Redox homeostasis in plants. The challenge of living with endogenous oxygen production
| Autor: | Laura De Gara, Maria Concetta de Pinto, Vittoria Locato, Silvio Dipierro |
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| Rok vydání: | 2010 |
| Předmět: |
Pulmonary and Respiratory Medicine
Physiology chemistry.chemical_element Ascorbic Acid Biology Photosynthesis Oxygen Plant Physiological Phenomena Stress Physiological Homeostasis chemistry.chemical_classification Reactive oxygen species General Neuroscience Oxygen evolution Free Radical Scavengers Plants Ascorbic acid Plant cell Mitochondria Electron Transport Chain Complex Proteins chemistry Biochemistry Reactive Oxygen Species Oxidation-Reduction |
| Zdroj: | Respiratory Physiology & Neurobiology. 173:S13-S19 |
| ISSN: | 1569-9048 |
| DOI: | 10.1016/j.resp.2010.02.007 |
| Popis: | Plants are not only obligate aerobic organisms requiring oxygen for mitochondrial energy production, but also produce oxygen during photosynthesis. Therefore, plant cells have to cope with a hyperoxic cellular environment that determines a production of reactive oxygen species (ROS) higher than the one occurring in animal cells. In order to maintain redox homeostasis under control, plants evolved a particularly complex and redundant ROS-scavenging system, in which enzymes and metabolites are linked in a network of reactions. This review gives an overview of the mechanisms active in plant cells for controlling redox homeostasis during optimal growth conditions, when ROS are produced in a steady-state low amount, and during stress conditions, when ROS production is increased. Particular attention is paid to the aspects of oxygen/ROS management for which plant and animal cells differ. |
| Databáze: | OpenAIRE |
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