A model-based analysis of the dynamics of carbon balance at the whole-plant level in Arabidopsis thaliana

Functional Plant Biology : FPB
A ChristopheJérémie Lecœur

Abstract

Arabidopsis thaliana (L.) Heynh. is used as a model plant in many research projects. However, few models simulate its growth at the whole-plant scale. The present study describes the first model of Arabidopsis growth integrating organogenesis, morphogenesis and carbon-partitioning processes for aerial and subterranean parts of the plant throughout its development. The objective was to analyse competition among sinks as they emerge from patterns of plant structural development. The model was adapted from the GreenLab model and was used to estimate organ sink strengths by optimisation against biomass measurements. Dry biomass production was calculated by a radiation use efficiency-based approach. Organogenesis processes were parameterised based on experimental data. The potential of this model for growth analysis was assessed using the Columbia ecotype, which was grown in standard environmental conditions. Three phases were observed in the overall time course of trophic competition within the plant. In the vegetative phase, no competition was observed. In the reproductive phase, competition increased with a strong increase when lateral inflorescences developed. Roots and internodes and structures bearing siliques were strong sink...Continue Reading

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Citations

Apr 20, 2010·Journal of Experimental Botany·Graeme L HammerRussell C Muchow
Feb 1, 2019·NPJ Systems Biology and Applications·Lisa KüstnerArnd G Heyer
Dec 10, 2009·Journal of Experimental Botany·J VosP H B de Visser
Feb 1, 2009·Functional Plant Biology : FPB·Benoît PallasJérémie Lecoeur
May 25, 2012·The New Phytologist·MengZhen KangPhilippe de Reffye
Sep 10, 2014·Proceedings of the National Academy of Sciences of the United States of America·Yin Hoon ChewAndrew J Millar
May 16, 2019·Journal of Experimental Botany·Argyris ZardilisAndrew J Millar
Apr 9, 2011·Plant Physiology·Florent PantinBertrand Muller
Feb 27, 2014·Plant Physiology·François TardieuClaude Welcker

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