Fig. 6.

Glucose regulation of transcriptional and translational ABI4–GUS fusions. (A) GUS activity of ABI4pro–GUS and ABI4pro–ABI4–GUS seedlings after 6 d incubation on GM with or without 5% glucose (Glc). (B) GUS transcript levels in seedlings grown and harvested in parallel with those used for GUS assays in (A). (C) GUS activity of ABI4pro–GUS and ABI4pro–ABI4–GUS seedlings after 2 d incubation on minimal medium with or without 6% glucose, 2 μM ABA, or 200 mM NaCl. GUS activity units, displayed on a log scale, are pmol MU h⁻¹ mg protein⁻¹. ** indicates statistically different from activity on minimal medium (P<0.01, based on two-tailed Student's t-test).