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Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.)
Melatonin (MT) is a small molecule indole hormone that plays an important role in the regulation of biological processes and abiotic stress resistance. Previous studies have confirmed that MT promotes the normal development of plants under stress by mediating physiological regulation mechanisms. How...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8841648/ https://www.ncbi.nlm.nih.gov/pubmed/35173749 http://dx.doi.org/10.3389/fpls.2021.787062 |
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author | Zhang, Zhihui Liu, Liantao Li, Hongye Zhang, Shaocong Fu, Xiaoyi Zhai, Xiuzhen Yang, Na Shen, Jiaming Li, Ruiqi Li, Dongxiao |
author_facet | Zhang, Zhihui Liu, Liantao Li, Hongye Zhang, Shaocong Fu, Xiaoyi Zhai, Xiuzhen Yang, Na Shen, Jiaming Li, Ruiqi Li, Dongxiao |
author_sort | Zhang, Zhihui |
collection | PubMed |
description | Melatonin (MT) is a small molecule indole hormone that plays an important role in the regulation of biological processes and abiotic stress resistance. Previous studies have confirmed that MT promotes the normal development of plants under stress by mediating physiological regulation mechanisms. However, the physiological mechanism of exogenous MT regulating seed germination and seedling growth of wheat under salt stress is still unclear. In this study, NaCl stress decreased germination rate and inhibited seedling growth of wheat, but shoot length, root length, and plant weight of SM15 did not change significantly. The addition of 300 μM MT in the cultivation solution directly promoted the germination rate of SM15 and ZM18, and lateral root production, but decreased the germination rate of JM22 and inhibited the length of germ and radicle of three varieties under salt stress. For wheat seedling, application of MT could increase proline content, soluble protein, soluble sugar, Ca(2+) content, and vital amino acid content in leaves to keep high water content, low level of H(2)O(2) content, and low [K(+)]/[Na(+)] ratio. MT increased root vigor and [K(+)]/[Na(+)] ratio and decreased H(2)O(2) content in root induced by salt stress. In conclusion, MT enhanced salt tolerance in wheat seeds and seedlings by regulating the synthesis of soluble protein and sugar, ion compartmentation in roots and leaves, enhancement of enzymatic systems, and changes in amino acid levels. Salt resistance varied with different varieties under the same environmental condition. SM15 was a higher salt-resistant variety and JM22 was a salt-sensitive one. In wheat production, the application of exogenous MT should consider the differences among varieties of wheat during the sowing and seedling stages. |
format | Online Article Text |
id | pubmed-8841648 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-88416482022-02-15 Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) Zhang, Zhihui Liu, Liantao Li, Hongye Zhang, Shaocong Fu, Xiaoyi Zhai, Xiuzhen Yang, Na Shen, Jiaming Li, Ruiqi Li, Dongxiao Front Plant Sci Plant Science Melatonin (MT) is a small molecule indole hormone that plays an important role in the regulation of biological processes and abiotic stress resistance. Previous studies have confirmed that MT promotes the normal development of plants under stress by mediating physiological regulation mechanisms. However, the physiological mechanism of exogenous MT regulating seed germination and seedling growth of wheat under salt stress is still unclear. In this study, NaCl stress decreased germination rate and inhibited seedling growth of wheat, but shoot length, root length, and plant weight of SM15 did not change significantly. The addition of 300 μM MT in the cultivation solution directly promoted the germination rate of SM15 and ZM18, and lateral root production, but decreased the germination rate of JM22 and inhibited the length of germ and radicle of three varieties under salt stress. For wheat seedling, application of MT could increase proline content, soluble protein, soluble sugar, Ca(2+) content, and vital amino acid content in leaves to keep high water content, low level of H(2)O(2) content, and low [K(+)]/[Na(+)] ratio. MT increased root vigor and [K(+)]/[Na(+)] ratio and decreased H(2)O(2) content in root induced by salt stress. In conclusion, MT enhanced salt tolerance in wheat seeds and seedlings by regulating the synthesis of soluble protein and sugar, ion compartmentation in roots and leaves, enhancement of enzymatic systems, and changes in amino acid levels. Salt resistance varied with different varieties under the same environmental condition. SM15 was a higher salt-resistant variety and JM22 was a salt-sensitive one. In wheat production, the application of exogenous MT should consider the differences among varieties of wheat during the sowing and seedling stages. Frontiers Media S.A. 2022-01-31 /pmc/articles/PMC8841648/ /pubmed/35173749 http://dx.doi.org/10.3389/fpls.2021.787062 Text en Copyright © 2022 Zhang, Liu, Li, Zhang, Fu, Zhai, Yang, Shen, Li and Li. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Plant Science Zhang, Zhihui Liu, Liantao Li, Hongye Zhang, Shaocong Fu, Xiaoyi Zhai, Xiuzhen Yang, Na Shen, Jiaming Li, Ruiqi Li, Dongxiao Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) |
title | Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) |
title_full | Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) |
title_fullStr | Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) |
title_full_unstemmed | Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) |
title_short | Exogenous Melatonin Promotes the Salt Tolerance by Removing Active Oxygen and Maintaining Ion Balance in Wheat (Triticum aestivum L.) |
title_sort | exogenous melatonin promotes the salt tolerance by removing active oxygen and maintaining ion balance in wheat (triticum aestivum l.) |
topic | Plant Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8841648/ https://www.ncbi.nlm.nih.gov/pubmed/35173749 http://dx.doi.org/10.3389/fpls.2021.787062 |
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