1. Department of Plant Biology (A.M.B., C.P.L., D.R.O., E.A.A.), Institute for Genomic Biology (C.R.Y., J.S., D.R.O., E.A.A.), and Department of Crop Sciences (R.L.N.), University of Illinois, Urbana-Champaign, Illinois 61801; and Soybean/Maize Germplasm, Pathology, and Genetics Research Unit (R.L.N., E.A.A.) and Global Change and Photosynthesis Research Unit (C.R.Y., D.R.O., E.A.A.), United States