Fig. 5.

Root balancing pressure (P _Jv0) in Col‐0 and in a collection of 16 Casparian strips (CS) and/or suberin mutants in Arabidopsis that were grown hydroponically for 19 to 21 d (means ± SE, n = 15–20, n = 3). The measurements were performed using pressure chambers at a constant pressure (320 kPa) and after subjecting the roots to 100 mM sodium chloride (NaCl) for 1 h. Letters above the bars indicate significant differences among means after one‐way ANOVA and post hoc Tukey's test (α = 0.05).