Figure 5

Plant growth under hydroponics or solid media under contrasting Pi regimens (A-F). Arabidopsis seedlings were directly sowed on the seed-holder (50 – 60 seed per mesh) or agar media (30–35 seeds per plate), growth for 12 days under two different Pi regimens (-P = 10 μM Pi, +P = 1.25 mM Pi) and then analyzed. Bars represent means ± SE (Hydroponics, biological replicates = 5, n = 20–60; agar medium, biological replicates = 10–15, n = 15). Asterisks denote a significant difference from corresponding control (+P treatment) according Student’s t test (P<0.05).