A modelling framework for the simulation of signal transport within 3D structure: application for the simulation of within-tree variability in floral induction in apple trees - Archive ouverte HAL Access content directly
Conference Papers Year : 2020

A modelling framework for the simulation of signal transport within 3D structure: application for the simulation of within-tree variability in floral induction in apple trees

(1, 2) , (2) , (3, 1, 4) , (2) , (2) , (1)
1
2
3
4

Abstract

Organ development and meristem fate is partly determined by endogenous signals moving within plants. These signals (e.g. hormones, sugar…) originate from organs considered as sources (roots, leaves, seeds…) and act on meristems to trigger developmental processes such as transition toward flowering. Functional structural plant model (FSPM) are of major interest as they are based on an explicit description of plant architecture needed for simulating transports within plants. Transport or fluxes have been modeled in FSPM with a special consideration on carbon allocation (Génard et al., 2008). Approaches for simulating hormone fluxes are scarce, adapted to plant with simple architecture and usually associated with a comprehensive knowledge on the processes to be simulated (Prusinkiewicz et al., 2009); thus limiting their adaptability in various contexts. In this study, we present a generic model for simulating signal fluxes and their impact on meristem fates in complex 3D tree structure. We applied this model to the simulation of within tree variability of floral induction in the apple tree, as a first case of study. Previous experiments (Belhassine et al., 2019) showed that floral induction in meristems occurs less often in the presence of fruit whereas it is favoured by the presence of leaves. Furthermore, the influences of fruit and leaves on the floral induction of meristems depend on the distances of those organs within the tree structure. Fruit and leaves were thus assumed to be sources of inhibiting signals (possibly gibberellins from seeds) and activating signals (possibly FT protein), respectively. However, the distance at which these signals move within the structure and the relative sensitivity of the meristems to these signals are highly difficult to estimate from experimental studies, only.
Fichier principal
Vignette du fichier
abstract1.pdf (1.66 Mo) Télécharger le fichier
Origin : Explicit agreement for this submission

Dates and versions

hal-03059482 , version 1 (23-09-2021)

Licence

Attribution - NonCommercial - CC BY 4.0

Identifiers

  • HAL Id : hal-03059482 , version 1

Cite

Fares Belhassine, Damien Fumey, Christophe Pradal, Jérôme Chopard, Evelyne Costes, et al.. A modelling framework for the simulation of signal transport within 3D structure: application for the simulation of within-tree variability in floral induction in apple trees. FSPM 2020 - 9th International Conference on Functional-Structural Plant Models, Hochschule Geisenheim University; University of Hannover, Oct 2020, Hannover / Virtual, Germany. pp.16-17. ⟨hal-03059482⟩
92 View
97 Download

Share

Gmail Facebook Twitter LinkedIn More