Plant Physiol. Illumina
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Plant Physiology 96:1167-1170 (1991)
© 1991 American Society of Plant Biologists

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Metabolism and Enzymology

Oxidized Oligogalacturonides Activate the Oxidation of Indoleacetic Acid by Peroxidase

Russell Pressey

U.S. Department of Agriculture, Agricultural Research Service, Richard B. Russell Research Center, P. O. Box 5677, Athens, Georgia 30613

Partial hydrolysis of polygalacturonic acid with a purified {alpha}-1,4-endopolygalacturonase yielded oligogalacturonides and trace amounts of a series of modified oligogalacturonides. Three of the minor products were isolated and identified as oxidized oligogalacturonides possessing termini of galactaric acid. Oxidation of indole-3-acetic acid by peroxidases was activated by oxidized oligogalacturonides but not by normal analogs.






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Copyright © 1991 by the American Society of Plant Biologists