UV-B辐射对三角褐指藻DNA伤害的研究  

Studies on the damage of UV-B radiation to DNA of Phaeodactylum tricornutum

作　　者：刘成圣[1] 唐学玺[1] 王艳玲[1] 王蒙[1] 王丽丽[1] 

机构地区：[1]青岛海洋大学海洋生命学院,266003

出　　处：《海洋水产研究》2002年第2期45-48,共4页Marine Fisheries Research

基　　金：国家自然科学基金项目 ( 39870 14 6 )资助

摘　　要：运用生态毒理学和生物化学的方法研究了紫外线对三角褐指藻 DNA的伤害作用。结果表明 ,低剂量的 UV-B辐射对三角褐指藻的生长有促进作用 ,而高剂量的 UV-B辐射则有抑制作用。随着 UV-B辐射剂量的增加 ,三角褐指藻 DNA损伤程度加剧。而 UV-B辐射处理解除后 ,DNA的损伤可明显恢复。说明 DNA的损伤可在一定程度上指示海洋微藻受The damage of UV B radiation to DNA of Phaeodactylum tricornutum was studied by using ecotoxicological and biochemical methods. The results showed that lower dosage of UV B radiation could stimulate the growth of P.tricornutu ,while higher dosage of UV B radiation could inhibit its growth. The DNA damage of algal cells increased with the increased dosage of UV B radiation. The DNA damage was recovered obviously after UV B radiation was removed. All these showed that the DNA damage could indicate the damage degree of marine microalgae resulted from UV B radiation.

关 键 词：紫外线辐射 三角褐指藻 DNA损伤 

分 类 号：Q949.2[生物学—植物学]