Directional cell-to-cell transport of auxin. Transporter abundance, polarity and activity influence local hormone distribution.
Asymmetric localization of transport components can generate tissue-scale patterns from local cell-to-cell transfers. The resulting auxin distribution can guide growth and patterning, while a concentration maximum can reflect transport, synthesis and removal together. [ref]
Molecular Biology of the Cell, 4th edition by Bruce Alberts and others. Chapter 21, Development of Plants
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