Fig. 5.

Unidirectional influx of Cl⁻ measured by ³⁶Cl⁻ over 10 min in the rooted leaves of K 51-40 and 140 Ruggeri (Experiment 5). Three days after being transferred to modified Hoagland solution, the rooted leaves were subjected to 10 mM Cl⁻ in the form of NaCl and CaCl₂ in addition to nutrients for 6 d. The rooted leaves were then subjected to 5, 10, or 25 mM Cl⁻ treatment without nutrients for 24 h, after which the whole intact plants were used for the ³⁶Cl⁻ flux experiment. The Ca²⁺ activity was always kept at 0.69 mM during the experiment. Bars represent SEM (n=6). ***P<0.001; NS, not significant.