Figure 1.

Simulated architecture of a tomato plant (100 days old) using the dynamic 3D plant model (A), variation of the minimal water potential within the plant (C), variation of the Specific Leaf Area (SLA) with leaf age for the treatments (B), and schematic representation of the resource acquisition modeling and their transfer to the plant (D). Leaves are composed of different leaflets, which have similar incident radiation, transpiration, and photosynthesis. Water transfer is modeled according to the axial conductance and the distribution of the transpiration within the plant. Carbohydrate availability is assumed to be uniform in the phloem. Carbohydrate loading at leaf, carbohydrate reloading, and leakage along the path all lead to variations in storage, and therefore in carbohydrate concentration in the organ.