The Dynamics of Some Carbon and Nitrogen Metabolism Enzymes in Daytime in Various Wheat Genotypes during Drought

PEPC plays a pivotal role in various metabolic processes in C3 plants including by providing intermediates for the Krebs cycle, maintaining intracellular pH and osmotic pressure, regulating the movement of stomatal guard cells, refixing CO2 formed by respiration, forming a carbon skeleton for lipid synthesis during grain development and nitrogen assimilation. Aspartate aminotransferase is essential to primary nitrogen assimilation, the transportation of reducing equivalents and the exchange of carbon and nitrogen resources among cellular subcompartments. Durum (Barakatli 95 and Garagylchyg 2) and bread wheat genotypes (Gobustan and Tale 38) cultivated in the experimental field of the Research Institute of Crop Husbandry were used as study materials. The high level of activity of PEPC and NAD-MDH during morning hours and a positive correlation between them in daytime suggest that, functioning mutually, these enzymes participate in the biosynthesis of malic acid