Abstract：
Ecological effects in marine living can be understood via the determination of antioxidant molecules in aquatic organisms against pollutants. This study aims to evaluate the radionuclides and trace element stress with response molecules. Cystoseira crinita and Halopteris scoparia have been chosen as study materials because of their susceptibility to pollution. The radionuclides 210Po, 238U, 232Th and 40K and trace elements Al, Fe, Mn, Cr, As, Zn and Pb levels were analysed as well as antioxidants and antioxidant enzymes in two brown algae, seasonally. Marine pollutants in terms of radionuclides and trace elements were correlated with antioxidant molecules in these species and may be used as biomarkers for assessing the radioactive stress. The 210Po and Mn concentrations in C. crinita seem to activate catalase (CAT) and superoxide dismutase (SOD) enzyme activities while 210Po concentrations inclined the proline amount in H. scoparia. This study demonstrated the radiation stress-induced the antioxidant defence system in macroalgae, the primary producers of the marine environment.
摘要：
海洋生物的生态效应可以通过测定水生生物中抗氧化分子对污染物的影响来理解。本研究旨在评估放射性核素和微量元素应激反应分子。Cystoseiracrinita和Halopterisscoparia被选为研究材料，因为它们容易受到污染。放射性核素210Po,238U,232Th和40K及微量元素Al，Fe,Mn,Cr,As,分析了两种褐藻中的锌和铅水平以及抗氧化剂和抗氧化酶，季节性。放射性核素和微量元素方面的海洋污染物与这些物种中的抗氧化剂分子相关，可以用作评估放射性胁迫的生物标志物。C.crinita中的210Po和Mn浓度似乎激活了过氧化氢酶（CAT）和超氧化物歧化酶（SOD）的活性，而210Po浓度使H.scoparia中的脯氨酸含量倾斜。这项研究证明了辐射胁迫诱导的大型藻类的抗氧化防御系统，海洋环境的主要生产者。
