UVB辐射增强对三种赤潮微藻DNA的伤害效应-生命科学研究.PDFVIP

2005 3 16 3 CHIN ESE JO UR NAL OF A PPL IED ECOLO GY, M ar. 2005, 16( 3) !559~ 562 UVB DNA * 1 1* * 1, 2 蔡恒江 唐学玺 张培玉 ( 1 , 26600 3; 2 , 273 165) U VB DN A . , 3 U VB ; U VB . U VB , 3 DN A , DNA , DN A . U VB , DN A . 6 d, DNA ( P 005) ; 3 d, DNA ( P 005) , 3 DNA U VB . U VB DNA 100 1- 9332( 2005) 03- 0559- 04 X 17 15 A 1 Effects of UVB radiation enhancement on DNA damage of three redtide microalgae species. CA I Heng iang , 1 1, 2 1 T AN G Xuex i , ZHA NG P eiyu ( Marine Ecology Laboratory, Ocean University of China, Qingdao 266003, 2 China; College of Lif e Sciences, Quf u Nor al University, Quf u 273 165, China) .Chin. J. App l. Ecol. , 2005 , 16( 3) : 559~ 562 . T he ecotox icolog ical and biochemical study w ith Heterosig a akashiwo, Alexandriu ta arense and Skeletone a costatu show ed that the test three species of redt ide microalgae had diff erent sensitivities to U VB radia tion enhancement , and the order from high to low w as Heterosig a akashiwo, Alexandriu ta arense and Skeletone a costatu . T he DNA damag e of algal cells increased w it h U VB r adiation enhancement , being more no table in Heterosig a akashiwo than in Alexandriu ta arense and Skeletone a costatu , and in Alexan driu ta arense than in Skeletone a costatu . T he DN A damag e of Heterosig a akashiwo and Alexandriu ta arense could be signif icantly repair ed ( P 0. 05) after 6 days of U VB radiation r emoval, and that of Skele tone a costatu could be