Indole-3-methanol is the main product of the oxidation of indole-3-acetic acid catalyzed by two cytosolic basic isoperoxidases fromLupinus
✍ Scribed by A. Barceló; M. A. Pedreño; M. A. Ferrer; F. Sabater; R. Muñoz
- Publisher
- Springer-Verlag
- Year
- 1990
- Tongue
- English
- Weight
- 344 KB
- Volume
- 181
- Category
- Article
- ISSN
- 0032-0935
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✦ Synopsis
The nature of the products of the auxin catabolism mediated by both basic and acidic isoperoxidases has been studied. While indole-3-methanol is only a minor product of the oxidation of indole-3-acetic acid catalyzed by extracellular acidic isoperoxidases, it is the only product of the oxidation of indole-3-acetic acid catalyzed by two cytosolic basic isoperoxidases (EC 1.11.1.7) from lupin (Lupinus albus L.) hypocotyls. The putative indole-3-methanol formed by these latter isoperoxidases was isolated and then characterized by mass spectrometry and 1H-nuclear magnetic resonance spectrometry. These results are discussed with respect to the diversity and compartmentation of the catabolism of indole-3acetic acid in plant tissues.