Analysis of the spatial and temporal expression pattern driven by the GhMYB80-1 promoter in Arabidopsis. A. A schematic diagram of the GhMYB80-1 promoter-GUS construct. B. GUS activity is detected in developing P
-GUS floral buds. C. Line-up (anther stages 4 to 11) of the P
:GUS anther after GUS staining. D and E. Sections of the P
:GUS anthers stained with safranin. Light and dark-field microscopy of stage 8 (D) and stage 9 (E) anthers. Bars = 500 μm in B and C. Bars = 25 μm in D and E.