Ueber die galactolipide und fettsäuren in normalen und glucosestimulierten kulturen von Spirodela oligorrhiza

Abstract

The levels of galactosyl diglycerides and the composition of fatty acids of Spirodela oligorrhiza (Lemnaceae) plants cultivated on a nutrient containing 1% glucose were studied. Controls were grown on a medium without glucose. Between the 10^th and the 25^th day of growth the ether-soluble lipids of glucose-stimulated plants contained less monogalactosyl diglyceride (MG) but more digalactosyl diglyceride (DG) than controls. In the same time a marked decrease of the relative amount of C_18:3 acid and an increase of that of C_18:2 and C_16:0 acids was observed. These changes of the lipid composition might be one reason for the structural changes in the chloroplast fine structure of glucose-stimulated Spirodela plants.