Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants
Salinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K<sup>+</sup>/Na<sup>+</sup> homeostasis and preventing the salinity stress mediated o...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-08-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/8/1186 |
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| author | Ibrahim A. A. Mohamed Nesma Shalby Ali M. A. El-Badri Muhammad Hamzah Saleem Mohammad Nauman Khan Muhammad A. Nawaz Meng Qin Ramadan A. Agami Jie Kuai Bo Wang Guangsheng Zhou |
| author_facet | Ibrahim A. A. Mohamed Nesma Shalby Ali M. A. El-Badri Muhammad Hamzah Saleem Mohammad Nauman Khan Muhammad A. Nawaz Meng Qin Ramadan A. Agami Jie Kuai Bo Wang Guangsheng Zhou |
| author_sort | Ibrahim A. A. Mohamed |
| collection | DOAJ |
| description | Salinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K<sup>+</sup>/Na<sup>+</sup> homeostasis and preventing the salinity stress mediated oxidative damage and photosynthetic inhibition was studied in two rapeseed cultivars. We found that 50 µM MT treatment imparted a very prominent impact on growth, metabolism of antioxidants, photosynthesis, osmolytes, secondary metabolites, yield, and fatty acids composition. Days required for appearance of first flower and 50% flowering were decreased by MT application. Exogenous MT treatment effectively decreased the oxidative damage by significantly declining the generation of superoxide and hydrogen peroxide under saline and non-saline conditions, as reflected in lowered lipid peroxidation, heightened membrane stability, and up-regulation of antioxidant enzymes (catalase, superoxide dismutase, and ascorbate peroxidase). Furthermore, MT application enhanced the chlorophyll content, photosynthetic rate, relative water content, K<sup>+</sup>/Na<sup>+</sup> homeostasis, soluble sugars, and proline content. Moreover, MT application obviously improved the oil quality of rapeseed cultivars by reducing glucosinolates, saturated fatty acids (palmitic and arachidic acids), and enhancing unsaturated fatty acids (linolenic and oleic acids except erucic acid were reduced). Yield related-traits such as silique traits, seed yield per plant, 1000 seeds weight, seed oil content, and yield biomass traits were enhanced by MT application. The anatomical analysis of leaf and stem showed that stomatal and xylem vessels traits are associated with sodium chloride tolerance, yield, and seed fatty acid composition. These results suggest the supportive role of MT on the quality and quantity of rapeseed oil yield. |
| first_indexed | 2024-03-10T17:29:09Z |
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| id | doaj.art-2b55a3e1b29f4d438b444b9a9f6fe746 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T17:29:09Z |
| publishDate | 2020-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-2b55a3e1b29f4d438b444b9a9f6fe7462023-11-20T10:03:18ZengMDPI AGAgronomy2073-43952020-08-01108118610.3390/agronomy10081186Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. PlantsIbrahim A. A. Mohamed0Nesma Shalby1Ali M. A. El-Badri2Muhammad Hamzah Saleem3Mohammad Nauman Khan4Muhammad A. Nawaz5Meng Qin6Ramadan A. Agami7Jie Kuai8Bo Wang9Guangsheng Zhou10MOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaFaculty of Agriculture, Fayoum University, Fayoum 63514, EgyptMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaCollege of Agriculture, University of Sargodha, Sargodha 40100, PakistanMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaFaculty of Agriculture, Fayoum University, Fayoum 63514, EgyptMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaMOA Key Laboratory of Crop Ecophysiology and Farming System in the Middle Reaches of the Yangtze River, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, ChinaSalinity stress is a limiting factor for the growth and yield quality of rapeseed. The potentiality of melatonin (MT; 0, 25, 50, and 100 µM) application as a seed priming agent in mediating K<sup>+</sup>/Na<sup>+</sup> homeostasis and preventing the salinity stress mediated oxidative damage and photosynthetic inhibition was studied in two rapeseed cultivars. We found that 50 µM MT treatment imparted a very prominent impact on growth, metabolism of antioxidants, photosynthesis, osmolytes, secondary metabolites, yield, and fatty acids composition. Days required for appearance of first flower and 50% flowering were decreased by MT application. Exogenous MT treatment effectively decreased the oxidative damage by significantly declining the generation of superoxide and hydrogen peroxide under saline and non-saline conditions, as reflected in lowered lipid peroxidation, heightened membrane stability, and up-regulation of antioxidant enzymes (catalase, superoxide dismutase, and ascorbate peroxidase). Furthermore, MT application enhanced the chlorophyll content, photosynthetic rate, relative water content, K<sup>+</sup>/Na<sup>+</sup> homeostasis, soluble sugars, and proline content. Moreover, MT application obviously improved the oil quality of rapeseed cultivars by reducing glucosinolates, saturated fatty acids (palmitic and arachidic acids), and enhancing unsaturated fatty acids (linolenic and oleic acids except erucic acid were reduced). Yield related-traits such as silique traits, seed yield per plant, 1000 seeds weight, seed oil content, and yield biomass traits were enhanced by MT application. The anatomical analysis of leaf and stem showed that stomatal and xylem vessels traits are associated with sodium chloride tolerance, yield, and seed fatty acid composition. These results suggest the supportive role of MT on the quality and quantity of rapeseed oil yield.https://www.mdpi.com/2073-4395/10/8/1186rapeseedsalinity stressN-acetyl-5-methoxytryptamineseed oil qualityantioxidant systemmicrostructure |
| spellingShingle | Ibrahim A. A. Mohamed Nesma Shalby Ali M. A. El-Badri Muhammad Hamzah Saleem Mohammad Nauman Khan Muhammad A. Nawaz Meng Qin Ramadan A. Agami Jie Kuai Bo Wang Guangsheng Zhou Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants Agronomy rapeseed salinity stress N-acetyl-5-methoxytryptamine seed oil quality antioxidant system microstructure |
| title | Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants |
| title_full | Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants |
| title_fullStr | Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants |
| title_full_unstemmed | Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants |
| title_short | Stomata and Xylem Vessels Traits Improved by Melatonin Application Contribute to Enhancing Salt Tolerance and Fatty Acid Composition of <i>Brassica napus</i> L. Plants |
| title_sort | stomata and xylem vessels traits improved by melatonin application contribute to enhancing salt tolerance and fatty acid composition of i brassica napus i l plants |
| topic | rapeseed salinity stress N-acetyl-5-methoxytryptamine seed oil quality antioxidant system microstructure |
| url | https://www.mdpi.com/2073-4395/10/8/1186 |
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