The EFFECT OF SALT STRESS ON THE CATALYTIC ACTIVITY OF Γ-Hydroxybutyrate DEHYDROGENASE IN THE LEAVES OF MAIZE ZEA MAYS L.

Abstract

Soil salinity is one of the main problems in agriculture, and it has a significant impact on the growth and development of agricultural crops. High salt content in the soil leads to increased osmotic pressure, which hinders the uptake of water and nutrients by the plant. This leads to changes in plant metabolism, in particular, disrupting the functioning of the Krebs cycle, which is the main source of energy for plant growth. In addition, soil salinity affects the functioning of the GABA-shunt, which plays an important role in regulating stress responses in plants. The enzyme γ-hydroxybutyratedehydrogenase (GBDH) plays an important role in the adaptation of plants to abiotic stresses. Unfortunately, the functioning of this enzyme in plant cells is still poorly understood. Therefore, we studied the effect of salt stress on the enzymatic activity of GBDH in the leaves of corn seedlings. It was shown that salt stress induces GBDH activity in the leaves of corn starting from the first hour of incubation in the stressful environment.