Auxin transport - shaping the plant

Curr Opin Plant Biol. 2003 Feb;6(1):7-12. doi: 10.1016/s1369526602000031.


Plant growth is marked by its adaptability to continuous changes in environment. A regulated, differential distribution of auxin underlies many adaptation processes including organogenesis, meristem patterning and tropisms. In executing its multiple roles, auxin displays some characteristics of both a hormone and a morphogen. Studies on auxin transport, as well as tracing the intracellular movement of its molecular components, have suggested a possible scenario to explain how growth plasticity is conferred at the cellular and molecular level. The plant perceives stimuli and changes the subcellular position of auxin-transport components accordingly. These changes modulate auxin fluxes, and the newly established auxin distribution triggers the corresponding developmental response.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Adaptation, Physiological / physiology
  • Arabidopsis / growth & development
  • Arabidopsis / metabolism
  • Arabidopsis Proteins / metabolism
  • Biological Transport / physiology
  • Immunohistochemistry
  • Indoleacetic Acids / metabolism*
  • Meristem / cytology
  • Meristem / physiology
  • Morphogenesis / physiology
  • Plant Development*
  • Plant Growth Regulators / metabolism
  • Plants / metabolism
  • Protein Transport / physiology
  • Signal Transduction / physiology
  • Tropism / physiology


  • Arabidopsis Proteins
  • Indoleacetic Acids
  • PIN3 protein, Arabidopsis
  • Plant Growth Regulators