Alteration of morphology in the miR858a transgenic lines. A, Seedling phenotypes of the wild type (WT) and miR858OX, and MIM858 transgenic lines grown on one-half-strength Murashige and Skoog (MS) medium for 10 d. B, Root length of wild-type, miR858OX, and MIM858 seedlings after growth for 10 d on one-half-strength MS medium. C, Seedling fresh weight (mg) of the wild type, miR858OX, and MIM858 after growth for 10 d on one-half-strength MS medium. Phenotype (A) and other data included in B and C for other transgenic lines are shown in Supplemental Figure S6. D, Rosette phenotypes of wild-type, miR858OX (L1–L3), and MIM858 (MIM1–MIM3) transgenic plants. E, Leaf size and pattern of each rosette leaf beginning from the oldest one of wild-type, miR858OX, and MIM858 transgenic plants. F, Number of rosette leaves (black bars) and days of bolting (gray bars) of wild-type, miR858OX, and MIM858 transgenic plants grown under long-day conditions (16-h-light/8-h-dark cycle). G, Rosette diameters of transgenic lines and the wild type. Plants were grown for 3 weeks under a 16-h-light/8-h-dark photoperiod before photography. Bars represent means ± se of eight to 10 individual plants. The level of significance was evaluated by one-way ANOVA with the Newman-Keuls test as a posthoc test. Asterisks indicate significant differences from the wild type: *, P < 0.01; **, P < 0.001; and ***, P < 0.0001. Bars in A, D, and E = 1 cm.