Uncertainty in measurements of the photorespiratory CO₂ compensation point and its impact on models of leaf photosynthesis.

ABSTRACT: Rates of carbon dioxide assimilation through photosynthesis are readily modeled using the Farquhar, von Caemmerer, and Berry (FvCB) model based on the biochemistry of the initial Rubisco-catalyzed reaction of net C₃ photosynthesis. As models of CO₂ assimilation rate are used more broadly for simulating photosynthesis among species and across scales, it is increasingly important that their temperature dependencies are accurately parameterized. A vital component of the FvCB model, the photorespiratory CO₂ compensation point (Γ _*), combines the biochemistry of Rubisco with the stoichiometry of photorespiratory release of CO₂. This report details a comparison of the temperature response of Γ _* measured using different techniques

SUBMITTER: Walker BJ 

PROVIDER: S-EPMC5443873 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature