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THE INFLUENCE OF AGE ON ENZYMATIC ADAPTATION IN MICROORGANISMS

THE INFLUENCE OF AGE ON ENZYMATIC ADAPTATION IN MICROORGANISMS Receive: RSS Feeds, eTOCs, free email alerts (when new articles cite this article), more» Information about commercial reprint orders: http://jb.asm.org/site/misc/reprints.xhtml To subscribe to to another ASM Journal go to: http://journals.asm.org/site/subscriptions/ THE IN MICROORGANISMS1 Department of Bacteriology, Indiana University, Bloomington, Indiana Received for publication March 4, 1952 Hegarty (1939) observed a marked shortening during physiological youth of the lag period required by Streptococcus lactis for carbohydrase adaptation, and concluded that the cell is best prepared during physiological youth for enzymatic adaptation. In view of the paucity of data on other microorganisms, Hegarty's results have been accepted as being applicable to many microorganisms (Gunsalus, 1951). However, during investigations on formic hydrogenlyase, we observed that the adaptability of Escherichia coli is greatest in cells harvested from the stationary period of growth rather than during physiological youth. Also, results with the nitrate reductase system of E. coli and adaptation of Pseudomonas fluorescens to the oxidation of benzoic and gluconic acids differ markedly from those of Hegarty and suggest a more general interpretation of the variation in adaptive ability during the growth cycle. METHODS Cell suspensions of E. coli, strain S, from yeast extract broth cultures of different ages were prepared as described http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Bacteriology American Society For Microbiology

THE INFLUENCE OF AGE ON ENZYMATIC ADAPTATION IN MICROORGANISMS

Journal of Bacteriology , Volume volume 64 (issue 3) – Sep 1, 1952

THE INFLUENCE OF AGE ON ENZYMATIC ADAPTATION IN MICROORGANISMS

Journal of Bacteriology , Volume volume 64 (issue 3) – Sep 1, 1952

Abstract

Receive: RSS Feeds, eTOCs, free email alerts (when new articles cite this article), more» Information about commercial reprint orders: http://jb.asm.org/site/misc/reprints.xhtml To subscribe to to another ASM Journal go to: http://journals.asm.org/site/subscriptions/ THE IN MICROORGANISMS1 Department of Bacteriology, Indiana University, Bloomington, Indiana Received for publication March 4, 1952 Hegarty (1939) observed a marked shortening during physiological youth of the lag period required by Streptococcus lactis for carbohydrase adaptation, and concluded that the cell is best prepared during physiological youth for enzymatic adaptation. In view of the paucity of data on other microorganisms, Hegarty's results have been accepted as being applicable to many microorganisms (Gunsalus, 1951). However, during investigations on formic hydrogenlyase, we observed that the adaptability of Escherichia coli is greatest in cells harvested from the stationary period of growth rather than during physiological youth. Also, results with the nitrate reductase system of E. coli and adaptation of Pseudomonas fluorescens to the oxidation of benzoic and gluconic acids differ markedly from those of Hegarty and suggest a more general interpretation of the variation in adaptive ability during the growth cycle. METHODS Cell suspensions of E. coli, strain S, from yeast extract broth cultures of different ages were prepared as described

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Publisher
American Society For Microbiology
Copyright
Copyright © 1952 by the American society for Microbiology.
ISSN
0021-9193
eISSN
1098-5530
Publisher site
See Article on Publisher Site

Abstract

Receive: RSS Feeds, eTOCs, free email alerts (when new articles cite this article), more» Information about commercial reprint orders: http://jb.asm.org/site/misc/reprints.xhtml To subscribe to to another ASM Journal go to: http://journals.asm.org/site/subscriptions/ THE IN MICROORGANISMS1 Department of Bacteriology, Indiana University, Bloomington, Indiana Received for publication March 4, 1952 Hegarty (1939) observed a marked shortening during physiological youth of the lag period required by Streptococcus lactis for carbohydrase adaptation, and concluded that the cell is best prepared during physiological youth for enzymatic adaptation. In view of the paucity of data on other microorganisms, Hegarty's results have been accepted as being applicable to many microorganisms (Gunsalus, 1951). However, during investigations on formic hydrogenlyase, we observed that the adaptability of Escherichia coli is greatest in cells harvested from the stationary period of growth rather than during physiological youth. Also, results with the nitrate reductase system of E. coli and adaptation of Pseudomonas fluorescens to the oxidation of benzoic and gluconic acids differ markedly from those of Hegarty and suggest a more general interpretation of the variation in adaptive ability during the growth cycle. METHODS Cell suspensions of E. coli, strain S, from yeast extract broth cultures of different ages were prepared as described

Journal

Journal of BacteriologyAmerican Society For Microbiology

Published: Sep 1, 1952

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