Article · Wikipedia archive · Last revised Aug 10, 2026

Bacilladnaviridae

Bacilladnaviridae is a family of single-stranded DNA viruses that primarily infect diatoms.

Last revised
Aug 10, 2026
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Bacilladnaviridae
Virus classification Edit this classification
(unranked): Virus
Realm: Floreoviria
Kingdom: Shotokuvirae
Phylum: Cressdnaviricota
Class: Arfiviricetes
Order: Baphyvirales
Family: Bacilladnaviridae

Bacilladnaviridae is a family of single-stranded DNA viruses that primarily infect diatoms.12

Characteristics

Genome map of species Chaetoceros protobacilladnavirus 2 of family Bacilladnaviridae

Similar to other eukaryotic ssDNA viruses, bacilladnaviruses are likely to replicate their genomes by the rolling-circle mechanism, initiated by the virus-encoded endonuclease (Rep). However, the latter protein of bacilladnaviruses displays unique conserved motifs and in phylogenetic trees forms a monophyletic clade separated from other groups of ssDNA viruses. The capsid protein of bacilladnaviruses has the jelly-roll fold and is most closely related to the corresponding proteins from members of the family Nodaviridae, which have ssRNA genomes.34

Taxonomy

The following genera are recognized:5

  • Aberdnavirus
  • Diatodnavirus
  • Keisodnavirus
  • Kieseladnavirus
  • Protobacilladnavirus
  • Puahadnavirus
  • Seawadnavirus
References

References

  1. "Virus Taxonomy: 2019 Release". talk.ictvonline.org. International Committee on Taxonomy of Viruses. Retrieved 25 April 2020.
  2. Tomaru, Y; Takao, Y; Suzuki, H; Nagumo, T; Koike, K; Nagasaki, K (2011). "Isolation and Characterization of a Single-Stranded DNA Virus Infecting Chaetoceros lorenzianus Grunow". Applied and Environmental Microbiology. 77 (15): 5285–5293. Bibcode:2011ApEnM..77.5285T. doi:10.1128/AEM.00202-11. PMC 3147440. PMID 21666026.
  3. Kazlauskas, D; Dayaram, A; Kraberger, S; Goldstein, S; Varsani, A; Krupovic, M (2017). "Evolutionary history of ssDNA bacilladnaviruses features horizontal acquisition of the capsid gene from ssRNA nodaviruses". Virology. 504: 114–121. doi:10.1016/j.virol.2017.02.001. PMID 28189969.
  4. Munke, A; Kimura, K; Tomaru, Y; Wang, H; Yoshida, K; Mito, S; Hongo, Y; Okamoto, K (20 July 2022). "Primordial Capsid and Spooled ssDNA Genome Structures Unravel Ancestral Events of Eukaryotic Viruses". mBio. 13 (4): e0015622. doi:10.1128/mbio.00156-22. PMC 9426455. PMID 35856561.
  5. "Virus Taxonomy: 2024 Release". International Committee on Taxonomy of Viruses. Retrieved 5 March 2025.
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