Influence of elevated temperature on electron flows in chloroplasts of barley
https://doi.org/10.29235/1029-8940-2020-65-2-153-162
Abstract
The efficiency of electron carriers in thylakoid membranes untreated and exposed to heat 7-day-old barley seedlings was evaluated with PAM fluorescence. Darkness–light transitional states in chloroplasts after heat exposure are studied. Thermoinduced changes in linear and cyclic electron transport chain of chloroplasts are revealed. The activation of NADPH-dependent electron flux after exposure to elevated temperatures is shown. We assumed that ΔрН of thylakoid membranes employed the regulatory role in the distribution of electron flows and the adaptation of the photosynthetic apparatus to stressful effects.
About the Authors
N. L. Pshybytko
Belarusian State University
Belarus
Belarus
Natallia L. Pshybytko – Ph. D. (Biol.), Leading researcher
4, Nezavisimosti Ave., 220030, Minsk
T. S. Bachyshcha
Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus
Belarus
Belarus
Tatsiana S. Bachyshcha – Junior researcher
27, Akademicheskaya Str., 220072, Minsk
L. F. Kabashnikova
Institute of Biophysics and Cell Engineering of the National Academy of Sciences of Belarus
Belarus
Belarus
Liudmila F. Kabashnikova – Corresponding Member, D. Sc. (Biol.), Assistant Professor, Head of the Laboratory
27, Akademicheskaya Str., 220072, Minsk
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