Abstract
Endogenous plant growth regulators play an important role in regulating plant responses to abiotic stress by sensitizing growth and developmental processes. While the physiological and molecular mechanisms linked to the role of ABA and cytokinins in stress tolerance are well explained, there is growing interest to elucidate the associations of auxins, ethylene, gibberellins, brassinosteroids, and polyamines in stress tolerance mechanism and also on possible cross talk mechanism among different growth regulators during stress tolerance acquisition. Identification and characterization of the gene regulating synthesis of different endogenous growth regulators and recent progresses on hormonal signaling, mutant research, and physiological actions have provided scope for manipulating their biosynthetic pathways for developing transgenic crop plants with enhanced abiotic stress tolerance. Researches have also provided some leads in exploiting the potential of growth regulators in enhancing the resistance to abiotic stresses of crops.
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Upreti, K.K., Sharma, M. (2016). Role of Plant Growth Regulators in Abiotic Stress Tolerance. In: Rao, N., Shivashankara, K., Laxman, R. (eds) Abiotic Stress Physiology of Horticultural Crops. Springer, New Delhi. https://doi.org/10.1007/978-81-322-2725-0_2
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