Figure 3.
ACC supplementation impacts hypocotyl elongation in a light-dependent manner. Arabidopsis thaliana (Col) and Cardamine hirsuta (Ox) lines were germinated in media supplemented (+) or not (−) with 10 μM ACC and grown for 7 days under different W intensities ranging between 0 (darkness) and 200 μmol·m−2·s−1 of Photosynthetic Photon Flux Density (PPFD). The indicated W intensities used were the following (in order): 0, 14, 28, 52, 101, and 197 μmol·m−2·s−1. The plots show mean and SD of hypocotyl length of approximately 20 seedlings per treatment. Dots represent individual data points. Asterisks indicate significant differences (* p < 0.05; ** p < 0.01) between ACC-treated and untreated samples, according to two-way ANOVA, followed by Sidak’s test. Non-significant differences are not indicated.