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Polar Auxin Transport: Cell Polarity to Patterning

  • Kalika PrasadEmail author
  • Pankaj DhonuksheEmail author
Chapter
Part of the Signaling and Communication in Plants book series (SIGCOMM, volume 17)

Abstract

Auxin is a signaling molecule with profound influence on plant morphogenesis. Because of its activity gradient-related effects on plant development and response programs, it is considered as a plant morphogen. Auxin displays a spectacular ability to mobilize in a cell-to-cell and polar fashion. Auxin efflux carrier PIN proteins direct this intercellular flow of auxin and thus bear a rate-limiting effect on the formation of auxin activity gradients. With this influence on directionality and amount of auxin transport, PINs play crucial roles in plant body organization and connect cell polarity to plant patterning. As a consequence, mechanisms regulating the localization of PINs are widely investigated. Recent work uncovers the roles of vesicle trafficking regulator ARF–GEF GNOM, a kinase PINOID, a SNX1–VPS29 retromer complex, ROP-GTPases, Rab-GTPases, endocytosis regulator clathrin, membrane sterol composition, and cytoskeleton for subcellular PIN trafficking and their polar localization. In this chapter, we cover the state of the art of polar auxin transport and its impact on plant morphogenesis.

Keywords

Lateral Root Auxin Transport Auxin Response Factor Polar Auxin Transport Pericycle Cell 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

P.D. is supported by the Utrecht University Starting Independent Investigator Grant and Netherlands Organisation for Scientific Research’s VIDI grant. KP is supported by IISER TVM startup grant.

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© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.School of BiologyIndian Institute of Science Education and ResearchThiruvananthapuramIndia
  2. 2.Section of Cell Biology, Faculty of Science, Department of BiologyUtrecht UniversityUtrechtThe Netherlands

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