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| 渗透胁迫对春小麦根质膜H^＋—ATPase活力的影响及其与脯氨酸积累的关系 | |
| 引用本文： | 黄薇,王静,赵文明,林栖凤.渗透胁迫对春小麦根质膜H^＋—ATPase活力的影响及其与脯氨酸积累的关系[J].海南大学学报(自然科学版),2002,20(1):33-36. |
| 作者姓名： | 黄薇 王静 赵文明 林栖凤 |
| 作者单位： | 1. 西安交通大学,生命科学与技术学院,陕西,西安,710049 2. 兰州大学,干旱农业生态国家重点实验室,甘肃,兰州,730000 3. 海南大学,生物科学技术研究所,海南,海口,570228 |
| 基金项目： | 甘肃省自然科学基金资助项目(zs981-A2-032-N)及兰州大学干旱农业生态国家重点实验室开放课题资助. |
| 摘 要： | 以会宁18、陇春17、陇春8139、定西35四个春小麦品种为材料,用不同浓度的PEG6000溶液模拟干旱胁迫,结果发现干旱胁迫下,抗旱性不同的品种其脯氨酸积累的水分临界点不同,脯氨酸的积累对膜结构的完整性具有一定的保护作用;抗旱性不同的春小麦品种其根系的H+-ATPase活性在干旱胁迫下的变化趋势也不同,抗旱性弱的品种,H+-ATPase活性随着胁迫程度的加剧呈降低趋势;抗旱性强的品种,H+-ATPase活性呈升高趋势.分析表明,H+-ATPase活性与脯氨酸的积累之间呈现显著相关性,且H+-ATPase对脯氨酸的积累有一定的正调控作用. |
| 关 键 词： | 春小麦 水分胁迫 膜伤害 脯氨酸 H+-ATPase |
| 文章编号： | 1004-1729(2002)01-0033-04 |
| 修稿时间： | 2001年9月7日 |
Effect of Osmotic Stress on H+-ATPase Activity of Spring Wheat Root Plasma Membrane and Its Relationship with Accumulation of Pro |
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| HUANG Wei ,WANG Jing ,ZHAO Wen-ming ,LIN Qi-feng.Effect of Osmotic Stress on H+-ATPase Activity of Spring Wheat Root Plasma Membrane and Its Relationship with Accumulation of Pro[J].Natural Science Journal of Hainan University,2002,20(1):33-36. | |
| Authors: | HUANG Wei WANG Jing ZHAO Wen-ming LIN Qi-feng |
| Institution: | HUANG Wei 1,WANG Jing 2,ZHAO Wen-ming 1,LIN Qi-feng 3 |
| Abstract: | Wheat(Triticum aestivum L.)lines Huining 18,Longchun 17,Longchun 8139 and Dingxi 35 were treated with the different concentrations of polyethyleneglycol(PEG6000) to study the effect of osmotic stress on H +-ATP ase activity of spring wheat root plasma membrane and Its relationship with the accumulation of Pro. The study results showed that different varieties accumulated Pro at different water threshold, Pro content increasing under water stress may protect the structure of membrane. Activity of H +-ATP ase raised slightly in higher drought resistance cultivators and declined in lower ones under water stress. The positive correlations existed between the activity of H +-ATP ase and the accumulaion of Pro, and H +-ATP ase can modulate the accumulation of Pro in some degree. |
| Keywords: | spring wheat water stress membrane damage Pro H +-ATP ase |
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