Stomatal pore length on adaxial leaf surface

Value 40 µm
Organism Tobacco Nicotiana tabacum
Reference Thomas, P. W., Woodward, F. I., and Quick, W. P. (2004). Systemic irradiance signalling in tobacco. New Phytol. 161, 193–198. DOI: 10.1046/j.1469-8137.2003.00954.x p.196 fig.3
Comments "The response of stomatal pore length to signalling is complex. Pore length increases significantly (ANOVA: F=51.9, df = 3, 32, P< 0.001) when the mature leaves are shaded (experiment one, Fig. 3). Stomatal pore size doesn’t change (ANOVA: F=2.3, df = 3, 16, P> 0.05) when the developing leaves are held at low irradiance (Fig. 4). Within both experiments stomatal pore aperture remained constant between treatment and control groups." Extracted by eye from Figure 3, high light condition for control. Adaxial surface is the side of the leaf facing the stem. Upward, sun-facing surface in tobacco.
Entered by Avi Flamholz
ID 111445