Betatetravirus is a genus of viruses, in the family Alphatetraviridae. Moths and butterflies serve as natural hosts. There are seven species in this genus. Infection outcome varies from unapparent to lethal.
Taxonomy The following species are assigned to the genus, scientific name in parentheses: Antheraea eucalypti virus (Betatetravirus antheraeae) Darna trima virus (Betatetravirus darnae) Dasychira pudibunda virus (Betatetravirus dasychirae) Nudaurelia capensis beta virus (Betatetravirus nudaureliae) Philosamia cynthia x ricini virus (Betatetravirus philosamiae) Pseudoplusia includens virus (Betatetravirus pseudoplusiae) Trichoplusia ni virus (Betatetravirus trichoplusiae)
Structure Viruses in Betatetravirus are non-enveloped, with icosahedral geometries, and T=4 symmetry. The diameter is around 40 nm. Genomes are linear, around 6.5kb in length.
Genus Structure Symmetry Capsid Genomic arrangement Genomic segmentationBetatetravirusIcosahedralT=4Non-envelopedLinearMonopartite
Life cycle Viral replication is cytoplasmic. Entry into the host cell is achieved by penetration into the host cell. Replication follows the positive stranded RNA virus replication model. Positive stranded RNA virus transcription is the method of transcription. Translation takes place by ribosomal skipping. Moths and butterflies serve as the natural host. Transmission routes are oral.
Genus Host details Tissue tropism Entry details Release details Replication site Assembly site TransmissionBetatetravirusMoths; butterfliesMidgutCell receptor endocytosisBuddingCytoplasmCytoplasmOral
References
External links Viralzone: Betatetravirus ICTV