Time Course Biochemical Responses of Green AlgaeScenedesmus obliquusto Aluminum and Low pH.

The article presents a study that investigates the time course biochemical responses of the green alga, Scenedesmus obliquus to the combined effects of aluminum (Al) and low hydrogen ion concentration (pH). After exposure to various Al concentrations at different pHs, the protein content and activities of superoxide dismutase (SOD), peroxidase (POD) and the content of glutathione (GSH) were measured. These enzymes and constituents are associated with the antioxidant defense systems in cells, thus a possible sequential effect of Al and low pH on algae was discussed. The activities of SOD, POD and GSH content in Scenedesmus obliquus were stimulated significantly after treatment with Al and pH during all the times of exposure.