Water loss in WT, aao3 mutant, and AAO3-GFP transgenic aao3 plants. The rate of water loss of detached shoots from aao3 (diamonds), Ler (squares), a1-1 (triangles), and a4-8 (circles) plants were determined by the loss of fresh weight. The figure presented is a typical result for three independent experiments. All values are means ±se.