2011
DOI: 10.1104/pp.111.172346
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The Mechanistic Basis of Internal Conductance: A Theoretical Analysis of Mesophyll Cell Photosynthesis and CO2 Diffusion

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 o… Show more

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Cited by 216 publications
(306 citation statements)
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References 84 publications
(138 reference statements)
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“…As sunflower has a relatively high chloroplast volume-to-mesophyll surface area ratio (Tomás et al, 2013), we assumed a value of 1.74 3 10 26 m 3 stroma m 22 V s , a value that is twice that assumed by Tholen and Zhu (2011). In our model, we represent the stroma and mitochondria as a single volume assuming a mitochondria-to-stroma volume ratio of 0.03 m 3 m 23 (Tholen and Zhu, 2011). the R library deSolve (Soetaert et al, 2010).…”
Section: Leaf Geometry Materials Properties and Boundary Conditionsmentioning
confidence: 99%
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“…As sunflower has a relatively high chloroplast volume-to-mesophyll surface area ratio (Tomás et al, 2013), we assumed a value of 1.74 3 10 26 m 3 stroma m 22 V s , a value that is twice that assumed by Tholen and Zhu (2011). In our model, we represent the stroma and mitochondria as a single volume assuming a mitochondria-to-stroma volume ratio of 0.03 m 3 m 23 (Tholen and Zhu, 2011). the R library deSolve (Soetaert et al, 2010).…”
Section: Leaf Geometry Materials Properties and Boundary Conditionsmentioning
confidence: 99%
“…Compared with models based on the circuitresistance analog, FEM can more accurately describe the interactive processes of CO 2 diffusion and photosynthetic reaction within a spatially explicit leaf geometry (Parkhurst, 1994;Aalto and Juurola, 2002;Tholen and Zhu, 2011;Ho et al, 2016). We assume that since sunflower leaves have a relatively high stomatal density and a relatively porous, isotropic mesophyll airspace network, a 1-D model accurately represents the interaction between CO 2 diffusional limitation and reactive demand.…”
Section: -D Porous Medium Fem Of Co 2 Diffusion and Photosynthesismentioning
confidence: 99%
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