Alkaliphile

Alkaliphiles are microbes classified as extremophiles that thrive in alkaline environments with a pH of 9 to 11 such as playa lakes and carbonate-rich soils. To survive, alkaliphiles maintain a relatively low alkaline level of about 8 pH inside their cells by constantly pumping hydrogen ions (H⁺) in the form of hydronium ions (H₃O⁺) across their cell membranes into their cytoplasm.

Examples include:

• Geoalkalibacter ferrihydriticus^[1]
• Bacillus okhensis ^[2]
• Alkalibacterium iburiense^[3]

See also

• Neutrophile

References

1. ^ Zavarzina DG; Kolganova TV; Bulygina ES; Kostrikina NA; Turova TP; Zavarzin GA. (Nov-Dec 2006). "Geoalkalibacter ferrihydriticus gen. nov., sp. nov., the first alkaliphilic representative of the family Geobacteraceae, isolated from a soda lake". Mikrobiologiia 75 (6): 775–85. PMID 17205802. 
2. ^ Nowlan B; Dodia MS; Singh SP; Patel BK. (May 2006). "Bacillus okhensis sp. nov., a halotolerant and alkalitolerant bacterium from an Indian saltpan". Int J Syst Evol Microbiol. 56 (Pt 5): 1073–7. doi:10.1099/ijs.0.63861-0. PMID 16627657. 
3. ^ Nakajima K; Hirota K; Nodasaka Y; Yumoto I (July 2005). "Alkalibacterium iburiense sp. nov., an obligate alkaliphile that reduces an indigo dye". Int J Syst Evol Microbiol. 55 (Pt 4): 1525–30. doi:10.1099/ijs.0.63487-0. PMID 16014476. 

External links

• http://library.thinkquest.org/CR0212089/alk.htm

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