Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i>
Soil salinization is an increasing agricultural problem around the world, affecting crop productivity and quality. Seed germination and seedling establishment are susceptible to salt stress. <i>Suaeda liaotungensis</i> is a halophyte with strong salt tolerance that produces dimorphic see...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/12/6/1408 |
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| author | Jieqiong Song Hongfei Wang Ruowen Chu Lantong Zhao Xinxin Li Shuo An Mengke Qiang Wanying Du Qiuli Li |
| author_facet | Jieqiong Song Hongfei Wang Ruowen Chu Lantong Zhao Xinxin Li Shuo An Mengke Qiang Wanying Du Qiuli Li |
| author_sort | Jieqiong Song |
| collection | DOAJ |
| description | Soil salinization is an increasing agricultural problem around the world, affecting crop productivity and quality. Seed germination and seedling establishment are susceptible to salt stress. <i>Suaeda liaotungensis</i> is a halophyte with strong salt tolerance that produces dimorphic seeds to adapt to the saline environment. Differences in physiological characteristics, seed germination, and seedling establishment in response to salt stress between dimorphic seeds in <i>S. liaotungensis</i> have not been reported. The results showed that brown seeds had significantly higher H<sub>2</sub>O<sub>2</sub> and O<sub>2</sub><sup>−</sup>. levels and betaine content, as well as POD and CAT activities, while they had significantly lower MDA and proline contents and SOD activity than black seeds. Light promoted the germination of brown seeds in a certain temperature range, and brown seeds could reach a higher germination percentage in a wide temperature range. However, light and temperature had no effect on the germination percentage of black seeds. Brown seeds had higher germination than black seeds under the same NaCl concentration. The final germination of brown seeds was significantly decreased as salt concentration increased, whereas this had no effect on the final germination of black seeds. POD and CAT activities, as well as MDA content, in brown seeds were significantly higher than those in black seeds during germination under salt stress. Additionally, the seedlings from brown seeds were more tolerant to salinity than those from black seeds. Therefore, these results will give an in-depth understanding of the adaptation strategies of dimorphic seeds to a salinization environment, and better exploitation and utilization of <i>S. liaotungensis</i>. |
| first_indexed | 2024-03-11T06:00:29Z |
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| language | English |
| last_indexed | 2024-03-11T06:00:29Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-af049a2160f34bd5aad55a412b86fe082023-11-17T13:23:30ZengMDPI AGPlants2223-77472023-03-01126140810.3390/plants12061408Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i>Jieqiong Song0Hongfei Wang1Ruowen Chu2Lantong Zhao3Xinxin Li4Shuo An5Mengke Qiang6Wanying Du7Qiuli Li8Key Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaKey Laboratory of Plant Biotechnology of Liaoning Province, School of Life Sciences, Liaoning Normal University, Dalian 116081, ChinaSoil salinization is an increasing agricultural problem around the world, affecting crop productivity and quality. Seed germination and seedling establishment are susceptible to salt stress. <i>Suaeda liaotungensis</i> is a halophyte with strong salt tolerance that produces dimorphic seeds to adapt to the saline environment. Differences in physiological characteristics, seed germination, and seedling establishment in response to salt stress between dimorphic seeds in <i>S. liaotungensis</i> have not been reported. The results showed that brown seeds had significantly higher H<sub>2</sub>O<sub>2</sub> and O<sub>2</sub><sup>−</sup>. levels and betaine content, as well as POD and CAT activities, while they had significantly lower MDA and proline contents and SOD activity than black seeds. Light promoted the germination of brown seeds in a certain temperature range, and brown seeds could reach a higher germination percentage in a wide temperature range. However, light and temperature had no effect on the germination percentage of black seeds. Brown seeds had higher germination than black seeds under the same NaCl concentration. The final germination of brown seeds was significantly decreased as salt concentration increased, whereas this had no effect on the final germination of black seeds. POD and CAT activities, as well as MDA content, in brown seeds were significantly higher than those in black seeds during germination under salt stress. Additionally, the seedlings from brown seeds were more tolerant to salinity than those from black seeds. Therefore, these results will give an in-depth understanding of the adaptation strategies of dimorphic seeds to a salinization environment, and better exploitation and utilization of <i>S. liaotungensis</i>.https://www.mdpi.com/2223-7747/12/6/1408<i>Suaeda liaotungensis</i>dimorphic seedssalt stressphysiological indexseed germinationseedling growth |
| spellingShingle | Jieqiong Song Hongfei Wang Ruowen Chu Lantong Zhao Xinxin Li Shuo An Mengke Qiang Wanying Du Qiuli Li Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i> Plants <i>Suaeda liaotungensis</i> dimorphic seeds salt stress physiological index seed germination seedling growth |
| title | Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i> |
| title_full | Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i> |
| title_fullStr | Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i> |
| title_full_unstemmed | Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i> |
| title_short | Differences in Physiological Characteristics, Seed Germination, and Seedling Establishment in Response to Salt Stress between Dimorphic Seeds in the Halophyte <i>Suaeda liaotungensis</i> |
| title_sort | differences in physiological characteristics seed germination and seedling establishment in response to salt stress between dimorphic seeds in the halophyte i suaeda liaotungensis i |
| topic | <i>Suaeda liaotungensis</i> dimorphic seeds salt stress physiological index seed germination seedling growth |
| url | https://www.mdpi.com/2223-7747/12/6/1408 |
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