Role of Melatonin in Plant Tolerance to Soil Stressors: Salinity, pH and Heavy Metals

文献类型： 外文期刊

第一作者： Moustafa-Farag, Mohamed

作者： Moustafa-Farag, Mohamed;Li, Linfeng;Wang, Yanhong;Ai, Shaoying;Moustafa-Farag, Mohamed;Dafea, Mohamed;Mahmoud, Ahmed;Elkelish, Amr;Khan, Mumtaz;Arnao, Marino B.;Abdelhamid, Magdi T.;Abu El-Ezz, Aziz;Almoneafy, Abdlwareth;Mahmoud, Ahmed;Awad, Mahrous;Hasanuzzaman, Mirza

作者机构：

关键词： acidity; alkalinity; antioxidants; heavy metals; melatonin; salinity

期刊名称：MOLECULES （ 影响因子：4.411； 五年影响因子：4.587 ）

ISSN：

年卷期： 2020 年 25 卷 22 期

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收录情况： SCI

摘要： Melatonin (MT) is a pleiotropic molecule with diverse and numerous actions both in plants and animals. In plants, MT acts as an excellent promotor of tolerance against abiotic stress situations such as drought, cold, heat, salinity, and chemical pollutants. In all these situations, MT has a stimulating effect on plants, fomenting many changes in biochemical processes and stress-related gene expression. Melatonin plays vital roles as an antioxidant and can work as a free radical scavenger to protect plants from oxidative stress by stabilization cell redox status; however, MT can alleviate the toxic oxygen and nitrogen species. Beyond this, MT stimulates the antioxidant enzymes and augments antioxidants, as well as activates the ascorbate-glutathione (AsA-GSH) cycle to scavenge excess reactive oxygen species (ROS). In this review, we examine the recent data on the capacity of MT to alleviate the effects of common abiotic soil stressors, such as salinity, alkalinity, acidity, and the presence of heavy metals, reinforcing the general metabolism of plants and counteracting harmful agents. An exhaustive analysis of the latest advances in this regard is presented, and possible future applications of MT are discussed.

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