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Effect of nalidixic acid on sporulation of catabolite-resistant mutants ofBacillus subtilis

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Abstract

A number ofBacillus subtilis mutants that are able to sporulate in the presence of relatively high concentrations of carbon sources have been isolated in our laboratory. The present study shows that some of the mutants are also able to sporulate in the presence of nalidixic acid (Nal) under the condition where sporulation of wild-type strains is inhibited. Furthermore, it has been found that a Nal-resistant mutant is unable to sporulate normally when Nal (40 μg/ml) or glucose (55 mM) is present. Since the adverse effect of Nal on inducible enzymes is eliminated when bacterial strains carry a Nal-resistance marker, the above result suggests that the effect of this drug on sporulation might be mediated by a unique mechanism.

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  1. Department of Biology, McMaster University, L8S 4K1, Hamilton, Ontario, Canada

    Iwao Takahashi

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  1. Iwao Takahashi
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Takahashi, I. Effect of nalidixic acid on sporulation of catabolite-resistant mutants ofBacillus subtilis . Current Microbiology 4, 159–161 (1980). https://doi.org/10.1007/BF02602821

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