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Agronomy 2018, 8(4), 33; https://doi.org/10.3390/agronomy8040033

Relationship of Melatonin and Salicylic Acid in Biotic/Abiotic Plant Stress Responses

Department of Plant Biology (Plant Physiology), Faculty of Biology, University of Murcia, Campus de Espinardo, 30100-Murcia, Spain
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Received: 22 February 2018 / Revised: 14 March 2018 / Accepted: 21 March 2018 / Published: 22 March 2018
(This article belongs to the Special Issue Salicylic Acid in Plant Stress Responses)
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Abstract

Melatonin (N-acetyl-5-methoxytryptamine) was discovered in plants in 1995, while salicylic acid was the name given to the active ingredient of willow in 1838. From a physiological point of view, these two molecules present in plants have never been compared, even though they have a great number of similarities, as we shall see in this work. Both molecules have biosynthesis pathways that share a common precursor and both play a relevant role in the physiology of plants, especially in aspects related to biotic and abiotic stress. They have also been described as biostimulants of photosynthetic processes and productivity enhancers in agricultural crops. We review the coincident aspects of both molecules, and propose an action model, by which the relationship between these molecules and other agents and plant hormones can be studied. View Full-Text
Keywords: antioxidant; nitric oxide (NO); phytomelatonin; plant hormones; plant stress; Reactive oxygen species (ROS); salicylic acid antioxidant; nitric oxide (NO); phytomelatonin; plant hormones; plant stress; Reactive oxygen species (ROS); salicylic acid
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Hernández-Ruiz, J.; Arnao, M.B. Relationship of Melatonin and Salicylic Acid in Biotic/Abiotic Plant Stress Responses. Agronomy 2018, 8, 33.

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