Related Experiment Video
Updated: Jan 6, 2026

Relating Stomatal Conductance to Leaf Functional Traits
Published on: October 12, 2015
The influence of stomatal morphology and distribution on photosynthetic gas exchange
Emily L Harrison1, Lucia Arce Cubas1, Julie E Gray1
1Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, Sheffield, UK.
Abstract:
The intricate and interconnecting reactions of C3 photosynthesis are often limited by one of two fundamental processes: the conversion of solar energy into chemical energy, or the diffusion of CO2 from the atmosphere through the stomata, and ultimately into the chloroplast. In this review, we explore how the contributions of stomatal morphology and distribution can affect photosynthesis, through changes in gaseous exchange. The factors driving this relationship are considered, and recent results from studies investigating the effects of stomatal shape, size, density and patterning on photosynthesis are discussed. We suggest that the interplay between stomatal gaseous exchange and photosynthesis is complex, and that a disconnect often exists between the rates of CO2 diffusion and photosynthetic carbon fixation. The mechanisms that allow for substantial reductions in maximum stomatal conductance without affecting photosynthesis are highly dependent on environmental factors, such as light intensity, and could be exploited to improve crop performance.
More Related Videos
Related Concept Videos
Regulation of Transpiration by Stomata
External and Internal Respiration
Light Acquisition
Physical Principles Governing Gas Exchange
Gas Laws Governing Respiration
The behavior of gases is guided by Dalton's Law of partial pressures and Henry's Law.
Dalton's Law asserts that the total...
Adaptations that Reduce Water Loss
Xylem and Transpiration-driven Transport of Resources

