Abstract
Rhizobium Sp. UMKL 20 responded to increased sodium chloride concentration in the medium by elevating the intracellular concentrations of K+ and glutamate. Increases in K+ occurred in a time course synchronous with glutamate. Addition of the uncoupler 2,4-dinitrophenol, significantly reduced K+ uptake but had little effect on glutamate accumulation. New protein synthesis did not appear to be required for the stimulation of K+ uptake by NaCl. Assays of enzymes involved in glutamate synthesis showed that under salt-stress conditions, increased activities of glutamine synthetase and glutamate synthase were detected, indicating that the GS/GOGAT pathway is the major pathway for increasing intracellular glutamate concentration.
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Yap, S.F., Lim, S.T. Response of Rhizobium sp. UMKL 20 to sodium chloride stress. Arch Microbiol 135, 224–228 (1983). https://doi.org/10.1007/BF00414484
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DOI: https://doi.org/10.1007/BF00414484