Figure 3.

Testing selected synthetic transcription activator-like effector-activated promoters (STAPs) with GFP.Eight different STAPs displaying different levels of expression with the GUS reporter gene were tested with GFP. Nicotiana benthamiana leaves were infiltrated with Agrobacterium tumefaciens strains carrying different STAP:GFP constructs with (left side) or without (right side) the designer transcription activator-like effector (dTALE). Pictures of the leaves were taken in normal light (first and third columns) or under UV illumination (second and fourth columns) to visualize GFP.