# Coupling mechanical and hydraulic processes in multicellular models of plant development.

Ibrahim Cheddadi, Michel Génard, Nadia Bertin, Christophe Godin

► To cite this version:

Ibrahim Cheddadi, Michel Génard, Nadia Bertin, Christophe Godin. Coupling mechanical and hydraulic processes in multicellular models of plant development. W8 – Computing a tissue: Modeling multicellular systems “ECCB2016”, Sep 2016, The Hague, Netherlands. 2 p., 2016. [hal-01594819](https://hal.science/hal-01594819)

HAL Id: hal-01594819

https://hal.science/hal-01594819

Submitted on 3 Jun 2020

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# COMPUTING A TISSUE
## MODELING MULTICELLULAR SYSTEMS

September 4, 2016 | World Forum | The Hague, the Netherlands

ECCB 2016

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## SPEAKERS

- Christoph Godin

- Jörg Galle

- Stefan Hoehme

- Mark Alber

- Natalia Melkinova

- Niels Grabe

- Nadine Peyriéras

## ORGANIZERS

- Walter de Back

- Sara Montagna

- Roeland Merks

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TECHNISCHE
UNIVERSITÄT
DRESDEN

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ALMA MATER STUDIORUM
UNIVERSITA DI BOLOGNA

CWI

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Universiteit Leiden
CHRISTOPHE
GODIN

Plant Modeling and Computer Science
INRIA, France

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Coupling mechanical and hydraulic processes in
multicellular models of plant development

Ibrahim Cheddadi¹ and Christophe Godin¹

¹Virtual Plants INRIA-INRA team

Up to now, models of organ morphogenesis in plants have mainly focussed on the regulation of cell wall mechanical properties at cellular level, such as rigidity and mechanical anisotropy. However, growth is primarily powered by water fluxes and cell turgor.

In this work, we propose a new multicellular model to study the interaction between the hydraulic and mechanical processes involved in tissue development. In this model, turgor pressure appears as a flexible variable that can mediate between various growth constraints. We show that the coupling of both processes exhibits new emergent properties that can help interpret different aspects of morphogenesis in plant organs. In particular, in specific areas of the parameter space, the system can be interpreted as a new type of lateral inhibitory mechanism that could contribute to the amplification of organ shape differentiation.