Format

Send to

Choose Destination
Planta. 1978 Jan;139(3):203-8. doi: 10.1007/BF00388631.

The bound auxins: Protection of indole-3-acetic acid from peroxidase-catalyzed oxidation.

Author information

1
Department of Botany and Plant Pathology, Michigan State University, 48824, East Lansing, MI, USA.

Abstract

Indole-3-acetic acid (IAA) was oxidized by horseradish peroxidase, but ester and amide conjugates of IAA were not degraded. Addition of indoleacetyl-myo-inositol, indoleacetyl-L-aspartate, indoleacetylglycine, indoleacetyl-L-alanine, indoleacetyl-D-alanine, or indoleacetyl-β-alanine did not affect the rate of oxidation of IAA by horseradish peroxidase. Peroxidase preparations from Pisum sativum L. and Zea mays L. behaved similarly in that they rapidly oxidized IAA, but not conjugates found in the plant from which the peroxidase was prepared. These results indicate that conjugation could affect the stability of IAA in vivo.

PMID:
24414261
DOI:
10.1007/BF00388631

Supplemental Content

Loading ...
Support Center