[Comparison 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 concentration of NaCl].
The glutamate dehydrogenase and glutamine synthetase activities of an obligate halophyte, Suaeda maritima var. macrocarpa and a glycophyte. Phaseolus vulgaris are compared in function of salinity (increasing concentrations of NaCl) of the culturing solution. In culture, addition of NaCl stimulates glutamine synthetase activity and lowers glutamine 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 sal-trich medium corresponding to the stimulation of nitrate reductase and proteogenesis.
D005969:Glutamate Dehydrogenase / Q000378:metabolism*; D005974:Glutamate-Ammonia Ligase / Q000378:metabolism*; D007700:Kinetics; D010944:Plants / Q000201:enzymology*; D012965:Sodium Chloride / Q000494:pharmacology*; D013045:Species Specificity
D012965:Sodium Chloride; D005969:Glutamate Dehydrogenase; D005974:Glutamate-Ammonia Ligase
Etude comparée des activités glutamate déshydrogénasique et glutamine synthétasique dans le racines et les parties aériennes d'un halophyte obligatoire: le Suaeda maritima var. macrocarpa et d'un glycophyte: le Phaseolus vulgaris, cultivés en présence de différentes concentrations en NaCl.