Genetic manipulation of vacuolar proton pumps and transporters.

College of Agriculture and Natural Resources, Department of Plant Science, University of Connecticut, 1390 Storrs Road, Storrs, Connecticut 06269 (R.A.G.); Whitehead Institute for Biomedical Research, Massachusetts Institute of Technology, 9 Cambridge Center, Cambridge, Massachusetts 02142 (G.R.F.); Baylor College of Medicine, Departments of Pediatrics and Human and Molecular Genetics, United States Department of Agriculture/Agricultural Research Service, Children’s Nutrition Research Center, 1100 Bates Street, Houston, Texas 77030 (K.D.H.); and Vegetable and Fruit Improvement Center, Texas A&M University, College Station, Texas 77845 (K.D.H.)