DEFECTIVE KERNEL 1 promotes and maintains plant epidermal differentiation.
Identifieur interne : 002F65 ( Main/Exploration ); précédent : 002F64; suivant : 002F66DEFECTIVE KERNEL 1 promotes and maintains plant epidermal differentiation.
Auteurs : Roberta Galletti [France] ; Kim L. Johnson [Australie] ; Simon Scofield [Royaume-Uni] ; Rita San-Bento [France] ; Andrea M. Watt [Australie] ; James A H. Murray [Royaume-Uni] ; Gwyneth C. Ingram [France]Source :
- Development (Cambridge, England) [ 1477-9129 ] ; 2015.
Descripteurs français
- KwdFr :
- ARN messager (génétique), ARN messager (métabolisme), Arabidopsis (cytologie), Arabidopsis (génétique), Arabidopsis (métabolisme), Calpain (génétique), Calpain (métabolisme), Communication cellulaire, Cotylédon (cytologie), Cotylédon (métabolisme), Cycle cellulaire, Différenciation cellulaire, Extinction de l'expression des gènes, Fleurs (cytologie), Fleurs (génétique), Forme de la cellule, Glissières à leucine, Gènes de plante, Microtubules (métabolisme), Mutation (génétique), Phénotype, Ploïdies, Prolifération cellulaire, Protéines d'Arabidopsis (génétique), Protéines d'Arabidopsis (métabolisme), Protéines à homéodomaine (génétique), Protéines à homéodomaine (métabolisme), Régulation de l'expression des gènes végétaux, Transduction du signal, Épiderme végétal (cytologie).
- MESH :
- cytologie : Arabidopsis, Cotylédon, Fleurs, Épiderme végétal.
- génétique : ARN messager, Arabidopsis, Calpain, Fleurs, Mutation, Protéines d'Arabidopsis, Protéines à homéodomaine.
- métabolisme : ARN messager, Arabidopsis, Calpain, Cotylédon, Microtubules, Protéines d'Arabidopsis, Protéines à homéodomaine.
- Communication cellulaire, Cycle cellulaire, Différenciation cellulaire, Extinction de l'expression des gènes, Forme de la cellule, Glissières à leucine, Gènes de plante, Phénotype, Ploïdies, Prolifération cellulaire, Régulation de l'expression des gènes végétaux, Transduction du signal.
English descriptors
- KwdEn :
- Arabidopsis (cytology), Arabidopsis (genetics), Arabidopsis (metabolism), Arabidopsis Proteins (genetics), Arabidopsis Proteins (metabolism), Calpain (genetics), Calpain (metabolism), Cell Communication, Cell Cycle, Cell Differentiation, Cell Proliferation, Cell Shape, Cotyledon (cytology), Cotyledon (metabolism), Flowers (cytology), Flowers (genetics), Gene Expression Regulation, Plant, Gene Silencing, Genes, Plant, Homeodomain Proteins (genetics), Homeodomain Proteins (metabolism), Leucine Zippers, Microtubules (metabolism), Mutation (genetics), Phenotype, Plant Epidermis (cytology), Ploidies, RNA, Messenger (genetics), RNA, Messenger (metabolism), Signal Transduction.
- MESH :
- chemical , genetics : Arabidopsis Proteins, Calpain, Homeodomain Proteins, RNA, Messenger.
- cytology : Arabidopsis, Cotyledon, Flowers, Plant Epidermis.
- genetics : Arabidopsis, Flowers, Mutation.
- metabolism : Arabidopsis, Arabidopsis Proteins, Calpain, Cotyledon, Homeodomain Proteins, Microtubules, RNA, Messenger.
- Cell Communication, Cell Cycle, Cell Differentiation, Cell Proliferation, Cell Shape, Gene Expression Regulation, Plant, Gene Silencing, Genes, Plant, Leucine Zippers, Phenotype, Ploidies, Signal Transduction.
Abstract
During plant epidermal development, many cell types are generated from protodermal cells, a process requiring complex co-ordination of cell division, growth, endoreduplication and the acquisition of differentiated cellular morphologies. Here we show that the Arabidopsis phytocalpain DEFECTIVE KERNEL 1 (DEK1) promotes the differentiated epidermal state. Plants with reduced DEK1 activity produce cotyledon epidermis with protodermal characteristics, despite showing normal growth and endoreduplication. Furthermore, in non-embryonic tissues (true leaves, sepals), DEK1 is required for epidermis differentiation maintenance. We show that the HD-ZIP IV family of epidermis-specific differentiation-promoting transcription factors are key, albeit indirect, targets of DEK1 activity. We propose a model in which DEK1 influences HD-ZIP IV gene expression, and thus epidermis differentiation, by promoting cell adhesion and communication in the epidermis.
DOI: 10.1242/dev.122325
PubMed: 25953348
Affiliations:
- Australie, France, Royaume-Uni
- Auvergne-Rhône-Alpes, Rhône-Alpes, Victoria (État)
- Cedex 07, Melbourne
- Université de Melbourne
Links toward previous steps (curation, corpus...)
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- to stream PubMed, to step Checkpoint: 002B97
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Le document en format XML
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Arabidopsis (cytology)</term>
<term>Arabidopsis (genetics)</term>
<term>Arabidopsis (metabolism)</term>
<term>Arabidopsis Proteins (genetics)</term>
<term>Arabidopsis Proteins (metabolism)</term>
<term>Calpain (genetics)</term>
<term>Calpain (metabolism)</term>
<term>Cell Communication</term>
<term>Cell Cycle</term>
<term>Cell Differentiation</term>
<term>Cell Proliferation</term>
<term>Cell Shape</term>
<term>Cotyledon (cytology)</term>
<term>Cotyledon (metabolism)</term>
<term>Flowers (cytology)</term>
<term>Flowers (genetics)</term>
<term>Gene Expression Regulation, Plant</term>
<term>Gene Silencing</term>
<term>Genes, Plant</term>
<term>Homeodomain Proteins (genetics)</term>
<term>Homeodomain Proteins (metabolism)</term>
<term>Leucine Zippers</term>
<term>Microtubules (metabolism)</term>
<term>Mutation (genetics)</term>
<term>Phenotype</term>
<term>Plant Epidermis (cytology)</term>
<term>Ploidies</term>
<term>RNA, Messenger (genetics)</term>
<term>RNA, Messenger (metabolism)</term>
<term>Signal Transduction</term>
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<term>Arabidopsis (métabolisme)</term>
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<term>Calpain (métabolisme)</term>
<term>Communication cellulaire</term>
<term>Cotylédon (cytologie)</term>
<term>Cotylédon (métabolisme)</term>
<term>Cycle cellulaire</term>
<term>Différenciation cellulaire</term>
<term>Extinction de l'expression des gènes</term>
<term>Fleurs (cytologie)</term>
<term>Fleurs (génétique)</term>
<term>Forme de la cellule</term>
<term>Glissières à leucine</term>
<term>Gènes de plante</term>
<term>Microtubules (métabolisme)</term>
<term>Mutation (génétique)</term>
<term>Phénotype</term>
<term>Ploïdies</term>
<term>Prolifération cellulaire</term>
<term>Protéines d'Arabidopsis (génétique)</term>
<term>Protéines d'Arabidopsis (métabolisme)</term>
<term>Protéines à homéodomaine (génétique)</term>
<term>Protéines à homéodomaine (métabolisme)</term>
<term>Régulation de l'expression des gènes végétaux</term>
<term>Transduction du signal</term>
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<term>Épiderme végétal</term>
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<term>Cotyledon</term>
<term>Flowers</term>
<term>Plant Epidermis</term>
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<keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>ARN messager</term>
<term>Arabidopsis</term>
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<term>Microtubules</term>
<term>Protéines d'Arabidopsis</term>
<term>Protéines à homéodomaine</term>
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<term>Cell Cycle</term>
<term>Cell Differentiation</term>
<term>Cell Proliferation</term>
<term>Cell Shape</term>
<term>Gene Expression Regulation, Plant</term>
<term>Gene Silencing</term>
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<term>Leucine Zippers</term>
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<term>Extinction de l'expression des gènes</term>
<term>Forme de la cellule</term>
<term>Glissières à leucine</term>
<term>Gènes de plante</term>
<term>Phénotype</term>
<term>Ploïdies</term>
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<term>Régulation de l'expression des gènes végétaux</term>
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<front><div type="abstract" xml:lang="en">During plant epidermal development, many cell types are generated from protodermal cells, a process requiring complex co-ordination of cell division, growth, endoreduplication and the acquisition of differentiated cellular morphologies. Here we show that the Arabidopsis phytocalpain DEFECTIVE KERNEL 1 (DEK1) promotes the differentiated epidermal state. Plants with reduced DEK1 activity produce cotyledon epidermis with protodermal characteristics, despite showing normal growth and endoreduplication. Furthermore, in non-embryonic tissues (true leaves, sepals), DEK1 is required for epidermis differentiation maintenance. We show that the HD-ZIP IV family of epidermis-specific differentiation-promoting transcription factors are key, albeit indirect, targets of DEK1 activity. We propose a model in which DEK1 influences HD-ZIP IV gene expression, and thus epidermis differentiation, by promoting cell adhesion and communication in the epidermis.</div>
</front>
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<affiliations><list><country><li>Australie</li>
<li>France</li>
<li>Royaume-Uni</li>
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<name sortKey="Ingram, Gwyneth C" sort="Ingram, Gwyneth C" uniqKey="Ingram G" first="Gwyneth C" last="Ingram">Gwyneth C. Ingram</name>
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<name sortKey="Murray, James A H" sort="Murray, James A H" uniqKey="Murray J" first="James A H" last="Murray">James A H. Murray</name>
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