Effects of S-starvation on cell growth, and Chl and polar lipid contents in <i>Synechocystis</i>.

<p>OD₇₃₀ (a) and the Chl <i>a</i> content (b) were determined for a culture of cells under +S (open circles) or–S (closed circles) conditions. (c) The changes in TLC profiles of polar lipids are shown for a culture of cells under +S or–S conditions. The solvent system used for development of total cellular lipids was CH₃Cl/CH₃OH/conc. NH₃ solution (130:70:10 by vol.). (d) Changes in the polar lipid compositions are shown for cells grown under +S (open symbols) or–S (closed symbols) conditions. MGDG, squares. DGDG, diamonds. SQDG, circles. PG, triangles. The values shown are the averages ± SD for three distinct groups of data.