ArticlePlant physiology2011
The mechanistic basis of internal conductance: a theoretical analysis of mesophyll cell photosynthesis and CO2 diffusion.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 79 papers.
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79 citing papers in PubMed, 227 citations in OpenAlex.
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- Exploring the Potential of Selenium-Containing Amine (Se-AMA) to Enhance Photosynthesis and Leaf Water Content: New Avenues for Carbonic Anhydrase Modulation inPlants (Basel, Switzerland) · 2025Article
- Leaf nitrogen allocation to non-photosynthetic apparatus reduces mesophyll conductance under combined drought-salt stress inFrontiers in plant science · 2025Article
- Illuminating stomatal responses to red light: establishing the role of Ci-dependent versus -independent mechanisms in control of stomatal behaviour.Journal of experimental botany · 2024Article
- Perspectives on improving photosynthesis to increase crop yield.The Plant cell · 2024Review
- Reaction-diffusion modeling provides insights into biophysical carbon-concentrating mechanisms in land plants.Plant physiology · 2024Article
- Variation of mesophyll conductance mediated by nitrogen form is related to changes in cell wall property and chloroplast number.Horticulture research · 2024Article
- Cooperation of an external carbonic anhydrase and HCO3- transporter supports underwater photosynthesis in submerged leaves of the amphibious plant Hygrophila difformis.Annals of botany · 2024Article
- Increasing stomatal COFrontiers in plant science · 2024Article
- Using Carbon Stable Isotopes to Study CMethods in molecular biology (Clifton, N.J.) · 2024Article
- Prediction of biomass accumulation and tolerance of wheat seedlings to drought and elevated temperatures using hyperspectral imaging.Frontiers in plant science · 2024Article
- Conserved cellular patterning in the mesophyll of rice leaves.Plant direct · 2023Article
- The role of chloroplast movement in C4 photosynthesis: a theoretical analysis using a three-dimensional reaction-diffusion model for maize.Journal of experimental botany · 2023Article
- COPlanta · 2023Review
- Creating a virtual leaf.AoB PLANTS · 2023Review
- Toward mechanistic modeling and rational engineering of plant respiration.Plant physiology · 2023Article
19 more citing papers are in PubMed but not listed here.
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Photosynthesis is limited by the conductance of carbon dioxide (CO(2)) from intercellular spaces to the sites of carboxylation. Although the concept of internal conductance (g(i)) has been known for over 50 years, shortcomings in the theoretical description of this process may have resulted in a limited understanding of the underlying mechanisms. To tackle this issue, we developed a three-dimensional reaction-diffusion model of photosynthesis in a typical C(3) mesophyll cell that includes all major components of the CO(2) diffusion pathway and associated reactions. Using this novel systems model, we systematically and quantitatively examined the mechanisms underlying g(i). Our results identify the resistances of the cell wall and chloroplast envelope as the most significant limitations to photosynthesis. In addition, the concentration of carbonic anhydrase in the stroma may also be limiting for the photosynthetic rate. Our analysis demonstrated that higher levels of photorespiration increase the apparent resistance to CO(2) diffusion, an effect that has thus far been ignored when determining g(i). Finally, we show that outward bicarbonate leakage through the chloroplast envelope could contribute to the observed decrease in g(i) under elevated CO(2). Our analysis suggests that physiological and anatomical features associated with g(i) have been evolutionarily fine-tuned to benefit CO(2) diffusion and photosynthesis. The model presented here provides a novel theoretical framework to further analyze the mechanisms underlying diffusion processes in the mesophyll.
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