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Melatonin-Mediated Salt Stress Tolerance in Plants

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Melatonin: Role in Plant Signaling, Growth and Stress Tolerance

Part of the book series: Plant in Challenging Environments ((PCE,volume 4))

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Abstract

Among the abiotic stresses, salt stress could become more severe for sustainable agricultural practices and limit crop production. It affects plant growth performances and limits both the yield and quality of crop plants by disturbing the optimum physiology and metabolism of the plants. Melatonin (Mel) is a multifaceted signaling molecule and is involved in a wide range of physiological processes in plants such as improvement in growth, germination of seeds, adventitious rooting, photosynthetic processes, and osmoregulation. Importantly, Mel acts as an antioxidant with a significant role in the regulation of cellular redox homeostasis by scavenging excessive accumulation of toxic reactive oxygen species (ROS) as well as reactive nitrogen species (RNS) and also enhances the antioxidant system in the plants under stress conditions, including salt stress. Recently, Mel has been implicated in combating salt-induced toxicities by regulating multiple plant processes such as enhancing the level of osmoregulatory substances, up-regulating Na+ exclusion and sequestration, increasing the K+/Na+ ratio, protecting photosynthetic pigment system and biomolecules, regulating stomatal movements and gene expression of salt stress-associated genes. In this compiled work, we have comprehensively discussed the regulatory role of Mel in augmenting salt stress tolerance in plants.

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Authors and Affiliations

  1. Plant Physiology and Biochemistry Section, Department of Botany, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, India

    Tanveer Ahmad Khan, Bisma Hilal, Qazi Fariduddin & Mohd Saleem

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  1. Tanveer Ahmad Khan
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  2. Bisma Hilal
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  3. Qazi Fariduddin
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  4. Mohd Saleem
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Editors and Affiliations

  1. Jangipur College, Department of Botany, University of Kalyani, Jangipur, India

    Soumya Mukherjee

  2. CSIC, Estación Experimental del Zaidín, Granada, Granada, Spain

    Francisco J. Corpas

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Khan, T.A., Hilal, B., Fariduddin, Q., Saleem, M. (2023). Melatonin-Mediated Salt Stress Tolerance in Plants. In: Mukherjee, S., Corpas, F.J. (eds) Melatonin: Role in Plant Signaling, Growth and Stress Tolerance. Plant in Challenging Environments, vol 4. Springer, Cham. https://doi.org/10.1007/978-3-031-40173-2_16

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