Atribacterota Explained

Atribacterota is a phylum of bacteria, which are common in anoxic sediments rich in methane. They are distributed worldwide and in some cases abundant in anaerobic marine sediments, geothermal springs, and oil deposits. Genetic analyzes suggest a heterotrophic metabolism that gives rise to fermentation products such as acetate, ethanol, and . These products in turn can support methanogens within the sediment microbial community and explain the frequent occurrence of Atribacterota in methane-rich anoxic sediments.^{[1] [2]} According to phylogenetic analysis, Atribacterota appears to be related to several thermophilic phyla within Terrabacteria^[3] or may be in the base of Gracilicutes.^[4] According to research, Atribacterota shows patterns of gene expressions which consists of fermentative, acetogenic metabolism. These expressions let Atribacterota to be able to create catabolic and anabolic functions which are necessary to generate cellular reproduction, even when the energy levels are limited due to the depletion of dissolved oxygen in the areas of sea waters, fresh waters, or ground waters.^[5]

Taxonomy

National Center for Biotechnology Information (NCBI)^[6] taxonomy and List of Prokaryotic names with Standing in Nomenclature (LPSN)^[7] were used as the primary taxonomic authority for establishing naming priorities. Also Annotree website,^[8] which uses the GTDB release 06-RS202.^[9] was consulted.

• Class Atribacteria Katayama et al. 2021
  • Order Atribacterales Katayama et al. 2021
    • Family Atribacteraceae Katayama et al. 2021
      • Genus Atribacter Katayama et al. 2021
        • Species A. laminatus Katayama et al. 2021
    • Family "Caldatribacteriaceae"
      • Genus "Candidatus Caldatribacterium" Dodsworth et al. 2013
        • Species "Ca. C. californiense" corrig. Dodsworth et al. 2013
        • Species "Ca. C. saccharofermentans" Dodsworth et al. 2013

See also

• List of bacterial orders
• List of bacteria genera

Notes and References

1. Nobu, M. K., Dodsworth, J. A., Murugapiran, S. K., Rinke, C., Gies, E. A., Webster, G., ... & Jørgensen, B. B. (2016) Phylogeny and physiology of candidate phylum 'Atribacteria' (OP9/JS1) inferred from cultivation-independent genomics. The ISME journal, 10(2), 273-286.
2. Carr, S. A., Orcutt, B. N., Mandernack, K. W., & Spear, J. R. (2015). Abundant Atribacteria in deep marine sediment from the Adélie Basin, Antarctica. Frontiers in microbiology, 6.
3. Christian Rinke et al 2013. Insights into the phylogeny and coding potential of microbial dark matter. Nature Volume: 499, Pages: 431–437 doi:10.1038/nature12352
4. Hug, L. A. et al. 2016, A new view of the tree of life. Nature Microbiology, 1, 16048.
5. Vuillemin. Aurèle. Vargas. Sergio. Coskun. Ömer K.. Pockalny. Robert. Murray. Richard W.. Smith. David C.. D’Hondt. Steven. Orsi. William D.. 2020-07-11. Atribacteria reproducing over millions of years in the Atlantic abyssal subseafloor. mBio. 11 . 5 . 10.1128/mbio.01937-20. 10.1101/2020.07.10.198200 . 33024037 . 7542362 . free.
6. Web site: Sayers. et al.. Atribacterota . 2021-03-20 . National Center for Biotechnology Information (NCBI) taxonomy database.
7. Web site: J.P. Euzéby . Atribacterota . List of Prokaryotic names with Standing in Nomenclature (LPSN). 2021-06-27 .
8. Mendler. K. Chen. H. Parks. DH. Hug. LA. Doxey. AC. 2019. AnnoTree: visualization and exploration of a functionally annotated microbial tree of life. Nucleic Acids Research. 47. 9. 4442–4448. 10.1093/nar/gkz246. 31081040. 6511854. free. 2021-07-15. 2021-04-23. https://web.archive.org/web/20210423133902/http://annotree.uwaterloo.ca/app/. dead.
9. Web site: GTDB release 06-RS202 . Genome Taxonomy Database.