Expression Analysis of Trehalose Biosynthesis Gene under Drought Stress in Wheat

Abstract

Trehalose is a glucose dimer and has been detected in a number of organisms. During physiological stress conditions such as salinity and desiccation, it functions as a complete protectant. Although trehalose biosynthesis has been observed in higher plants, the details of its physiological functions and the regulation of its pathways remain unknown. In recent years, however, a growing consensus has emerged that trehalose plays a role in plant growth and metabolism, as well as in tolerance against abiotic and biotic stresses. Recent data have revealed that trehalose is not just a protective sugar, but a multifunctional molecule, as it acts as a signaling molecule and impacts many pathogenic microorganisms and the infectivity of several others. Trehalose is both biosynthesized and applied exogenously. It increases the tolerance of plants to abiotic stresses. Recent studies have identified trehalose biosynthesis genes in local germplasm of wheat, such as the variety “Millat 1” under drought stress for different durations (2h, 4h, 6h, and 8h), compared to control plants.