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Title

Surfing the Hyperbola Equations of the Steady-State Farquhar–von Caemmerer–Berry C3 Leaf Photosynthesis Model: What Can a Theoretical Analysis of Their Oblique Asymptotes and Transition Points Tell Us?

AuthorsMiranda-Apodaca, Jon; Marcos Barbero, Emilio L.; Morcuende, Rosa ; Arellano, Juan B.
KeywordsFvCB model
Mesophyll conductance
Leaf photosynthesis
Net CO2 assimilation rate
Resistance to CO2 diffusion
Rubisco
Issue Date2020
PublisherSpringer
CitationBulletin of Mathematical Biology 82: 3 (2020)
AbstractThe asymptotes and transition points of the net CO2 assimilation (A/Ci) rate curves of the steady-state Farquhar–von Caemmerer–Berry (FvCB) model for leaf photosynthesis of C3 plants are examined in a theoretical study, which begins from the exploration of the standard equations of hyperbolae after rotating the coordinate system. The analysis of the A/Ci quadratic equations of the three limitation states of the FvCB model—abbreviated as Ac, Aj and Ap—allows us to conclude that their oblique asymptotes have a common slope that depends only on the mesophyll conductance to CO2 diffusion (gm). The limiting values for the transition points between any two states of the three limitation states c, j and p do not depend on gm, and the results are therefore valid for rectangular and non-rectangular hyperbola equations of the FvCB model. The analysis of the variation of the slopes of the asymptotes with gm casts doubts about the fulfilment of the steady-state conditions, particularly, when the net CO2 assimilation rate is inhibited at high CO2 concentrations. The application of the theoretical analysis to extended steady-state FvCB models, where the hyperbola equations of Ac, Aj and Ap are modified to accommodate nitrogen assimilation and amino acids export via the photorespiratory pathway, is also discussed
Description22 páginas, 2 tablas, 4 figuras.
Publisher version (URL)http://dx.doi.org/10.1007/s11538-019-00676-z
URIhttp://hdl.handle.net/10261/210546
DOI10.1007/s11538-019-00676-z
ISSN0092-8240
E-ISSN1522-9602
Appears in Collections:(IRNASA) Artículos
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