1. Department of Horticulture, University of Kentucky, Lexington, Kentucky 40546 (J.S., D.H., B.W., V.M., S.D.); Department of Botany, University of British Columbia, Vancouver, British Columbia, Canada V6T 1Z4 (J.G., G.H.); Membrane Biogenesis Laboratory, Centre National de la Recherche Scientifique and University of Bordeaux, F–33076 Bordeaux, France (F.B., Y.L.-B.)