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.
|Number of pages||5|
|Journal||Biochemical and biophysical research communications|
|Publication status||Published - jan. 31 1991|
ASJC Scopus subject areas
- Molecular Biology
- Cell Biology