Evaluation of Plant Growth Regulators under Stress Conditions

Abstract

Plant Growth Regulators (PGRs) are biochemical agents of great importance, which regulate physiological activities in plants especially in situations of abiotic and biotic stresses. Drought, salinity, heat, and cold, and heavy metals are among the stress factors that can affect the growth of plants and crop yield negatively. The implementation of PGRs like auxins, gibberellins, cytokinins, abscisic acid, salicylic acid, jasmonates, brassinosteroids, and ethylene modulators has been demonstrated to reduce the effects of the stress through the improvement of stress tolerance mechanisms including antioxidant enzyme activity, osmolyte accumulation, and the regulation of the expression of genes. This paper assesses the effectiveness of various PGRs in improving plant stress resilience in any form of stress using physiological, biochemical and molecular methods. Findings indicate that stress-induced plant performance is dramatically enhanced by the selection of PGR, which implies their possible use in sustainable farming.