Melatonin and its cross-talk with other signaling molecules under abiotic stress
Mohammad Faizan,
Haider Sultan,
Pravej Alam,
Fadime Karabulut,
Shi-Hui Cheng,
Vishnu D. Rajput,
Tatiana Minkina,
Shamsul Hayat,
Mohammad Nauman Khan,
Lixiao Nie
Affiliations
Mohammad Faizan
Botany Section, School of Sciences, Maulana Azad National Urdu University, Hyderabad 500032, India; Corresponding authors.
Haider Sultan
Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya 572000, China
Pravej Alam
Department of Biology, College of Science and Humanities, Prince Sattam bin Abdulaziz University, Alkharj 11942, Saudi Arabia; Corresponding authors.
Fadime Karabulut
Department of Biology, Faculty of Science, Firat University, 23119, Elazıg, Turkey
Shi-Hui Cheng
School of Biosciences, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, 43500 Semenyih, Selangor Darul Ehsan, Malaysia
Vishnu D. Rajput
Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don-344090, Russia
Tatiana Minkina
Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don-344090, Russia
Shamsul Hayat
Plant Physiology Lab, Department of Botany, Aligarh Muslim University, Aligarh 202002, India
Mohammad Nauman Khan
Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya 572000, China; Corresponding authors.
Lixiao Nie
Sanya Nanfan Research Institute of Hainan University, Hainan University, Sanya 572000, China
Melatonin is a hormone-like substance that serves as a secondary metabolite associated with a variety of physiological, hormonal, and natural processes at the cell, tissue, and organ levels. It acts as a plant biostimulant and increase tolerance against abiotic stresses like ssalinity, drought, heat, cold and heavy metals. Melatonin in plants, also called phytomelatonin, participating in the cellular mechanisms that ameliorates oxidative toxicity, hence helps the plant to stand abiotic stress conditions. These exclusive properties strengthen the defense capacity by stimulating the detoxification of reactive oxygen species (ROS), promoting physiological attributes, and activation of stress-responsive genes to ameliorate toxicity caused by abiotic stress. As a key molecule, it exhibits several important cellular and molecular interactions with nitric oxide (NO), calcium (Ca2+), hydrogen peroxide (H2O2) and hydrogen sulfide (H2S). In this review article, we discuss the salient role of melatonin in morphological and physiological adaptation of plant as well as its involvement in the abiotic stress mitigation. Besides, its role under stress, interaction of melatonin with NO, Ca2+, H2O2, and H2S has been demonstrated. This study will provide a reference for elucidating the regulatory mechanism of melatonin influencing the resistance to abiotic stress toxicity in plants.
