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J Bacteriol. 1962 February; 83(2): 395-399
Copyright © 1962, The Williams & Wilkins Company. All Rights Reserved.

GERMINATION PROPERTIES OF SPORES WITH LOW DIPICOLINIC ACID CONTENT

^a Department of Bacteriology, University of Wisconsin, Madison, Wisconsin

ABSTRACT

KEYNAN, A. (University of Wisconsin, Madison), W. G. MURRELL, AND H. O. HALVORSON. Germination properties of spores with low dipicolinic acid content. J. Bacteriol. 83:395–399. 1962.—When the dipicolinic acid content of spores of Bacillus cereus strain T is reduced from 7.5 to 2 or 3%, the spores germinate spontaneously after heat activation and are sluggish in their response to L-alanine and other germination agents. Only germination initiated by calcium dipicolinic acid is unaffected. L-Alanine-induced germination is stimulated by exogenous dipicolinic acid. These results support the hypothesis that endogenous dipicolinic acid regulates the L-alanine-triggered germination.

¹ Present address: Israel Institute of Biological Sciences, Ness-Ziona, Israel.

² Present address: Commonwealth Industrial and Scientific Research Organisation, Homebush, Australia.

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