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Melatonin as a regulator of plant ionic homeostasis: implications for abiotic stress tolerance

Citation

Huang, X and Tanveer, M and Min, Y and Shabala, S, Melatonin as a regulator of plant ionic homeostasis: implications for abiotic stress tolerance, Journal of experimental botany, 73, (17) pp. 5886-5902. ISSN 1460-2431 (2022) [Refereed Article]


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Copyright Statement

The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 International (CC BY 4.0) License, (https://creativecommons.org/licenses/by/4.0/) which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

DOI: doi:10.1093/jxb/erac224

Abstract

Melatonin is a highly conserved and ubiquitous molecule that operates upstream of a broad array of receptors in animal systems. Since melatonin was discovered in plants in 1995, hundreds of papers have been published revealing its role in plant growth, development, and adaptive responses to the environment. This paper summarizes the current state of knowledge of melatonin's involvement in regulating plant ion homeostasis and abiotic stress tolerance. The major topics covered here are: (i) melatonin's control of H+-ATPase activity and its implication for plant adaptive responses to various abiotic stresses; (ii) regulation of the reactive oxygen species (ROS)-Ca2+ hub by melatonin and its role in stress signaling; and (iii) melatonin's regulation of ionic homeostasis via hormonal cross-talk. We also show that the properties of the melatonin molecule allow its direct scavenging of ROS, thus preventing negative effects of ROS-induced activation of ion channels. The above 'desensitization' may play a critical role in preventing stress-induced K+ loss from the cytosol as well as maintaining basic levels of cytosolic Ca2+ required for optimal cell operation. Future studies should focus on revealing the molecular identity of transporters that could be directly regulated by melatonin and providing a bioinformatic analysis of evolutionary aspects of melatonin sensing and signaling.

Item Details

Item Type:Refereed Article
Keywords:melatonin; ion channels; stress; ROS
Research Division:Biological Sciences
Research Group:Plant biology
Research Field:Plant physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Other plant production and plant primary products
Objective Field:Other plant production and plant primary products not elsewhere classified
UTAS Author:Tanveer, M (Mr Mohsin Tanveer)
UTAS Author:Shabala, S (Professor Sergey Shabala)
ID Code:155137
Year Published:2022
Web of Science® Times Cited:6
Deposited By:Agriculture and Food Systems
Deposited On:2023-01-30
Last Modified:2023-03-16
Downloads:2 View Download Statistics

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