Betabaculovirus Explained

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]}

Taxonomy

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

• Adoxophyes orana granulovirus
• Agrotis segetum granulovirus
• Artogeia rapae granulovirus
• Choristoneura fumiferana granulovirus
• Clostera anachoreta granulovirus
• Clostera anastomosis granulovirus A
• Clostera anastomosis granulovirus B
• Cnaphalocrocis medinalis granulovirus
• Cryptophlebia leucotreta granulovirus
• Cydia pomonella granulovirus
• Diatraea saccharalis granulovirus
• Epinotia aporema granulovirus
• Erinnyis ello granulovirus
• Harrisina brillians granulovirus
• Helicoverpa armigera granulovirus
• Lacanobia oleracea granulovirus
• Mocis latipes granulovirus
• Mythimna unipuncta granulovirus A
• Mythimna unipuncta granulovirus B
• Phthorimaea operculella granulovirus
• Plodia interpunctella granulovirus
• Plutella xylostella granulovirus
• Spodoptera frugiperda granulovirus
• Spodoptera litura granulovirus
• Trichoplusia ni granulovirus
• Xestia c-nigrum granulovirus

Structure

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

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

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.

External links

• ICTV Report: Baculoviridae
• Viralzone: Betabaculovirus

Notes and 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 . ICTV Virus Taxonomy Profile: Baculoviridae. . The Journal of General Virology . September 2018 . 99 . 9 . 1185–1186 . 10.1099/jgv.0.001107 . 29947603. free .
2. Web site: Viral Zone. ExPASy. 15 June 2015.
3. Web site: Virus Taxonomy: 2020 Release . International Committee on Taxonomy of Viruses (ICTV) . March 2021 . 12 May 2021.