1.8.4.9 (NH4)2SO4 less effective than Na2SO4 288640 1.8.4.9 DTT DTT can replace glutathione as reductant, 5 mM DTT increases activity 40fold 288640 1.8.4.9 additional information chilling at 12°C induces oxidative stress by formation of H2O2 which increases oxidized glutathione concentration in mesophyll cells and bundle-sheath, increases enzyme activity in bundle-sheath cells, and induces enzyme expression in mesophyll cells 660113 1.8.4.9 additional information feeding of O-acetylserine leads to increased accumulation of sulfite and thiosulfate in wild-type plants 660168 1.8.4.9 Na2SO4 - 288640 1.8.4.9 sulfate optimal concentration between 350 and 500 mM 288642