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Appl Environ Microbiol. 1974 July; 28(1): 129-132
Copyright © 1974 American Society for Microbiology. All Rights Reserved.

Physiology of Sporeforming Bacteria Associated with Insects: Radiorespirometric Survey of Carbohydrate Metabolism In the 12 Serotypes of Bacillus thuringiensis

Northern Regional Research Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Peoria, Illinois 61604

ABSTRACT

Radiorespirometry was used to compare the primary pathways of glucose catabolism in 18 strains of Bacillus thuringiensis representing the 12 established serotypes. Every strain utilizes the Embden-Meyerhof-Parnas pathway almost exclusively; pentose-phosphate pathway participation is minor. The Embden-Meyerhof-Parnas pathway predominates regardless of whether the cells were grown in a minimal medium or one containing yeast extract. The results indicate that the absolute requirement for citrate and related compounds is not a result of defective citrate or glucose transport and metabolism.

¹ Present address: Department of Plant Pathology, University of Nebraska, Lincoln, Neb. 68503.

² Present address: U.S. Grain Marketing Research Center, 1515 College Ave., Manhattan, Kan. 66502.