Figure 1.

The cbl4 mutant plants are more sensitive to external Na⁺ than sos3 mutant plants. (a–d) Growth phenotype of Col-0, sos3, sos2, cbl4 and cipk24 under different concentrations of external NaCl. Five-day-old wild type and mutant seedlings were transferred onto the Murashige and Skoog (MS) medium or MS supplemented with 50 mM, 75 mM and 100 mM NaCl. Photographs were taken on the 14th day after the transfer; (e) length of primary roots and (f) fresh weight of seedlings on the 14th day after the transfer. Data are presented as the mean ± Standard Error(SE) of triplicate experiments. Values labeled with different letters are significantly different (p < 0.05).