Iron-dependent oxygen free radical generation in plants subjected to environmental stress: toxicity and antioxidant protection

@article{Becana2004IrondependentOF,
  title={Iron-dependent oxygen free radical generation in plants subjected to environmental stress: toxicity and antioxidant protection},
  author={Manuel Becana and Jos{\'e} Fernando Mor{\'a}n and I{\~n}aki Iturbe-Ormaetxe},
  journal={Plant and Soil},
  year={2004},
  volume={201},
  pages={137-147}
}
Iron has a pivotal and dual role in free radical chemistry in all organisms. On the one hand, free Fe can participate in Fenton reactions and catalyze (‘catalytic Fe’) the generation of hydroxyl radical and other toxic oxygen species. On the other hand, Fe is a constituent of the antioxidant enzymes catalase, ascorbate peroxidase, guaiacol peroxidase, and ferro-superoxide dismutase. Protein Fe is Fenton inactive but can be released from proteins upon attack by activated oxygen. Healthy… CONTINUE READING
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