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Effect of DA-6 treatment on chloroplast ultrastructure in tomato leaves under low night temperature. (A) The chloroplast structures in tomato leaves under 28°C/18°C. (B) The chloroplast structures in tomato leaves under 28°C/6°C. (C) The chloroplast structures in tomato leaves treated with DA-6 at 28°C/6°C. Chl, chloroplast; SL, stroma lamella; GL, grana lamellae; SG, starch grain; O, osmiophilic granules.
