
%0 Journal Article
%A Furbank, RT 
%A Badger, MR 
%T Photosynthetic Oxygen Exchange in Attached Leaves of C<sub>4</sub> Monocotyledons
%J Functional Plant Biology
%D 1982/10/01
%V 9
%N 5
%P 553-558
%K 
%R https://doi.org/10.1071/PP9820553
%U https://www.publish.csiro.au/paper/PP9820553 
%X Photosynthetic O2 evolution, O2 uptake and CO2 uptake by intact leaves from plants of the three C4 decarboxylation types were examined using mass-spectrometric gas-exchange and stable isotope techniques. All species showed a relative insensitivity of O2 uptake to CO2 concentration. The uptake rates observed were between 0.2 and 1 nmol O2 cm-2 S-1 at the CO2 compensation point. At ambient external CO2, NADP-malic enzyme type species showed the lowest average O2 uptake, phosphoenolpyruvate carboxykinase types the highest values, and NAD-malic enzyme types showed intermediate values for O2 uptake. These results are discussed in relation to the contributions to O2 uptake of ribulosebisphosphate oxygenase and photoreduction of oxygen. 
