Picrophilus

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iPicrophilus
Scientific classification
Kingdom: Archaea
Phylum: Euryarchaeota
Class: Thermoplasmata
Order: Thermoplasmatales
Family: Picrophilaceae
Genus: Picrophilus
Species

P. oshimae Schleper et al., 1996
P. torridus Schleper et al., 1996

The genus Picrophilus is an extremely acidophilic genus within the Euryarchaeota consisting of two species: P. oshimae and P. torridus. These microbes are the most acidiphilic organisms currently known, with the ability to survive at a pH of -0.06. They are obligate acidophiles and are unable to maintain their membrane integrety at pH's higher than 4. While phylogenetically related to other organisms within the Thermoplasmata, unlike Thermoplasma and Ferroplasma Picrophilus contains an S-layer cell wall.

[edit] Reference

  • Madigan, M.T. and Martinko, J.M. (2005). Brock Biology of Microorganisms, 11th Ed.. Pearson Prentice Hall.
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