Abstract
Leaf venation of plants displays diverse pattern and this is one of the most interesting pattern formations in organism. Here we investigated an integrated model of the canalization hypothesis and the relationship between auxin and PIN1.
This model can generate so-called "polar auxin transport" from almost uniform field. Using this feature we tried to form various leaf venation patterns. First, venation patterns largely depend on the form of leaf area, for example, dicot pattern and Ginkgo pattern from different diamond-shaped leaves. Place and direction of cell division also affects venation pattern. Anisotropy of auxin diffusion has also effect on pattern formation; veins tend to elongate along more diffusible direction of auxin. Moreover, under the condition of cell division at the base of a leaf like monocot, parallel pattern is preferably generated. These results indicate that the dynamics generates diverse venation patterns of plants according to various conditions.
