应用生态学报2011，Vol.22Issue(9)：2285-2290,6.
铜胁迫对紫花苜蓿幼苗叶片抗氧化系统的影响
Effects of copper stress on Medicago sativa seedlings leaf antioxidative system
摘要
Abstract
This paper studied the effects of different concentration (0, 10, 30, SO, and 100 μmol ·L-1) CuSO4 on the leaf physiological and biochemical characteristics of Medicago sativa seedlings cultured with 1/4-strength Hoagland nutrient solution. In treatments 30, 50, and 100 μmol · L-1 of CuSO4, the leaf H2O2, OH · , and MDA contents and Fe-SOD and EST activities in-creased , and GSH and AsA contents increased significantly. With increasing concentration Cu, the POD, GR, and APX activities increased gradually, and the CAT and G6PDH activities decreased after an initial increase. In treatments >10 μmol · L-1 of Cu, the capacity of leaf antioxidative sys-tem in reactive oxygen species scavenging increased to prevent the injury from copper-induced oxi-dative stress.关键词
紫花苜蓿/铜/抗氧化酶/酯酶Key words
Medicago sativa/ copper/ antioxidative enzyme/ esterase.分类
资源环境引用本文复制引用
王松华,张华,何庆元..铜胁迫对紫花苜蓿幼苗叶片抗氧化系统的影响[J].应用生态学报,2011,22(9):2285-2290,6.基金项目
安徽省自然科学研究重点项目(ZD200910)、安徽省自然科学基金项目(11040606M96,11040606M85)和国家公益性行业科研专项(201103005)资助. （ZD200910）
