Light regulation of stomatal movement

Annu Rev Plant Biol. 2007;58:219-47. doi: 10.1146/annurev.arplant.57.032905.105434.

Abstract

Stomatal pores, each surrounded by a pair of guard cells, regulate CO2 uptake and water loss from leaves. Stomatal opening is driven by the accumulation of K+ salts and sugars in guard cells, which is mediated by electrogenic proton pumps in the plasma membrane and/or metabolic activity. Opening responses are achieved by coordination of light signaling, light-energy conversion, membrane ion transport, and metabolic activity in guard cells. In this review, we focus on recent progress in blue- and red-light-dependent stomatal opening. Because the blue-light response of stomata appears to be strongly affected by red light, we discuss underlying mechanisms in the interaction between blue-light signaling and guard cell chloroplasts.

Publication types

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

MeSH terms

  • Abscisic Acid / metabolism
  • Chloroplasts / metabolism
  • Chloroplasts / physiology
  • Chloroplasts / radiation effects*
  • Ion Transport
  • Light*
  • Models, Biological*
  • Photosynthetic Reaction Center Complex Proteins / metabolism
  • Photosynthetic Reaction Center Complex Proteins / physiology
  • Plant Cells
  • Plant Proteins / metabolism
  • Plant Proteins / physiology
  • Plants / metabolism
  • Plants / radiation effects*
  • Potassium / metabolism
  • Proton Pumps / metabolism
  • Proton Pumps / radiation effects
  • Signal Transduction / drug effects
  • Signal Transduction / radiation effects

Substances

  • Photosynthetic Reaction Center Complex Proteins
  • Plant Proteins
  • Proton Pumps
  • Abscisic Acid
  • Potassium