Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i>
Increasing soil salinity suppresses both productivity and fiber quality of cotton, thus, an appropriate management approach needs to be developed to lessen the detrimental effect of salinity stress. This study assessed two cotton genotypes with different salt sensitivities to investigate the possibl...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-04-01
|
| Series: | Plants |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2223-7747/9/4/450 |
| _version_ | 1797571518876614656 |
|---|---|
| author | Ripon Kumar Sikder Xiangru Wang Hengheng Zhang Huiping Gui Qiang Dong Dingsha Jin Meizhen Song |
| author_facet | Ripon Kumar Sikder Xiangru Wang Hengheng Zhang Huiping Gui Qiang Dong Dingsha Jin Meizhen Song |
| author_sort | Ripon Kumar Sikder |
| collection | DOAJ |
| description | Increasing soil salinity suppresses both productivity and fiber quality of cotton, thus, an appropriate management approach needs to be developed to lessen the detrimental effect of salinity stress. This study assessed two cotton genotypes with different salt sensitivities to investigate the possible role of nitrogen supplementation at the seedling stage. Salt stress induced by sodium chloride (NaCl, 200 mmol·L<sup>−1</sup>) decreased the growth traits and dry mass production of both genotypes. Nitrogen supplementation increased the plant water status, photosynthetic pigment synthesis, and gas exchange attributes. Addition of nitrogen to the saline media significantly decreased the generation of lethal oxidative stress biomarkers such as hydrogen peroxide, lipid peroxidation, and electrolyte leakage ratio. The activity of the antioxidant defense system was upregulated in both saline and non-saline growth media as a result of nitrogen application. Furthermore, nitrogen supplementation enhanced the accumulation of osmolytes, such as soluble sugars, soluble proteins, and free amino acids. This established the beneficial role of nitrogen by retaining additional osmolality to uphold the relative water content and protect the photosynthetic apparatus, particularly in the salt-sensitive genotype. In summary, nitrogen application may represent a potential strategy to overcome the salinity-mediated impairment of cotton to some extent. |
| first_indexed | 2024-03-10T20:41:09Z |
| format | Article |
| id | doaj.art-8c8dacf7aecf4e0a9f608ef424aa489b |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-10T20:41:09Z |
| publishDate | 2020-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-8c8dacf7aecf4e0a9f608ef424aa489b2023-11-19T20:39:01ZengMDPI AGPlants2223-77472020-04-019445010.3390/plants9040450Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i>Ripon Kumar Sikder0Xiangru Wang1Hengheng Zhang2Huiping Gui3Qiang Dong4Dingsha Jin5Meizhen Song6State Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaState Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaState Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaState Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaState Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaState Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaState Key Laboratory of Cotton Biology, Institute of Cotton Research, Chinese Academy of Agricultural Sciences, Anyang 455000, Henan, ChinaIncreasing soil salinity suppresses both productivity and fiber quality of cotton, thus, an appropriate management approach needs to be developed to lessen the detrimental effect of salinity stress. This study assessed two cotton genotypes with different salt sensitivities to investigate the possible role of nitrogen supplementation at the seedling stage. Salt stress induced by sodium chloride (NaCl, 200 mmol·L<sup>−1</sup>) decreased the growth traits and dry mass production of both genotypes. Nitrogen supplementation increased the plant water status, photosynthetic pigment synthesis, and gas exchange attributes. Addition of nitrogen to the saline media significantly decreased the generation of lethal oxidative stress biomarkers such as hydrogen peroxide, lipid peroxidation, and electrolyte leakage ratio. The activity of the antioxidant defense system was upregulated in both saline and non-saline growth media as a result of nitrogen application. Furthermore, nitrogen supplementation enhanced the accumulation of osmolytes, such as soluble sugars, soluble proteins, and free amino acids. This established the beneficial role of nitrogen by retaining additional osmolality to uphold the relative water content and protect the photosynthetic apparatus, particularly in the salt-sensitive genotype. In summary, nitrogen application may represent a potential strategy to overcome the salinity-mediated impairment of cotton to some extent.https://www.mdpi.com/2223-7747/9/4/450cottonNaCl stressnitrogenantioxidant defense systemosmotic adjustment |
| spellingShingle | Ripon Kumar Sikder Xiangru Wang Hengheng Zhang Huiping Gui Qiang Dong Dingsha Jin Meizhen Song Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i> Plants cotton NaCl stress nitrogen antioxidant defense system osmotic adjustment |
| title | Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i> |
| title_full | Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i> |
| title_fullStr | Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i> |
| title_full_unstemmed | Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i> |
| title_short | Nitrogen Enhances Salt Tolerance by Modulating the Antioxidant Defense System and Osmoregulation Substance Content in <i>Gossypium hirsutum</i> |
| title_sort | nitrogen enhances salt tolerance by modulating the antioxidant defense system and osmoregulation substance content in i gossypium hirsutum i |
| topic | cotton NaCl stress nitrogen antioxidant defense system osmotic adjustment |
| url | https://www.mdpi.com/2223-7747/9/4/450 |
| work_keys_str_mv | AT riponkumarsikder nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi AT xiangruwang nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi AT henghengzhang nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi AT huipinggui nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi AT qiangdong nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi AT dingshajin nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi AT meizhensong nitrogenenhancessalttolerancebymodulatingtheantioxidantdefensesystemandosmoregulationsubstancecontentinigossypiumhirsutumi |