Melatonin improves aluminum tolerance in soybean through modification of cell wall and vacuolar compartmentalization of aluminum
Copyright © 2025 Elsevier GmbH. All rights reserved.
| Publié dans: | Journal of plant physiology. - 1979. - 310(2025) vom: 20. Mai, Seite 154525 |
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| Auteur principal: | |
| Autres auteurs: | , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2025
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| Accès à la collection: | Journal of plant physiology |
| Sujets: | Journal Article Aluminum toxicity Aluminum transport Cell wall Melatonin Vacuole |
| Résumé: | Copyright © 2025 Elsevier GmbH. All rights reserved. Aluminum (Al) toxicity has a significant adverse impact on plant growth and crop yield. Melatonin (MT) is involved in plant responses to various environmental stresses. However, the role of MT in mitigating Al toxicity remains largely unknown in soybean (Glycine max L.). In this study, the findings indicate that MT application alleviates Al-induced root growth inhibition and reduces Al accumulation in the cell wall. MT application under Al stress decreased the pectin and hemicellulose 1 content in the root tip cell wall and increased pectin methyl esterification, leading to reduced Al binding in the cell wall fractions. Additionally, MT treatment under Al stress inhibited lignin synthesis in the root tip cell wall, thereby alleviating the increased rigidity of cell wall and promoting its expansion. Furthermore, MT application under Al stress modulated the expression of Al transport-related genes (GmCDT3, GmNrat1, GmIREG3 and GmALS1), reducing cytoplasmic Al accumulation and enhancing vacuolar Al sequestration. Taken together, these findings suggest that MT mitigates Al toxicity in soybean by reducing Al deposition in the cell wall and enhancing Al sequestration in the vacuole. This study offers clues for enhancing crop resistance to Al toxicity in acidic soils |
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| Description: | Date Revised 24.05.2025 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1618-1328 |
| DOI: | 10.1016/j.jplph.2025.154525 |