The origin of photosystem-I-mediated electron transport stimulation in heat-stressed chloroplasts
- 1 January 1986
- journal article
- research article
- Published by Springer Nature in Planta
- Vol. 167 (1) , 133-139
- https://doi.org/10.1007/bf00446380
Abstract
Exposure of isolated chloroplasts of pea (Pisum sativum L.) to temperatures above 35° C leads to a stimulation of photosystem-I-mediated electron transport from dichlorophenolindophenol to methyl viologen. The threshold temperature for this stimulation coincides closely with that for heat-induced inhibition of photosystem-II activity in such chloroplasts. This coincidence is explained in terms of a rearrangement of the thylakoid membrane resulting in the exposure of a new set of donor sites for dichlorophenolindophenol within the cytochrome f/b6 complex of the electron-transport chain linking the two photosystems.Keywords
This publication has 40 references indexed in Scilit:
- Low pH and phospholipase A2 treatment induce the phase‐separation of non‐bilayer lipids within pea chloroplast membranesFEBS Letters, 1985
- Structural and functional changes associated with heat‐induced phase‐separations of non‐bilayer lipids in chloroplast thylakoid membranesFEBS Letters, 1983
- Photoaffinity labelling of plastoquinone binding sites in chloroplast cytochrome b6/f‐complexFEBS Letters, 1982
- Redox properties of the DBMIB-Rieske iron-sulfur complex in spinach chloroplast membranesFEBS Letters, 1981
- A Cytochrome f/b6 Complex of Five Polypeptides with Plastoquinol‐Plastocyanin‐Oxidoreductase Activity from Spinach ChloroplastsEuropean Journal of Biochemistry, 1981
- Photosynthetic Acclimation to Temperature in the Desert Shrub, Larrea divaricataPlant Physiology, 1978
- Effects of Growth Temperature on the Thermal Stability of the Photosynthetic Apparatus of Atriplex lentiformis (Torr.) Wats.Plant Physiology, 1977
- Sites of heat sensitivity in chloroplasts and differential inactivation of cyclic and noncyclic photophosphorylation by heatingJournal of Thermal Biology, 1976
- Phosphoglycerate as a Hill Oxidant in a Reconstituted Chloroplast SystemPlant Physiology, 1971
- Thermal uncoupling in chloroplastsBiochimica et Biophysica Acta (BBA) - Bioenergetics, 1969