Figure 8.

Deletion Analysis of the AtEXP7 Promoter.

(A) Deletions of the AtEXP7 promoter (ΔpE7) that are fused to the coding region of GFP. Numbers indicate nucleotide positions relative to the transcription initiation site (+1).

(B) Relative activities (GFP expression) of the truncated AtEXP7 promoters in the wild-type (WT) root. Bars indicate standard errors.

(C) to (E) Relative activities of the truncated AtEXP7 promoters in the rhd6 root. For gene induction, the transformed mutant seedlings were treated with 5 μM ACC (C) or 30 nM IAA (D) or roots were separated from agar to expose them to air (E) for 1 day before observation. Bars indicate standard errors.

In (B) to (E), n = 27 to 62.