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| 盐胁迫下外源硅调节金丝小枣根和叶片膜脂肪酸的研究 | |
| 引用本文： | 徐呈祥,马艳萍,徐锡增,胡恒康.盐胁迫下外源硅调节金丝小枣根和叶片膜脂肪酸的研究[J].南京林业大学学报(自然科学版),2006,30(2):89-93. |
| 作者姓名： | 徐呈祥 马艳萍 徐锡增 胡恒康 |
| 作者单位： | 1. 南京林业大学森林资源与环境学院,江苏,南京,210037;金陵科技学院园艺系,江苏,南京,210038 2. 金陵科技学院园艺系,江苏,南京,210038 3. 南京林业大学森林资源与环境学院,江苏,南京,210037 |
| 摘 要： | 以2年生金丝小枣为试材,研究了NaCl胁迫下施硅(Si)与金丝小枣的根和叶片膜脂肪酸含量、组成及流动性的关系。结果表明:NaCl胁迫165 d,加硅与不加硅相比,金丝小枣根的饱和脂肪酸含量降低,不饱和脂肪酸含量升高,脂肪酸不饱和指数增大,膜流动性增强,碳链长度保持稳定;而在叶中则呈相反趋势。说明外源硅可调节盐(NaCl)胁迫下金丝小枣细胞膜脂肪酸含量、组成及流动性,该效应与金丝小枣器官的生理功能和生长特性有关。 |
| 关 键 词： | 硅 NaCl胁迫 金丝小枣 膜脂肪酸 膜流动性 |
| 文章编号： | 1000-2006(2006)02-0089-05 |
| 收稿时间： | 2005-11-01 |
| 修稿时间： | 2006-02-16 |
Exogenous Silicon Regulates Membrane Fatty Acid in Root and Leaf of Ziziphus jujuba cv. Jinsixiaozao under Salt Stress |
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| XU Cheng-xiang,MA Yan-ping,XU Xi-zeng,HU Heng-kang.Exogenous Silicon Regulates Membrane Fatty Acid in Root and Leaf of Ziziphus jujuba cv. Jinsixiaozao under Salt Stress[J].Journal of Nanjing Forestry University(Natural Sciences ),2006,30(2):89-93. | |
| Authors: | XU Cheng-xiang MA Yan-ping XU Xi-zeng HU Heng-kang |
| Institution: | 1. College of Forest Resources and Environment Nanjing Forestry University, Nanjing 210037 ,China; 2. Department of Horticulture J inling College of Science and Technology, Nanjing 210038,China |
| Abstract: | Effects of silicon(Si) on membrane fatty acid content,composition and fluidity in root and leaf of two-year old seedlings of Ziziphus jujuba cv.Jinsixiaozao under salt stress were studied.The results showed that the addition of Si had different effects on these parameters in root and leaf of the plant under NaCl stress: in root,the saturate fatty acid content decreased with added Si compared with that of no Si addition.Both the membrane unsaturate fatty acid content and the index of unsaturate fatty acid of the root were promoted under NaCl stress with Si addition,but the effects of exogenous Si on membrane fatty acid(MFA) content and composition of the leaf were contrary to those of in root.The results from this study suggestes that Si regulates the content,composition and fluidity of Ziziphus jujuba cv.Jinsixiaozao under NaCl stress,which is closely related to the physiological functions and growth characteristics of the plant organs. |
| Keywords: | Si NaCl stress Ziziphusjujuba cv Jinsixiaozao Membrane fatty acid Membrane fluidity |
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