Abstract
CLAIMS have been made that plant tissue after pre-ineubation with indolyl-3-acetic acid (IAA) shows an enhanced activity of IAA oxidase1,2. Galston3 has proposed the idea that these adaptive changes are at least partly due to changes in the co-factor-inhibitor balance of this enzyme. The naturally occurring co-factors and inhibitors which have been identified so far all appeared to be sugar derivatives of hydroxycinnamic acids and the related flavonols4–7. We found that when the hydroxycinnamic acids P-coumaric acid, ferulic acid or caffeic acid are used as co-factor or inhibitor in the IAA oxidase reaction of horse-radish peroxidase, destruction of these modifiers takes place as a function of the disappearance of IAA. This may offer additional evidence for Galston's hypothesis.
This is a preview of subscription content, access via your institution
Access options
Subscribe to this journal
Receive 51 print issues and online access
$199.00 per year
only $3.90 per issue
Buy this article
- Purchase on Springer Link
- Instant access to full article PDF
Prices may be subject to local taxes which are calculated during checkout
Similar content being viewed by others
References
Galston, A. W., and Dalberg, L. Y., Amer. J. Bot., 41, 373 (1954).
Audus, L. J., and Bakhsh, J. K., Plant Growth Regulation, 109 (Iowa State University Press, Ames, Iowa, 1961).
Galston, A. W., Plant Growth Regulation, 124 (Iowa State University Press, Ames, Iowa, 1961).
Gortner, W. A., and Kent, M. J., Nature, 181, 630 (1958).
Furuya, M., Galston, A. W., and Stowe, B. B., Nature, 193, 456 (1962).
Mumford, F. E., Smith, D. H., and Castle, J. E., Plant Physiol., 37, 752 (1962).
Engelsma, G. (to be published).
Gordon, S. A., and Weber, R. P., Plant Physiol., 26, 192 (1951).
Ray, P. M., Arch. Biochem. Biophys., 64, 193 (1956).
Ray, P. M., and Thimann, K. V., Arch. Biochem. Biophys., 64, 175 (1956).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
ENGELSMA, G. Destruction of Hydroxycinnamic Acids coupled to Oxidation of Indolyl-3-acetic Acid by Peroxidase as a Possible Mechanism for Adaptive Changes of Indolyl-3-acetic Acid Oxidase Activity. Nature 202, 88–89 (1964). https://doi.org/10.1038/202088a0
Issue Date:
DOI: https://doi.org/10.1038/202088a0
This article is cited by
-
Phonolic components of the primary cell wall and their possible r�le in the hormonal regulation of growth
Planta (1979)
-
Formation and function of compression wood in gymnosperms. II
The Botanical Review (1968)
-
Zusammenfassende �bersichtsberichte �ber Hydroxy-zimts�uren und ihre Bedeutung in Lebensmitteln
Zeitschrift f�r Lebensmittel-Untersuchung und -Forschung (1967)
-
The IAA-oxidase system of citrus roots
Planta (1966)
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.
