Aquificae

{{Taxobox | color = lightgrey | name = Aquificae | regnum = Bacteria | phylum = Aquificae | classis = Aquificae | ordo = Aquificales | subdivision_ranks = Familia | subdivision =

• Aquificaceae
• Hydrogenothermaceae

}}

The Aquificae phylumis a diverse collection of bacteriathat live in harsh environmental settings. They have been found in hot springs, sulfer pools, thermal ocean vents. Members of the genus Aquifex, for example, are productive in water between 85 to 95 °C. They are the dominant members of most terrestrial neutral to alkaline hot springs above 60 degrees celsius. They are autotrophs, and are the primary carbon fixers in these environments. They are true bacteria (domaineubacteria) as opposed to the other inhabitants of extreme environments, the Archaea.

There is currently no consensus regarding the taxonomy of genera within Aquificae. One standard text[1]claims that only the genera Aquifex, Calderobacterium, Hydrogenobacter, and Thermocrinisbelong in the Aquificales order. Another claims that, in addition to genera within the Aquificaceaeand Hydrogenothermaceaefamilies, the following genera are incertae sedis(unclassified), but within Aquificae: Balnearium, Desulfurobacterium, EX-H1 group, and Thermovibrio.

External links and references

• Reysenbach A-L, Phylum BI (2001) Aquificae phy. nov. In: Boone DR, Castenholz RW (eds) Bergey?s Manual of Systematic Bacteriology. Springer-Verlag, Berlin, 2nd edn., pp. 359?367
• Eubacteria classificationfrom Iziko
• Taxonomic subtreefrom the Max Planck Society for the Advancement of Sciencees:Aquificae

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It uses material from the http://en.wikipedia.org/wiki/Aquificae Wikipedia article Aquificae.