Ethylene‐promoted ascorbate peroxidase activity protects plants against hydrogen peroxide, ozone and paraquat

Ethylene‐promoted ascorbate peroxidase activity protects plants against hydrogen peroxide,... Abstract. In experiments where mung beans (Vigna radiata L.) and peas (Pisum sativum L.) have been pre‐exposed to ethylene and afterwards treated with ozone, it has been shown that such ethylenepretreated plants may become more resistant to ozone. Further experiments with hydrogen peroxide (H2O2) and the herbicide paraquat suggest that this increased resistance against ozone depends on the stimulation of ascorbate peroxidase activity which provides cells with increased resistance against the formation of H2O2 which is also formed when plants are fumigated with ozone. These results explain why increased production of ethylene can be observed in plants exposed with ozone or other oxidative stress and clearly demonstrate that in plants, as well as animals, peroxidases protect cells against harmful concentrations of hydroperoxides. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Cell & Environment Wiley

Ethylene‐promoted ascorbate peroxidase activity protects plants against hydrogen peroxide, ozone and paraquat

Plant Cell & Environment, Volume 13 (9) – Dec 1, 1990

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Publisher
Wiley
Copyright
Copyright © 1990 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0140-7791
eISSN
1365-3040
D.O.I.
10.1111/j.1365-3040.1990.tb01988.x
Publisher site
See Article on Publisher Site

Abstract

Abstract. In experiments where mung beans (Vigna radiata L.) and peas (Pisum sativum L.) have been pre‐exposed to ethylene and afterwards treated with ozone, it has been shown that such ethylenepretreated plants may become more resistant to ozone. Further experiments with hydrogen peroxide (H2O2) and the herbicide paraquat suggest that this increased resistance against ozone depends on the stimulation of ascorbate peroxidase activity which provides cells with increased resistance against the formation of H2O2 which is also formed when plants are fumigated with ozone. These results explain why increased production of ethylene can be observed in plants exposed with ozone or other oxidative stress and clearly demonstrate that in plants, as well as animals, peroxidases protect cells against harmful concentrations of hydroperoxides.

Journal

Plant Cell & EnvironmentWiley

Published: Dec 1, 1990

References

  • Induction of a 33‐kD and 60‐kD peroxidases during ethylene‐induced senescence of cucumber cotyledons
    Abeles, Abeles; Dunn, Dunn; Callahan, Callahan; Dinterman, Dinterman; Schmidt, Schmidt
  • Plant hormone interaction and phenolic metabolism in the regulation of russet spotting in iceberg lettuce
    Ke, Ke; Saltveit, Saltveit
  • Alteration of extracellular enzymes in Pinto bean leaves upon exposure to air pollutants, ozone and sulfur dioxide
    Peters, Peters; Castillo, Castillo; Heath, Heath
  • Superoxide radicals, superoxide dismutase and oxygen toxicity in plants
    Rabinowitch, Rabinowitch; Fridovich, Fridovich
  • Ethylene evolution from 2‐chloroethylphosphonic acid
    Yang, Yang

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