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J Bacteriol, July 1998, p. 3730-3733, Vol. 180, No. 14
0021-9193/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.

General Stress Transcription Factor sigma B and Sporulation Transcription Factor sigma H Each Contribute to Survival of Bacillus subtilis under Extreme Growth Conditions

Tatiana A. Gaidenko and Chester W. Price*

Department of Food Science and Technology, University of California, Davis, California 95616

Received 25 November 1997/Accepted 12 May 1998

The general stress response of the bacterium Bacillus subtilis is controlled by the sigma B transcription factor. Here we show that loss of sigma B reduces stationary-phase viability 10-fold in either alkaline or acidic media and reduces cell yield in media containing ethanol. We further show that loss of the developmental transcription factor sigma H also has a marked effect on stationary-phase viability under these conditions and that this effect is independent from the simple loss of sporulation ability.

* Corresponding author. Mailing address: Department of Food Science and Technology, University of California, Davis, CA 95616. Phone: (530) 752-1596. Fax: (530) 752-4759. E-mail: cwprice{at}ucdavis.edu.

J Bacteriol, July 1998, p. 3730-3733, Vol. 180, No. 14
0021-9193/98/$04.00+0
Copyright © 1998, American Society for Microbiology. All rights reserved.


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