摘要
利用水生植物产生的化感物质抑制有害藻类是1种藻类控制新技术、研究了选择性抑藻化感物质EMA对蛋白核小球藻和普通小球藻抗氧化酶体系活性的影响．结果显示，化感物质浓度为0．25mg／L时，2种藻类的超氧化物歧化酶（SOD）、过氧化物酶（POD）、过氧化氢酶（CAT）活性都高于对照组．但随着化感物质浓度的升高，蛋白核小球藻3种酶活性都逐渐下降，当化感物质浓度为4mg／L时，SOD活性为0；而普通小球藻的酶活性随着化感物质浓度升高持续升高，都达到对照组的3～4倍．
Using allelochemicals produced by macrophytes to control harmful algae is a novel antialgal method. The present research investigated effects of the species-specific antialgal allelochemical EMA on activities of antioxidant enzymes of Chlorella pyrenoidosa and Chlorella vulagaris. The results showed that 0.25mg/L of EMA increased activities of superoxide dismutase （SOD）, peroxidase （POD）and catalase （CAT） of C. pyrenoidosa and C. vulagaris. With the increase of EMA concentrations, activities of the 3 enzymes of C. pyrenoidosa decreased sharply. The activity of SOD of C. pyrenoidosa decreased to 0 when the EMA were 4mg/L, With the increase of EMA concentrations, activities of the 3 enzymes of C. vulagaris increased to as higher as 3--4 folders of that of the control set. The results gave hints to elucidate the species-specific antialgal mechanisms of EMA.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2006年第10期2091-2094,共4页
Environmental Science
基金
国家'十五'科技攻关计划项目(2004BA809B0402)
关键词
化感物质
蛋白核小球藻
普通小球藻
抗氧化体系
allelochemical
Chlorella pyrenoidosa
Chlorella vulagaris
antioxidant enzymes
作者简介
李锋民（1975～），男，博士，主要研究方向为环境生物学．
通讯联系人，E—mail：hyhu@tsinghua．edu．cn
