Phenotypic characterization of papst1 mutant plants. A, Shoots of 7-d-old seedlings. Bar = 2 cm. B, Phenotypes of the third leaf of wild-type (WT; left) and papst1 mutant (right) plants on days 2 (a), 5 (b), and 10 (c) after emerging. Bars = 2 cm. C, Chlorophyll contents of the third leaf at days 2, 5, and 10 after emerging of wild-type and papst1 mutant plants. Values represent means ± sd of 10 seedlings. FW, Fresh weight.