PMID: 9546171Apr 18, 1998Paper

Buffering capacity and membrane H+ conductance of neutrophilic and alkalophilic gram-positive bacteria

Applied and Environmental Microbiology
N Rius, J G Lorén

Abstract

Buffering capacity and membrane H+ conductance were examined in three gram-positive bacteria, Staphylococcus aureus, Bacillus subtilis, and Bacillus alcalophilus. An acid pulse technique was used to measure both parameters. The buffering capacity and membrane H+ conductance of B. alcalophilus are influenced by the pH of the medium and the culture conditions. Suspensions of B. alcalophilus cells from both H. A. medium and L-malate medium cultures grown at pH 10.5 exhibited higher values for these parameters than cells grown at pH 8.5. B. alcalophilus grown aerobically had a lower buffering capacity and a lower membrane conductance for protons than the neutrophilic bacteria S. aureus and B. subtilis. Fermenting cells exhibited significantly higher values for both variables than respiring cells.

References

Jun 1, 1976·Journal of Bacteriology·S H Collins, W A Hamilton
Oct 1, 1979·Journal of Bacteriology·P C Maloney
Jan 1, 1989·Annual Review of Microbiology·T A Krulwich, A A Guffanti
May 1, 1985·Journal of Bacteriology·T A KrulwichA A Guffanti
Jan 1, 1983·Advances in Microbial Physiology·T A Krulwich, A A Guffanti
Sep 1, 1993·Journal of Bacteriology·M A KemperR J Doyle
Jun 1, 1994·Applied and Environmental Microbiology·N RiusJ G Lorén

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Citations

Jan 4, 2003·Journal of Bacteriology·Karen OlssonGregory M Cook
Apr 6, 2011·Nature Reviews. Microbiology·Terry A KrulwichEtana Padan
Apr 4, 2000·International Journal of Food Microbiology·D LindsayA von Holy

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