Evidence for a respiratory chain in the chloroplast
- 1 July 1982
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 79 (14), 4352-4356
- https://doi.org/10.1073/pnas.79.14.4352
Abstract
Evidence is given for the existence of an electron transport pathway to oxygen in the thylakoid membranes of chloroplasts (chlororespiration). Plastoquinone is shown to be a redox carrier common to both photosynthetic and chlororespiratory pathways. It is shown that, in dark-adapted chloroplasts, an electrochemical gradient is built up across the thylakoid membrane by transfer of electrons through the chlororespiratory chain as well as by reverse functioning of the chloroplast ATPases. It is proposed that these mechanisms ensure recycling of the ATP and NAD(P)H generated by the glycolytic pathway converting starch into triose phosphates. Chlororespiration is thus an O(2)-uptake process distinct from photorespiration and the Mehler reaction. The evolutionary significance of chlororespiration is discussed.This publication has 17 references indexed in Scilit:
- Inhibition of cytochrome c oxidase function by dicyclohexylcarbodiimideBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1981
- The involvement of ferredoxin-NADP+ reductase in cyclic electron transport in chloroplastsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1981
- Dependence of Delayed Luminescence upon Adenosine Triphosphatase Activity in ChlorellaPlant Physiology, 1980
- The respiratory chain of Paramecium tetraurelia in wild type and the mutant Cl1 II. Cyanide-insensitive respiration. Function and regulationBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1979
- Effects of sodium azide on photosystem II of Chlorella pyrenoidosaBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1977
- Effect of the transmembrane electric field on the photochemical and quenching properties of Photosystem II in vivoBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1976
- A chlorophyll-protein complex lacking in photosystem I mutants of Chlamydomonas reinhardtii.The Journal of cell biology, 1975
- A kinetic analysis of the oxidizing and reducing sides of the O2-evolving system of photosynthesisBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1973
- Feedback controlling oxygen production in a cross-reaction between two photosystems in photosynthesisBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1973
- New results on the mode of action of 3,-(3,4-dichlorophenyl)-1,1-dimethylurea in spinach chloroplastsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1973