Fig. 2From: Drought stress in maize causes differential acclimation responses of glutathione and sulfur metabolism in leaves and rootsImpact of drought on stress markers and reactive oxygen species formation in leaves and roots of maize. a-b Proline steady state levels in leaves (a) and roots (b) in control conditions (black) and after restriction of water supply (white) for indicated time points (n = 5). c In situ staining of hydrogen peroxide formation in leaves of drought-stressed maize (n = 3). d-e Oxidation of the glutathione pool (GSSG/GSH ratio) in leaves and roots of drought-stressed maize (n = 5). f-i Impact of drought stress on transcription (f, g, n = 3) and enzymatic activity (h, i, n = 4) of glutathione reductase (GR) in leaves (f, h) and roots (g, i) of maize. Data are means ± SD of three to five individual replicates. Asterisks indicates statistical differences as determined by the unpaired t-test (*, 0.05 ≥ p > 0.01; **, 0.01 ≥ p > 0.001; ***, p ≤ 0.001)Back to article page