Alphabaculovirus


Alphabaculovirus is a genus of viruses in the family Baculoviridae. The natural hosts of species in this family are invertebrates, among them winged insects, and decapods. However, species in this genus have been isolated only from the insect order Lepidoptera. There are 68 species in the genus.

Structure

Viruses in Alphabaculovirus are enveloped, with circular genomes around 80–180 kbp in length. The genome codes for 100 to 180 proteins.
GenusStructureSymmetryCapsidGenomic arrangementGenomic segmentation
AlphabaculovirusBudded or OccludedEnvelopedCircularMonopartite

Life cycle

Alphabaculovirus 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 double-stranded DNA bidirectional replication model. DNA-templated transcription with some alternative splicing mechanism is the method of transcription. Translation takes place by leaky scanning. The virus exits the host cell by nuclear pore export and exists in occlusion bodies after cell death, remaining infectious until finding another host. Winged insects, arthropods, Lepidoptera, Hymenoptera, Diptera, and Decapoda serve as natural hosts. Transmission routes are fecal-oral.
GenusHost detailsTissue tropismEntry detailsRelease detailsReplication siteAssembly siteTransmission
AlphabaculovirusWinged insectsMidgut then hemocoel; digestive gland epithelium GlycoproteinsBudding; OcclusionNucleusNucleusOral-fecal

Taxonomy

The genus contains the following species, listed by scientific name and followed by the exemplar virus of the species:Alphabaculovirus adhonmai, Adoxophyes honmai nucleopolyhedrovirusAlphabaculovirus agipsilonis, Agrotis ipsilon multiple nucleopolyhedrovirusAlphabaculovirus agsegetum, Agrotis segetum nucleopolyhedrovirus AAlphabaculovirus alteragsegetum, Agrotis segetum nucleopolyhedrovirus BAlphabaculovirus alterchofumiferanae, Choristoneura fumiferana DEF multiple nucleopolyhedrovirusAlphabaculovirus alterchrincludentis, Chrysodeixis includens nucleopolyhedrovirusAlphabaculovirus alterhycuneae, Hypantria cunea nucleopolyhedrovirus BAlphabaculovirus altermyunipunctae, Mythimna unipuncta nucleopolyhedrovirusAlphabaculovirus altersperidaniae, Spodoptera eridania nucleopolyhedrovirusAlphabaculovirus alterspexiguae, Spodoptera exigua multiple nucleopolyhedrovirusAlphabaculovirus angemmatalis, Anticarsia gemmatalis multiple nucleopolyhedrovirusAlphabaculovirus anpernyi, Antheraea pernyi nucleopolyhedrovirusAlphabaculovirus ardigrammae, Artaxa digramma nucleopolyhedrovirusAlphabaculovirus aucalifornicae, Autographa californica multiple nucleopolyhedrovirusAlphabaculovirus bomori, Bombyx mori nucleopolyhedrovirusAlphabaculovirus busuppressariae, Buzura suppressaria nucleopolyhedrovirusAlphabaculovirus capomonae, Catopsilia pomona nucleopolyhedrovirusAlphabaculovirus chofumiferanae, Choristoneura fumiferana multiple nucleopolyhedrovirusAlphabaculovirus chomurinanae, Choristoneura murinana nucleopolyhedrovirusAlphabaculovirus chorosaceanae, Choristoneura rosaceana nucleopolyhedrovirusAlphabaculovirus chrincludentis, Pseudoplusia includens single nucleopolyhedrovirusAlphabaculovirus chrychalcites, Chrysodeixis chalcites nucleopolyhedrovirusAlphabaculovirus clabilineatae, Clanis bilineata nucleopolyhedrovirusAlphabaculovirus covestigialis, Condylorrhiza vestigialis multiple nucleopolyhedrovirusAlphabaculovirus crypeltasticae, Cryptophlebia peltastica nucleopolyhedrovirusAlphabaculovirus cycundantis, Cyclophragma undans nucleopolyhedrovirusAlphabaculovirus dijunonis, Dione juno nucleopolyhedrovirusAlphabaculovirus ecobliquae, Ectropis obliqua nucleopolyhedrovirusAlphabaculovirus eppostvittanae, Epiphyas postvittana nucleopolyhedrovirusAlphabaculovirus erankerariae, Erannis ankeraria nucleopolyhedrovirusAlphabaculovirus eupseudoconspersae, Euproctis pseudoconspersa nucleopolyhedrovirusAlphabaculovirus helarmigerae, Helicoverpa armigera nucleopolyhedrovirusAlphabaculovirus heleucae, Hemileuca sp. nucleopolyhedrovirusAlphabaculovirus hycuneae, Hyphantria cunea nucleopolyhedrovirusAlphabaculovirus hytalacae, Hyposidra talaca nucleopolyhedrovirusAlphabaculovirus lafiscellariae, Lambdina fiscellaria nucleopolyhedrovirusAlphabaculovirus leseparatae, Leucania separata nucleopolyhedrovirusAlphabaculovirus lonobliquae, Lonomia obliqua multiple nucleopolyhedrovirusAlphabaculovirus lydisparis, Lymantria dispar multiple nucleopolyhedrovirusAlphabaculovirus lyxylinae, Lymantria xylina multiple nucleopolyhedrovirusAlphabaculovirus mabrassicae, Mamestra brassicae multiple nucleopolyhedrovirusAlphabaculovirus maconfiguratae, Mamestra configurata nucleopolyhedrovirus AAlphabaculovirus mavitratae, Maruca vitrata nucleopolyhedrovirusAlphabaculovirus myunipunctae, Mythimna unipuncta nucleopolyhedrovirusAlphabaculovirus olmendosae, Olene mendosa nucleopolyhedrovirusAlphabaculovirus opbrumatae, Operophtera brumata nucleopolyhedrovirusAlphabaculovirus orleucostigmae, Orgyia leucostigma nucleopolyhedrovirusAlphabaculovirus orpseudotsugatae, Orgyia pseudotsugata multiple nucleopolyhedrovirusAlphabaculovirus oxochraceae, Oxyplax ochracea nucleopolyhedrovirusAlphabaculovirus pastagnalis, Parapoynx stagnalis nucleopolyhedrovirusAlphabaculovirus pavitrealis, Palpita vitrealis nucleopolyhedrovirusAlphabaculovirus peluscae, Perigonia lusca single nucleopolyhedrovirusAlphabaculovirus pesauciae, Peridroma species nucleopolyhedrovirusAlphabaculovirus ranus, Rachiplusia nu nucleopolyhedrovirusAlphabaculovirus raous, Rachiplusia ou multiple nucleopolyhedrovirusAlphabaculovirus speridaniae, Spodoptera eridania nucleopolyhedrovirusAlphabaculovirus spexemptae, Spodoptera exempta nucleopolyhedrovirusAlphabaculovirus spexiguae, Spodoptera exigua multiple nucleopolyhedrovirusAlphabaculovirus splittoralis, Spodoptera littoralis nucleopolyhedrovirusAlphabaculovirus spliturae, Spodoptera litura nucleopolyhedrovirusAlphabaculovirus spocosmioidis, Spodoptera cosmioides nucleopolyhedrovirusAlphabaculovirus spofrugiperdae, Spodoptera frugiperda multiple nucleopolyhedrovirusAlphabaculovirus sujujubae, Sucra jujuba nucleopolyhedrovirusAlphabaculovirus thorichlaceae, Thysanoplusia orichalcea nucleopolyhedrovirusAlphabaculovirus travishnous, Trabala vishnou gigantina nucleopolyhedrovirusAlphabaculovirus trini, Trichoplusia ni single nucleopolyhedrovirusAlphabaculovirus urprotei, Urbanus proteus nucleopolyhedrovirusAlphabaculovirus wisignatae, Wiseana signata nucleopolyhedrovirus