ICTV Report

Family: Bidnaviridae (interim)

This is a summary page created by the ICTV Report Editors using information from associated Taxonomic Proposals and the Master Species List.

Edited by: Arvind Varsani
Posted: November 2024

Summary

The family Bidnaviridae includes ssDNA(+/-) viruses of invertebrates (Table 1 Bidnaviridae). The family Bidnaviridae was established in 2012 (Master Species List #26).

Table 1 Bidnaviridae. Characteristics of members of the family Bidnaviridae.

CharacteristicDescription
ExampleBombyx mori bidensovirus (A: EU623082; B: EU623083), species Bombyx mori bidensovirus, genus Bidensovirus
VirionIcosahedral particles, 25 nm in diameter
GenomessDNA(+/-); two linear ambisense segments with a total of 12.5–12.6 kb. The two segments are encapsidated separately
ReplicationA rolling-hairpin mechanism
TranslationFrom capped and polyadenylated mRNA
Host rangeInvertebrates
TaxonomyRealm Monodnaviria, kingdom Shotokuvirae, phylum Cossaviricota, class Mouviricetes, order Polivirales: 1 genus, 1 species
Bidnaviridae genome
Figure 1 Bidnaviridae. Genome organisation of Bombyx mori bidensovirus, a member of the family Bidnaviridae. Boxes indicate open reading frames as annotated on GenBank accession A: EU623082; B: EU623083.
Bidnaviridae taxonomy
Figure 2 Bidnaviridae. Relationships of the taxa connected to the family Bidnaviridae.

Derivation of names

Bidensovirus: from the name Bombyx mori bidensovirus

Bidnaviridae: from the Latin bi meaning "two" and DNA for deoxyribonucleic acid, referring to the segmented ssDNA genomes of viruses in the family; the suffix -viridae for family taxa