovirus is a genus of viruses, in the family Baculoviridae . Arthropods serve as natural hosts. There are 26 species in this genus. [1] [2] [3]

Contents

Taxonomy

The following species are assigned to the genus: [3]

Structure

Viruses in Betabaculovirus are enveloped. Genomes are circular, around 80-180kb in length. The genome codes for 100 to 180 proteins. [2]

GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
BetabaculovirusBudded or OccludedEnvelopedCircularMonopartite

Life cycle

Viral replication is nuclear. Entry into the host cell is achieved by attachment of the viral glycoproteins to host receptors, which mediates endocytosis. Replication follows the dsDNA bidirectional replication model. Dna templated transcription, with some alternative splicing mechanism is the method of transcription. The virus exits the host cell by nuclear pore export, and existing in occlusion bodies after cell death and remaining infectious until finding another host. Arthropods serve as the natural host. Transmission routes are fecal-oral. [2]

GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
BetabaculovirusArthropodsMidgut then hemocoel; digestive gland epithelium (shrimps)Cell receptor endocytosisBudding; OcclusionNucleusNucleusOral-fecal

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References

  1. ↑ Harrison, RL; Herniou, EA; Jehle, JA; Theilmann, DA; Burand, JP; Becnel, JJ; Krell, PJ; van Oers, MM; Mowery, JD; Bauchan, GR; Ictv Report, Consortium (September 2018). "ICTV Virus Taxonomy Profile: Baculoviridae". The Journal of General Virology. 99 (9): 1185–1186. doi: 10.1099/jgv.0.001107 . PMID   29947603.
  2. 1 2 3 "Viral Zone". ExPASy. Retrieved 15 June 2015.
  3. 1 2 "Virus Taxonomy: 2020 Release". International Committee on Taxonomy of Viruses (ICTV). March 2021. Retrieved 12 May 2021.
   4. Rohrmann, G.F. 2019. Baculovirus Molecular Biology 4th Ed.       https://www.ncbi.nlm.nih.gov/books/NBK543458/
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