1887

Abstract

Addition of competence factor extracts to trigger competence in a culture of induced an increase in the intracellular pH and the Na content of the bacteria without any change in the K pool or in the membrane potential. These ionic shifts were concomitant with a stimulation of glycolysis that resulted in an enhanced ATP pool. Thus, in transforming conditions, at extracellular pH 7·8, competent bacteria presented a particularly high energetic state resulting from an increase in ∆pH and in the ATP pool, associated with an enhanced Na content. These features are discussed in the context of homeostasis regulation in response to an environmental stimulus.

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1989-08-01
2021-10-24
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