Plant Physiol.
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Plant Physiology 86:1310-1314 (1988)
© 1988 American Society of Plant Biologists

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Metabolism and Enzymology

Indole-3-Acetic Acid Oxidation and Crocin Bleaching by Horseradish Peroxidase 1

Wolfgang F. Osswald, Wolfgang Schütz and Erich F. Elstner

Institut für Botanik und Mikrobiologie, Biochemisches Labor, Technische Universität München, 8000 München 2, Arcisstraße 16, Federal Republic of Germany

During indoleacetic acid (IAA) oxidation by horseradish peroxidase the water soluble model polyene, crocin, is bleached. IAA-oxidation and crocin bleaching are stimulated at acidic pH as well as by the monophenol p-hydroxyacetophenone. IAA oxidation and crocin bleaching are neither influenced by catalase or superoxide dismutase nor by different OH-radical scavengers, whereas both ascorbate and propylgallate are inhibitory.

1 Financially supported by the Bayer. Staatsministerium für Landesentwicklung und Umweltfragen






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Copyright © 1988 by the American Society of Plant Biologists