Vacuolar transporters in their physiological context

Annu Rev Plant Biol. 2012;63:183-213. doi: 10.1146/annurev-arplant-042811-105608. Epub 2012 Feb 9.

Abstract

Vacuoles in vegetative tissues allow the plant surface to expand by accumulating energetically cheap inorganic osmolytes, and thereby optimize the plant for absorption of sunlight and production of energy by photosynthesis. Some specialized cells, such as guard cells and pulvini motor cells, exhibit rapid volume changes. These changes require the rapid release and uptake of ions and water by the vacuole and are a prerequisite for plant survival. Furthermore, seed vacuoles are important storage units for the nutrients required for early plant development. All of these fundamental processes rely on numerous vacuolar transporters. During the past 15 years, the transporters implicated in most aspects of vacuolar function have been identified and characterized. Vacuolar transporters appear to be integrated into a regulatory network that controls plant metabolism. However, little is known about the mode of action of these fundamental processes, and deciphering the underlying mechanisms remains a challenge for the future.

Publication types

  • Review

MeSH terms

  • Biological Transport
  • Carbohydrate Metabolism
  • Cation Transport Proteins / metabolism
  • Ion Exchange
  • Membrane Transport Proteins / metabolism*
  • Metals, Heavy / metabolism
  • Models, Biological
  • Monosaccharide Transport Proteins / metabolism
  • Organic Anion Transporters / metabolism
  • Photosynthesis / physiology*
  • Plant Cells / metabolism
  • Plant Cells / ultrastructure
  • Plant Proteins / metabolism
  • Plants / metabolism*
  • RNA / metabolism
  • Signal Transduction
  • Vacuoles / metabolism*
  • Vacuoles / ultrastructure

Substances

  • Cation Transport Proteins
  • Membrane Transport Proteins
  • Metals, Heavy
  • Monosaccharide Transport Proteins
  • Organic Anion Transporters
  • Plant Proteins
  • RNA