Lipid class composition of Gracilaria dura thalli treated with methyl jasmonate. (A) Digalactosyldiacylglycerol (DGDG), (B) monogalactosyldiacylglycerol (MGDG), (C) phosphatidylglycerol (PG), (D) phosphatidylcholine (PC), (E) phosphatidylethanolamine, (F) phosphatidylinositol (PI), (G) phosphatidylserine (PS), (H) phosphatidic acid, (I) lyso-phosphatidylglycerol (LPG), (J) lyso-phosphatidylcholine (LPC) and (K) lyso-phosphatidylethanolamine (LPE). Different letters on the same shaded columns indicate that mean values for different MeJA concentrations were significantly different at P < 0.05 for each incubation time.