UV-B辐射对亚历山大藻生长及其生理生化特征的影响  

Effects of UV-B radiation on the growth,physiological and biochemical characteristics of Alexandrium tamarense

作　　者：蔡恒江[1] 唐学玺[1] 张宇红[2] 谢志浩[1] 王仁君[1] 

机构地区：[1]中国海洋大学海洋生态学研究室,山东青岛266003 [2]中国科学院海洋研究所海洋生态与环境科学重点实验室,山东青岛266071

出　　处：《海洋环境科学》2007年第2期130-133,共4页Marine Environmental Science

基　　金：国家自然科学基金项目(30270258);山东省优秀中青年科学家科研奖励基金(03BS120)

摘　　要：通过生物化学的方法,研究了UV-B辐射对亚历山大藻(Alexandrium tamarense)生长及其可溶性蛋白、叶绿素a、H2O2、丙二醛(MDA)含量和超氧化物歧化酶(SOD)活力的影响。结果表明:UV-B辐射会抑制亚历山大藻的生长并对其生理生化特征产生明显的影响;经过UV-B辐射后,可溶性蛋白和叶绿素a含量呈现降低的趋势;H2O2、丙二醛含量和超氧化物歧化酶活力呈现升高的趋势;UV-B辐射产生过量的活性氧自由基是导致亚历山大藻受损伤的主要原因。The effects of UV-B radiation on the growth, physiological and biochemical characteristics including soluble protein content, Chl-a content, H2O2 content, MDA content and SOD activity of Alexandrium tamarense were studied by biochemical methods. The results demonstrated that UV-B radiation could inhibit the growth of Alexandrium tamarense, and the effects on physiological and biochemical characteristics were obvious. The soluble protein content showed increasing trend under UV-B radiation treatment. Superfluous reactive oxygen species produced by UV-B radiation was main reasons for the damage of Alexandrium tamarense.

关 键 词：UV—B辐射 亚历山大藻 生理生化 活性氧自由基 

分 类 号：Q691.3[生物学—生物物理学] X125[环境科学与工程—环境科学]