Abstract
Stomata are epidermal structures that modulate gas exchange between a plant and its environment. During development, stomata are specified and positioned nonrandomly by the integration of asymmetric cell divisions and intercellular signaling. The Arabidopsis mitogen-activated protein kinase kinase kinase gene, YODA, acts as part of a molecular switch controlling cell identities in the epidermis. Null mutations in YODA lead to excess stomata, whereas constitutive activation of YODA eliminated stomata. Transcriptome analysis of seedlings with altered YODA activity was used to identify potential stomatal regulatory genes. A putative transcription factor from this set was shown to regulate the developmental behavior of stomatal precursors.
Publication types
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Research Support, U.S. Gov't, Non-P.H.S.
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Arabidopsis / cytology*
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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 / genetics
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Arabidopsis Proteins / metabolism*
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Cell Differentiation
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Cell Division
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Cell Lineage
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DNA, Bacterial
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Gene Expression Profiling
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Gene Expression Regulation, Plant
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Genes, Plant
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MAP Kinase Kinase Kinases / genetics
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MAP Kinase Kinase Kinases / metabolism*
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MAP Kinase Signaling System
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Mutation
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Oligonucleotide Array Sequence Analysis
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Phenotype
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Phosphorylation
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Plant Epidermis / cytology*
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Plant Epidermis / growth & development
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Plant Epidermis / physiology
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Plant Leaves / cytology*
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Plant Leaves / growth & development
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Plant Leaves / physiology
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Plants, Genetically Modified
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Receptors, Cell Surface / metabolism
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Serine Endopeptidases / metabolism
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Transcription Factors / genetics
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Transcription Factors / physiology
Substances
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Arabidopsis Proteins
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DNA, Bacterial
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Receptors, Cell Surface
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T-DNA
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Transcription Factors
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too many mouths protein, Arabidopsis
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MAP Kinase Kinase Kinases
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YODA protein, Arabidopsis
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SDD1 protein, Arabidopsis
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Serine Endopeptidases