Fig. 5.

RGB1 positively regulates shoot-root axis development in embryos during the early postgermination stage. (The red line indicates the location of the shoot-root axis.) a-e Median longitudinal sections and sections of WT embryos (a) soaked in distilled water for 1 day (day − 2), b soaked in distilled water for 3 days (day 0), c at 1 day after germination, d at 2 days after germination, and (e) at 3 days after germination. f-j Median longitudinal sections and sections of WT embryos (f) soaked in distilled water for 1 day (day − 2), g soaked in distilled water for 3 days (day 0), h at 1 day after germination, i at 2 days after germination, and (j) at 3 days after germination. k Diagram showing the location of shoot-root axis length (red dotted line). l-q Median longitudinal sections of rgb1 embryos at 1, 2, and 3 days after germination. r-w Median longitudinal sections of rgb1 embryos at 1, 2, and 3 days after germination. x Shoot-root axis lengths of the rgb1 mutant, RGB1 heterozygote, and WT at 0, 1, 2, and 3 days after germination. The data are means ± SDs (n = 10; **p < 0.01)