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Comparative study of glutamate dehydrogenase and glutamine synthetase activities in the roots and aerial organs of an obligate halophyte suaeda maritima var macrocarpa and a glycophyte phaseolus vulgaris grown in presence of different concentrations of sodium chloride



Comparative study of glutamate dehydrogenase and glutamine synthetase activities in the roots and aerial organs of an obligate halophyte suaeda maritima var macrocarpa and a glycophyte phaseolus vulgaris grown in presence of different concentrations of sodium chloride



Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences Serie D Sciences Naturelles 289(7): 599-602



The glutamate dehydrogenase and glutamine synthetase activities of an obligate halophyte, S. maritima var. macrocarpa and a glycophyte, P. vulgaris are compared in function of salinity (increasing concentration of NaCl) of the culturing solution. In culture, addition of NaCl stimulates glutamine synthetase activity and lowers glutamate dehydrogenase activity in the aerial organs and in the roots of Suaeda as opposed to what is observed in the glycophyte. Hence the obligatory halophily of Suaeda is related to an increase of the glutamine synthetase activity in a salt-rich medium corresponding to the stimulation of nitrate reductase and proteogenesis.

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Accession: 005000436

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