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TAA1-Mediated Auxin Biosynthesis Is Essential for Hormone Crosstalk and Plant Development
Open accessAbstract
Plants have evolved a tremendous ability to respond to environmental changes by adapting their growth and development. The interaction between hormonal and developmental signals is a critical mechanism in the generation of this enormous plasticity. A good example is the response to the hormone ethylene that depends on tissue type, developmental stage, and environmental conditions. By characterizing the Arabidopsis wei8 mutant, we have found that a small family of genes mediates tissue-specific responses to ethylene. Biochemical studies revealed that WEI8 encodes a long-anticipated tryptophan aminotransferase, TAA1, in the essential, yet genetically uncharacterized, indole-3-pyruvic acid (IPA) branch of the auxin biosynthetic pathway. Analysis of TAA1 and its paralogues revealed a link between local auxin production, tissue-specific ethylene effects, and organ development. Thus, the IPA route of auxin production is key to generating robust auxin gradients in response to environmental and developmental cues.
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Citations
Cites
Plant Development Is Regulated by a Family of Auxin Receptor F Box Proteins
Dharmasiri, N., Dharmasiri, S., Weijers, D., Lechner, E., Yamada, M., Hobbie, L., Ehrismann, J. S., Jürgens, G., & Estelle, M. (2005) · Developmental Cell · doi:10.1016/j.devcel.2005.05.014 · Cited by 997
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Cited by
Recent advances and emerging trends in plant hormone signalling
Santner, A., & Estelle, M. (2009) · Nature · doi:10.1038/nature08122 · Cited by 960
Auxin Receptors and Plant Development: A New Signaling Paradigm
Mockaitis, K., & Estelle, M. (2008) · Annual Review of Cell and Developmental Biology · doi:10.1146/annurev.cellbio.23.090506.123214 · Cited by 651
Won, C., Shen, X., Mashiguchi, K., Zheng, Z., Dai, X., Cheng, Y., Kasahara, H., Kamiya, Y., Chory, J., & Zhao, Y. (2011) · Proceedings of the National Academy of Sciences · doi:10.1073/pnas.1108436108 · Cited by 641
The auxin signalling network translates dynamic input into robust patterning at the shoot apex
Vernoux, T., Brunoud, G., Farcot, E., Morin, V., Van den Daele, H., Legrand, J., Oliva, M., Das, P., Larrieu, A., Wells, D., et al. (2011) · Molecular Systems Biology · doi:10.1038/msb.2011.39 · Cited by 576
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
Metadata
- Authors
- Stepanova, A. N., Robertson-Hoyt, J., Yun, J., Benavente, L. M., Xie, D.-Y., Doležal, K., Schlereth, A., Jürgens, G., & Alonso, J. M.
- Venue
- Cell
- Publisher
- Elsevier BV
- Published
- 2008-04
- Volume
- 133
- Issue
- 1
- Pages
- 177-191
- ISSN
- 0092-8674 (ISSN-L)
- OpenAlex
- W2162808103
- Cited by
- 1,182
- References
- 1
- FWCI
- 74.81
- Type
- journal article
- Language
- en
- Open access
- bronze
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- The paper
- Stepanova, A. N., Robertson-Hoyt, J., Yun, J., Benavente, L. M., Xie, D.-Y., Doležal, K., Schlereth, A., Jürgens, G., & Alonso, J. M. (2008). TAA1-Mediated Auxin Biosynthesis Is Essential for Hormone Crosstalk and Plant Development. Cell. https://doi.org/10.1016/j.cell.2008.01.047
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