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First published online July 24, 2009
doi: 10.1242/10.1242/dev.030353

Development 136, 2675-2688 (2009)
Published by The Company of Biologists 2009
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Primer

Auxin transport routes in plant development

Jan Petrásek1,2 and Jirí Friml3,4,*

1 Institute of Experimental Botany, ASCR, 165 02 Prague 6, Czech Republic.
2 Department of Plant Physiology, Faculty of Science, Charles University, Vinicná 5, 128 44 Prague 2, Czech Republic.
3 Department of Plant Systems Biology, VIB and Department of Plant Biotechnology and Genetics, Ghent University, Technologiepark 927, 9052 Gent, Belgium.
4 Department of Functional Genomics and Proteomics, Faculty of Science, Masaryk University, 625 00 Brno, Czech Republic.

* Author for correspondence (e-mail: jiri.friml{at}psb.vib-ugent.be)

SUMMARY

The differential distribution of the plant signaling molecule auxin is required for many aspects of plant development. Local auxin maxima and gradients arise as a result of local auxin metabolism and, predominantly, from directional cell-to-cell transport. In this primer, we discuss how the coordinated activity of several auxin influx and efflux systems, which transport auxin across the plasma membrane, mediates directional auxin flow. This activity crucially contributes to the correct setting of developmental cues in embryogenesis, organogenesis, vascular tissue formation and directional growth in response to environmental stimuli.


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© The Company of Biologists Ltd 2009