| 水分胁迫对小麦叶绿体膜脂过氧化的影响 |
| |
| 引用本文： | 周国顺,刘自华,李建东,王邦锡,黄久常.水分胁迫对小麦叶绿体膜脂过氧化的影响[J].北京农学院学报,2003,18(2):86-88. |
| |
| 作者姓名： | 周国顺 刘自华 李建东 王邦锡 黄久常 |
| |
| 作者单位： | 1. 唐山市农业科学研究所,唐山,063001
2. 兰州大学植物生理研究室,兰州,730000 |
| |
| 基金项目： | 河北省唐山市科技局博硕基金;; |
| |
| 摘 要： | 小麦幼苗在 - 0 2MPaPEG根际渗透胁迫 2 4h后 ,分离叶绿体的MDA含量升高、SOD活性增加。类囊体膜脂肪酸组分中亚麻酸含量显著降低 ,脂肪酸不饱和指数下降 ,磷脂组分中PG含量大幅度降低。同时 ,叶绿体内和类囊体膜联结的LOX活性升高 ,表明水分胁迫对小麦叶绿体膜的损伤与自由基导致的膜脂过氧化和LOX导致的酶促氧化有关
|
| 关 键 词： | 渗透胁迫 自由基 叶绿体 膜脂过氧化 脂氧合酶 |
| 文章编号： | 1002-3186(2003)02-0086-03 |
| 修稿时间： | 2003年1月8日 |
Effect of Water Stress on Membrane Lipid Peroxidation of Chloroplast from Wheat |
| |
| ZHOU Guo,Shun.Effect of Water Stress on Membrane Lipid Peroxidation of Chloroplast from Wheat[J].Journal of Beijing Agricultural College,2003,18(2):86-88. |
| |
| Authors: | ZHOU Guo Shun |
| |
| Abstract: | After osmotic stress for young wheat seedling roots grown under -0.2MPa PEG were carried out for 24h, it was observed that the malondialdehyde contents from isolated chloroplast as well as activity of superoxide dismutase increased. Among the fatty acid components of thylakoid membrane, linolenic acid and PG contents from phospholipid decreased significiently, and unsaturated fatty acid index also inclined. The increasing of LOX activity in chloroplast and thylakoid membrane showed that there were correlative relationships among wheat chloroplast membrane damage under condition of water stress, membrane lipid peroxidation caused by free radicals, and oxide reaction caused by LOX. |
| |
| Keywords: | osmotic stress free radicals chloroplast membrane lipid peroxidation lipoxigenase |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
