Figure 1.
Cytokinin induces GH3.5 and GH3.6 expressions. (A,C,E) Confocal images of five days after germination (dag) roots expressing pGH3.17–3xYFP, pGH3.5–3xYFP and pGH3.6–3xYFP constructs untreated (MS) and treated for four hours with 5 μM of cytokinin (+CK) (see Materials and Methods). Scale bar, 100 µm. (B,D,F) Mean Grey Value quantification of pGH3.17–3xYFP, pGH3.5–3xYFP and pGH3.6–3xYFP lines untreated (grey) and treated with cytokinin 5μM for four hours (+CK) (purple-pGH3.17–3xYFP; green-pGH3.5–3xYFP; orange-pGH3.6–3xYFP lines, respectively) at 5 dag where center lines show the medians. Box limits indicate the 25th and 75th percentiles as determined by R software. Whiskers extend 1.5 times the interquartile range from the 25th and 75th percentiles, data points are plotted as open circles. Statistical significance: (B) Two biological replicates. p-value < 0.005, Student’s t-test, n = 16, 17 sample points, (D) two biological replicates. p-value < 0.05, Student’s t-test, n = 10, 9 sample points, (F) p-value < 0.005, Student’s t-test, n = 10, 10 sample points.