Fig. 2.

Disruptions in the BR pathway lead to aberrant levels and patterning of GL2. (A–C) GL2∷GUS expression in roots of wild type (A) and bri1 mutants (B and C). (B) The bri1 roots were stained for 20 min, the same duration as shown for wild type. (C) The bri1 roots stained for 40 min. (D and E) GL2 shows an increased randomness of expression pattern on roots treated with BRZ (E) compared with the control roots (D). (F) BL treatment does not affect the pattern of GL2 expression. (G and H) Cross-section of GL2∷GUS plants in either wild-type (G) or bri1 background (H). (Scale bars: A–F, 50 μm; G and H, 25 μm.)