Melatonin-Induced Salinity Tolerance by Ameliorating Osmotic and Oxidative Stress in the Seedlings of Two Tomato ( Solan
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Melatonin‑Induced Salinity Tolerance by Ameliorating Osmotic and Oxidative Stress in the Seedlings of Two Tomato (Solanum lycopersicum L.) Cultivars Muhammad Ali1,2 · Muhammad Kamran1,3 · Ghulam Hassan Abbasi1 · Muhammad Hamzah Saleem4 · Salman Ahmad5,6 · Aasma Parveen1 · Zaffar Malik1 · Sobia Afzal1 · Sunny Ahmar4 · Khadim Muhammad Dawar7 · Sardar Ali8 · Saud Alamri9 · Manzer H. Siddiqui9 · Rasheed Akbar10 · Shah Fahad11,12 Received: 18 August 2020 / Accepted: 3 November 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Melatonin is a crucial biological hormone associated with many physiological and biochemical processes in plants and also enhances resistance against various abiotic stresses. However, the mechanisms underlying the melatonin-assisted mitigation of salt stress in tomato (Solanum lycopersicum L.) plant are still poorly understood. A hydroponic experiment was conducted to investigate the protective role of melatonin in two tomato cultivars (Roma and FM9) under a highly saline growth medium (160 mM NaCl). The one level of melatonin (1.0 µmol L−1) was applied exogenously, sole, or in combination with the salinity stress. NaCl-induced phytotoxicity significantly (P
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