Glycerolipid analysis in roots of the wild type and the kcs9 mutant. Glycerolipids were extracted from 2-week-old roots and separated by thin-layer chromatography. Fatty acid composition from individual lipids was analyzed by GC. Values shown are means of three experiments ± sd. Asterisks indicate statistical differences with respect to the wild type: *P < 0.05. DGDG, Digalactosyl diacylglycerol; MGDG, monogalactosyl diacylglycerol; PC, phosphatidylcholine; PG, phosphatidylglycerol; PI, phosphatidylinositol.