Melatonin Mediates Enhancement of Stress Tolerance in Plants
Melatonin is a multifunctional signaling molecule, ubiquitously distributed in different parts of plants and responsible for stimulating several physiological responses to adverse environmental conditions. In the current review, we showed that the biosynthesis of melatonin occurred in plants by them...
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doaj-cca379c2bc9941e7a83376934b583d222020-11-24T23:47:27ZengMDPI AGInternational Journal of Molecular Sciences1422-00672019-02-01205104010.3390/ijms20051040ijms20051040Melatonin Mediates Enhancement of Stress Tolerance in PlantsBiswojit Debnath0Waqar Islam1Min Li2Yueting Sun3Xiaocao Lu4Sangeeta Mitra5Mubasher Hussain6Shuang Liu7Dongliang Qiu8College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Geographical Sciences, Fujian Normal University, Fuzhou, Fujian 350007, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaCollege of Horticulture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, ChinaMelatonin is a multifunctional signaling molecule, ubiquitously distributed in different parts of plants and responsible for stimulating several physiological responses to adverse environmental conditions. In the current review, we showed that the biosynthesis of melatonin occurred in plants by themselves, and accumulation of melatonin fluctuated sharply by modulating its biosynthesis and metabolic pathways under stress conditions. Melatonin, with its precursors and derivatives, acted as a powerful growth regulator, bio-stimulator, and antioxidant, which delayed leaf senescence, lessened photosynthesis inhibition, and improved redox homeostasis and the antioxidant system through a direct scavenging of reactive oxygen species (ROS) and reactive nitrogen species (RNS) under abiotic and biotic stress conditions. In addition, exogenous melatonin boosted the growth, photosynthetic, and antioxidant activities in plants, confirming their tolerances against drought, unfavorable temperatures, salinity, heavy metals, acid rain, and pathogens. However, future research, together with recent advancements, would support emerging new approaches to adopt strategies in overcoming the effect of hazardous environments on crops and may have potential implications in expanding crop cultivation against harsh conditions. Thus, farming communities and consumers will benefit from elucidating food safety concerns.https://www.mdpi.com/1422-0067/20/5/1040endogenous melatoninexogenous melatoningrowth regulatorbio-stimulatorantioxidantsoxidative stress |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Biswojit Debnath Waqar Islam Min Li Yueting Sun Xiaocao Lu Sangeeta Mitra Mubasher Hussain Shuang Liu Dongliang Qiu |
spellingShingle |
Biswojit Debnath Waqar Islam Min Li Yueting Sun Xiaocao Lu Sangeeta Mitra Mubasher Hussain Shuang Liu Dongliang Qiu Melatonin Mediates Enhancement of Stress Tolerance in Plants International Journal of Molecular Sciences endogenous melatonin exogenous melatonin growth regulator bio-stimulator antioxidants oxidative stress |
author_facet |
Biswojit Debnath Waqar Islam Min Li Yueting Sun Xiaocao Lu Sangeeta Mitra Mubasher Hussain Shuang Liu Dongliang Qiu |
author_sort |
Biswojit Debnath |
title |
Melatonin Mediates Enhancement of Stress Tolerance in Plants |
title_short |
Melatonin Mediates Enhancement of Stress Tolerance in Plants |
title_full |
Melatonin Mediates Enhancement of Stress Tolerance in Plants |
title_fullStr |
Melatonin Mediates Enhancement of Stress Tolerance in Plants |
title_full_unstemmed |
Melatonin Mediates Enhancement of Stress Tolerance in Plants |
title_sort |
melatonin mediates enhancement of stress tolerance in plants |
publisher |
MDPI AG |
series |
International Journal of Molecular Sciences |
issn |
1422-0067 |
publishDate |
2019-02-01 |
description |
Melatonin is a multifunctional signaling molecule, ubiquitously distributed in different parts of plants and responsible for stimulating several physiological responses to adverse environmental conditions. In the current review, we showed that the biosynthesis of melatonin occurred in plants by themselves, and accumulation of melatonin fluctuated sharply by modulating its biosynthesis and metabolic pathways under stress conditions. Melatonin, with its precursors and derivatives, acted as a powerful growth regulator, bio-stimulator, and antioxidant, which delayed leaf senescence, lessened photosynthesis inhibition, and improved redox homeostasis and the antioxidant system through a direct scavenging of reactive oxygen species (ROS) and reactive nitrogen species (RNS) under abiotic and biotic stress conditions. In addition, exogenous melatonin boosted the growth, photosynthetic, and antioxidant activities in plants, confirming their tolerances against drought, unfavorable temperatures, salinity, heavy metals, acid rain, and pathogens. However, future research, together with recent advancements, would support emerging new approaches to adopt strategies in overcoming the effect of hazardous environments on crops and may have potential implications in expanding crop cultivation against harsh conditions. Thus, farming communities and consumers will benefit from elucidating food safety concerns. |
topic |
endogenous melatonin exogenous melatonin growth regulator bio-stimulator antioxidants oxidative stress |
url |
https://www.mdpi.com/1422-0067/20/5/1040 |
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