The cbf triple mutants are sensitive to salt stress but not to osmotic stress. A, Growth of Col-0, cbf123-1, and cbf123-2 plants on MS, NaCl (100 mM), and mannitol (200 mM) media. The seedlings were first grown on MS medium for 3 d after germination before they were transferred to the treatment media. Seedlings were photographed after 10 d of growth on the treatment media. B, Relative root length of Col-0, cbf123-1, and cbf123-2 plants after the plants were grown on MS, NaCl (100 mM), and mannitol (200 mM) media. The root length of wild-type plants on each medium was set to 1. C, Relative fresh weight of Col-0, cbf123-1, and cbf123-2 plants after the plants were grown on MS and NaCl (100 mM) media. The fresh weight of wild-type plants on each medium was set to 1. D, Germination of Col-0, cbf123-1, and cbf123-2 on MS and NaCl (100 mM) media. Germination was assessed on each medium when the germination of wild type reached 100%. Asterisks indicate statistically significant differences (P < 0.05, one-way ANOVA).