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Tsugawa S, Hervieux N, Kierzkowski D, Routier-Kierzkowska AL, Sapala A, Hamant O, Smith RS, Roeder AHK, Boudaoud A, Li CB. Clones of cells switch from reduction to enhancement of size variability in Arabidopsis sepals. Development 2017; 144:4398-4405. [PMID: 29183944 PMCID: PMC5769632 DOI: 10.1242/dev.153999] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 10/20/2017] [Indexed: 12/16/2022]
Abstract
Organs form with remarkably consistent sizes and shapes during development, whereas a high variability in growth is observed at the cell level. Given this contrast, it is unclear how such consistency in organ scale can emerge from cellular behavior. Here, we examine an intermediate scale, the growth of clones of cells in Arabidopsis sepals. Each clone consists of the progeny of a single progenitor cell. At early stages, we find that clones derived from a small progenitor cell grow faster than those derived from a large progenitor cell. This results in a reduction in clone size variability, a phenomenon we refer to as size uniformization. By contrast, at later stages of clone growth, clones change their growth pattern to enhance size variability, when clones derived from larger progenitor cells grow faster than those derived from smaller progenitor cells. Finally, we find that, at early stages, fast growing clones exhibit greater cell growth heterogeneity. Thus, cellular variability in growth might contribute to a decrease in the variability of clones throughout the sepal. Summary: Growth analyses of Arabidopsis sepals identify a tipping point in organ development, at which clones of cells change their growth pattern from size uniformization to size variability enhancement.
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Affiliation(s)
- Satoru Tsugawa
- Theoretical Biology Laboratory, RIKEN, Wako 351-0198, Japan
| | - Nathan Hervieux
- Laboratoire de Reproduction et Développement des Plantes, Universiteé de Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon Cedex 07, France
| | - Daniel Kierzkowski
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Köln, Germany
| | - Anne-Lise Routier-Kierzkowska
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Köln, Germany
| | - Aleksandra Sapala
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Köln, Germany
| | - Olivier Hamant
- Laboratoire de Reproduction et Développement des Plantes, Universiteé de Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon Cedex 07, France
| | - Richard S Smith
- Department of Comparative Development and Genetics, Max Planck Institute for Plant Breeding Research, Carl-von-Linné-Weg 10, 50829 Köln, Germany
| | - Adrienne H K Roeder
- Weill Institute for Cell and Molecular Biology and Section of Plant Biology, School of Integrative Plant Sciences, Cornell University, Ithaca, NY 14853, USA
| | - Arezki Boudaoud
- Laboratoire de Reproduction et Développement des Plantes, Universiteé de Lyon, ENS de Lyon, Université Claude Bernard Lyon 1, INRA, CNRS, 46 Allée d'Italie, 69364 Lyon Cedex 07, France
| | - Chun-Biu Li
- Department of Mathematics, Stockholm University, 106 91 Stockholm, Sweden
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