Fig. 1. Phenotypes of bop1-1 mutant plants. (A) Gross morphologies of a 40-day-old wild-type (left) and a bop1-1 mutant (right) plant. (B) Morphology of each rosette leaf of the wild-type (upper) compared with that of bop1-1 mutant leaves (lower). The arrowheads in B indicate extended petiole regions. (C) Morphology of bop1-1 (right) and wild-type (left) cotyledons of 25-day-old plants. (D) Mature cauline leaf from a wild type (left) and a bop1-1 mutant (right) plant. (E,F) Cotyledon (E), and the first rosette leaf (F) of a 30-day-old bop1-1 plant showing the original petiole region (OP) and the extended petiole region (EP; arrowheads). (G) Fused rosette leaves from a bop1-1 mutant. Arrows indicate two fused leaves. (H) Third leaves from a 37-day-old wild-type (left) and a bop1-1 mutant (right) plant. (I) Flowers from the wild-type (upper) and the bop1-1 mutant (lower). Bar in A, 10 mm.

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