Figure 8. MPK3/6‐mediated ARR10 phosphorylation decreases the ability of ARR10 protein in repressing salt tolerance.

• A–D
  Four‐day‐old seedlings of 35S:ARR10:YFP, 35S:ARR10^S383A:YFP, and 35S:ARR10^S383D:YFP were transferred to 1/2 MS medium supplemented with or without 50 or 75 mM NaCl. After 3 days of salt treatment, plant phenotypes (A) and relative primary root lengths (B) were determined. After 10 days of salt treatment, changes in survival rates (C) and fresh weights (D) were examined. Scale bar, 1 cm.

Data information: In (B–D), data are means of three biological replicates ± SD (n = 60 for (B), and n = 12 for (C) and (D)). ns indicates no significant difference to the corresponding controls. **, ***, and **** indicate significant difference to the corresponding controls with P < 0.01, P < 0.001, and P < 0.0001, respectively (Student's t‐test).