Fig. 7
Incorporation of sulfate into cysteine (a), glutathione (b) and proteins (c) in leaves of drought-stressed maize. Leaf pieces of plants with continuous (black) or no supply of water (white) for 10 and 12 days were first rehydrated in water and subsequently floated for 30 or 60 min on [35S]-sulfate containing medium according to [39]. Proteins and metabolites were extracted and [35S]-label was quantified in the different fraction by scintillation counting. Data are means ± SD of eight 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)