Figure 5.

K⁺ and Na⁺ contents in rag1-1 seedlings exposed to salt stress. Ten-day-old seedlings were transferred into liquid medium 2 d for pretreatment. Then the liquid medium was supplemented with 0 or 100 mm NaCl for 2 additional days of treatment. There was no significant difference observed between wild type and rag1-1 either in presence or in absence of NaCl, while K⁺ content of the Na⁺ ion homeostasis mutant, sos1-14, was much lower after NaCl treatment. The value is the average measurement of three individually treated flasks, and error bars indicate se.