Abstract
The results of measurements of proton-electron stoichiometry in chloroplast thylakoid membrane were examined. Various methods used for the measurement have been scrutinized. The stoichiometry detennined by different methods, at different stages of proton accumulation by thylakoids has been analysed. Taking this point into account as well as the values of stoichiometry expected due to operation of Q-cycle, the results obtained by flash and continuous illumination have been examined. Special atention has been paid to the effect of potential difference across the thylakoid membrane on the estimation of stoichiometry. Based on the results of the stoichiometry measurements, and on the functioning of b6 f complex. It is proposed that the conditions facilitating the Q cycle operation depend on the (1) frequent excitation of photosystems and (2) on the extent of plastoquinone pool reduction. It is concluded on the basis of experimental data that under physiological conditions at saturating light intensity, the H+/e- ratio in photosynthetic electron transport chain of higher plants is 3. The significance of this stoichiometry for satisfying the energy requirements during photosynthetic carbon reduction is emphasized.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Allred D.R. and Stachelin L.A. (1986) Spatial organization of the cytochrome b61-complex within chloroplast thylakoid membranes. Biochim Biophys Acta 849: 94–103
Anderson B. and Haehnel W. (1982) Location of photosystem I and photosystem II reaction centers in different thylakoid regions of stacked chloroplasts. FEBS Lett 146: 13–17
Auslander W. and Junge W. (1974) The electric generation in photosynthesis of green plants. I. Vectorial and protolytic properties of the electron transport chain. Biochim Biophys Acta 333: 59–70
Bendall O.S. (1982) Photosynthetic cytochromes of oxygenic organisms. Biochim Biophys Acta 683: 119–151
Bouges-Bocquet B. (1977) Cytochrome f and plastocyanin kinetics in Chlorella pyrenoidosa II. Reduction kinetics and electron field increase in the 10 ms range. Biochim Biophys Acta 462: 371–379
Bouges-Bocquet B. (1981) Factor regulating the slow electrogenic phase in green algae and higher plants. Biochim Biophys Acta 635: 327–340
Chow W.S. and Hope A.B. (1977) Proton translocation, electron transport and photophosphorylation in isolated chloroplasts. Aust J Plant Physiol 4: 647–665
Chow W.S. and Hope A.B. (1987) The stoichiometries of supramolecular complexes in thylakoid membranes from spinach chloroplasts. Aust J Plant Physiol 14: 21–28
Chow W.S., Hope A.B. and Anderson J.M. (1989) Oxygen per flash from leaf disks quantifies Photosystem II. Biochim Biophys Acta 973: 105–108
Cox R.P. and Andersson B. (1981) Lateral and transverse organization of cytochromes in the chloroplast thylakoid membrane. Biochim Biophys Res Commun 103: 1326–1342
Cox R.P. and Olsen L.F. (1982) The organization of the electron-transport chain in the thylakoid membrane. In: (J Barber, ed) Electron Transport and Photophosphorylation, Elsevier Biomedical Press, Amsterdam, pp 49–79
Cramer W.A., Black M.T., Widger W.R. and Girvin M.E. (1987) Structure and function of photosynthetic cytochrome b-cl and b6-f complexes.In: (J Barber, ed) Topics in Photosynthesis, Vol 8, The Light Reactions, Elsevier Science Press, Amsterdam, pp 447–493
Crofts A.R., Meinhardt S.W., Jones K.R. and Snozzi M. (1983) The role of the quinone pool in the cyclic electron-transfer chain of Rhodopseudomonas sphaeroides. A modified Q-cycle mechanism. Biochim Biophys Acta 723: 202–218
Davenport J.W. and McCarty R.E. (1981) Quantitative aspects of adenosine triphosphate-driven proton translocation in spinach chloroplasts thylakoid. J Biol Chem 256: 8947–8954
Dilley R.A. (1970) The effect of various energy-conversion states of chloroplasts on proton and electron transport. Arch Biochem Biophys 137: 270–283
Dilley R.A., Theg S.M. and Beard W.A. (1987) Membrane-proton interactions in chloroplast bioenergetics: Localized proton domains. Annu Rev Plant Physiol 38: 347–389
Dolan E. and Hind G. (1974) Kinetics of the reduction and oxidation of cytochromes b and f in isolated chloroplasts. Biochim Biophys Acta 357: 380–385
Fowler C.F. and Kok B. (1976) Detertnination of H + Ie-ratios in chloroplasts with flashing light. Biochim Biophys Acta 423: 510–523
Forster V., Hong Yu-Qun and Junge W. (1981) Electron transfer and proton pumping under excitation of dark-adapted chloroplasts with flashing light. Biochim Biophys Acta 638: 141–152
Furbacher P.N., Girvin M.E. and Cramer W.A. (1989) On the question of inter-heme electron transfer in the chloroplast cytochrome b6 in situ. Biochemistry 28: 8990–8998
Furbank R.T. and Badger M.R. (1983) Oxygen exchange associated with electron transport and photophosphorylation in spinach thylakoids. Biochim Biophys Acta 723: 400–409
Graan T. and Ort D.R. (1983) Initial events in the regulation of electron transfer in chloroplasts. J Biol Chem 258: 2831–2836
Graan T. and Ort D.R. (1986) Detection of oxygen-evolving photosystem II centers inactive in plastoquinone reduction. Biochim Biophys Acta 852: 320–330
Graber P. and Witt H.T. (1975) Direct measurement of the protons purnped into the inner phase of the functional membrane of photosynthesis per electron transfer. FEBS Lett 59: 184–189
Hangarter R.P. Jones R.W. Ort D.R. and Whitmarsh J. (1987) Stoichiometries and energetics of proton translocation coupled to electron transport in chloroplasts. Biochim Biophys Acta 890: 106–115
Hauska G. Hurt E. Gabellini N. and Lockau W. (1983) Comparative aspects of quinol-cytochrome c/plastocyanin oxidoreductases. Biochim Biophys Acta 726: 95–133
Hope A.B. Birch S. and Matthews D.B. (1987) Further studies of proton translocation in chloroplasts after single-turnover flashes. IV Effects of cytochrome b6 If complex inhibitors on proton uptake and cytochrome b6 turnover. Aust J Plant Physiol 14: 47–57
Hope A.B. Handley L. and Matthews D.B. (1985) Further studies of proton translocation in chloroplasts after single-turnover flashes. III. Conditions for the operation of an apparent Q-cycle in thylakoids. Aust J Plant Physiol 12: 387–394
Hope A.B. and Matthews D.B. (1983) Further studies of proton translocation in chloroplasts after singleturnover flashes. I. Proton uptake. Aust J Plant Physiol 10: 363–372
Hope A.B. and Matthews D.B. (1984) Further studies of proton translocation in chloroplasts after singleturnover flashes II. Proton deposition. Aust J Plant Physiol 11: 267–276
Hope A.B. and Matthews D.B. (1987) The slow phase of the electrochromic shift in relation to the Q-cycle in thylakoids Aust J Plant Physiol 14: 29–46
Hope A.B. and Morland A. (1979) Proton translocation in isolated spinach chloroplasts after single-turnover actinic flashes. Aust J Plant Physiol 6: 289–304
Hope A.B. and Rich P.R. (1989) Proton uptake by the chloroplast cytochrome of complex. Biochim Biophys Acta 975: 96–103
Horton P. and Cramer W.A. (1974) The accessibility of the chloroplast cytochrornesfand b-559 to ferricyanide. Biochim Biophys Acta 368: 348–360
Houchins J.P. and Hind G. (1983) Kinetic evidence for involvement of two cytochrome b-563 hemes in photosynthetic electron transport. Biochim Biophys Acta 725: 138–145
Hurt E.C. Hauska G. and Shahak Y. (1982) Electrogenic proton translocation by the chloroplast cytochrome b6 if complex reconstituted into phospholipid vesicles. FEBS Lett 149: 211–216
Ivanov B.N. (1988) The effect of valinomycin on proton transport in chloroplast thylakoid membranes. Biologicheskiye Membrani (USSR) 5: 628–634
Ivanov B.N. and Akulova E.A. (1976) The effect of ATP and of phosphorylation conditions on the H+/eratio and proton transport is isolated chloroplast. Dokladi Akad Nauk USSR 277: 999–1002
Ivanov B.N. and Muzafarov E.N. (1974) Determination of link between proton uptake and electron transport in isolated chloroplasts. In: (EA Akulova. ed) Methodi Issled. Fotosint Transporta Electrona. Akad Nauk USSR, Pushchino. pp 69–83
Ivanov B.N. and Ovchinnikova V.I. (1984) Changes of stoichiometry of proton-electron coupling in photosynthetic electron transport chain. Biofyzika USSR 29: 770–774
Ivanov B.N. Ovchinnikova V.I. and Shmeleva V.L. (1983) The effects of Valinomycin and dicyclohexylcarbodiimide on measured stoichiometry of coupling between proton and electron trasnports in chloroplasts. Biokhimiya USSR 48: 1954–1964
Inanov B.N. Povalyaeva T.V. and Akulova E.A. (198Oa) The H+/e- ratio in isolated chloroplasts. I. The effects of media pH and of acceptor on value of the H+/e- ratio during electron transfer from water to ferricyanide and methylviologen. Bioftzika USSR 1980: 183–184
Ivanov B.N. Povalyaeva T.V. and Akulova E.A. (198Ob) The H+/e- ratio in isolated chloroplasts. II The effect of valinomycin and gramicidin on value of the H+/e- ratio. Biojizikil (USSR) 1980: 184–185
Ivanov B.N. Shmeleva V.L. Muzafarov E.N. and Akulova E.A. (1974) The P/2e and H+/e- ratios in chloroplasts of plants grown at different light intensities. Dokladi Akad Nauk USSR 217: 971–974
Ivanov B.N. Shtneleva V.L. and Ovchinnikova V.I. (1985) Stoichiometry of proton uptake in isolated pea chloroplasts under different light intensities. J Bioenerg Biomembr 17: 239–249
Izawa S. and Hind G. (1967) The kinetics of the pH rise in illuminated chloroplasts suspensions. Biochim Biophys Acta 143: 377–390
Jagendorf A.T. and Hind G. (1963) Studies on the mechanism of photophosphorylation. In: Photosynthetic Mechanism of Green Plants, Publ 1145 NAS-NRC, Washington, DC, pp 599–610
Joliot P. and Joliot A. (1984a) Electron transfer between the two photosystems. I Flash excitation under oxidizing conditions. Biochim Biophys Acta 765: 210–218
Joliot P. and Joliot A. (1984b) Electron transfer between the two photosystems. II Equilibrium constants. Biochim Biophys Acta 765: 219–226
Jones R.W. and Whitmarsh J. (1985) Origin of the electrogenic reaction in the chloroplast cytochrome b/f complex. Photobiochem Photobiophys 9: 119–127
Junge W. and Auslander W. (1974) The electric generation in photosynthesis of green plants. I Vectorial and protolytic properties of the electron transport chain. Biochim Biophys Acta 333: 59–70
Jursinic P.A. and Denneberg R.J. (1988) Enhanced oxygen yields caused by double turnovers of Photosystems II induced by dichlorobenzoquinone. Biochim Biophys Acta 934: 177–185
Karlish S.I.D. and Avron M. (1967) Relevance of proton uptake induced by light to the mechanism of energy coupling in photophosphoryltion. Nature 216: 1107–1109
Karlish S.I.D. and Avron M. (1968) Analysis of light induced proton uptake in isolated chloroplasts. Biochim Biophys Acta 153: 878–888
Karlish S.I.D. and Avron M. (1971) Energy transfer inhibition and ion movements in isolated chloroplasts. Eur J Biochem 20: 51–57
Kok B., Forbush B. and McGloin M.P. (1970) Cooperation of charges in photosynthetic O2 evolution. I A linear four step mechanism. Photochem Photobiol 11: 457–475
McCarty R.E. (1980) Photosynthetic phosphorylation by chloroplasts of higher plants. In: (KC Smith, ed) Photochemical Photobiological Revs. Vol 5, Pergaman Press. New York, pp 1–47
McCauley S.W., Taylor S.E., Dennenberg R.J. and Melis A. (1984) Measurement of the relative electrontransport capacity of photosystem I and photosystem II in spinach chloroplasts. Biochim Biophys Acta 765: 186–195
Mitchell P. (1966) Chemiosmotic coupling in oxidative and photosynthetic phosphorylation. Biol Rev 41: 445–502
Mitchell P. (1975) Protonmotive redox mechanism of the cytochrome b-c( complex in the respiratory chain: protonmotive ubiquinone cycle. FEBS Lett 56: 1–6
Mitchell P. (1976) Possible molecular mechanisms of the protonmotive function of cytochrome systems. J Theor Biol 62: 327–367
Molotkovsky Yu G. and Dzubenko V.S. (1972) Inhibition of photophosphorylation in chloroplasts by valinomycin. Dokladi Akad Nauk SSSR 204: 1272–1275
Moss D.A. and Rich P.R. (1987) The effect of pre-reduction of cytochrome b-563 on the electron-transfer reactions of the cytochrome bf complex in higher plant chloroplasts. Biochim Biophys Acta 894: 189–197
Myatt J.F. and Jackson J.B. (1986) “Backlash” and the coupling between electron transport and proton translocation in bacterial chromatophores. Biochim Biophys Acta 848: 212–223
Neumann J. and Jagendorf A.T. (1964) Light-induced pH changes related to phosphorylation by chloroplasts. Arch Biochim Biophys 107: 109–119
Ort D.R. (1986) Energy transduction in oxygenic photosynthesis: An overview of structure and mechanism. In: (LA Staehelin and CJ Arntzen, eds) Encyclopedia of Plant Physiology, New Series, Vol 19, Photosynthesis 1II, Photosynthetic Membranes and Light Harvesting Systems, Springer-Verlag, Berlin, pp 96–143
Petty K., Jackson J.B. and Dutton P.L. (1979) Factors controlling the binding of two protons per electron transferred through the ubiquinone and cytochrome b/c2 segment of Rhodopseudomonas sphaeroides chrornatophores. Biochim Biophys Acta 546: 17–42
Portis A.R., Magnusson R.P. and McCarty R.E. (1975) Confonnational changes in coupling factor I may control the rate of electron flow in spinach chloroplasts. Biochem Biophys Res Commun 64: 877–884
Rathenow M. and Rumberg B. (1980) Stoichiometry of proton translocation during photosynthesis. Ber Bunsenges Phys Chem 84: 1059–1062
Reeves S.G. and Hall D.O. (1973) The stoichiometry (ATR/2e ratio) of non-cyclic photophoshorylation in isolated spinach chloroplasts. Biochim Biophys Acta 314: 66–78
Rich P.R. (1984) Electron and proton transfers through quinones and cytochrome be complexes. Biochim Biophys Acta 768: 53–79
Rich P.R. (1988) A critical examination of the supposed variable proton stoichiometry of the chloroplast cytochrome bf complex. Biochim Biophys Acta 932: 33–42
Rich P.R., Heathcote P. and Moss D.A. (1987) Kinetic studies of electron transfer in a hybrid system constructed from the cytochrome bJ-complex and Photosystem I. Biochim Biophys Acta 892: 138–151
Robertson D.E. and Dutton P.L. (1988) The nature and magnitude of the charge-separation reactions of ubiquinol cytochrome oxidoreductase. Biochim Biophys Acta 935: 273–291
Robinson H.H. and Crofts A.R. (1984) Kinetics of proton uptake and oxidation-reduction reactions of the quinone acceptor complex of PS II from pea chloroplasts. In: (C Syhesema, ed.) Advanced Photosynthesis Research, Vol 1, Martinus Nijhoff/Dr Junk Publishers, The Hague, pp 477–480
Robinson S.P. and Wiskich I.T. (1976) Factor affecting the ADP/O ratio in isolated chloroplasts. Biochim Biophys Acta 440: 131–146
Saphon S. and Crofts A.R. (1977) The H+/e- ratio in chloroplasts is 2. Possible errors in its determination. Z Naturforsch 32b: 810–816
Schliephake W., Junge W. and Witt H.T. (1968) Correlation between field formation, proton translocation, and the light reactions in phOtosynthesis. Z Naturforsch 23b: 1571–1578
Schroder H., Muhle H. and Rumberg B. (1972) Relationship between ion transport phenomena and phosphorylation in chloroplasts. In: (0 Forty, M Avron and A Melandri, eds.) Proc 2nd Intern Congr Photosynth Res, Dr W. Jung, NV The Hague, pp 919–930
Schubert K., Liese F. and Rumberg B. (1990) Analysis of the variability of the H+/e stoichiometry in spinach chloroplasts. In: (M Baltsheffsy, ed) Current Research in Photosynthesis, Vol 3, Kluwer Acad Publ, Dordrecht, The Netherlands, pp 279–282
Schwartz M. (1968) Light induced proton gradient links electron transport and phosphorylation. Nature 219: 915–919
Schwartz M. (1971) The relation of ion transport to phosphorylation. Annu Rev Plant Physiol 22: 469–487
Shmeleva V.L., Ivanov B.N. and Bityukova L.V. (1979) Light-dependent oxygen consumption by isolated pea chloroplasts during NADP+ photoreduction. Biokhimiya (USSR) 44: 911–916
Slovacek R.E., Crowther D. and Hind O. (1980) Relative activities of linear and cyclic electron flows during chloroplasts COrfixation. Biochim Biophys Acta 592: 496–505
Strotmann H. and Lohse D. (1988) Determination of the H+/ ATP ratio of the H+ transport-coupled reversible chloroplast ATPase reaction by equilibrium studies. FEBS Lett 229: 308–312
Van Kooten O., Gloudemans A.G.M. and Vredenberg W.J. (1983) On the slow component of P-515 and the flash-induced reduction of cytochrome b-563 in chloroplast membranes. Photobiochem Photobiophys 6: 9–14
Velthuys B.R. (1978) A third site of proton translocation in green plant photosynthetic electron transport. Proc Natl Acad Sci USA 75: 6031–6032
Velthuys B.R. (1979) Electron flow through plastoquinone and cytochrome b6 and f in chloroplasts. Proc Natl Acad Sci USA 76: 2765–2769
Velthuys B.R. (1980) Electron and proton transfer events in chloroplasts during a short series of flashes. FEBS Lett 115: 167–170
Wikstrom M. and Krab K. (1980) Respiration-linked H+ translocation in mitochondria: Stoichiometry and mechanisms. Curr Top Bioenerg 10: 51–101
Wikstrom M. and Krab (1986) The semiquinone cycle. A hypothesis of electron transfer and proton translocation in cytochrome bc-type complexes. J Bioenerg Biomembr 18: 181–193
Willms I., Malkin R. and Chain R.K. (1987) Oxidation-reduction reactions of cytochrome b6 in a liposomeincorporated cytochrome b6-f complex. Arch Biochem Biophys 258: 248–258
Willms I., Malkin R. and Chain R.K. (1988) Quinone interaction with the chloroplast cytochrome bd complex. Arch Biochem Biophys 264: 36–44
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1993 Springer Science+Business Media Dordrecht
About this chapter
Cite this chapter
Ivanov, B.N. (1993). Stoichiometry of Proton Uptake by Thylakoids During Electron Transport in Chloroplasts. In: Abrol, Y.P., Mohanty, P., Govindjee (eds) Photosynthesis: Photoreactions to Plant Productivity. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-2708-0_4
Download citation
DOI: https://doi.org/10.1007/978-94-011-2708-0_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-5200-9
Online ISBN: 978-94-011-2708-0
eBook Packages: Springer Book Archive