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. 2013 Jan 8;8(2):e22904. doi: 10.4161/psb.22904

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Figure 4. Nitrate accumulation and estimated nitrate assimilation rate in the shoots and roots of Brassica napus seedlings supplied with nitrate and nitrate-Glu for 5 d on agar plates. Effects of increasing nitrate concentration and increasing Glu concentration in plants supplied with 1 mM (A) and 5mM nitrate (B) on the shoot and root nitrate concentrations. Effect of increasing nitrate concentration and increasing Glue concentration in plants supplied with 1 mM (C) and 5mM nitrate (D) on the shoot and root N assimilation rate. Values are the average (± SE) of 4 replicates of four seedlings each. Significant differences between control treatments with 1 or 5mM nitrate and nitrate-Glu treatments are given for*p < 0.05; **p < 0.01; (t test). ns, not significant.