Figure 3.

Model fit and prediction of relative root growth response for the wild type and serk mutants. All measured root lengths are plotted relative to the BRZ-treated control. A to C, Model calibration on the relative root length of the wild type (ecotype Columbia [Col-0]), serk1-3, and serk3-2 at 6 and 8 DAG. Only results of 8 DAG are shown. D, Model validation by predicting the relative root growth response of serk1-3serk3-2 double mutant seedlings at 8 DAG. E and F, Model predictions for the relative root length of the serk1-1 and serk3-1 single mutants (E) and the serk1-1serk3-1 double mutant (F). For all experiments, n ≥ 15 roots measured in three independent replicates, and error bars indicate se; assays were performed in the presence of 1 µm BRZ.