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Recovery of exponentially growing cultures of Klebsiella pneumoniae NCIB 418 after heat shocks

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Abstract

Exponentially growing cultures of Klebsiella pneumoniae were subjected to heat shocks in the superoptimal and supermaximal temperature ranges for growth on glucose in a defined mineral salts medium. Transitory changes in the specific growth rate constant during recovery were evident. The response was heat shock temperature and exposure time dependent. Cell viability determinations, based on colony counts, indicated complete recovery from heat treatments at superoptimal temperatures. In contrast, at supermaximal temperatures, discrepancies in colony counts on different agars were observed. The kinetic response of the specific growth rate constant after a heat shock at supermaximal temperatures is explained by segregation within the bacterial population

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Authors and Affiliations

  1. Institut für Biotechnologie, Eidgenössische Technische Hochschule, Überlandstrasse 133, CH-8600, Dübendorf, Switzerland

    A. Heitzer & G. Hamer

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  1. A. Heitzer
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  2. G. Hamer
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Heitzer, A., Hamer, G. Recovery of exponentially growing cultures of Klebsiella pneumoniae NCIB 418 after heat shocks. Arch. Microbiol. 153, 272–275 (1990). https://doi.org/10.1007/BF00249081

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  • DOI: https://doi.org/10.1007/BF00249081

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