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. 1991 Jan 31;174(2):696-700.
doi: 10.1016/0006-291x(91)91473-p.

Involvement of superoxide dismutase in heat-induced stimulation of photosystem I-mediated oxygen uptake

F Lajkó  1 , A Kadioglu, G Garab
Affiliations

Involvement of superoxide dismutase in heat-induced stimulation of photosystem I-mediated oxygen uptake

F Lajkó et al. Biochem Biophys Res Commun. .

Abstract

We have investigated the effect of heat-treatment of chloroplast thylakoid membranes on photosystem I-mediated electron transport. Spectroscopic techniques, oxidation of dichlorophenolindophenol (donor side) and reduction of NADP or methyl purple (acceptor side), showed no indication of an increased activity of photosystem I electron transport. Enhancement of oxygen uptake in the heat-treated (40 degrees C-48 degrees C) samples could largely be accounted for by decline in the activity of superoxide dismutase.

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