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Regulation of Polar Auxin Transport by Protein Phosphorylation

  • M. Carmen MartínezEmail author
  • Laia Armengot
  • M. Mar Marquès-Bueno
Chapter
Part of the Signaling and Communication in Plants book series (SIGCOMM, volume 17)

Abstract

Protein phosphorylation is one of the most important posttranslational mechanisms regulating polar auxin transport (PAT). The best known example is the phosphorylation carried out by the protein kinase PINOID (PID), which determines PIN polar targeting at the plasma membrane. PID belongs to the family of plant AGC kinases, which play prominent roles in the regulation of PAT and in the cross talk between PAT and the light-signaling pathways. Moreover, kinases belonging to other families, such as protein kinase CK2 or MAP kinases, are now emerging as important regulators of PIN recycling and/or other aspects of PAT, and the phosphoinositide biosynthetic pathway appears to play a significant role on PIN trafficking. On the other hand, identification of protein phosphatases that may reverse the effects of protein kinases is far behind, although rapid progress is being made, providing new insights about the role of protein phosphorylation on PAT regulation.

Keywords

Phosphatidic Acid Auxin Signaling Lateral Root Formation Polar Auxin Transport Columella 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.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • M. Carmen Martínez
    • 1
    Email author
  • Laia Armengot
    • 1
  • M. Mar Marquès-Bueno
    • 1
  1. 1.Departament de Bioquímica i Biologia MolecularUniversitat Autònoma de BarcelonaBellaterra, BarcelonaSpain

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