Fig. 9
From: Low pH effects on reactive oxygen species and methylglyoxal metabolisms in Citrus roots and leaves
A diagram showing low pH effects on ROS and MG metabolisms in C. grandis (a) and C. sinensis (b) leaves and roots. In this Figure, we used italics for enzymes and plain format for metabolites. Data from Figs. 1-6 except for H2O2 production rate (HP) and electrolyte leakage (EL) from reference [14]. Values in green and blue (black and magenta) were the ratios of pH 3 and pH 2.5 to pH 5 in leaves (roots), respectively. An asterisk indicates a significant difference between pH 2.5 (pH 3) and pH 5 at P < 0.05. An enzyme or metabolite was considered increased or decreased when it had both a relative change of more or less, respectively, than 1 and a P-value of < 0.05. Metabolite concentrations and enzyme activities were determined on a whole tissue extract and not on a subcellular level. GCL: Glutamate-cysteine ligase; NADH-GOGAT: NADH-dependent glutamine-2-oxoglutarate aminotransferase; γGC: γ-glutamylcysteine; γGT: γ-glutamyltransferase; TA: Ascorbate (ASC) + dehydroascorbate (DHA); TG: Reduced GSH + GSSG