Skip to Main content Skip to Navigation
Preprints, Working Papers, ...

Organ-wide and ploidy-dependent regulations both contribute to cell size determination: evidence from a computational model of tomato fruit

Valentina Baldazzi 1, 2, 3 Pierre Valsesia 1 Michel Génard 1 Nadia Bertin 1
3 BIOCORE - Biological control of artificial ecosystems
CRISAM - Inria Sophia Antipolis - Méditerranée , INRA - Institut National de la Recherche Agronomique, LOV - Laboratoire d'océanographie de Villefranche
Abstract : The development of a new organ is the result of coordinated events of cell division and expansion, in strong interaction with each other. This paper presents a dynamic model of tomato fruit development that includes cells division, endoreduplication and expansion processes. The model is used to investigate the interaction among these developmental processes, in the perspective of a neo-cellular theory. In particular, different control schemes (either cell-autonomous or organ-controlled) are tested and results compared to observed data from two contrasted genotypes. The model shows that a pure cell-autonomous control fails to reproduce the observed cell size distribution, and an organ-wide control is required in order to get realistic cell sizes. The model also supports the role of endoreduplication as an important determinant of the final cell size and suggests a possible interaction through carbon allocation and metabolism.
Document type :
Preprints, Working Papers, ...
Complete list of metadata

Cited literature [57 references]  Display  Hide  Download

https://hal.inria.fr/hal-01953178
Contributor : Jean-Luc Gouzé <>
Submitted on : Wednesday, December 12, 2018 - 4:37:46 PM
Last modification on : Wednesday, February 17, 2021 - 6:34:04 PM
Long-term archiving on: : Wednesday, March 13, 2019 - 4:19:32 PM

File

BaldazziEtAl_preprintV1.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : hal-01953178, version 1

Citation

Valentina Baldazzi, Pierre Valsesia, Michel Génard, Nadia Bertin. Organ-wide and ploidy-dependent regulations both contribute to cell size determination: evidence from a computational model of tomato fruit. 2018. ⟨hal-01953178⟩

Share

Metrics

Record views

243

Files downloads

270