Plant Physiol. Drug Metab Dispos
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Plant Physiology 63:887-891 (1979)
© 1979 American Society of Plant Biologists

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Articles

Effects of Glycidate on Carbon Dioxide Fixation with Isolated Spinach Chloroplasts 1

Günter F. Wildner and Christer Larsson2

a Lehrstuhl für Biochemie der Pflanzen, Abteilung Biologie, Ruhr-Universität Bochum, West Germany

Glycidate (2,3-epoxypropionate) stimulated CO2 fixation in isolated spinach chloroplasts up to 100%. In the presence of glycidate the initial lag phase was abolished and the chloroplasts exported mainly 3-phosphoglycerate instead of dihydroxyacetone phosphate.

Glycolate formation was not inhibited by glycidate, which is in agreement with the observation that preactivated ribulose-1,5-bisphosphate oxygenase is not inhibited by this compound. Furthermore, glycidate had no effect on electron transport (NADP reduction) and photophosphorylation, nor was a change in the coupling ratio observed.

2 Present address: Department of Biochemistry, University of Lund, P.O. Box 740, S-22007 Lund 7, Sweden.

1 This work was supported in part by a fellowship to C. L. from the Swedish Natural Science Research Council and from the Deutsche Forschungsgemeinschaft to G. F. W.






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Copyright © 1979 by the American Society of Plant Biologists