Fulltext

A CO2 Concentrating System in Leaves of Higher C3-Plants Predicted by a Model Based on RuBP Carboxylase/Oxygenase Kinetics and 14CO2/12CO2 Exchange

MÄCHLER, F. ; LEHNHERR, B. ; SCHNYDER, H. ; NOSBERGER, J.

In: Journal of Experimental Botany, 1985, vol. 36, no. 10, p. 1542-1550

Ajouter à la liste personnelle
    Titre
    • A CO2 Concentrating System in Leaves of Higher C3-Plants Predicted by a Model Based on RuBP Carboxylase/Oxygenase Kinetics and 14CO2/12CO2 Exchange
    Auteur
    • MÄCHLER, F.. Institut für Pflanzenbau, Eidgenössische Technische Hochschule, Universitätstrasse 2, CH-8092 Zūrich, Switzerland
    • LEHNHERR, B.. Institut für Pflanzenbau, Eidgenössische Technische Hochschule, Universitätstrasse 2, CH-8092 Zūrich, Switzerland
    • SCHNYDER, H.. Institut für Pflanzenbau, Eidgenössische Technische Hochschule, Universitätstrasse 2, CH-8092 Zūrich, Switzerland
    • NOSBERGER, J.. Institut für Pflanzenbau, Eidgenössische Technische Hochschule, Universitätstrasse 2, CH-8092 Zūrich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Journal of Experimental Botany, 1985, vol. 36, no. 10, p. 1542-1550. Oxford University Press
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:293578
    Summary
    Mächler, F., Lehnherr, B., Schnyder, H. and Nösberger, J. 1985. A CO2 concentrating system in leaves of higher C3-plants predicted by a model based on RuBP carboxylase/oxygenase kinetics and 14CO2/12CO2 exchange.−J. exp. Bot. 36: 1542-1550. A model is presented which compares the ratio of the two activities of the enzyme nbulose bisphosphate carboxylase/oxygenase as determined in vitro with the ratio of photosynthesis to photorespiration in leaves as determined from differential 14CO2/12CO2 uptake or from CO2 compensation concentration. Discrepancies between measurements made in vitro and in vivo are attributed to the effect of a CO2 concentrating system in the leaf cells. Interference from dark respiration is discussed. A CO2 concentrating system is postulated which is efficient mainly at low temperature and low CO2 concentration