Fig. 7

Citrate concentrations in the leaves of the z3 mutant. a, c The second leaves of 90-day-old (a) and 117-day-old (c) WT and the z3 mutant grown in a natural paddy field. b, d Citrate concentrations in the second leaves of the WT and the z3 mutant at 90 DAS (b) and 117 DAS (d) grown under natural long day conditions. Citrate concentrations were determined with HPLC. Data are means ± SD (n = 4). Different letters indicate a significant difference at P < 0.01 (Duncan’s test). Abbreviations: WT, wild type; z3 (dg), dark-green sectors of the z3 mutant leaves; z3 (g), green sectors of the z3 mutant leaves; FW, fresh weight; NS, not significant; conc., concentration