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Osmoregulatory Properties of Azospirillum spp

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Azospirillum IV

Summary

Within the genus Azospirillum, the osmotolerance increased in the order A. amazonense, A. lipoferum, A. brasilense, A. halopraeferens. A. halopraeferens specifically required sodium ions (10 mM) for growth. A. brasilense and A. halopraeferens utilized amino acids (such as glutamate and proline) poorly, glycine betaine and choline not at all as nitrogen and carbon sources. At osmotic stress conditions, growth and nitrogen fixation of A. brasilense and A. halopraeferens were stimulated by low concentrations of glycine betaine and choline. A high affinity uptake scavenged these osmoprotective substances from the environment and caused their intracellular accumulation. Spontaneous mutants of A. brasilense Sp 7, resistant to the proline analogue 3,4-dehydroproline, were more osmotolerant as compared to the wild type.

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Authors and Affiliations

  1. Lehrstuhl für Mikrobiologie, Universität Bayreuth, Universitätsstraße 30, D-8580, Bayreuth, Germany

    Anton Hartmann

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  1. Anton Hartmann
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Editors and Affiliations

  1. Lehrstuhl für Genetik, Universität Bayreuth, Universitätsstraße 30, 8580, Bayreuth, Germany

    Walter Klingmüller

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© 1988 Springer-Verlag Berlin Heidelberg

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Hartmann, A. (1988). Osmoregulatory Properties of Azospirillum spp. In: Klingmüller, W. (eds) Azospirillum IV. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-73072-6_16

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  • DOI: https://doi.org/10.1007/978-3-642-73072-6_16

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-73074-0

  • Online ISBN: 978-3-642-73072-6

  • eBook Packages: Springer Book Archive

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