Fig. 5

OsNAC103 positively regulates leaf senescence in rice. A–C Phenotype of OsNAC103-OE lines and osnac103 mutants during the reproductive growth stage. A Phenotype of OsNAC103-OE plants and osnac103 plants. Bar = 20 cm. B Phenotype of OsNAC103-OE lines and osnac103 mutants in the field. C Phenotype of different leaves in WT, OsNAC103-OE lines and osnac103 mutants. Leaf-1, Leaf-2, Leaf-3, Leaf-4 represent the first, second, third and fourth leaves of the rice plant from top down, respectively. Bar = 2 cm. D–F Total chlorophyll contents of the flag leaves, penultimate leaves and antepenultimate leaves in OsNAC103-OE lines and osnac103 mutants, respectively. G Fv/Fm ratio of OsNAC103-OE lines and osnac103 mutants in penultimate leaves. OE2 and OE7 are two independent OsNAC103-OE lines. CR2 and CR5 are two allelic mutants. The letters a, b, c, d indicate significant differences from the one-way ANOVA analysis (P < 0.05)