ISSN:
1432-2048
Keywords:
Chloroplast (electron transport)
;
Heat stress
;
Membrane organisation
;
Pisum (electron transport and heat stress)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00446380
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