Stomatal pores, each surrounded by a pair of guard cells, regulate CO 2 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.
|Number of pages||29|
|Journal||Annual Review of Plant Biology|
|Publication status||Published - 2007|
All Science Journal Classification (ASJC) codes
- Molecular Biology
- Plant Science
- Cell Biology