Expression of green fluorescence by A. flavus transformants GAP32-8 and GAP33-1. (A) Top view of GAP32-8. (B) Underside view of GAP32-8. (C) Top view of GAP33-1. (D) Underside view of GAP33-1. (E) Top view of 86-10 lacking gfp vector. (F) Underside view of 86-10. (G) Bright green fluorescent conidial heads of GAP33-1. (H) Bright green fluorescent conidial heads of GAP32-8. (I) GFP fluorescence in corn kernels of five inbreeds. Columns from left to right show kernels inoculated with GAP33-1, inoculated with GAP32-8, inoculated with strain 86-10, and wounded only. The five corn inbreds from the top to bottom rows are CI2, Tex6, B73, NC232, and 33-16. Kernels were incubated at 28°C for 5 days, sectioned, and observed for GFP fluorescence under a 365-nm UV light.