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Plant Aging pp 417-421 | Cite as

Inactivation of Peroxidase: Its Role in Plant Senescence

  • M. Acosta
  • M. B. Arnao
  • J. A. del Río
  • J. L. Casas
  • J. Sánchez-Bravo
  • F. García-Cánovas
Part of the NATO ASI Series book series (NSSA, volume 186)

Abstract

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).

Keywords

Ascorbate Peroxidase Oxygen Toxicity Spinach Chloroplast Inactivation Process Degradative Process 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. Acosta, M., del Río, J.A., Arnao, M.B., Sânchez-Bravo, J., Sabater, F., García-Carmona, F. and Garcia-Canovas, F., 1988, Oxygen consumption and enzyme inactivation in the indolyl-3-acetic acid oxidation catalyzed by peroxidase. Biochim. Biophys. Acta, 955:194–202.CrossRefGoogle Scholar
  2. Ator, M.A., David, S.K., and Ortiz de Montellano, P.R., 1987, Structure and catalytic mechanism of horseradish peroxidase, J. Biol. Chem., 262:14954–14960.PubMedGoogle Scholar
  3. Childs, R.E., and Bardsley, W.G., 1975, The steady-state kinetics of peroxidase with 2,2’-azino-di-(3-ethyl benzthiazoline-6-sulphonic acid) as chromogen, Biochem. J., 145:93–103.PubMedGoogle Scholar
  4. Fridovich, I., 1976, Oxygen radicals, hydrogen peroxides and oxygen toxicity, in: “Free Radicals in Biology”, W. Pryor, ed., Academic Press, New York.Google Scholar
  5. Hossain, M.A., and Asada, K., 1984, Inactivation of ascorbate peroxidase in spinach chloroplast on dark addition of hydrogen peroxide: Its protection by ascorbate, Plant Cell Physiol., 25:1285–1295.Google Scholar
  6. Rabinowitch, H.D., and Fridovich, I., 1983, Superoxide radicals, superoxide dismutases and oxygen toxicity in plants, Photochem. Photobiol., 37:679–690.CrossRefGoogle Scholar

Copyright information

© Plenum Press, New York 1990

Authors and Affiliations

  • M. Acosta
    • 1
  • M. B. Arnao
    • 1
  • J. A. del Río
    • 1
  • J. L. Casas
    • 1
  • J. Sánchez-Bravo
    • 1
  • F. García-Cánovas
    • 2
  1. 1.Department of Plant BiologyUniversity of MurciaMurciaSpain
  2. 2.Department of BiochemistryUniversity of MurciaSpain

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