induction in the roots and shoots of Arabidopsis seedlings which were exposed to
for either two or six days. The fold change relative to the mock-treatment is presented. Based on 3 independent biological experiments with 3 technical replicates each. Bars are SEs; they represent the sum of the SEs of the individual values. Asterisks indicate significant differences (six day shoot value vs. two day shoot value), as determined by Student’s t-test (**P < 0.01).