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M. Bastin

MÉTABOLISME AUXINIQUE ET RHIZOGÉNÈSE.
II. ACTIVITÉS AUXINES-OXYDASIQUE, PEROXYDASIQUE PHÉNOLOXYDASIQUE ET NAPHTOLOXYDASIQUE CHEZ IMPATIENS BALSAMINA L.

Article Open Access

Abstract

Extracts of Impatiens balsamina L. have been purified by acetone precipitation.

Purified extracts showing IAA-oxidase activity with DCP and hydrogen peroxide exhibit peroxidase activity on gaiacol and on several peroxidase substrates.

They show no polyphenoloxidase activity.

It seems highly probable that a specific enzyme is responsible for the oxidation of hydroxynaphtalenic compounds.

In leaf tissues, peroxidase and IAA-oxidase activities do not run parallel during incubation time, but only when inhibitors are present, and are therefore considered to be one enzyme system. A possible interpretation of the results is that inhibitors are able to form complexes with the enzyme.

Pour citer cet article

M. Bastin, «MÉTABOLISME AUXINIQUE ET RHIZOGÉNÈSE.», Bulletin de la Société Royale des Sciences de Liège [En ligne], Volume 33 - Année 1964, Numéro 9 - 10, 588 - 605 URL : http://popups.ulg.ac.be/0037-9565/index.php?id=3637.

A propos de : M. Bastin

Laboratoire de Phytochimie de l’Université de Liège et Centre de Recherches des Hormones végétales (I.R.S.I.A.).