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Subcellular trafficking of PIN auxin efflux carriers in auxin transport

Authors
Journal
European Journal of Cell Biology
0171-9335
Publisher
Elsevier
Publication Date
Volume
89
Identifiers
DOI: 10.1016/j.ejcb.2009.11.003
Keywords
  • Auxin Distribution
  • Pin
  • Dynamics
  • Polarity
  • Endocytic Recycling
Disciplines
  • Biology
  • Ecology
  • Geography

Abstract

Abstract The directional transport of the plant hormone auxin is a unique process mediating a wide variety of developmental processes. Auxin movement between cells depends on AUX1/LAX, PGP and PIN protein families that mediate auxin transport across the plasma membrane. The directionality of auxin flow within tissues is largely determined by polar, subcellular localization of PIN auxin efflux carriers. PIN proteins undergo rapid subcellular dynamics that is important for the process of auxin transport and its directionality. Furthermore, various environmental and endogenous signals can modulate trafficking and polarity of PIN proteins and by this mechanism change auxin distribution. Thus, the subcellular dynamics of auxin transport proteins represents an important interface between cellular processes and development of the whole plant. This review summarizes our recent contributions to the field of PIN trafficking and auxin transport regulation.

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