Figure 9

Effect of salt stress on WT and 35S::SlIPT3 (L1) tomato plants cultivated on control and salt-containing growth media. (A) Phenotype of WT and 35S::SlIPT3 (L1) transgenic plants grown 4 weeks on the 100 mM NaCl medium. Chlorophyll content (B), carotenoid content (C), cation concentration (D) and K⁺/Na⁺ ratio (E) in 4 weeks-old tomato developing leaves of WT and trangenic plants. Sum VAZ, sum violaxanthin, antheraxanthin and zeaxanthin. Data represent means and SD of two replicates for photosynthetic pigments while three replicates represent data from cation concentration. ¹statistically significant difference from the same treatment of WT (unpaired two-tailed Student’s t-test, p ≤ 0.05). ²statistically significant difference from MS medium within the same line (unpaired two-tailed Student’s t-test, p ≤ 0.05), ²statistically significant difference from MS medium within the same line after Šidák correction for testing of multiple NaCl concentrations (multiple unpaired two-tailed Student’s t-test, overall α = 0.05, individual p ≤ 0.0253).