Unveiling the Plant Growth Regulators Crosstalk in Agricultural Crop Response to Salinity-Stress: A Concise Review

Salinity, among abiotic stresses, has a considerable limiting effect on agricultural productivity, survival, and production, therefore leading to substantial economic losses. Plant growth regulators (PGRs) are crucial in regulating how plants react to environmental stressors. The most vital endogenous molecules that govern physiological responses for plant salinity adaptation are PGRs, although many other factors also influence how plants respond to salt. Fluctuations in the levels of numerous PGRs are typical responses to salt stress, and they affect the expression of genes associated with their synthesis and the responses they control. This review emphasizes the current developments in plant salinity responses at the physiological and molecular levels, the potential role of PGRs, and their adjustment under salt stress. The roles of ABAs, IAA, cytokinins, GAs, SAs, MeJA, and BRs in enhancing plant responses to salinity stress, along with their interactions across various pathways influenced by these plant growth regulators, are crucial for understanding their adaptive mechanisms. Understanding the processes that allow plants to sense salinity and initiate signal transduction cascades via PGRs is essential for developing salinity-related breeding and transgenic techniques. This review demonstrates various plant growth promoters and how their crosstalk affects the overall development of the plant.