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Indole-3-Acetic Acid Biosynthesis in the Mutant Maize orange pericarp , a Tryptophan Auxotroph
Abstract
The maize mutant orange pericarp is a tryptophan auxotroph, which results from mutation of two unlinked loci of tryptophan synthase B. This mutant was used to test the hypothesis that tryptophan is the precursor to the plant hormone indole-3-acetic acid (IAA). Total IAA in aseptically grown mutant seedlings was 50 times greater than in normal seedlings. In mutant seedlings grown on media containing stable isotope-labeled precursors, IAA was more enriched than was tryptophan. No incorporation of label into IAA from tryptophan could be detected. These results establish that IAA can be produced de novo without tryptophan as an intermediate.
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Citations
Cites
Spectrometric Identification of Organic Compounds
Silverstein, R. M., & Bassler, G. C. (1962) · Journal of Chemical Education · doi:10.1021/ed039p546 · Cited by 14,272
Cited by
Auxin: Regulation, Action, and Interaction
WOODWARD, A. W. (2005) · Annals of Botany · doi:10.1093/aob/mci083 · Cited by 2,340
Auxin Biosynthesis and Its Role in Plant Development
Zhao, Y. (2010) · Annual Review of Plant Biology · doi:10.1146/annurev-arplant-042809-112308 · Cited by 1,510
Steenhoudt, O., & Vanderleyden, J. (2000) · FEMS Microbiology Reviews · doi:10.1016/s0168-6445(00)00036-x · Cited by 992
Auxin biosynthesis and storage forms
Korasick, D. A., Enders, T. A., & Strader, L. C. (2013) · Journal of Experimental Botany · doi:10.1093/jxb/ert080 · Cited by 533
A pathway for lateral root formation in Arabidopsis thaliana.
Celenza, J. L., Grisafi, P. L., & Fink, G. R. (1995) · Genes & Development · doi:10.1101/gad.9.17.2131 · Cited by 465
Metadata
- Authors
- Wright, A. D., Sampson, M. B., Neuffer, M. G., Michalczuk, L., Slovin, J. P., & Cohen, J. D.
- Venue
- Science
- Published
- 1991-11-15
- Volume
- 254
- Issue
- 5034
- Pages
- 998-1000
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2169944934
- Cited by
- 241
- References
- 1
- FWCI
- 16.30
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Indole-3-Acetic Acid Biosynthesis in the Mutant Maize orange pericarp , a Tryptophan Auxotroph. https://app.cochat.ai/papers/10.1126/science.254.5034.998
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- Wright, A. D., Sampson, M. B., Neuffer, M. G., Michalczuk, L., Slovin, J. P., & Cohen, J. D. (1991). Indole-3-Acetic Acid Biosynthesis in the Mutant Maize orange pericarp , a Tryptophan Auxotroph. Science. https://doi.org/10.1126/science.254.5034.998
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
