Figure 7.

TCP4-Induced Hypocotyl Elongation Is Dependent on BR Signaling.

(A) and (B) Seven-day-old seedlings grown without (M) or with 12 µM DEX (A) and their hypocotyl lengths averaged from 12 to 15 seedlings (B). jaw-D;GR denotes the jaw-D;ProTCP4:mTCP4:GR genotype.

(C) Relative increase in hypocotyl length upon DEX induction over mock.

(D) and (E) Seven-day-old seedlings (D) and their average hypocotyl lengths (E) of the indicated genotypes grown with or without 12 µM DEX in the presence of 250 nM PPZ. n = 10 to 12.

(F) Relative transcript level in 5-d-old jaw-D;ProTCP4:mTCP4:GR plants grown on medium supplemented with 12 µM DEX and/or 0.5 mm PPZ. Transcript levels were normalized to PP2A. n = 3.

Bars = 2 mm in (A) and 1 mm in (D). Error bars indicate sd; asterisk indicates P < 0.05. An unpaired Student’s t test was used.