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A surface model of nonlinear, non-steady-state phloem transport

Youcef Mammeri Damien Sellier

*Corresponding author: Youcef Mammeri youcef.mammeri@u-picardie.fr

MBE2017,4,1055doi:10.3934/mbe.2017055

Phloem transport is the process by which carbohydrates produced by photosynthesis in the leaves get distributed in a plant. According to Münch, the osmotically generated hydrostatic phloem pressure is the force driving the long-distance transport of photoassimilates. Following Thompson and Holbrook[35]'s approach, we develop a mathematical model of coupled water-carbohydrate transport. It is first proven that the model presented here preserves the positivity. The model is then applied to simulate the flow of phloem sap for an organic tree shape, on a 3D surface and in a channel with orthotropic hydraulic properties. Those features represent an significant advance in modelling the pathway for carbohydrate transport in trees.

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