Dry Cultivation of Rice (Oryza sativa L.) Enhances Drought Resistance by Modulating Root System Architecture, Antioxidant Potential and Sugar Metabolism.
Saved in:
| Title: | Dry Cultivation of Rice (Oryza sativa L.) Enhances Drought Resistance by Modulating Root System Architecture, Antioxidant Potential and Sugar Metabolism. |
|---|---|
| Authors: | Ma, Xintong1 (AUTHOR), Wang, Yi1 (AUTHOR), Li, Liangdong1 (AUTHOR), Yu, Kuo1 (AUTHOR), Zhang, Jing1 (AUTHOR), Yan, Fengqing1 (AUTHOR), Wei, Xiaoshuang1 (AUTHOR), Tian, Ping1 (AUTHOR), Yang, Meiying2 (AUTHOR), Wu, Zhihai1,3 (AUTHOR) wuzhihai@jlau.edu.cn |
| Source: | Journal of Agronomy & Crop Science. May2025, Vol. 211 Issue 3, p1-11. 11p. |
| Subjects: | Drought tolerance, Dry farming, Plant roots, Antioxidants, Photosynthesis, Rice, Food security, Glucose metabolism |
| Abstract: | Rice is one of the world's major staple crops. Against the balance of population growth and water scarcity, improving drought resistance and yield of rice is essential for food security. However, the understanding remains limited regarding photosynthesis, antioxidant mechanisms and carbohydrate partitioning in the leaves and roots of rice under drought conditions. Based on our previous findings, this study compared the drought‐resistant variety (Changjing616, CJ) and the drought‐sensitive variety (Lianyu1013, LY) under flooding and dry cultivations. Our results revealed that CJ maintained comparable yields to those under flooding cultivation, whereas LY experienced a significant decline in yield. Furthermore, we demonstrated that CJ sustained a higher photosynthetic rate and enhanced the activities of antioxidant enzymes under dry cultivation. In terms of root morphology, CJ showed significant improvement in key growth parameters under dry cultivation, while LY demonstrated a significant decline in these characteristics. The sugar contents and the activities of related enzymes in both the leaves and roots of CJ were notably enhanced by dry cultivation. Notably, the correlations between root systems and sugar metabolism varied between the two cultivation methods. In addition, the study identified that the increased R/S ratio, resulting from alterations in sugar metabolism under dry cultivation, significantly contributed to the drought resistance of rice. Collectively, these findings elucidate the pivotal role of sugar metabolism in enhancing the drought tolerance of rice under dry cultivation practices. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Agronomy & Crop Science is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | Rice is one of the world's major staple crops. Against the balance of population growth and water scarcity, improving drought resistance and yield of rice is essential for food security. However, the understanding remains limited regarding photosynthesis, antioxidant mechanisms and carbohydrate partitioning in the leaves and roots of rice under drought conditions. Based on our previous findings, this study compared the drought‐resistant variety (Changjing616, CJ) and the drought‐sensitive variety (Lianyu1013, LY) under flooding and dry cultivations. Our results revealed that CJ maintained comparable yields to those under flooding cultivation, whereas LY experienced a significant decline in yield. Furthermore, we demonstrated that CJ sustained a higher photosynthetic rate and enhanced the activities of antioxidant enzymes under dry cultivation. In terms of root morphology, CJ showed significant improvement in key growth parameters under dry cultivation, while LY demonstrated a significant decline in these characteristics. The sugar contents and the activities of related enzymes in both the leaves and roots of CJ were notably enhanced by dry cultivation. Notably, the correlations between root systems and sugar metabolism varied between the two cultivation methods. In addition, the study identified that the increased R/S ratio, resulting from alterations in sugar metabolism under dry cultivation, significantly contributed to the drought resistance of rice. Collectively, these findings elucidate the pivotal role of sugar metabolism in enhancing the drought tolerance of rice under dry cultivation practices. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 09312250 |
| DOI: | 10.1111/jac.70072 |
