Light Regulation of Stomatal Movement

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 res...

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Veröffentlicht in:Annual review of plant biology 2007-01, Vol.58 (1), p.219-247
Hauptverfasser: Shimazaki, K, Doi, M, Assmann, S.M, Kinoschita, T
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:1543-5008
1545-2123
DOI:10.1146/annurev.arplant.57.032905.105434