Lipid accumulation profiles. The accumulation profiles of metabolites whose m/z values corresponded to lipids expressing "total acyl carbon: total double bonds in two acyl groups", i.e., phosphatidylglycerol (a), phosphatidylethanolamine (b), phosphatidylcholine (c), phosphatidic acid (d), and sulfoquinovosyl diacylglycerol (e). the vertical axis shows normalized log-ratio values of the sulfur starvation condition to the control condition. (f) Sulfate profile analyzed by capillary electrophoresis. The vertical axis shows the log-ratio values of the sulfur starvation condition to the control condition.