Abstract
Different types of halophilic bacteria adapt to their environment in different ways. Some moderately halophilic eubacteria can grow in a wide range of NaCl concentrations. This report deals with studies on the truly intracellular concentrations of sodium ions and compatible solutes in two such organisms. It discusses the problems involved in making such measurements, and their interpretation. As a rough estimate, it is suggested that the ‘true’ intracellular environment may balance about 60–80% of the extracellular solute concentration. A suggestion is also made, on the basis of this and earlier work, that haloadaptation in these organisms may have a discontinuous character. There is evidence that more profound changes in cellular properties occur in adaptation to NaCl concentrations above 2 M than in those up to 2 M.
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Kogut, M. (1991). The ‘True’ Intracellular Environment of Moderately Halophilic Eubacteria. In: Rodriguez-Valera, F. (eds) General and Applied Aspects of Halophilic Microorganisms. NATO ASI Series, vol 201. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3730-4_26
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DOI: https://doi.org/10.1007/978-1-4615-3730-4_26
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