In-gel activity stained gels of key glycolytic/gluconeogenic enzymes. A, PGI (10 μg protein/lane). B, PGM (10 μg protein/lane). C, AGP (50 μg protein/lane) in wild type (WT) and CAM-deficient lines 351 and 371 grown under control conditions or subjected to 0.3 m NaCl for 14 d (WTS, 351S, and 371S). Representative gels from triplicate assays are shown. Arrows indicate the position of the plastidic isozymes.