Family: Rudiviridae (interim Report)

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

Edited by: Mart Krupovic
Posted: April 2023


The family Rudiviridae includes lytic, double-stranded DNA viruses infecting hyperthermophilic archaea of the order Sulfolobales (Table 1.Rudiviridae). The family was assigned to the realm Adnaviria in 2021 (Master Species List 36).

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

ExampleSulfolobus islandicus rod-shaped virus 2 (AJ344259), species Icerudivirus SIRV2, genus Icerudivirus
VirionFilamentous, non-enveloped particle, nucleoprotein core with homodimeric major capsid proteins, terminal fibers
GenomeLinear, double-stranded DNA genome of 20–36 kbp
Host rangeHyperthermophilic archaea of the order Sulfolobales
TaxonomyRealm Adnaviria, kingdom Zilligvirae, phylum Taleaviricota, class Tokiviricetes, order Ligamenvirales: 7 genera and 17 species
Rudiviridae genome
Figure 1.Rudiviridae. Genome organisation of a member of the family Rudiviridae. Boxes indicate open reading frames as annotated on GenBank accession AJ344259.
Rudiviridae taxonomy
Figure 2.Rudiviridae. Relationships of the taxa connected to the family Rudiviridae.

Derivation of name

Rudiviridae: from the Latin rudi, meaning "small rod".