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J Bacteriol. 1972 March; 109(3): 1149-1155
Copyright © 1972 American Society for Microbiology. All Rights Reserved.
a Department of Bacteriology, RutgersThe State University, New Brunswick, New Jersey 08903
ABSTRACT
Nitrosomonas europaea, Nitrobacter agilis, Thiobacillus denitrificans, T. neapolitanus, and T. thioparus (all obligate autotrophic bacteria) have been grown in dialysis culture, on glucose salts media, in the absence of their specific inorganic energy source. Metabolic products for N. agilis grown on nitrite salts medium were identified as keto acids. Pyruvic acid inhibited this organism at 5 x 105M. Keto acids were not inhibitory for the thiobacilli grown on thiosulfate medium. However, when T. denitrificans was grown on glucose with dialysis, addition of 5 x 104M pyruvate inhibited growth. Thus, it appears pyruvate may be inhibitory for other autotrophs, as has been reported for T. thiooxidans.
1 Present address: Biology Department, 102 Guyot Hall, Princeton University, Princeton, N.J. 08903.
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