Effects of ocean acidification and solar ultraviolet radiation on physiology and toxicity of dinoflagellate Karenia mikimotoi

In Wang et al., a batch culture experiment was conducted to study the interactive effects of ocean acidification (OA) and solar ultraviolet radiation (UVR, 280 – 400 nm) on the harmful dinoflagellate Karenia mikimotoi. this study focused on physiological (growth, pigments, UVabc) and toxicity (hemolytic activity and its toxicity to zebrafish embryos) response variables, representing two factorial combinations of CO2 (400 and 1000 μatm) and solar irradiance (with or without UVR). These results indicated this strain (DP-C32) of K. mikimotoi cells may have efficient mechanisms to endure the combination of ocean acidification and solar UVR.

在Wang等人的研究中，科研人员通过分批培养实验，探究了海洋酸化（Ocean Acidification, OA）与太阳紫外辐射（Solar Ultraviolet Radiation, UVR，波长范围280–400 nm）对有害甲藻米氏凯伦藻（Karenia mikimotoi）的交互影响。本研究选取生理响应指标（包括生长状况、色素含量、UVabc）与毒性响应指标（溶血活性及其对斑马鱼胚胎的毒性）作为观测变量，设置了CO₂分压分别为400 μatm与1000 μatm，以及是否包含太阳紫外辐射的双因子析因组合处理。实验结果表明，该DP-C32株米氏凯伦藻（K. mikimotoi）具备高效的耐受机制，可抵御海洋酸化与太阳紫外辐射的复合胁迫。