Figure 8.

Regulation of GIG expression levels by ABA. A, GIG transcript levels in abi3, abi4, abi5, and hxk1 in the presence of 1% and 6% Glc. B, Expression of GIG in the absence or presence of 10 μm ABA. C, Transient expression assay for the interaction between ABI4 and the GIG promoter. The effector and reporter plasmids are schematically shown. Relative LUC activity was determined by the addition of Glc alone, ABI4 alone, and both Glc and ABI4. Error bars indicate se from biological triplicates.