Plant growth regulator-mediated response under abiotic stress: A review

Abstract

Plant growth regulators (PGRs) are essential for regulating how plants respond to abiotic stress by activating their proliferation and development pathways. Abiotic stressors that plants encounter during their development cycle are attempted to be managed by growth regulators. Growth hormones are chemical messengers that control a plant's regular growth and responsiveness to external stimuli. They control tissue development and differentiation, which controls how quickly plants develop. PGRs are necessary for the plant's reaction to abiotic stress. In addition, hormones in plants allow them to recognize adverse environmental circumstances. The plants' ability to biosynthesize phytohormones allows them to adapt to their environment. Abscisic acid aids plants in dealing with salt and drought stress, whereas ethylene aids plants in salinity, overwatering, cold, and drought. Plants may recover from mechanical damage and drought stress with the help of jasmonic acid. Research has also offered some tips for maximizing the ability of growth regulators to strengthen crops' tolerance to abiotic stressors. ARTICLE HIGHLIGHTS •PGRs play a vital role in helping plants to tolerate abiotic stress. •Research on the use of PGRs to improve crop tolerance to abiotic stress is promising. •PGRs can help plants to tolerate abiotic stress by altering their physiology and morphology. •PGRs have the potential to be used as sustainable tools to mitigate the effects of climate change on agriculture.