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Using tunable diode laser spectroscopy to measure carbon isotope discrimination and mesophyll conductance to CO 2 diffusion dynamically at different CO 2 concentrations

Tazoe, Youshi; von Caemmerer, Susanne; Estavillo, Gonzalo; Evans, John


In C3 leaves, the mesophyll conductance to CO2 diffusion, gm, determines the drawdown in CO2 concentration from intercellular airspace to the chloroplast stroma. Both gm and stomatal conductance limit photosynthetic rate and vary in response to the environment. We investigated the response of gm to changes in CO2 in two Arabidopsis genotypes (including a mutant with open stomata, ost1), tobacco and wheat. We combined measurements of gas exchange with carbon isotope discrimination using tunable...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
Source: Plant Cell and Environment
DOI: 10.1111/j.1365-3040.2010.02264.x


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