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Molecules 2018, 23(9), 2352;

Melatonin and Its Effects on Plant Systems

College of Horticulture, Northwest A&F University, Yangling 712100, China
Department of Plant Biology (Plant Physiology), Faculty of Biology, University of Murcia, Campus de Espinardo, 30100 Murcia, Spain
Department of Horticulture, Faculty of Agriculture, Akdeniz University, 07059 Antalya, Turkey
State Key Laboratory of Crop Stress Biology in Arid Areas, College of Life Sciences, Northwest A&F University, Yangling 712100, China
Department of Horticulture, University college of Agriculture, University of Sargodha, Sargodha 40100, Pakistan
College of Life Science, Northwest A&F University, Yangling 712100, China
Authors to whom correspondence should be addressed.
Received: 13 June 2018 / Revised: 11 July 2018 / Accepted: 20 July 2018 / Published: 14 September 2018
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Melatonin (N-acetyl-5-methoxytryptamine) is a nontoxic biological molecule produced in a pineal gland of animals and different tissues of plants. It is an important secondary messenger molecule, playing a vital role in coping with various abiotic and biotic stresses. Melatonin serves as an antioxidant in postharvest technology and enhances the postharvest life of fruits and vegetables. The application of exogenous melatonin alleviated reactive oxygen species and cell damage induced by abiotic and biotic stresses by means of repairing mitochondria. Additionally, the regulation of stress-specific genes and the activation of pathogenesis-related protein and antioxidant enzymes genes under biotic and abiotic stress makes it a more versatile molecule. Besides that, the crosstalk with other phytohormones makes inroads to utilize melatonin against non-testified stress conditions, such as viruses and nematodes. Furthermore, different strategies have been discussed to induce endogenous melatonin activity in order to sustain a plant system. Our review highlighted the diverse roles of melatonin in a plant system, which could be useful in enhancing the environmental friendly crop production and ensure food safety. View Full-Text
Keywords: melatonin; abiotic stress; biotic stress; antioxidants; gene expression; postharvest; mitochondria melatonin; abiotic stress; biotic stress; antioxidants; gene expression; postharvest; mitochondria

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Sharif, R.; Xie, C.; Zhang, H.; Arnao, M.B.; Ali, M.; Ali, Q.; Muhammad, I.; Shalmani, A.; Nawaz, M.A.; Chen, P.; Li, Y. Melatonin and Its Effects on Plant Systems. Molecules 2018, 23, 2352.

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