| 铝对芥菜( Brassica juncea Coss) 幼苗根系形态和叶内抗氧化系统的影响 |
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| 引用本文： | 李朝苏,刘鹏,徐根娣,林辉君.铝对芥菜( Brassica juncea Coss) 幼苗根系形态和叶内抗氧化系统的影响[J].园艺学报,2006,33(3):645-648. |
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| 作者姓名： | 李朝苏 刘鹏 徐根娣 林辉君 |
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| 作者单位： | (浙江师范大学植物学重点实验室, 浙江金华321004) |
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| 基金项目： | 国家自然科学基金;浙江省自然科学基金 |
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| 摘 要： | 研究了沙培条件下铝对两个芥菜品种‘雪里蕻’和‘花芥菜’幼苗根系形态和叶生理特性的影响。结果表明, 1 mg·L - 1和10 mg·L - 1 Al3 +在短时间内能够促进两种芥菜根系生长, 并降低花芥菜叶内MDA的含量。随着铝处理浓度的增加和处理时间的延长, 芥菜根系生长受到抑制, 叶内MDA含量增加, 同时POD和CAT活性升高, 但不同品种芥菜叶内AsA、GSH含量和SOD活性对铝胁迫的反应不同。研究结果说明低浓度铝在短时期内对芥菜生长有促进作用, 但处理时间的延长会抑制芥菜的生长, 在铝胁迫下芥菜体内抗氧化酶活性升高可以提高其铝适应性。
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| 关 键 词： | 雪里蕻 花芥菜 铝 根系形态 活性氧 抗氧化系统 |
| 文章编号： | 0513-353（2006）03-0645-04 |
| 收稿时间： | 2005-08-22 |
| 修稿时间： | 2005-08-222005-11-30 |
Effects of Aluminum on Root Morphology and Antioxidant System in Leaves of Mustard (Brassica juncea Coss) Seedlings |
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| Li Chaosu,Liu Peng,Xu Gendi,Lin Huijun.Effects of Aluminum on Root Morphology and Antioxidant System in Leaves of Mustard (Brassica juncea Coss) Seedlings[J].Acta Horticulturae Sinica,2006,33(3):645-648. |
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| Authors: | Li Chaosu Liu Peng Xu Gendi Lin Huijun |
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| Institution: | ( Key Laboratory of Botany, Zhejiang Normal University, Jinhua, Zhejiang 321004, China) |
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| Abstract: | Two mustard varieties’ (Brassica juncea var. multiceps Tsen et Lee and Brassica juncea var. crispifolia Bailey) seedlings were cultured in sand which was dipped in nutrient solution added different concentrations of aluminum (0, 1, 10, 100 mg·L - 1 Al3 + ). The change of the rootmorphology and the contentof MDA, AsA and GSH aswell as POD, CAT and SOD activities in leaves were determined. The result indicated that lower concentrations of aluminum (1 mg·L - 1 and 10 mg·L - 1 ) could promote the root growth and decrease the MDA content in two mustard varieties'leaves on the 15th day. With increase of aluminum, the root growth was inhibited and the MDA content in two varieties'leaves was increased compared with the control, and the activities of POD and CAT were also promoted obviously, but the response of AsA and GSH content aswell as SOD activity in different varieties were different to aluminum stress. It is suggested that lower aluminum concentrations could promote the growth of mustard seedlings in a short time. Antioxidant enzymesplayed an important part in resisting aluminum. |
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| Keywords: | Brassica juncea var multiceps Tsen et Lee Brassica juncea var crispifolia Bailey Aluminum Root morphology Reactive oxygen species Antioxidant system |
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