Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms

Heavy metal toxicity is one of the most devastating abiotic stresses. Heavy metals cause serious damage to plant growth and productivity, which is a major problem for sustainable agriculture. It adversely affects plant molecular physiology and biochemistry by generating osmotic stress, ionic imbalan...

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Autores principales: Md. Najmol Hoque, Md. Tahjib-Ul-Arif, Afsana Hannan, Naima Sultana, Shirin Akhter, Md. Hasanuzzaman, Fahmida Akter, Md. Sazzad Hossain, Md. Abu Sayed, Md. Toufiq Hasan, Milan Skalicky, Xiangnan Li, Marián Brestič
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Publicado: MDPI AG 2021
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Acceso en línea:https://doaj.org/article/5e06130df388419c826a39ffd6ac1be8
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spelling oai:doaj.org-article:5e06130df388419c826a39ffd6ac1be82021-11-11T16:54:30ZMelatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms10.3390/ijms2221114451422-00671661-6596https://doaj.org/article/5e06130df388419c826a39ffd6ac1be82021-10-01T00:00:00Zhttps://www.mdpi.com/1422-0067/22/21/11445https://doaj.org/toc/1661-6596https://doaj.org/toc/1422-0067Heavy metal toxicity is one of the most devastating abiotic stresses. Heavy metals cause serious damage to plant growth and productivity, which is a major problem for sustainable agriculture. It adversely affects plant molecular physiology and biochemistry by generating osmotic stress, ionic imbalance, oxidative stress, membrane disorganization, cellular toxicity, and metabolic homeostasis. To improve and stimulate plant tolerance to heavy metal stress, the application of biostimulants can be an effective approach without threatening the ecosystem. Melatonin (<i>N</i>-acetyl-5-methoxytryptamine), a biostimulator, plant growth regulator, and antioxidant, promotes plant tolerance to heavy metal stress by improving redox and nutrient homeostasis, osmotic balance, and primary and secondary metabolism. It is important to perceive the complete and detailed regulatory mechanisms of exogenous and endogenous melatonin-mediated heavy metal-toxicity mitigation in plants to identify potential research gaps that should be addressed in the future. This review provides a novel insight to understand the multifunctional role of melatonin in reducing heavy metal stress and the underlying molecular mechanisms.Md. Najmol HoqueMd. Tahjib-Ul-ArifAfsana HannanNaima SultanaShirin AkhterMd. HasanuzzamanFahmida AkterMd. Sazzad HossainMd. Abu SayedMd. Toufiq HasanMilan SkalickyXiangnan LiMarián BrestičMDPI AGarticleabiotic stressheavy metalplant growthphytomelatoninoxidative stressBiology (General)QH301-705.5ChemistryQD1-999ENInternational Journal of Molecular Sciences, Vol 22, Iss 11445, p 11445 (2021)
institution DOAJ
collection DOAJ
language EN
topic abiotic stress
heavy metal
plant growth
phytomelatonin
oxidative stress
Biology (General)
QH301-705.5
Chemistry
QD1-999
spellingShingle abiotic stress
heavy metal
plant growth
phytomelatonin
oxidative stress
Biology (General)
QH301-705.5
Chemistry
QD1-999
Md. Najmol Hoque
Md. Tahjib-Ul-Arif
Afsana Hannan
Naima Sultana
Shirin Akhter
Md. Hasanuzzaman
Fahmida Akter
Md. Sazzad Hossain
Md. Abu Sayed
Md. Toufiq Hasan
Milan Skalicky
Xiangnan Li
Marián Brestič
Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms
description Heavy metal toxicity is one of the most devastating abiotic stresses. Heavy metals cause serious damage to plant growth and productivity, which is a major problem for sustainable agriculture. It adversely affects plant molecular physiology and biochemistry by generating osmotic stress, ionic imbalance, oxidative stress, membrane disorganization, cellular toxicity, and metabolic homeostasis. To improve and stimulate plant tolerance to heavy metal stress, the application of biostimulants can be an effective approach without threatening the ecosystem. Melatonin (<i>N</i>-acetyl-5-methoxytryptamine), a biostimulator, plant growth regulator, and antioxidant, promotes plant tolerance to heavy metal stress by improving redox and nutrient homeostasis, osmotic balance, and primary and secondary metabolism. It is important to perceive the complete and detailed regulatory mechanisms of exogenous and endogenous melatonin-mediated heavy metal-toxicity mitigation in plants to identify potential research gaps that should be addressed in the future. This review provides a novel insight to understand the multifunctional role of melatonin in reducing heavy metal stress and the underlying molecular mechanisms.
format article
author Md. Najmol Hoque
Md. Tahjib-Ul-Arif
Afsana Hannan
Naima Sultana
Shirin Akhter
Md. Hasanuzzaman
Fahmida Akter
Md. Sazzad Hossain
Md. Abu Sayed
Md. Toufiq Hasan
Milan Skalicky
Xiangnan Li
Marián Brestič
author_facet Md. Najmol Hoque
Md. Tahjib-Ul-Arif
Afsana Hannan
Naima Sultana
Shirin Akhter
Md. Hasanuzzaman
Fahmida Akter
Md. Sazzad Hossain
Md. Abu Sayed
Md. Toufiq Hasan
Milan Skalicky
Xiangnan Li
Marián Brestič
author_sort Md. Najmol Hoque
title Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms
title_short Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms
title_full Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms
title_fullStr Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms
title_full_unstemmed Melatonin Modulates Plant Tolerance to Heavy Metal Stress: Morphological Responses to Molecular Mechanisms
title_sort melatonin modulates plant tolerance to heavy metal stress: morphological responses to molecular mechanisms
publisher MDPI AG
publishDate 2021
url https://doaj.org/article/5e06130df388419c826a39ffd6ac1be8
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