活性氧对3种海洋微藻生长的影响

谢荣; 唐学玺; 李永祺; 王悠

活性氧对3种海洋微藻生长的影响

青岛海洋大学海洋生命学院, 山东青岛 266003

基金项目: 国家攀登B计划资助项目(PDB-6-7-1).

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出版历程
- 收稿日期: 1999-06-21
- 修回日期: 2000-06-12

Effect of reactive oxygen species on cell growth of marine microalgae

College of Marine Life Sciences, Ocean University of Qingdao, Qingdao 266003, China

摘要

摘要: 以Fe²⁺/Vc为活性氧诱生系统,对活性氧作用下3种海洋微藻的生长情况进行了研究.结果表明,低浓度的活性氧可以促进3种海洋微藻的生长,使藻细胞的脂质过氧化程度升高,同时刺激细胞的SOD活性使其略有上升,加入抗氧化剂可以抑制其促进作用;高浓度的活性氧能抑制3种海洋微藻细胞的生长,使细胞的脂质过氧化程度过量增高,抑制细胞的SOD活性,抗氧化剂可以缓解其对藻细胞的毒性作用.不同种类的微藻对活性氧的敏感性存在差异.
- 活性氧 /
- 海洋微藻 /
- 生长 /
- 脂质过氧化 /
- 抗氧化剂 /
- 超氧化物歧化酶
Abstract: Fe²⁺/Vc system is used to generate hydroxyl radical.The proliferation of marine microalgae under hydroxyl radical stress is studied.The results indicate that the cell growth of microalgae is stimulated,the lipid peroxidation increases in the certain ranges and the activities of SOD of algal cells are enhanced under low concentration of hydroxyl radical stress.The growth of algal cell stimulated by ROS can be inhibited by antioxidant.Under high concentration of hydroxyl radical stress,the proliferation of algal cells is inhibited,the lipid peroxidation increases rapidly and the activities of SOD of cells declines.The antioxidant can alleviate the damage of algal cells under high concentration of hydroxyl radical stress.The sensitivities are different for different species of marine microalgae under ROS.stress.
- reactive oxygen species(ROS) /
- marine microalgae /
- lipid peroxidation /
- cell growth /
- antioxidant /
- superoxide dismutases(SOD)

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