Fig. 4

Lipid annotation. A Mz/rt. plot. One point represents one peak; different lipid categories are shown in different colors. Only peaks with sample intensities at least two times higher than blank intensities are shown. B Relative intensities of all lipid categories. The intensity of a given category was calculated as the sum of intensities of all lipids in the category. GL- glycerolipids, GP- glycophospholipids, FA -fatty acids, ST- sterols, PR- prenols, PK- polyketides and SP-saccharolipids