Figure 2.

The weak Suc dependence of lon2 mutants is enhanced when combined with deg15-1. A and B, Suc-dependent hypocotyl elongation in the dark. Seedlings were grown for 36 h in light and 4.5 d in darkness on media with or without 0.5% Suc. C and D, Suc-dependent root elongation in the light. Seedlings were grown for 7 d under white light on media with or without 0.5% Suc. Seeds were stratified for 1 d prior to plating. In A and C, error bars represent sds of the means (n ≥ 12), numbers above light-gray bars indicate the mean percentages of elongation on media without Suc, and asterisks denote no Suc values significantly different than Suc values (Student's t test, P < 0.001). B and D show three seedlings representing the range of observed phenotypes. [See online article for color version of this figure.]