| 模拟水体镉污染对水稻幼苗某些酶类活性的影响 |
| |
| 引用本文： | 白嵩.模拟水体镉污染对水稻幼苗某些酶类活性的影响[J].河北农业大学学报,2006,29(2):1-3,8. |
| |
| 作者姓名： | 白嵩 |
| |
| 作者单位： | 广东省农业科学院,水稻研究所,广东,广州,510640 |
| |
| 基金项目： | 国家农业科技跨越计划项目(99-01-02) |
| |
| 摘 要： | 试验采用不同浓度(0.0、0.1、1.0、101、00 mg/L)的Cd2+溶液模拟水体镉污染,研究Cd2+对水稻种子萌发和幼苗生长期间两类酶活性的影响。结果表明,参与物质代谢的3种酶活性受Cd2+抑制,且随Cd2+处理浓度的升高而明显降低,降低的幅度是:淀粉酶(AMY)10.44%~57.14%,脱氢酶(DHG)11.93%~53.39%,硝酸还原酶(NR)14.65%~54.06%。与此相反,Cd2+对抗氧化酶类活性却有明显的刺激作用:超氧化物歧化酶(SOD)活性提高32.84%~133.65%,过氧化物酶(POD)活性提高31.28%~133.66%,过氧化氢酶(CAT)活性提高33.22%~120.62%。抗氧化酶类消除了活性氧的氧化作用,从而避免或减轻了活性氧对细胞结构的破坏。
|
| 关 键 词： | 水体镉污染 水稻幼苗 参与物质代谢的酶类 抗氧化酶类 |
| 文章编号： | 1000-1573（2006）02-0001-03 |
| 收稿时间： | 2005-11-14 |
| 修稿时间： | 2005-11-14 |
Effect of simulative water cadmium pollution on some enzymes activity in rice seedlings |
| |
| BAI Song.Effect of simulative water cadmium pollution on some enzymes activity in rice seedlings[J].Journal of Agricultural University of Hebei,2006,29(2):1-3,8. |
| |
| Authors: | BAI Song |
| |
| Institution: | Rice Research Institute, Guangdortg Academy of Agricultural Sciences, Guangzhou 510640, China |
| |
| Abstract: | The effect of simulative water Cd~(2+) pollution on the activity of some enzymes during seed germination and seedling growth of rice were studied.The seeds and seedlings of rice were treated by 0,0.1,1,10,100 mg/L Cd~(2+) solution.The activity of three enzymes for substance metabolism were significantly inhibited by Cd~(2+).The activity of amylase(AMY),dehydrogenase(DHG) and nitrate reductase(NR) decreased by 10.44%～57.14%,11.93%～53.39% and 14.65%～54.06%,respectively.The Cd~(2+) stimulated antioxidant enzymes: activity of superoxide dismutase(SOD),peroxidase(POD) and catalase(CAT) increased by 32.84%～133.65%,31.28%～133.66% and 33.22%～120.62%,respectively.The three antioxidant enzymes eliminated oxidation of active oxygen and protected cell structure. |
| |
| Keywords: | water Cd~(2 ) pollution rice seedlings enzymes for substance metabolism antioxidant enzymes |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
