摘要
[目的]为了解硫酸铜对铜绿微囊藻的毒害效果。[方法]利用叶绿素荧光技术,研究不同浓度的Cu^(2+)胁迫对铜绿微囊藻光合作用的影响。[结果]铜胁迫对铜绿微囊藻藻细胞的光合具有明显抑制作用。随着Cu2+浓度的增加,微囊藻受到不同程度的抑制。随着铜离子浓度的增加,最大光化学效率(FV/FM)呈现下降趋势,光系统II(PSII)的潜在活性(F_V/F_0)和光合电子传递能力(ETO/RC)也呈下降趋势,而单位有活性的反应中心耗散的光能(DIO/RC)、单位反应中心吸收的光能(ABS/RC)以及热耗散量子比率(ΦD0)则逐渐上升,以减少铜胁迫对PSII的损害。[结论]在利用硫酸铜控制藻类生长时,应选择适宜的铜离子浓度,既可以达到杀藻的目的,又可以减少环境污染。
[ Objective ] The research aimed to explor the toxic influence of copper sulfate on Microcystis aeruginosa. [ Method ] The chlorophyll fluorescence technology was used to explore the response of its photosynthesis to copper. [ Result] Copper threat could suppress the pho- tosynthesis of algae cell, with the increase of Cu2+ content, Fv/Fu, Fv/Fo and ETO/RC decreased as well. At the same time, DI0/RC, ABS/RC, and ФD0 rose gradually to reduce the damage to PSII caused by copper. [ Conclusion ] When we utilized copper sulfate to control the growth of algae, we should arranged appropriate copper ion content to balance the control of algae and environment protection.
出处
《安徽农业科学》
CAS
2015年第32期29-31,共3页
Journal of Anhui Agricultural Sciences
基金
国家自然科学基金项目(21467031)
教育部高等学校博士学科点专项科研基金项目(20125303120003)
关键词
Cu2+胁迫
铜绿微囊藻
叶绿素荧光
抑制作用
Cu2+ stress
Microcystis aeruginosa
Chlorophyll fluorescence
Inhibitor effect