Light regulation of stomatal movements
by Shimazaki K., Doi M., Assmann S. M., Kinoshita T. (2007)
Ken-ichiro Shimazaki,1 Michio Doi,2 Sarah M. Assmann,3 and Toshinori Kinoshita1,4
1Department of Biology, Faculty of Science,
2Research and Development Center for Higher Education, Kyushu University, Ropponmatsu, Fukuoka, 810-8560, Japan
3Department of Biology, Pennsylvania State University, University Park, Pennsylvania 16802-5301
in Annual Review of Plant Biology. 58: 219-247., – doi:10.1146/annurev.arplant.57.032905.105434 –
Stomatal pores, each surrounded by a pair of guard cells, regulate CO2uptake 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.