Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings
(1) Background: Cinnamic acid (CA) is a harmful substance secreted by the roots of continuous-cropping crops. (2) Methods: This study aimed to investigate how exogenous Si affects chlorophyll content and carbon metabolism in cucumber seedlings under CA-induced stress. (3) Results: The levels of chlo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/7/1569 |
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| author | Jian Lyu Li Jin Xin Meng Ning Jin Shuya Wang Linli Hu Guobin Zhang Yue Wu Shilei Luo Jihua Yu |
| author_facet | Jian Lyu Li Jin Xin Meng Ning Jin Shuya Wang Linli Hu Guobin Zhang Yue Wu Shilei Luo Jihua Yu |
| author_sort | Jian Lyu |
| collection | DOAJ |
| description | (1) Background: Cinnamic acid (CA) is a harmful substance secreted by the roots of continuous-cropping crops. (2) Methods: This study aimed to investigate how exogenous Si affects chlorophyll content and carbon metabolism in cucumber seedlings under CA-induced stress. (3) Results: The levels of chlorophyll a, chlorophyll b, chlorophyll a+b, and carotenoids were significantly reduced due to CA-induced stress. The addition of exogenous Si significantly alleviated this reduction. Under CA-induced stress, exogenous Si significantly increased the activities of ribulose-1,5-bisphosphate carboxylase, glyceraldehyde-3-phosphate dehydrogenase, fructose-1,6-bisphosphatase, fructose-1,6-bisphosphate aldolase, and transketolase. CA-induced stress significantly increased the fructose, glucose, and sucrose contents and reduced the starch content in the leaves and roots of seedlings. Similarly, the sucrose phosphate synthase, sucrose synthase, acid invertase, and neutral invertase activities were significantly reduced in plants under CA-induced stress. Overall, exogenous Si significantly reduced the soluble sugar content, increased the starch content, and promoted sucrose metabolism-related enzymatic activity in seedlings. (4) Conclusion: Exogenous Si can effectively increase the content of photosynthetic pigments in leaves of seedlings and maintain the balance of osmotic potential in the plant by reducing the accumulation of carbon assimilation products, which ultimately promotes tolerance to CA-induced autotoxicity stress. |
| first_indexed | 2024-03-09T10:24:31Z |
| format | Article |
| id | doaj.art-a6a622cef1cb4ba6adf15b94b6a8d71c |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T10:24:31Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-a6a622cef1cb4ba6adf15b94b6a8d71c2023-12-01T21:47:06ZengMDPI AGAgronomy2073-43952022-06-01127156910.3390/agronomy12071569Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber SeedlingsJian Lyu0Li Jin1Xin Meng2Ning Jin3Shuya Wang4Linli Hu5Guobin Zhang6Yue Wu7Shilei Luo8Jihua Yu9College of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, ChinaCollege of Horticulture, Gansu Agricultural University, Lanzhou 730070, China(1) Background: Cinnamic acid (CA) is a harmful substance secreted by the roots of continuous-cropping crops. (2) Methods: This study aimed to investigate how exogenous Si affects chlorophyll content and carbon metabolism in cucumber seedlings under CA-induced stress. (3) Results: The levels of chlorophyll a, chlorophyll b, chlorophyll a+b, and carotenoids were significantly reduced due to CA-induced stress. The addition of exogenous Si significantly alleviated this reduction. Under CA-induced stress, exogenous Si significantly increased the activities of ribulose-1,5-bisphosphate carboxylase, glyceraldehyde-3-phosphate dehydrogenase, fructose-1,6-bisphosphatase, fructose-1,6-bisphosphate aldolase, and transketolase. CA-induced stress significantly increased the fructose, glucose, and sucrose contents and reduced the starch content in the leaves and roots of seedlings. Similarly, the sucrose phosphate synthase, sucrose synthase, acid invertase, and neutral invertase activities were significantly reduced in plants under CA-induced stress. Overall, exogenous Si significantly reduced the soluble sugar content, increased the starch content, and promoted sucrose metabolism-related enzymatic activity in seedlings. (4) Conclusion: Exogenous Si can effectively increase the content of photosynthetic pigments in leaves of seedlings and maintain the balance of osmotic potential in the plant by reducing the accumulation of carbon assimilation products, which ultimately promotes tolerance to CA-induced autotoxicity stress.https://www.mdpi.com/2073-4395/12/7/1569<i>Cucumis sativus</i>Sicinnamic-acid-induced stressphotosynthetic pigmentscarbon metabolism |
| spellingShingle | Jian Lyu Li Jin Xin Meng Ning Jin Shuya Wang Linli Hu Guobin Zhang Yue Wu Shilei Luo Jihua Yu Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings Agronomy <i>Cucumis sativus</i> Si cinnamic-acid-induced stress photosynthetic pigments carbon metabolism |
| title | Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings |
| title_full | Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings |
| title_fullStr | Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings |
| title_full_unstemmed | Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings |
| title_short | Exogenous Si Mitigates the Effects of Cinnamic-Acid-Induced Stress by Regulating Carbon Metabolism and Photosynthetic Pigments in Cucumber Seedlings |
| title_sort | exogenous si mitigates the effects of cinnamic acid induced stress by regulating carbon metabolism and photosynthetic pigments in cucumber seedlings |
| topic | <i>Cucumis sativus</i> Si cinnamic-acid-induced stress photosynthetic pigments carbon metabolism |
| url | https://www.mdpi.com/2073-4395/12/7/1569 |
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