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Mutation of the OsSCYL2 gene enhances drought tolerance in rice
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Qiyan HU1, 2, Can CHENG2, Jianming ZHANG2, Jihua ZHOU2, Fu'an NIU2, Bin SUN2, Anpeng ZHANG2, Yuting DAI2, Kaizhen XIE2, 3, Yue QIU2, 4, Xiaorui DING2, 4, Hongyu LI1, 2, Zhizun FENG2, Liming CAO2, Zhipeng ZHAO5, *, Huangwei CHU2, *
Plant Physiology Journal | 2026, 62(7) : 758 - 768
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Plant Physiology Journal | 2026, 62(7): 758-768
• Research Article •
Mutation of the OsSCYL2 gene enhances drought tolerance in rice
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Qiyan HU1, 2, Can CHENG2, Jianming ZHANG2, Jihua ZHOU2, Fu'an NIU2, Bin SUN2, Anpeng ZHANG2, Yuting DAI2, Kaizhen XIE2, 3, Yue QIU2, 4, Xiaorui DING2, 4, Hongyu LI1, 2, Zhizun FENG2, Liming CAO2, Zhipeng ZHAO5, *, Huangwei CHU2, *
Affiliations
  • 1College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
  • 2Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain and Oil Crops (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
  • 3College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
  • 4College of Life Sciences, Shanghai Normal University, Shanghai 201418, China
  • 5Shanghai Agricultural Science and Technology Service Center, Shanghai 200335, China
Published: 2026-07-20 doi: 10.13592/j.cnki.ppj.100962
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OsSCYL2 gene, a member of the SCY1-LIKE gene family in rice, encodes a protein that interacts with clathrin heavy chain 1 (CHC1) and localizes to the clathrin-coated vesicles. In this study, the drought tolerance of OsSCYL2 mutants, scyl2-1 and scyl2-2, was analyzed. The results showed that compared with the wild-type ‘Xiushui 134’, the mutant plants had a higher degree of stomatal closure on leaf surfaces, lower water loss rate in detached leaves, and higher water content under drought stress conditions. The drought tolerance of the scyl2 mutants was significantly enhanced as compared with the wild-type. The response to ABA treatment in the scyl2 mutants was not significantly different from the wild-type, and the endogenous ABA content in the mutants was significantly decreased compared with the wild-type, indicating that the enhanced drought tolerance in the mutants is not dependent on ABA signaling. The H2O2 content in the leaves of scyl2 increased, especially in the guard cells of stomata. The expression levels of multiple Osrboh genes encoding NADPH oxidases increased, indicating that the OsSCYL2 gene-mediated signaling pathway regulates rice drought stress response by negatively regulating the expression of Osrboh genes. These findings provide new insights into the molecular regulatory mechanisms of rice in response to drought stress.

rice  /  drought tolerance  /  OsSCYL2  /  abiotic stress  /  drought stress
胡启琰, 程灿, 张建明, 周继华, 牛付安, 孙滨, 张安鹏, 代雨婷, 谢开珍, 邱越, 丁晓瑞, 李红玉, 冯智尊, 曹黎明, 赵志鹏, 储黄伟. OsSCYL2基因的突变增强水稻耐旱性. 植物生理学报, 2026 , 62 (7) : 758 -768 . DOI: 10.13592/j.cnki.ppj.100962
Qiyan HU, Can CHENG, Jianming ZHANG, Jihua ZHOU, Fu'an NIU, Bin SUN, Anpeng ZHANG, Yuting DAI, Kaizhen XIE, Yue QIU, Xiaorui DING, Hongyu LI, Zhizun FENG, Liming CAO, Zhipeng ZHAO, Huangwei CHU. Mutation of the OsSCYL2 gene enhances drought tolerance in rice[J]. Plant Physiology Journal, 2026 , 62 (7) : 758 -768 . DOI: 10.13592/j.cnki.ppj.100962
Appendix
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Year 2026 volume 62 Issue 7
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Article Info
doi: 10.13592/j.cnki.ppj.100962
  • Receive Date：2024-03-22
  • Online Date：2026-10-15
  • Published：2026-07-20
Article Data
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History
  • Received：2024-03-22
  • Revised：2024-10-11
Funding
Affiliations
    1College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China
    2Key Laboratory of Germplasm Innovation and Genetic Improvement of Grain and Oil Crops (Co-Construction by Ministry and Province), Ministry of Agriculture and Rural Affairs, Shanghai Academy of Agricultural Sciences, Shanghai 201403, China
    3College of Agronomy, Jiangxi Agricultural University, Nanchang 330045, China
    4College of Life Sciences, Shanghai Normal University, Shanghai 201418, China
    5Shanghai Agricultural Science and Technology Service Center, Shanghai 200335, China

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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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