1887

Abstract

Miconazole at 10 g ml inhibited the growth of exponential phase cultures of and released intracellular K. Higher concentrations of miconazole were, however, required to cause cell death: at neutral pH, complete killing occurred at 30 g ml, while at pH 30 or 45, there was only partial killing with miconazole up to 80 g ml. Efficient killing of by miconazole occurred both at low temperature and when cells were incubated in buffer alone. It is proposed that both the fungistatic and fungicidal actions of miconazole are due to its direct interaction with the cellular membranes of rather than to an inhibition of biochemical reactions. Divalent cations protected from both the fungistatic and fungicidal effects of miconazole and this was probably due to a competition between the ions and miconazole in its positively charged form for negatively charged binding sites. increased in resistance to miconazole-induced K release during the stationary phase of a batch culture. Development of this resistance required efficient aeration.

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1980-07-01
2021-05-11
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