Aquificales
| Aquificales | ||||||||||
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Electron microscope image of venous vibrio stagnispumantis cells |
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| Systematics | ||||||||||
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| Scientific name of the class | ||||||||||
| Aquificae | ||||||||||
| Reysenbach 2002 | ||||||||||
| Scientific name of the order | ||||||||||
| Aquificales | ||||||||||
| Reysenbach 2002 emend. L'Haridon et al. 2006 |
The Aquificales , the only order of the Aquificae class , are a group of bacteria that exist under particularly extreme conditions. They are found in hot springs, sulfur pools, and in oceanic areas where geothermal heat escapes. Species of the genus Aquifex live z. B. at water temperatures between 85 and 95 ° C . The aquificales are the most common living things in neutral to alkaline hot springs above 60 ° C. They are autotrophic and bind a lot of carbon.
features
The thermophilic , gram-negative rods are between 0.2 and 6 µm in size. Under certain growing conditions, they can also grow filamentous. No spores are formed. Typical of the whole order is its chemolithotrophic way of life under strictly anaerobic or microaerophilic conditions. All known isolates have their optimum growth at 70 ° C and above; they have been detected both in terrestrial hot springs and in black and white smokers at the bottom of the deep sea. The type genus is Aquifex .
Systematics
The establishment of an order of the aquificales was 1992 by Huber et al. proposed, the order was then described by Reysenbach in 2001 and validly published in 2002. 2006 then there was a emendation of L'Haridon et al.
The following is a list of the orders, families and their respective genera:
- Class: Aquificae Reysenbach 2002
- Order: Aquificales Reysenbach 2002
- Family: Aquificaceae Reysenbach 2002
- Genus: Aquifex Huber & Stetter 1992
- Genus: Hydrogenivirga Nakagawa et al. 2004
- Genus: Hydrogenobacter Kawasumi et al. 1984
- Genus: Hydrogenobaculum Stöhr et al. 2001
- Genus: Thermocrinis Huber et al. 1999
- Family: Desulfurobacteriaceae L'Haridon et al. 2006
- Genus: Balnearium Takai et al. 2003
- Genus: Desulfurobacterium L'Haridon et al. 1998
- Genus: Phorcysia Pérez-Rodríguez et al. 2012
- Genus: Thermovibrio Huber et al. 2002
- Family: Hydrogenothermaceae Eder & Huber 2003
- Genus: Hydrogenothermus Stöhr et al. 2001
- Genus: Persephonella Götz et al. 2002
- Genus: Sulfurihydrogenibium Takai et al. 2003
- Genus: Venenivibrio Hetzer et al. 2008
- Family: Aquificaceae Reysenbach 2002
- Order: Aquificales Reysenbach 2002
The genus Thermosulfidibacter has not yet been assigned to any family (as of October 15, 2018).
swell
- ^ Jean P. Euzéby, Aidan C. Part: Phylum "Aquificae". In: List of Prokaryotic names with Standing in Nomenclature ( LPSN ). Retrieved October 15, 2018 .
literature
- S. L'Haridon, A.-L. Reysenbach, BJ Tindall, P. Beauty, A. Banta, U. Johnsen, P. Schumann, A. Gambacorta, E. Stackebrandt and C. Jeanthon 2006: Desulfurobacterium atlanticum sp. nov., Desulfurobacterium pacificum sp. nov. and Thermovibrio guaymasensis sp. nov., three thermophilic members of the Desulfurobacteriaceae fam. nov., a deep branching lineage within the Bacteria. International Journal of Systematic and Evolutionary Microbiology 56. 2843-2852. Full text
- Bergey's Manual of Systematic Bacteriology, Volume One: The Archaea and the Deeply Branching and Phototrophic Bacteria. Springer-Verlag, New York 2001, ISBN 0-387-98771-1 .
Web links
- http://www.tolweb.org/Aquificae/2285
- JP Euzéby: List of Prokaryotic names with Standing in Nomenclature - Order Aquificales