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. 2018 May 4;9:593. doi: 10.3389/fpls.2018.00593

FIGURE 4.

FIGURE 4

FIP1 affects nitrate uptake and accumulation. Seedlings were grown in ½ MS solution for 7 days and their nitrate content was quantified. (A) The nitrate concentration in the seedlings. (B) The nitrate concentration remaining in the solution after 7 days of seedlings growth. (C) Nitrate uptake in seedlings grown for 7 days in 2.5 mM ammonium succinate and then treated with 5 mM KNO3 for the indicated periods. The nitrate concentration in the roots (D) and shoots (E). Error bars represent the SD of the biological replicates (n = 5). Asterisks indicate significant differences in the transgenic lines in comparison with the WT (p < 0.05, U-test). FW, fresh weight.