Shoot branching phenotype. A, Branching phenotype of mature plants at 35 d. The main shoot and all of the rosette leaves were removed to expose rosette leaf branches and cotyledons. Arrowheads indicate rosette leaf branches with flower buds. B, Schematic representation of Arabidopsis branching structure. C, Number of rosette leaf primary branches. D, Number of cauline leaf primary branches. n = 10. Error bars indicate se. Col, Columbia wild type.