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DÉFECTIVE KERNEL 1 promotes and maintains plant epidermal differentiation
- Source :
- Development 11 (142), 1978-1983. (2015), Development (Cambridge, England), Development (Cambridge, England), 2015, 142 (11), pp.1978-1983. ⟨10.1242/dev.122325⟩, Development (Cambridge, England), Company of Biologists, 2015, 142 (11), pp.1978-1983. ⟨10.1242/dev.122325⟩
- Publication Year :
- 2015
-
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.
- Subjects :
- Cell division
[SDV]Life Sciences [q-bio]
Cellular differentiation
Arabidopsis
differentiation maintenance
Cell Communication
Flowers
Cell fate determination
Genes, Plant
Microtubules
Plant Epidermis
Gene Expression Regulation, Plant
epidermis
Botany
différenciation
Endoreduplication
Gene Silencing
RNA, Messenger
Cell Shape
Molecular Biology
Cell Proliferation
Homeodomain Proteins
Leucine Zippers
DEK1
Ploidies
biology
Epidermis (botany)
cellule epidermique
Arabidopsis Proteins
Calpain
Cell growth
arabidopsis thaliana
Cell Cycle
QK
Cell Differentiation
differentiation
biology.organism_classification
Cell biology
Phenotype
Mutation
plante
Cotyledon
Developmental biology
Signal Transduction
Developmental Biology
Subjects
Details
- Language :
- English
- ISSN :
- 09501991 and 14779129
- Database :
- OpenAIRE
- Journal :
- Development 11 (142), 1978-1983. (2015), Development (Cambridge, England), Development (Cambridge, England), 2015, 142 (11), pp.1978-1983. ⟨10.1242/dev.122325⟩, Development (Cambridge, England), Company of Biologists, 2015, 142 (11), pp.1978-1983. ⟨10.1242/dev.122325⟩
- Accession number :
- edsair.doi.dedup.....c7f3f2bf12b36314d6a71173a1b70514