Abstract
The (13)C nuclear magnetic resonance spectra of sucrose extracted from intact soybean and corn leaves labeled with (13)CO(2) for 5 to 180 minutes have been obtained at 22.6 megahertz. The spectra provide a direct determination of the relative concentrations of (12)C-(13)C and (13)C-(13)C pairs of carbons in the labeled triose components of sucrose. This distribution of label is strongly dependent on the O(2) concentrations used during labeling for soybean but not for corn. Based on the time dependence of the experimental labeling patterns, photorespiration in air appears to be a sizable fraction of the apparent photosynthetic rate for soybean, but not for corn.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
