Betabaculovirus
Betabaculovirus is a genus of viruses, in the family Baculoviridae. Arthropods serve as natural hosts. There are 29 species in this genus.
Taxonomy
The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:Betabaculovirus adoranae, Adoxophyes orana granulovirusBetabaculovirus agsegetum, Agrotis segetum granulovirusBetabaculovirus alterclanastomosis, Clostera anastomosis granulovirus BBetabaculovirus altermyunipunctae, Mythimna unipuncta granulovirusBetabaculovirus arrapae, Pieris rapae granulovirus WuhanBetabaculovirus chofumiferanae, Choristoneura occidentalis granulovirusBetabaculovirus clanachoretae, Clostera anachoreta granulovirusBetabaculovirus clanastomosis, Clostera anastomosis granulovirus ABetabaculovirus cnamedinalis, Cnaphalocrocis medinalis granulovirusBetabaculovirus cryleucotretae, Cryptophlebia leucotreta granulovirusBetabaculovirus cypomonellae, Cydia pomonella granulovirusBetabaculovirus disaccharalis, Diatraea saccharalis granulovirusBetabaculovirus epaporemae, Epinotia aporema granulovirusBetabaculovirus erellonis, Erinnyis ello granulovirusBetabaculovirus habrilliantis, Harrisina brillians granulovirusBetabaculovirus helarmigerae, Helicoverpa armigera granulovirusBetabaculovirus hycuneae, Hyphantria cunea granulovirusBetabaculovirus lacoleraceae, Lacanobia oleracea granulovirusBetabaculovirus maphaseoli, Matsumuraeses phaseoli granulovirusBetabaculovirus molatipedis, Mocis latipes granulovirusBetabaculovirus myunipunctae, Pseudaletia unipuncta granulovirusBetabaculovirus phoperculellae, Phthorimaea operculella granulovirusBetabaculovirus plinterpunctellae, Plodia interpunctella granulovirusBetabaculovirus pluxylostellae, Plutella xylostella granulovirusBetabaculovirus psincretae, Psilogramma increta granulovirusBetabaculovirus spliturae, Spodoptera litura granulovirusBetabaculovirus spofrugiperdae, Spodoptera frugiperda granulovirusBetabaculovirus trini, Trichoplusia ni granulovirusBetabaculovirus xecnigri, Xestia c-nigrum granulovirusStructure
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.| Genus | Host details | Tissue tropism | Entry details | Release details | Replication site | Assembly site | Transmission |
| Betabaculovirus | Arthropods | Midgut then hemocoel; digestive gland epithelium | Cell receptor endocytosis | Budding; Occlusion | Nucleus | Nucleus | Oral-fecal |