Fig. 5.

NPP1 exerts a negative effect on starch accumulation in rice shoots, especially under conditions of high temperature and CO₂ concentrations. At 7 d after imbibition (DAI), WT (filled squares) and npp1 (open squares) seedlings were further cultured for 7 d under different CO₂ concentration (40–280 Pa) and temperature (12 h light/12 h dark: 28°C/23°C or 33°C/28°C) conditions. Results are presented as starch content per g FW of (A) shoots and (C) roots, or as total starch content in shoot and root (B and D, respectively). Values show the means ± SD (n = 4–10). Asterisks indicate significant differences by Student’s t-test (P > 0.05).