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. 2003 Sep;133(1):182–190. doi: 10.1104/pp.103.026674

Figure 5.

Figure 5.

Expression of GUS and GFP reporter genes under the control of the AtSTP9 promoter. A, Inflorescence stem with GUS histochemical staining. B, Inflorescence at higher magnification showing GUS expression starting from flower stage 10 (according to Bowman [1994]). C, Single flower showing GUS histochemical staining within anthers and on the stigma. Inset, When pollen grains and empty anthers are stained separately, GUS staining can be seen only in pollen grains. D, Inflorescence stem in white light. E, Inflorescence stem under blue excitation light. Arrows indicate a stage 10 flower, when GFP reporter expression is first seen. F, AtSTP9 promoter/GFP plant (left) and wild-type Arabidopsis (right) in white light. G, AtSTP9 promoter/GFP plant (left) and wild-type Arabidopsis (right) under blue excitation light. H, Isolated pollen grains under blue excitation light. I, In vitro germinated pollen in white light. J, In vitro germinated pollen under blue excitation light.