Heat-induced changes of lipids in wild-type and rod1 seedlings. TAGs (A), DAGs (B), and PCs (C) were determined in 2-week-old seedlings kept at 22°C (white bars) or after a heat shock (45°C for 90 min, black bars). Data represent means ± sd, n = 5. Asterisks denote statistically significant differences (P < 0.05) from 22°C. FW, Fresh weight.