Attribacteria - Atribacteria

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Domain : Bacteria
Wire : Attribacteria

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 CO 2 . These products in turn can withstand methanogenswithin the microbial community of sediments and explain the frequent occurrence of Atribacteria in anoxic sediments rich in methane. [ 1 ] [ 2 ] According to phylogenetic analyzes Atribacteria appears related to several thermophilic edges within Terrabacteria [ 3 ] or may be in the base Gracilicutes . [ 4 ]


  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.