Gas Chromatographic Analysis of Acidic Indole Auxins in Nicotiana
- 1 February 1969
- journal article
- Published by Oxford University Press (OUP) in Plant Physiology
- Vol. 44 (2), 267-271
- https://doi.org/10.1104/pp.44.2.267
Abstract
Acidic indole auxins have been extracted from N. glauca, N. langsdorffii and their 2 tumor-prone 4n- and 2n-hybrids. After purification of the extracts and thin-layer chromatography, acidic indoles were subjected to esterification and gas chromatography. The esters of 4 indole acids were detected and determined: indole-3-acetic acid, indole-3-carboxylic acid, indole-3-propionic acid and indole-3-butyric acid. The indolic nature of fractionated samples was confirmed by spectrophotofluorometry and the physiological significance of the indole esters proven in a biotest. A substantial increase in extractable indole-3-butyric acid in the tumor-prone hybrids suggests an additional pathway of auxin synthesis in these tissues.Keywords
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