Inactivation of Peroxidase: Its Role in Plant Senescence
The activated metabolites of molecular oxygen (H2O2, O 2 - , HO⋅) play an important role in cellular activity, because their accummulation can induce degradative processes in cellular components. This oxygen toxicity is caused by the imbalance of a sensitive equilibrium: molecular oxygen is needed to generate energy and maintain other biological functions, but at the same time it is the source of the activated forms of oxygen, which damage the cells (Fridovich, 1976).
KeywordsAscorbate Peroxidase Oxygen Toxicity Spinach Chloroplast Inactivation Process Degradative Process
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