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  • Title: The origin of photosystem-I-mediated electron transport stimulation in heat-stressed chloroplasts.
    Author: Thomas PG, Quinn PJ, Williams WP.
    Journal: Planta; 1986 Jan; 167(1):133-9. PubMed ID: 24241743.
    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/b 6 complex of the electron-transport chain linking the two photosystems.
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