Bacilladnaviridae

Bacilladnaviridae
Virus classification
(unranked):	Virus
Realm:	Monodnaviria
Kingdom:	Shotokuvirae
Phylum:	Cressdnaviricota
Class:	Arfiviricetes
Order:	Baphyvirales
Family:	Bacilladnaviridae

Bacilladnaviridae is a family of single-stranded DNA viruses that primarily infect diatoms. ^{[1] [2]}

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. ^{[3] [4]}

Taxonomy

The following genera are recognized: ^[5]

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

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.

External links

• Yuji Tomaru, Kensuke Toyoda, Hidekazu Suzuki, Tamotsu Nagumo, Kei Kimura & Yoshitake Takao: New single-stranded DNA virus with a unique genomic structure that infects marine diatom Chaetoceros setoensis. In: Nature Sci Rep 3, 3337. 26 November 2013. doi:10.1038/srep03337. Proposal of new species "Chaetoceros setoensis DNA virus" (CsetDNAV), ssDNA circular.