Oxidative Stress: an Introduction. The Contribution of Oxygen Metabolism in Photosynthesis to Oxidative Stress in Plants. Low-temperature Stress and Antioxidant Defense Mechanisms in Higher Plants. Oxidative Stress and Defense Reactions in Plants Exposed to Air Pollutants and UV-B Radiation. Oxidative Burst and the Role of Reactive Oxygen Species in Plant-Pathogen Interactions. Photosensitizing Tetrapyrroles Induce Antioxidative and Pathogen Defense Responses in Plants. Metals Ion-activated Oxidative Stress and Its Control. Engineering Stress Tolerance in Maize. Early Events in Environmental Stresses in Plants - Induction Mechanisms of Oxidative Stress. The Molecular Biology of the Ascorbate-Glutahione Cycle in Higher Plants. Ascorbate Metabolism and Stress. Glutathione Biosynthesis in Plants.