Fig. 7. SEM micrographs of Arabidopsis flowers expressing epidermal transgenes in a wild-type background. Strong (B,D) and weak (A,C) phenotypes are shown for the AFI::DEF (A,B) and AFI::DEF/GLO (C,D) transgenes. In A-D some or all first whorl organs were removed. Note the differences in shape and surface structure between first whorl organs in B and D. The flowers with wild-type sepals in E indicate that AFI::GLO has no effect when expressed alone; in contrast, expression of the FDH::PI transgene results in transformation of aberrant sepal/petal mosaic organs. Bars, 50 µm.