1. Horticultural Sciences Department, University of Florida, Gainesville, Florida 32611 (S.D.M., B.L.R., M.L.N., A.D.H.);
2. Center for Plant Environmental Stress Physiology, Department of Horticulture and Landscape Architecture, Purdue University, West Lafayette, Indiana 47907 (D.R.); and
3. Department of Chemistry and Biochemistry, New Mexico State University, Las Cruces, New Mexico 88003 (Y.S.-H.)