In the absence of other acceptors electrons can be transferred from photosystem I to oxygen Ascorbate Glutathione Cycle and Abiotic Stress Tolerance in Plants Springer Nature Link Frontiers Characterization of ascorbate glutathione cycle response in Zostera marina seedlings under short term temperature surge Antioxidative defense system in plants Asada Halliwell Pathway Hydrogen peroxide, ascorbate, and glutathione: building the FoyerHalliwellAsada pathway Planta Springer Nature Link