Glutathione ascorbate cycle Wikipedia Frontiers The Multiple Roles of Ascorbate in the Abiotic Stress Response of Plants: Antioxidant, Cofactor, and Regulator PeerJ Subcellular compartmentalization of the plant antioxidant system: an integrated overview Integrated analysis of the detoxification responses of two Euramerican poplar genotypes exposed to ozone and water deficit: Focus on the ascorbate glutathione cycle ScienceDirect Evaluation of Antioxidant Systems and Ascorbate Glutathione Cycle in Feijoa Edible Flowers at Different Flowering Stages In the absence of other acceptors electrons can be transferred from photosystem I to oxygen