| Cu胁迫对小白菜保护酶系统及其他相关抗性指标的影响 |
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| 引用本文： | 林义章,徐磊,林碧英. Cu胁迫对小白菜保护酶系统及其他相关抗性指标的影响[J]. 福建农林大学学报(自然科学版), 2007, 36(4): 369-372 |
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| 作者姓名： | 林义章 徐磊 林碧英 |
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| 作者单位： | 1. 福建农林大学园艺学院,福建,福州,350002
2. 福建省农业厅种植业技术推广总站,福建,福州,350003 |
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| 摘 要： | 在水培营养液中添加CuSO4,以上海青和五月慢2个常规小白菜品种为试材,研究了Cu胁迫对小白菜保护酶系统及其他相关抗性指标的影响.结果表明:Cu胁迫会破坏保护酶系统,超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性下降,过氧化物酶(POD)活性明显上升,同时产生更多的膜脂过氧化产物丙二醛(MDA),膜相对透性增加,膜的完整性遭到破坏,而SOD活性/MDA含量的降低说明了植株对外界胁迫自我调节能力的下降;作为渗透调节物质,叶片游离脯氨酸含量随外界Cu2+含量的升高显著增加.
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| 关 键 词： | 小白菜 Cu胁迫 酶系统 |
| 文章编号： | 1671-5470（2007）04-0369-04 |
| 修稿时间： | 2006-06-16 |
Effects of copper stress on Brassica chinensis L.resistant enzyme system and other resistant indexes |
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| LIN Yi-zhang,XU Lei,LIN Bi-ying. Effects of copper stress on Brassica chinensis L.resistant enzyme system and other resistant indexes[J]. Journal of Fujian Agricultural and Forestry University, 2007, 36(4): 369-372 |
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| Authors: | LIN Yi-zhang XU Lei LIN Bi-ying |
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| Affiliation: | 1. College of Hortieuhure, Fujian Agrieuhure and Forestry University, Fuzhou, Fujian 350002, China;2. Planting Technology Extension Station, Department of Agriculture of Fujian Province, Fuzhou, Fujian 350003, China |
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| Abstract: | The varieties Shanghaiqing and Wuyueman were planted in hydroponic solution with different contents of copper.The results showed that the activities of superoxide dismutase (SOD) and catalase(CAT) were inhibited under copper stress,on the contrary the activity of peroxidase!(POD) and the content of malondialdehyde(MDA) increased.Cell membrane integrity was spoiled and cell membrane leakage was enhanced.The decline of the value of SOD activity/MDA content value accounted for the decline of self-adjustment of the plant under copper stress.As an important osmoregulation material,free proline in leaves significantly increased with copper concentration of the solution. |
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| Keywords: | Brassica chinensis L. copper stress enzyme system |
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