| Effects of 24-Epibrassinolide on Antioxidant System in Cucumber Seedling Roots Under Hypoxia Stress |
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| 作者单位： | KANG Yun-yan（College of Horticulture, Nanjing Agricultural University, Nanjing 210095, P.R. China） ;GUO Shi-rong（College of Horticulture, Nanjing Agricultural University, Nanjing 210095, P.R. China） ;LI Juan （College of Horticulture, Nanjing Agricultural University, Nanjing 210095, P.R. China） ;DUAN Jiu-ju（College of Horticulture, Nanjing Agricultural University, Nanjing 210095, P.R. China） ; |
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| 摘 要： |
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| 关 键 词： | 黄瓜 幼苗 缺氧 抗氧化剂 |
Effects of 24-Epibrassinolide on Antioxidant System in Cucumber Seedling Roots Under Hypoxia Stress |
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| KANG Yun-yan,GUO Shi-rong,LI Juan,DUAN Jiu-ju. Effects of 24-Epibrassinolide on Antioxidant System in Cucumber Seedling Roots Under Hypoxia Stress[J]. 《Agricultural Sciences in China》, 2007, 6(3): 281-289. DOI: 10.1016/S1671-2927(07)60046-7 |
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| Authors: | KANG Yun-yan GUO Shi-rong LI Juan DUAN Jiu-ju |
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| Affiliation: | College of Horticulture, Nanjing Agricultural University, Nanjing 210095, P.R. China |
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| Abstract: | This article aims to study the effects of exogenous 24-epibrassinolide (EBR) on the changes in ROS, activities of antioxidative enzymes and antioxidants in cucumber (Cucumis sativus L.) seedling roots under hypoxia stress. Seedlings of a hypoxianormoxic or hypoxic nutrient solutions that were added or not added with 10-3 mg L-1 EBR. Under hypoxia stress, the ROS levels and the lipid peroxidation were significantly increased in the roots upon exposure to hypoxia stress, which were inhibited by EBR application. The EBR treatment significantly increased the seedlings growth and SOD, APX, GR activities, and contents of AsA and GSH under hypoxia stress. From the results obtained in this study, it can be concluded that oxidative damage on seedling roots by hypoxia stress can be considerably alleviated and the tolerance of plants was elevated. |
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| Keywords: | cucumber (Cucumis sativus L.) 24-epibrassinolide seedlings hypoxia stress antioxidative system lipid peroxidation |
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