Lipids, lipid turnover, and phospholipase D in plant suspension culture cells (Daucus carota)

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Abstract
The lipid pattern of Daucus carota L. suspension culture cells and other plant cell strains was analyzed. Phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, and triacylglycerol were the main components. The characteristic plastidal and mitochondrial lipids could also be identified. All strains tested exhibited a phospholipase D activity. Several lipid precursors were found to be well utilized by the cells and to be special markers for certain lipids or parts of the lipid molecules. The half life times of the major lipids ranged at about half a generation time of the cells.