Abstract
The development of plant root systems is sensitive to the availability and distribution of nutrients within the soil. For example, lateral roots proliferate preferentially within nitrate (NO3-)-rich soil patches. A NO3--inducible Arabidopsis gene (ANR1), was identified that encodes a member of the MADS box family of transcription factors. Transgenic plants in which ANR1 was repressed had an altered sensitivity to NO3- and no longer responded to NO3--rich zones by lateral root proliferation, indicating that ANR1 is a key determinant of developmental plasticity in Arabidopsis roots.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Arabidopsis / genetics*
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Arabidopsis / growth & development
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Arabidopsis / metabolism
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Arabidopsis Proteins*
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DNA-Binding Proteins / genetics*
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DNA-Binding Proteins / physiology
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Gene Expression Regulation, Plant
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Genes, Plant*
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MADS Domain Proteins
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Molecular Sequence Data
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Nitrates / metabolism
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Nitrates / pharmacology*
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Plant Proteins / genetics*
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Plant Proteins / physiology
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Plant Roots / genetics
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Plant Roots / growth & development*
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Plant Roots / metabolism
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Plants, Genetically Modified
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Transcription Factors / genetics*
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Transcription Factors / physiology
Substances
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ANR1 protein, Arabidopsis
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Arabidopsis Proteins
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DNA-Binding Proteins
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MADS Domain Proteins
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Nitrates
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Plant Proteins
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Transcription Factors