Polar auxin transport: controlling where and how much

Trends Plant Sci. 2001 Nov;6(11):535-42. doi: 10.1016/s1360-1385(01)02101-x.

Abstract

Auxin is transported through plant tissues, moving from cell to cell in a unique polar manner. Polar auxin transport controls important growth and developmental processes in higher plants. Recent studies have identified several proteins that mediate polar auxin transport and have shown that some of these proteins are asymmetrically localized, paving the way for studies of the mechanisms that regulate auxin transport. New data indicate that reversible protein phosphorylation can control the amount of auxin transport, whereas protein secretion through Golgi-derived vesicles and interactions with the actin cytoskeleton might regulate the localization of auxin efflux complexes.

Publication types

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

MeSH terms

  • Actins / metabolism
  • Arabidopsis Proteins / metabolism
  • Cytoskeleton / metabolism
  • Indoleacetic Acids / genetics
  • Indoleacetic Acids / metabolism*
  • Membrane Transport Proteins / metabolism
  • Phosphoprotein Phosphatases / metabolism
  • Phosphorylation
  • Plant Proteins / metabolism
  • Plants / metabolism*
  • Protein Transport
  • Protein-Serine-Threonine Kinases / metabolism

Substances

  • Actins
  • Arabidopsis Proteins
  • Indoleacetic Acids
  • Membrane Transport Proteins
  • PIN2 protein, Arabidopsis
  • Plant Proteins
  • Protein-Serine-Threonine Kinases
  • Phosphoprotein Phosphatases