Figure 8.

Histochemical Localization of CPS, GA3ox1, GA3ox2 and GA2ox4 Promoter

Activity in Transgenic Arabidopsis Containing Promoter-GUS Gene Fusions. Tissues were stained with X-gluc.

(A–D) shoot apices of seedlings. Longitudinal sections through apical shoot meristem.

(E–G) Three-day-old seedlings. Arrows indicate the elongation zone.

(H–J) Ten-day-old seedling.

(K)Four-week-old rosette.

(L–M) Two-week-old rosettes.

(N–P) roots: longitudinal sections in (N) and (P), whole root in (O).

(Q–R) Inflorescence stems. The X-gluc staining is pink when viewed under dark-field microscopy in (A) and (N). sam, shoot apical meristem; ce, cortex and endodermis; rm, root meristem.

CPS-GUS images reprinted from Silverstone et al. (1997b) with permission from Blackwell Publishing.

GA3ox-GUS images reprinted from Mitchum et al. (2006) with permission from Blackwell Publishing.

GA2ox4-GUS image reprinted from Jasinski et al. (2005) with permission from Elsevier.

Histochemical Localization of CPS, GA3ox1, GA3ox2 and GA2ox4 Promoter