生态环境学报2011，Vol.20Issue(3)：525-531,7.
铅胁迫下不同生态型五节芒(Miscanthus floridulus)的抗氧化系统的差异研究
Physiological metabolism and protective enzyme activity of different ecotypes of Miscanthusfloridulus under Pb stress
摘要
Abstract
The aim of the experiment was to reveal the different principle of resistant Pb exposure between two ecotype of Miscanthus floridulus. By comparing the different physiological responses under the same Pb concentration treatment between the non-mining ecotype of Miscanthus floridulus (collected from hills of Huizhou Boluo) and the mining ecotype of Miscanthus floridulus (collected from the Dabaoshan mine). The melondialodehyde (MDA) content of the non-mine ecotype are all significantly higher than control under Pb treatment, and the mine ecotype, only 10 and 80 mg·kg-1 treatment higher than control. It is indicated that the non-mine ecotype suffer more serious damage under Pb treatment. The activity of superoxide dismutase (SOD) of both ecotypes are inhibited under Pb treatment. The activity of peroxidase (POD) are all induce to increase compare to control under Pb treatment, but the increase are more in the mine ecotype than non-mine ecotype. As the increase of the Pb treated concentration, the activity of polyphenoloxidase (PPO) of the non-mine ecotype present the trend of first increase and than decrease, and the mine ecotype show the irregular variety, more active in the highest concentration Pb treatment (160 mg· kg-1) than the non-mine ecotype.The mining ecotype show the irregular variety, more active in the highest concentration Pb treatment than the non-mining ecotype.关键词
铅/五节芒/生态型/抗氧化系统Key words
lead/ Miscanthus floridulus/ ecotype/ antioxidative system分类
资源环境引用本文复制引用
秦建桥,赵华荣,胡萌,赵鹏,贺磊,郑晓茶..铅胁迫下不同生态型五节芒(Miscanthus floridulus)的抗氧化系统的差异研究[J].生态环境学报,2011,20(3):525-531,7.基金项目
广东省自然科学基金团队项目(06202438) （06202438）
中山大学985工程环境污染控制与修复技术创新平台项目 （）
