Institute of Nuclear Sciences, Ege University, İzmir, Turkey.
Ege University Application and Research Centre for Testing and Analysis (EGE-MATAL), İzmir, Turkey.
Bull Environ Contam Toxicol. 2023 Feb 1;110(2):51. doi: 10.1007/s00128-022-03677-2.
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 Po, U, Th and K 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 Po and Mn concentrations in C. crinita seem to activate catalase (CAT) and superoxide dismutase (SOD) enzyme activities while Po 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.
海洋生物的生态效应可以通过测定水生生物中的抗氧化分子来了解，以应对污染物。本研究旨在评估放射性核素和微量元素胁迫与响应分子。选择石莼和海蒿子作为研究材料，是因为它们对污染很敏感。对两种褐藻进行了季节性分析，以确定 Po、U、Th 和 K 等放射性核素以及 Al、Fe、Mn、Cr、As、Zn 和 Pb 等微量元素水平以及抗氧化剂和抗氧化酶。海洋污染物（放射性核素和微量元素）与这些物种中的抗氧化分子相关，可作为评估放射性胁迫的生物标志物。Po 和 Mn 浓度似乎激活了石莼中的过氧化氢酶（CAT）和超氧化物歧化酶（SOD）酶活性，而 Po 浓度使海蒿子中的脯氨酸含量增加。本研究表明，海洋环境中的初级生产者——大型藻类，其抗氧化防御系统受到辐射胁迫的影响。
