Figure 3.

Tip angle in CysNO-treated and gravistimulated roots. Arabidopsis seedlings were vertically grown for 3 days and then treated with 1.0 μM CysNO or water for 60 min before being rotated by 90°. Roots were monitored every 2 min during 12 h. (A) Average values of tip angles were determined by a software-based analysis as indicated in section Materials and Methods. Error bars representing SE are indicated for 24 min-intervals. P-values are represented by dashed lines as upward deflections. (B) Average values (±SE) of growth rate, expressed as mm per h. At least 3 independent experiments were performed, n ≥ 11. P-values in comparison to control were calculated with two-tailed Student's t-test, ^*P ≤ 0.05.