Figure 7.
Characterization of hydroponic cultures of SlZF2 transgenic and wild-type tomatoes exposed to salinity (125 mm NaCl) during 3 weeks. A, Phenotype of wild-type (WT; Aa) and transgenic (Ab) tomatoes after 10 d. Accelerated senescence of the wild type (Ac and Ae) compared with transgenic tomatoes (Ad and Ae) is revealed by leaf chlorosis and flower abortion. Transfer of transgenic and wild-type tomatoes from hydroponics to soil results in death of wild-type plants (Af). B, MDA accumulation in transgenic (Z4, Z5, and Z16) and wild-type tomato lines exposed to salinity. C, Water content of transgenic and wild-type leaf 3. D, Osmotic potential of transgenic and wild-type leaf 5. E, Sodium accumulation in leaf 3 of Z4, Z5, Z16, and wild-type plants. Data represent means and se of at least two replicates. Letters indicate values that significantly differ between SlZF2 transgenic tomatoes and the wild type according to the Student-Newman-Keuls test at P < 0.05.