| 摘要: |
| 以大豆下胚轴切段为材料,研究了质膜氧化还原系统对其伸长生长的作用,结果表明,NADH氧化酶活性与大豆下胚轴伸长生长相关性极显著(R= 0. 94,P= 0. 01),而NADH-Fe(CN)63-氧化还原酶活性与其相关性不显著。大豆下胚轴伸长生长最快的第一切段,其NADH氧化酶活性最高。第一切段的伸长生长及NADH氧化酶对IAA均有明显的正负反应。IAA促进NADH氧化酶活性。生长延缓剂B9对第一切段的伸长生长及NADH氧化酶活性有抑制作用。 |
| 关键词: 质膜氧化还原系统，伸长生长，大豆下胚轴 |
| DOI： |
| 分类号:S945.31;Q945.32 |
| 基金项目:农业部“八五”应用基础研究资助项目,西北农业大学青年科学基金项目 |
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| Roles of Plasma Membrane Redox System in Elongation Growth of Plants |
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Cao Cuiling 1 Li Niya 2 Lu Jinyin 2 Lei Jianju 1
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| Abstract: |
| The activities of NADH oxidase and elongation growth of soybean hypocotyl were remarkably interrlated. The segment which had most rapid elongation rate also presented the greatest acitivity of NADH oxidase of soybean hypocotyl. The NADH oxidase and the elongation growth of the first segment had both positive and negative responses to IAA as well. IAA stimulated the activity of NADH oxidase. Growth-delayer-B9 inhibited both the NADH oxidase and the elongation growth of soybean hypocotyl. |
| Key words: plasma membrane redox system, elongation growth,soybean hypocotyl |
