Hydrogen Peroxide-mediated Oxidation of Indole-3-acetic Acid by Tomato Peroxidase and Molecular Oxygen
Open Access
- 1 August 1979
- journal article
- research article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 64 (2) , 220-223
- https://doi.org/10.1104/pp.64.2.220
Abstract
The oxidation of indole-3-acetic acid by anionic tomato peroxidase was found to be negligible unless reaction mixtures were supplemented with H2O2. The addition of H2O2 to reaction mixtures initiated a period of rapid indole-3-acetic acid oxidation and O2 uptake; this phase ended and O2 uptake fell to a low level when the H2O2 was exhausted. The stoichiometry of the reaction, which is highly dependent on enzyme concentration and pH, suggests that H2O2 initiates a sequence of reactions in which indole-3-acetic acid is oxidized.This publication has 21 references indexed in Scilit:
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