Changes in leaf lipid classes following pressure wounding on leaves of wild-type Arabidopsis thaliana across the mid-vein with a hemostat. Leaves were harvested from unwounded or wounded plants 45 min and 6 h after wounding.5 This figure is based on data in ref. 5. (A) Normalized mass spectral intensity for lipids in the panels (B, C, and D). 1 unit of normalized mass spectral signal equals the signal obtained from 1 pmol of internal standard. Values over the bars indicate the percent of the total lipids represented by the bar. (B) Amount of structural (membrane) lipid classes after wounding relative to unwounded level for each class. (C) Amounts of minor plastidic lipid classes relative to the unwounded level for each class. (D) Amounts of minor extraplastidic lipid classes relative to the unwounded level for each class. * indicates significant changes compared to unwounded samples, T-test, P < 0.001, n = 31. Error bars are standard deviation.