FIGURE 1.

Phenotypic characterization of wild type and mutants. (A) Phenotypes at seedling stage (30 days after sowing). (B) Phenotypes at the young panicle differentiation stage. (C) Leaves at seedling stage. (D) Leaves at tillering stage. (E) Plant phenotypes at heading stage. (F) Formation of mosaic spot lesion is light dependent. From left to right: leaf of wild type, leaf of msl-1 covered with aluminum foil for 7 days, leaf of msl-1 recovered to light for 7 days, leaf of msl-2 covered with aluminum foil for 7 days, leaf of msl-2 recovered to light for 7 days. (G) Diaminobenzidine (DAB) staining showing accumulation of H₂O₂ at mosaic lesions. (H) Trypan blue staining, showing cell death at the mosaic lesions. Bar = 1 cm (A); Bar = 10 cm (B,E).