摘要
研究了丙溴磷对三角褐指藻和青岛大扁藻生长的影响及其可能的机理 .结果显示 ,低浓度的丙溴磷可以刺激它们的生长 ,高浓度的丙溴磷则对其生长产生抑制作用 ;低浓度丙溴磷还使藻细胞的脂质过氧化程度在低水平增高 ,SOD活性有所降低 ;高浓度时则使其脂质过氧化程度过量升高 ,SOD活性显著下降 .加入抗氧化剂不仅可抑制低浓度丙溴磷对微藻生长的刺激效应 ,而且能缓解高浓度丙溴磷对微藻的毒害作用 .因此 ,丙溴磷作用于微藻的抗氧化防御系统 ,使细胞的脂质过氧化程度在不同水平上升高 ,有可能是导致丙溴磷对微藻生长完全相反的生物学效应的原因之一 .
The effect of Profenofos on \%Phaeodactylum tricornutum\% and \%Platymonos helgolandica\% proliferation and its mechanism were studied. The results indicated that the growth of marine microalgae was stimulated and the lipid peroxidation level increased in certain ranges under low concentration of Profenofos. But the proliferation of algae was inhibited and the lipied peroxidation level in algal cells increased rapidly under high concentration of Profenofos. Antioxidant could not only inhibit the stimulating proliferation of algal cells under low concentration of Profenofos but also alleviate the damage of algal cells under high concentration of Profenofos stress. The activity of SOD in marine microalgae cells declined in a certain range under low concentration of Profenofos. The activity of SOD in algal cells decreased rapidly under high concentration of profenofos. The increase of Reactive Oxygen Spiecies (ROS) and lipid peroxdation under Profenofos stress may be the cause of stimulating or prohibiting the algal growth.
出处
《环境科学学报》
CAS
CSCD
北大核心
2000年第4期473-477,共5页
Acta Scientiae Circumstantiae
基金
国家PDB6资助
关键词
丙溴磷
海洋微藻
生长机理
农药
海洋污染
lipid peroxidation marine microalgae Profenofos superoxide dismutase (SOD) proliferation Reactive Oxygen Spiecies (ROS)
