Figure 4.

Model fit and prediction of relative hypocotyl elongation for the wild type (ecotype Columbia [Col-0]) and serk mutants. All measured hypocotyl lengths are plotted relative to the BRZ-treated control. A to C, Calibration on the hypocotyl elongation of the serk1-3serk3-2 double mutant. All hypocotyl lengths were measured at 5 DAG, and seedlings were grown in the dark. D, Model validation by predicting the relative hypocotyl elongation of the serk1-3serk3-2 double mutant. Error bars indicate se; n ≥ 30 hypocotyls measured in three independent replicates.