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KMID : 0880220090470010050
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Journal of Microbiology
2009 Volume.47 No. 1 p.50 ~ p.59
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Induction of Growth Phase-Specific Autolysis in Bacillus subtilis 168 by Growth Inhibitors
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Chung Jin-Kyo
Yoon Hyun-Ee
Shin Ha-Chul
Choi Eun-Young
Byeon Woo-Hyeon
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Abstract
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Growth phase-specific autolysis of Bacillus subtilis by inhibitors of membrane permeability, inhibitors of macromolecule biosynthesis, inhibitors of cell wall biosynthesis and detergents were tested and characterized in glucose limited liquid medium. The minimum autolysis induction concentration (MAIC) of test compounds, which was at least 1/20th lower than the conventional autolysis induction concentration, induced autolysis only for cells at the glucose exhaustion point (diauxic point) of the growth phase, while it was not induced for cells at pre- and post-diauxic points. Inhibitors of macromolecule synthesis that are not known for inducing autolysis, such as chloramphenicol, rifampicin, nalidixic acid, and detergents, also induced specific autolysis. Two types of autolysis corresponding to the concentrations of compounds are distinguished: concentration-sensitive and concentration-insensitive types.
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KEYWORD
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autolysis, B. subtilis 168, diauxic point
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