The Role of Glutamate Metabolism and the GABA Shunt in Bypassing the Tricarboxylic Acid Cycle in the Light.

Glutamate is an essential amino acid in both the energy and biosynthetic processes in plant cells. The aim of this work was to study changes in glutamate metabolism upon irradiation of maize ( L.) leaves with light of different spectral compositions, as well as to identify mechanisms regulating the work of enzymes involved in the studied process.

Biochemical and Epigenetic Regulation of Glutamate Metabolism in Maize ( L.) Leaves under Salt Stress.

The effect of salt stress (150 mM NaCl) on the expression of genes, methylation of their promoters, and enzymatic activity of glutamate dehydrogenase (GDH), glutamate decarboxylase (GAD), and the 2-oxoglutarate (2-OG)-dehydrogenase (2-OGDH) complex was studied in maize ( L.). GDH activity increased continuously under salt stress, being 3-fold higher after 24 h.