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| 酸和铁胁迫对紫花苜蓿根系质膜H＋-ATPase活性的影响 | |
| 引用本文： | 郭奇梅,孙吉雄,安渊,刘剑锋.酸和铁胁迫对紫花苜蓿根系质膜H＋-ATPase活性的影响[J].草原与草坪,2009(3):12-15. |
| 作者姓名： | 郭奇梅 孙吉雄 安渊 刘剑锋 |
| 作者单位： | 1. 甘肃农业大学,草业学院,甘肃,兰州,730070;上海交通大学,农业与生物学院,上海,200240 2. 甘肃农业大学,草业学院,甘肃,兰州,730070 3. 上海交通大学,农业与生物学院,上海,200240 |
| 基金项目： | 国家“十一五”科技支持计划项目(2006BAD04A14)资助 |
| 摘 要： | 以紫花苜蓿品种WL-525为材料，研究了在pH4．5和pH6．0的环境下，缺Fe^2＋和富Fe^2＋胁迫对紫花苜蓿根系质膜H^＋-ATPase活性的影响。实验结果表明：紫花苜蓿根系质膜H＋-ATPase酶的活性在强酸胁迫、缺Fe^2＋和富Fe^2＋胁迫，以及酸、铁共同胁迫下均发生明显的变化，呈现出短时间胁迫，质膜H^＋-ATPase活性升高，然后随着处理时间的增加，酶活性呈现不同程度的下降趋势。研究结果说明，在强酸和Fe^2＋胁迫下，苜蓿根系质膜H＋-ATPase酶的活性会发生变化，以减轻苜蓿根系受到的伤害。 |
| 关 键 词： | 紫花苜蓿 铁胁迫 质膜 H+-ATPase |
Effect of acidity and Fe stress on the activity of H+-ATPase in plasma membrane of alfalfa roots |
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| GUO Qi-mei,SUN Ji-xiong,AN-Yuan,LIU Jian-feng.Effect of acidity and Fe stress on the activity of H+-ATPase in plasma membrane of alfalfa roots[J].Grassland and Turf,2009(3):12-15. | |
| Authors: | GUO Qi-mei SUN Ji-xiong AN-Yuan LIU Jian-feng |
| Institution: | 1.Pratacultural College of Gansu Agricultural University;Lanzhou 730070;China;2.College of Agriculture & Biology;Shanghai Jiaotong University;Shanghai 201101;China |
| Abstract: | The effect of deficient Fe2+ and excessive Fe2+ on the activity of H+-ATPase in plasma membrane of alfalfa under low pH(pH4.5 and pH6.0) was studied by using Medicago sativa cv.WL No.525.The results show that the activity of H+-ATPase in plasma membrane of alfalfa root changed obviously under pH stress and Fe2+ stress(deficient Fe2+ and excessive Fe2+).The activity of H+-ATPase increased within a very short time but reduced variously along with increasing treatment time.The results indicate that the activit... |
| Keywords: | alfalfa Fe stress plasma membrane H+-ATPase |
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