Figure 1.

OsAAP3 leads to lesion mimic and leaf senescence in rice. Flag leaf phenotype (A), arginine (Arg) concentration (B), nitric oxide (NO) concentration (C), nitric oxide synthase (NOS) activity (D), and hydrogen peroxide (H₂O₂) concentration (E) of the OsAAP3 overexpressing (OE) lines, RNA interference (Ri) lines, and wild-type (WT) at the heading stage. Flag leaf phenotype of the OsAAP3 OE lines, Ri lines, and WT with H₂O (F) and H₂O₂ (G) treatments for 4 d. The number of senescent yellow leaves (H) and chlorophyll concentration (I) for flag leaves of the OsAAP3 OE lines, Ri lines and WT with H₂O₂ treatment for 4 d. The flag leaves was taken at 110 days after sowing. Scale bar = 0.5 cm in A, F, G. The letters above the error bars are ranked by the Duncan test at p < 0.05. Values are means ± standard deviation (n = 5).