Atribacteria

Atribacteria is a candidate phylum of bacteria, which are common in anoxic sediments rich in methane. It was previously known as a candidate edge OP9 or JS1. 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 CO2. These products in turn can support methanogens within the sediment microbial community and explain the frequent occurrence of Atribacteria in methane-rich anoxic sediments.[1][2] According to phylogenetic analysis Atribacteria appears to be related to several thermophilic phyla within Terrabacteria[3] or may be in the base of Gracilicutes.[4]

Atribacteria
Scientific classification
Domain:
Bacteria
Superphylum:
Terrabacteria
Phylum:
Atribacteria

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.


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