Figure 3
From: Bioaccumulation and toxicity of selenium compounds in the green alga Scenedesmus quadricauda
Growth of Scenedesmus quadricauda in nutrient solutions with different sulfate and selenite concentrations. Growth of Scenedesmus quadricauda wild type and selenite resistant strain SeIV in nutrient solutions with different sulfate concentrations in the absence (A, C) or the presence of selenite (B, D). Concentrations were chosen to be of low toxicity for wild type and strain SeIV (10 and 200 mg Se × l-1 selenite respectively). E, F: dry weight (g × l-1) attained in cells of a wild type (E) and selenite resistant strain (F) after 84 hrs of growth in the absence and presence of selenite. Data are presented as means ± S.D. of triplicate experiments.