Plant Growth Regulation

, Volume 27, Issue 1, pp 3-13

4-Chloroindole-3-acetic acid and plant growth

  • Dennis M. ReineckeAffiliated withDepartment of Agricultural, Food, and Nutritional Science, Plant Physiology and Molecular Biology Research Group, University of Alberta

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4-Chloroindole-3-acetic acid (4-Cl-IAA) is a potent auxin in various auxin bioassays. Researchers have used 4-Cl-IAA as well as other halogenated auxins in biological assays to understand the structural features of auxins required to induce auxin mediated growth in plants. 4-Cl-IAA is a naturally occurring auxin in plants from the Vicieae tribe of the Fabaceae family; and 4-Cl-IAA has also been identified in one species outside the Vicieae tribe, Pinus sylvestris. The apparent function of the unique auxin 4-Cl-IAA in normal plant growth and development will be discussed with a focus on Pisum sativum and Vicia faba

4-chloroindole-3-acetic acid 4-substituted IAA auxin Pisum sativum structure-activity relationship Vicia faba