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| 紫鸭跖草对铜盐胁迫的生理反应 | |
| 引用本文： | 黄长干,梁英,卢向阳,魏国清,邱业先.紫鸭跖草对铜盐胁迫的生理反应[J].湖南农业大学学报(自然科学版),2008,34(5). |
| 作者姓名： | 黄长干 梁英 卢向阳 魏国清 邱业先 |
| 作者单位： | 1. 湖南农业大学,生物科学技术学院,湖南,长沙,410128;江西农业大学,理学院,江西,南昌,330045 2. 江西农业大学,理学院,江西,南昌,330045 3. 湖南农业大学,生物科学技术学院,湖南,长沙,410128 4. 苏州科技大学,化学与生物工程学院,江苏,苏州,215011 |
| 基金项目： | 国家自然科学基金项目，江西省自然科学基金项目 |
| 摘 要： | 采用Hoagland营养液水培方法在不同CuSO4浓度条件下培养紫鸭跖草,研究紫鸭跖草在Cu胁迫下的生理反应.结果表明:紫鸭跖草抗氧化体系的SOD,APX,GPX和CAT酶活性根部始终高于叶部.在高于250 (mol/L Cu处理时,APX,GPX和SOD酶活性均显著升高,在低于250 (mol/L Cu处理时,只有CAT活性一直随Cu浓度的增大而下降.根部和叶部GR活性在100～250 (mol/L Cu处理时显著高于其他浓度Cu供应水平.GSH含量在250 (mol/L Cu处理时较高;根部脯氨酸含量与Cu供应水平呈线性正相关,而叶部脯氨酸含量与Cu供应水平呈线性负相关.质膜透性和膜脂过氧化研究表明,紫鸭跖草在小于50 (mol/L或大于250 (mol/L Cu供应时分别受到Cu缺乏或中毒胁迫.光合速率和蒸腾速率以及根系活力的研究结果均表明紫鸭跖草在较大浓度Cu供应时生长良好.说明紫鸭跖草相比普通植物,对Cu具有较高的生理需要量. |
| 关 键 词： | 紫鸭跖草 铜胁迫 生理反应 |
Physiological responses of Setcreasea purpurea Boom. to copper stress |
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| HUANG Chang-gan,LIANG Ying,LU Xiang-yang,WEI Guo-qing,QIU Ye-xian.Physiological responses of Setcreasea purpurea Boom. to copper stress[J].Journal of Hunan Agricultural University,2008,34(5). | |
| Authors: | HUANG Chang-gan LIANG Ying LU Xiang-yang WEI Guo-qing QIU Ye-xian |
| Institution: | HUANG Chang-gan1,2,LIANG Ying2,LU Xiang-yang1,WEI Guo-qing2,QIU Ye-xian3 (1.College of Bioscience , Biotechnology,HNAU,Changsha 410128,China,2.College of Science,Jiangxi Agricultural University,Nanchang 330045,3. College of Chemistry , Biology Engineering,Suzhou University of Science , Technology,Suzhou,Jiangsu 215011,China ) |
| Abstract: | In this paper, Hoagland nutrient liquid was used for cultivating Setcreasea purpurea Boom. under different concentration of CuSO4. And we studied the physiological responses of Setcreasea purpurea Boom. under different copper concentration. The results showed that the activity of the APX, GPX, CAT and SOD in active oxygen and free radical elimination system of Setcreasea purpurea Boom. in the root was higher than in the leaf all the time .The activity of the APX, GPX and SOD increased obviously, while the c... |
| Keywords: | Setcreasea purpurea copper stress physiological responses |
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