Abstract
Auxin induces various distinct developmental responses, partly by regulating gene expression. The Aux/IAA genes are a large gene family, many of which are induced by auxin. Work on Arabidopsis Aux/IAA genes has begun to reveal that they can regulate development and auxin-induced gene expression. Furthermore, auxin responses require Aux/IAA protein turnover. Finally, recent evidence suggests that Aux/IAA proteins can mediate light responses. Work in the near future should test whether Aux/IAA proteins are antennae that connect auxin and light signals to endogenous developmental responses.
MeSH terms
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Arabidopsis / chemistry
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Arabidopsis / genetics
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Arabidopsis / physiology*
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Arabidopsis Proteins*
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DNA-Binding Proteins / genetics
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DNA-Binding Proteins / metabolism
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Gene Expression Regulation, Plant
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Indoleacetic Acids / chemistry
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Indoleacetic Acids / genetics
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Indoleacetic Acids / metabolism
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Indoleacetic Acids / physiology*
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Light
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MAP Kinase Signaling System
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Multigene Family
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Mutation
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Nuclear Proteins / genetics
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Nuclear Proteins / physiology
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Phenotype
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Plant Proteins / genetics
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Plant Proteins / physiology*
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Transcription Factors / genetics
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Transcription Factors / metabolism
Substances
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ARF1 protein, Arabidopsis
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AXR3 protein, Arabidopsis
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Arabidopsis Proteins
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DNA-Binding Proteins
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Indoleacetic Acids
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Nuclear Proteins
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Plant Proteins
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Transcription Factors
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indoleacetic acid