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Physiological and Genetic Analysis of Plasma Membrane Aquaporin Functions in Arabidopsis

  • Patricia Gerbeau
  • Hélène Javot
  • Virginie Lauvergeat
  • Fabrice Martin-Laurent
  • Josette Güçlü
  • Véronique Santoni
  • Colette Tournaire
  • Pierre Ripoche
  • Christophe Maurel

Abstract

Terrestrial plants critically depend on a supply of water for their growth and development and display elaborate strategies to achieve water balance in the most adverse environments. The recent discovery in a large variety of organisms of water channel proteins named aquaporins has provided tremendous insights into the molecular mechanisms of transmembrane water transport and its regulation at the cellular level. Aquaporins belong to the large MIP family of membrane proteins, with members transporting water and/or small neutral solutes. Despite decades of physiological and biophysical research on water relations of plants, the discovery of aquaporins in both the intracellular and plasma membranes of plant cells was unexpected. This discovery revealed that the water and solute permeability of cell membranes may be more critical for plants than initially thought. The importance of aquaporins in plants is supported by their abundance, diversity and fine regulation at the gene and/or protein levels. Recent genetic and physiological evidence point to a crucial role for aquaporins in various processes including plant reproduction, cell elongation, root development and water uptake, and the adaptative responses of plants to dehydration and salinity.

Keywords

Water Permeability Plasma Membrane Vesicle Aquaporin Gene Arabidopsis Suspension Cell Active Water Channel 
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 Science+Business Media New York 2000

Authors and Affiliations

  • Patricia Gerbeau
    • 1
  • Hélène Javot
    • 1
  • Virginie Lauvergeat
    • 1
  • Fabrice Martin-Laurent
    • 2
  • Josette Güçlü
    • 2
  • Véronique Santoni
    • 1
  • Colette Tournaire
    • 1
  • Pierre Ripoche
    • 3
  • Christophe Maurel
    • 1
  1. 1.Biochimie et Physiologie Moléculaire des PlantesAGRO-M/INRA/CNRS UMR 5004Montpellier Cedex 01France
  2. 2.Institut des Sciences VégétalesCNRSGif-sur-Yvette CedexFrance
  3. 3.Service de Biologie CellulaireDépartement de Biologie Cellulaire et MoléculaireGif-sur-Yvette CedexFrance

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