Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1696086 | Applied Clay Science | 2009 | 4 Pages |
Abstract
Knowledge of the impacts of clay minerals on microorganisms is essential to a complete understanding of microbially-mediated processes. Information available in this regard remains scarce. Using Escherichia coli (E. coli) as a model bacterium, we investigated the effect of kaolinite on various growth parameters. This clay mineral significantly affected maximal growth rate and yield of the E. coli-strain (MG 1655) in minimum growth medium with 0.2% glucose, at an optimal concentration of 0.2 to 0.5 g/l. These physiological modifications were related to a decrease in catabolic activity and increased acetate assimilation via an energy transfer from acetate degradation to cell division rather than maintenance.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geochemistry and Petrology
Authors
Elise Courvoisier, Sam Dukan,