Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis
Several studies have related the application of micronutrients such as zinc, iron and molybdenum with alleviation of stress symptoms in horticultural plants. However, there are few studies that correlate the microelements with water relations. The main objective of this study was to determine the ef...
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| Format: | Article |
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MDPI AG
2020-10-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/10/10/1528 |
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| author | Hamideh Fatemi Micaela Carvajal Juan José Rios |
| author_facet | Hamideh Fatemi Micaela Carvajal Juan José Rios |
| author_sort | Hamideh Fatemi |
| collection | DOAJ |
| description | Several studies have related the application of micronutrients such as zinc, iron and molybdenum with alleviation of stress symptoms in horticultural plants. However, there are few studies that correlate the microelements with water relations. The main objective of this study was to determine the effect of the foliar application of Zn on pak choi (<i>Brassica campestris</i>, L.) plants grown under saline conditions. When plants were grown in a nutrient solution containing 0 or 80 mM NaCl, shoot biomass was greatly decreased, while, in a separate experiment, Zn toxicity was observed when it was applied at concentrations above 50 µM as a foliar spray. In a third experiment, low Zn applications, mainly 25 µM, enhanced parameters such as gas exchange, biomass and glucosinolates synthesis in plants grown under saline conditions (80 mM NaCl). Also, Zn application provoked a rise in membrane integrity and decreased oxidative damage in root cells. In conclusion, Zn application decreased oxidative damage and increased the content of glucosinolates, which could act as important signals to improve water uptake and transport and, as a consequence, alleviate salinity stress in pak choi plants. |
| first_indexed | 2024-03-10T15:47:06Z |
| format | Article |
| id | doaj.art-d3ba0320797d46e1957b1ca25598802f |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-10T15:47:06Z |
| publishDate | 2020-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-d3ba0320797d46e1957b1ca25598802f2023-11-20T16:23:15ZengMDPI AGAgronomy2073-43952020-10-011010152810.3390/agronomy10101528Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate SynthesisHamideh Fatemi0Micaela Carvajal1Juan José Rios2Horticulture Department, Mohaghegh Ardabili University, Ardabil 56199-13131, IranGroup of Aquaporins, Plant Nutrition Department, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo, E-30100 Murcia, SpainGroup of Aquaporins, Plant Nutrition Department, Centro de Edafologia y Biologia Aplicada del Segura, CEBAS-CSIC, Campus Universitario de Espinardo, E-30100 Murcia, SpainSeveral studies have related the application of micronutrients such as zinc, iron and molybdenum with alleviation of stress symptoms in horticultural plants. However, there are few studies that correlate the microelements with water relations. The main objective of this study was to determine the effect of the foliar application of Zn on pak choi (<i>Brassica campestris</i>, L.) plants grown under saline conditions. When plants were grown in a nutrient solution containing 0 or 80 mM NaCl, shoot biomass was greatly decreased, while, in a separate experiment, Zn toxicity was observed when it was applied at concentrations above 50 µM as a foliar spray. In a third experiment, low Zn applications, mainly 25 µM, enhanced parameters such as gas exchange, biomass and glucosinolates synthesis in plants grown under saline conditions (80 mM NaCl). Also, Zn application provoked a rise in membrane integrity and decreased oxidative damage in root cells. In conclusion, Zn application decreased oxidative damage and increased the content of glucosinolates, which could act as important signals to improve water uptake and transport and, as a consequence, alleviate salinity stress in pak choi plants.https://www.mdpi.com/2073-4395/10/10/1528Micronutrientsfoliar fertilizationsalinitysecondary metabolism<i>Brassica campestris</i> L., gas exchange |
| spellingShingle | Hamideh Fatemi Micaela Carvajal Juan José Rios Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis Agronomy Micronutrients foliar fertilization salinity secondary metabolism <i>Brassica campestris</i> L., gas exchange |
| title | Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis |
| title_full | Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis |
| title_fullStr | Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis |
| title_full_unstemmed | Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis |
| title_short | Foliar Application of Zn Alleviates Salt Stress Symptoms of Pak Choi Plants by Activating Water Relations and Glucosinolate Synthesis |
| title_sort | foliar application of zn alleviates salt stress symptoms of pak choi plants by activating water relations and glucosinolate synthesis |
| topic | Micronutrients foliar fertilization salinity secondary metabolism <i>Brassica campestris</i> L., gas exchange |
| url | https://www.mdpi.com/2073-4395/10/10/1528 |
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