Comparative study of catalase, pyruvate kinase, oxaloacetate decarboxylase, NAD-malate dehydrogenase activities in leaves and activity of H+ pumps ın roots of common bean plants exposed to salt stress

Abstract

Activities of NAD-malate dehydrogenase (NAD-MDH, EC 1.1.1.37), oxaloacetate decarboxylase (OAD, EC 4.1.1.3), pyruvate kinase (PK, EC 2.7.1.40), catalase (CAT, EC 1.11.1.6) involved in the metabolism of dicarbon acids such as malate and oxaloacetate (OA) in leaves of common bean (Phaseolus vulgaris L.) plants exposed to salt stress and activity of H+ pumps related to the mineral nutrition in the root cell system have been studied comparatively. It has been established that these enzymes acting in concert play an important role in maintaining the constant energy balance and creating stress tolerance of the organism by the regulation of the metabolic processes at various concentrations of NaCl.