Desulfobacterales
| Desulfobacterales | |
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| Stromatolites next to a volcanic lake, found to harbor abundant Desulfobacterales | |
| Scientific classification | |
| Domain: | |
| Phylum: | |
| Class: | Waite et al. 2020
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| Order: | Desulfobacterales Kuever, Rainey & Widdel 2006
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| Families | |
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Desulfobacterales are an order of sulfate-reducing bacteria within the phylum Thermodesulfobacteria.[1] The order contains three families; Desulfobacteraceae, Desulfobulbaceae, and Nitrospinaceae.[2] The bacterium in this order are strict anaerobic respirators, using sulfate or nitrate as the terminal electron acceptor instead of oxygen. Desulfobacterales can degrade ethanol, molecular hydrogen, organic acids, and small hydrocarbons.[3][4] The bacterium of this order have a wide ecological range and play important environmental roles in symbiotic relationships and nutrient cycling.
Habitat
Desulfobacterales are found globally and often in extreme environments, such as deep-sea hydrothermal vents, hot springs, marine sediment, and solfataric fields, an area of volcanic venting that gives off sulfurous gases.[5][6]
Symbiotic relationships
Sulfate-reduction by Desulfobacteraceae and Desulfobulbaceae in coastal marine sediments plays an important role in molecular hydrogen cycling through a close relationship with fermenting microorganisms.[7] Fermenting microbes break down organic materials on the seafloor and produce molecular oxygen and organic acids. Molecular hydrogen is an essential electron donor used by Desulfobacterales; they use the molecular hydrogen produced by fermentation to drive sulfate reduction. This feedback loop maintains molecular hydrogen at an energetically favorable level for fermenting respiration and provides ample molecular hydrogen for sulfate reduction.[7]
Nitrogen cycling
Human activity, such as increased fertilizer use, has caused
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[10] and National Center for Biotechnology Information (NCBI)[11]
| 16S rRNA based | 120 marker proteins based GTDB 08-RS214[15][16][17] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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See also
References
- S2CID 226257730.)
{{cite journal}}: CS1 maint: numeric names: authors list (link - ^ "ITIS - Report: Desulfobacterales". www.itis.gov. Retrieved 2022-10-02.
- ISBN 978-0-12-814849-5, retrieved 2022-11-06
- PMID 29177812.
- ^ "solfatara | geology". www.britannica.com. Retrieved 2022-11-06.
- PMID 21856405.
- ^ S2CID 44713600.
- PMID 16781774.
- ^ S2CID 231641138.
- ^ A.C. Parte; et al. "Desulfobacterales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2023-09-09.
- ^ Sayers; et al. "Desulfobacterales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2023-09-09.
- ^ "The LTP". Retrieved 20 November 2023.
- ^ "LTP_all tree in newick format". Retrieved 20 November 2023.
- ^ "LTP_08_2023 Release Notes" (PDF). Retrieved 20 November 2023.
- ^ "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
- ^ "bac120_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
- ^ "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.
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