Abstract
Bundle sheath and mesophyll cells were successfully separated from fully developed leaves of Digitaria sanguinalis (L.) Scop. to study the photosynthetic metabolism of these distinct cell types. Ribulose-1,5-diphosphate and ribose-5-phosphate enhanced CO 2 fixation by bundle sheath cells and had little effect on CO 2 fixation in mesophyll cells. In contrast, pyruvate induced CO 2 fixation in mesophyll cells and had no effect in bundle sheath cells. Phosphoenolpyruvate carboxylase is localized in mesophyll cells and ribulose-1,5-diphosphate carboxylase is localized in bundle sheath cells. The results establish that mesophyll cells fix CO 2 by a β-carboxylation while the bundle sheath cells fix CO 2 by carboxylation of ribulose-1,5-diphosphate.
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 callMore From: Biochemical and Biophysical Research Communications
Disclaimer: 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.
