Fig. 1

GC/MS analysis of DPME and PME accumulation in cultured cells of P. strobus by seven different fungal elicitor treatments. a GC total ion chromatogram of methanol extracts of control cells without elicitor treatment. b–h Chromatograms of methanol extracts of cells after seven different fungal elicitor treatments. i Chromatogram of authentic standards of DPME and PME. j Content of DPME in cells after 3 days of fungal elicitor treatments. k Content of PMEs in cells after 3 days of fungal elicitor treatments