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

F. Lajkó, A. Kadioglu, G. Garab

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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°C-48°C) samples could largely be accounted for by decline in the activity of superoxide dismutase.

Original languageEnglish
Pages (from-to)696-700
Number of pages5
JournalBiochemical and biophysical research communications
Volume174
Issue number2
DOIs
Publication statusPublished - Jan 31 1991

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ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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