Spatio temporal control of cell growth by CUC3 shapes leaf margins
| Autor: | Catherine Perrot-Rechenmann, Léo Serra |
|---|---|
| Přispěvatelé: | Institut Jean-Pierre Bourgin (IJPB), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
food.ingredient Arabidopsis thaliana MorphoGraphX Arabidopsis Morphogenesis Cell Enlargement Biology 01 natural sciences Cell growth 03 medical and health sciences food Gene Expression Regulation Plant Auxin [SDV.BDD]Life Sciences [q-bio]/Development Biology Molecular Biology Transcription factor Cell Proliferation 030304 developmental biology chemistry.chemical_classification 0303 health sciences Leaf development Arabidopsis Proteins food and beverages Organ Size Plants Genetically Modified biology.organism_classification Cell biology Plant Leaves Serration chemistry Developmental biology 4D imaging Cotyledon Transcription Factors 010606 plant biology & botany Developmental Biology |
| Zdroj: | Development (Cambridge, England) Development (Cambridge, England), Company of Biologists, 2020, 147 (6), pp.dev183277. ⟨10.1242/dev.183277⟩ |
| ISSN: | 1477-9129 0950-1991 |
| DOI: | 10.1242/dev.183277 |
| Popis: | International audience; How a shape arises from the coordinated behavior of cells is one of the most fascinating questions in developmental biology. In plants, fine spatial and temporal controls of cell proliferation and cell expansion sustain differential growth that defines organ shape and size. At the leaf margin of Arabidopsis thaliana, interplay between auxin transport and transcription factors named CUP SHAPED COTYLEDON (CUCs), which are involved in the establishment of boundary domain identity, were reported to trigger differential growth, leading to serration. Cellular behaviors behind these differential growths remain scarcely described. Here, we used 3D and time lapse imaging on young leaves at different stages of development to determine the sequence of cellular events resulting in leaf serrations. In addition, we showed that the transcription factor CUC3 is a negative regulator of cell growth and that its expression dynamics in a small number of cells at the leaf margin is tightly associated with the control of differential growth. |
| Databáze: | OpenAIRE |
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