Fig. 5From: Effects of glucose on the uptake and metabolism of glycine in pakchoi (Brassica chinensis L.) exposed to various nitrogen sourcesEffects of glucose on the content of 15N-labelled amino acids in pakchoi roots (a) and shoots (b) after a 12-h treatment with 1 mM NO3 − + 1 mM NH4 + + 1 mM 98.1% 15N-glycine. Bars indicate mean values ± SE; n = 6; asterisks indicate significant differences between glucose levels (p < 0.05)Back to article page