Figure 5.

Reduced ethylene perception enhances growth but does not impair gravitropic response. Seedlings were grown for 4 d in the dark and then transferred to fresh control media or media supplemented with 100 nm silver nitrate. After 18 h, seedlings were reoriented 90° relative to gravity and the amount of growth (A) and the gravitropic response (B) was quantified 6 h after reorientation. The average and se of 25 to 35 seedlings from three separate experiments are reported. C, Representative images of the seedlings after 6 h are shown. Student's t tests were used to determine statistical differences between growth and gravity response between untreated and silver-treated seedlings within genotypes (white bars). *, P < 0.05. Scale bar = 5 mm.