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Concentration and Metabolic Turnover of Indoles in Germinating Kernels of Zea mays L.
Open accessAbstract
The amounts and rates of metabolic turnover of the indolylic compounds in germinating kernels of sweet corn were determined. Knowledge of pool size and rate of pool turnover has permitted: (a) identification of indole-3-acetyl-myo-inositol as the major chemical form for transport of indole-3-acetic acid (IAA) from endosperm to shoot; (b) demonstration that the free IAA of the endosperm is turning over rapidly with a half-life of 3.2 hours; (c) identification of esters of IAA as the immediate precursors of IAA in the endosperm and shoot; (d) demonstration that neither tryptophan nor tryptamine is a major precursor of IAA for the seed or shoot; (e) identification of IAA-myo-inositol glycosides as precursors of IAA-myo-inositol.It is concluded that seedlings of Zea mays utilize esters of IAA, and not tryptophan or its derivatives, for the IAA requirements of the germinating seedling.
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Citations
Cited by
Sites and homeostatic control of auxin biosynthesis in Arabidopsis during vegetative growth
Ljung, K., Bhalerao, R. P., & Sandberg, G. (2001) · The Plant Journal · doi:10.1046/j.1365-313x.2001.01173.x · Cited by 653
Chemistry and Physiology of the Bound Auxins
Cohen, J. D., & Bandurski, R. S. (1982) · Annual Review of Plant Physiology · doi:10.1146/annurev.pp.33.060182.002155 · Cited by 474
Self-citationBartel, B. (1997) · Annual Review of Plant Physiology and Plant Molecular Biology · doi:10.1146/annurev.arplant.48.1.51 · Cited by 312
How do plant growth substances work?
TREWAVAS, A. (1981) · Plant, Cell and Environment · doi:10.1111/j.1365-3040.1981.tb01048.x · Cited by 259
Blue light regulates an auxin-induced K + -channel gene in the maize coleoptile
Fuchs, I., Philippar, K., Ljung, K., Sandberg, G., & Hedrich, R. (2003) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.2032704100 · Cited by 62
Tamas, I. A., Schlossberg-Jacobs, J. L., Lim, R., Friedman, L. B., & Barone, C. C. (1989) · Plant Growth Regulation · doi:10.1007/bf00024774 · Cited by 37
Lim, R., & Tamas, I. A. (1989) · Plant Growth Regulation · doi:10.1007/bf00024773 · Cited by 11
Metadata
- Authors
- Epstein, E., Cohen, J. D., & Bandurski, R. S.
- Venue
- Plant Physiology
- Publisher
- Oxford University Press (OUP)
- Published
- 1980-03-01
- Volume
- 65
- Issue
- 3
- Pages
- 415-421
- ISSN
- 0032-0889 (ISSN-L)
- 1532-2548
- OpenAlex
- W2087272071
- Cited by
- 179
- References
- 0
- FWCI
- 30.79
- Type
- journal article
- Language
- en
- Open access
- bronze
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