Betabaculovirus

(Redirected from Granulosis virus)

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]

Betabaculovirus
Electron micrograph of Phthorimaea operculella granulovirus occlusion bodies
Virus classification Edit this classification
(unranked): Virus
Class: Naldaviricetes
Order: Lefavirales
Family: Baculoviridae
Genus: Betabaculovirus

Taxonomy

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

Structure

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

Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentation
Betabaculovirus Budded or Occluded Enveloped Circular Monopartite

Life cycle

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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]

Genus Host details Tissue tropism Entry details Release details Replication site Assembly site Transmission
Betabaculovirus Arthropods Midgut then hemocoel; digestive gland epithelium (shrimps) Cell receptor endocytosis Budding; Occlusion Nucleus Nucleus Oral-fecal

References

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  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. ^ a b c "Viral Zone". ExPASy. Retrieved 15 June 2015.
  3. ^ a b "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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