期刊
PLANT CELL
卷 27, 期 1, 页码 9-19出版社
AMER SOC PLANT BIOLOGISTS
DOI: 10.1105/tpc.114.133744
关键词
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资金
- Howard Hughes Medical Institute
- Gordon and Betty Moore Foundation
- National Institutes of Health [GM43644]
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM043644] Funding Source: NIH RePORTER
Auxin regulates a vast array of growth and developmental processes throughout the life cycle of plants. Auxin responses are highly context dependent and can involve changes in cell division, cell expansion, and cell fate. The complexity of the auxin response is illustrated by the recent finding that the auxin-responsive gene set differs significantly between different cell types in the root. Auxin regulation of transcription involves a core pathway consisting of the TIR1/AFB F-box proteins, the Aux/IAA transcriptional repressors, and the ARF transcription factors. Auxin is perceived by a transient coreceptor complex consisting of a TIR1/AFB protein and an Aux/IAA protein. Auxin binding to the coreceptor results in degradation of the Aux/IAAs and derepression of ARF-based transcription. Although the basic outlines of this pathway are now well established, it remains unclear how specificity of the pathway is conferred. However, recent results, focusing on the ways that these three families of proteins interact, are starting to provide important clues.
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