不同营养状态下3种沉水植物的生理响应
PHYSIOLOGICAL RESPONSES OF SUBMRGED MACROPHYTE UNDER DIFFERENT NUTRITIONAL CONDITIONS
熊汉锋 1谭启玲 2李伟 1汪中华 1刘艳玲3
作者信息
- 1. 鄂州大学,湖北省湿地资源经济研究所,湖北,鄂州,436000
- 2. 华中农业大学资源与环境学院,湖北,武汉,430070
- 3. 中国科学院武汉植物园,湖北,武汉,430074
- 折叠
摘要
通过静态模拟实验,比较研究了不同营养水平(贫营养、中营养、富营养、重富营养)培养的苦草(Vallisneria spirolis)、伊乐藻(Elodea nattalii)和金鱼藻(Ceracophyllurn dernersurn)的过氧化物酶(POD)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性及丙二醛含量变化.研究发现,3种沉水植物的过氧化物酶、超氧化物歧化酶、过氧化氢酶活性及丙二醛含量均随N,P浓度的增加而上升;3种沉水植物的丙二醛含量均随时间延长而上升,POD活性随时间变化呈先上升后下降的趋势;苦草和伊乐藻的SOD活性及伊乐藻CAT活性随时间延伸呈下降的趋势;金鱼藻的CAT活性随时间延伸呈上升的趋势.
Abstract
With static experiments, the content of malomdiadehyde (MDA), and the activity of peroxidase (POD), superoxide dismutase (SOD) and Catalase (CAT) of Vallisneria spiroli, Elodea nattalii and Ceracophyllurn dernersurn in oligotropher, Mesotropher, eutropher and hypertrophic solutions were investigated in this work. The results showed that content of MDA and activity of POD, SOD and CAT of three were enhanced gradually with increasing of the N and P concentration increased. MDA content of malondialdehyde increased with the duration of stress time. The POD activity increased at the earth desiccation stage, then it decreased with dehydration. SOD activity of Vallisneria spirolis and Elodea nattalii decreased with stress time. CAT activity of Elodea nattalii decreased with stress time. CAT activity of Ceracophyllurn dernersurn increased with stress time.
关键词
沉水植物/生理反应/富营养胁迫Key words
submerged macrophyte/physiological response/eutrophication stress引用本文复制引用
基金项目
湖北省教育厅科研项目(B200873001)
鄂州大学科学研究项目(2007zd01)
出版年
2009
NETL
NSTL
维普
万方数据