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. 2018 May 24;9:667. doi: 10.3389/fpls.2018.00667

FIGURE 4.

FIGURE 4

Influence of ammonium (NH4+) nutrition on principal methylglyoxal (MG) detoxification pathway. Activities of (A) glyoxalase I and (B) glyoxalase II; (C) expression of glyoxalase I and II genes in leaf tissue of nitrate (NO3)-grown and NH4+-grown plants. Values are the mean ± standard deviation (SD) of 3–4 biological and 2 technical replicates. Significant differences (P ≤ 0.05) between NO3-grown and NH4+-grown plants are indicated by an asterisk (). DTNB, 5,5′-dithio-bis-2-nitrobenzoic acid.