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. 1990 Jan;92(1):54–60. doi: 10.1104/pp.92.1.54

Ethylene-Enhanced Catabolism of [14C]Indole-3-Acetic Acid to Indole-3-Carboxylic Acid in Citrus Leaf Tissues 1

Oded Sagee 1,2, Joseph Riov 1, Raphael Goren 1
PMCID: PMC1062247  PMID: 16667265

Abstract

Exogenous [14C]indole-3-acetic acid (IAA) is conjugated in citrus (Citrus sinensis) leaf tissues to one major substance which has been identified as indole-3-acetylaspartic acid (IAAsp). Ethylene pretreatment enhanced the catabolism of [14C]IAA to indole-3-carboxylic acid (ICA), which accumulated as glucose esters (ICGIu). Increased formation of ICGIu by ethylene was accompanied by a concomitant decrease in IAAsp formation. IAAsp and ICGIu were identified by combined gas chromatography-mass spectrometry. Formation of ICGIu was dependent on the concentration of ethylene and the duration of the ethylene pretreatment. It is suggested that the catabolism of IAA to ICA may be one of the mechanisms by which ethylene reduces endogenous IAA levels.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Beyer E. M. Abscission: the initial effect of ethylene is in the leaf blade. Plant Physiol. 1975 Feb;55(2):322–327. doi: 10.1104/pp.55.2.322. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Beyer E. M., Morgan P. W. Effect of ethylene on the uptake, distribution, and metabolism of indoleacetic Acid-1-C and -2-C and naphthaleneacetic Acid-1-C. Plant Physiol. 1970 Jul;46(1):157–162. doi: 10.1104/pp.46.1.157. [DOI] [PMC free article] [PubMed] [Google Scholar]
  3. Domagalski W., Schulze A., Bandurski R. S. Isolation and characterization of esters of indole-3-acetic acid from the liquid endosperm of the horse chestnut (Aesculus species). Plant Physiol. 1987;84:1107–1113. doi: 10.1104/pp.84.4.1107. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Ehmann A. The van urk-Salkowski reagent--a sensitive and specific chromogenic reagent for silica gel thin-layer chromatographic detection and identification of indole derivatives. J Chromatogr. 1977 Feb 11;132(2):267–276. doi: 10.1016/s0021-9673(00)89300-0. [DOI] [PubMed] [Google Scholar]
  5. Ernest L. C., Valdovinos J. G. Regulation of Auxin Levels in Coleus blumei by Ethylene. Plant Physiol. 1971 Oct;48(4):402–406. doi: 10.1104/pp.48.4.402. [DOI] [PMC free article] [PubMed] [Google Scholar]
  6. Lieberman M., Knegt E. Influence of Ethylene on Indole-3-acetic Acid Concentration in Etiolated Pea Epicotyl Tissue. Plant Physiol. 1977 Oct;60(4):475–477. doi: 10.1104/pp.60.4.475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Riov J., Dror N., Goren R. Effect of ethylene on [C]indole-3-acetic Acid metabolism in leaf tissues of woody plants. Plant Physiol. 1982 Nov;70(5):1265–1270. doi: 10.1104/pp.70.5.1265. [DOI] [PMC free article] [PubMed] [Google Scholar]
  8. Sundberg B., Sandberg G., Jensen E. Identification and Quantification of Indole-3-methanol in Etiolated Seedlings of Scots Pine (Pinus sylvestris L.). Plant Physiol. 1985 Apr;77(4):952–955. doi: 10.1104/pp.77.4.952. [DOI] [PMC free article] [PubMed] [Google Scholar]

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