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. 2013 Jan 28;8(1):e54802. doi: 10.1371/journal.pone.0054802

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© 2013 Walker et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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These simulations are run on a square grid much larger than shown here (see other figures with square grids) but we have zoomed in on the PIN distribution around the source for clarity. The top-centre cell of the grid is a source. (A) Linear feedback ( = 1.0). (B) = 1.5. This result is representative of similar simulations for any . The length of the vascular strand is sensitive to changes in the background auxin degradation and the strength of the source. (C) The colour bar indicates the auxin concentration in µmol µm⁻ ³ in this and all remaining simulations.

Inline graphic — These simulations are run on a square grid much larger than shown here (see other figures with square grids) but we have zoomed in on the PIN distribution around the source for clarity. The top-centre cell of the grid is a source. (A) Linear feedback ( = 1.0). (B) = 1.5. This result is representative of similar simulations for any . The length of the vascular strand is sensitive to changes in the background auxin degradation and the strength of the source. (C) The colour bar indicates the auxin concentration in µmol µm⁻ ³ in this and all remaining simulations.