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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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) |
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abiotic stress heavy metal plant growth phytomelatonin oxidative stress Biology (General) QH301-705.5 Chemistry QD1-999 |
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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 |
work_keys_str_mv |
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