ArticleJournal of bioenergetics and biomembranes2013
Formation of superoxide anion and carbon-centered radicals by photosystem II under high light and heat stress-EPR spin-trapping study.
Article in Journal of bioenergetics and biomembranes, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed, 11 citations in OpenAlex.
- Benefits of Vitamin D Supplementation on Pregnancy of Rats with Pregestational Diabetes and Their Offspring.Reproductive sciences (Thousand Oaks, Calif.) · 2023Article
- LC-ESI-MS/MS Analysis of Sulfolipids and Galactolipids in Green and Red Lettuce (International journal of molecular sciences · 2023Article
- A Different Pattern of Production and Scavenging of Reactive Oxygen Species in Halophytic Eutrema salsugineum (Thellungiella salsuginea) Plants in Comparison to Arabidopsis thaliana and Its Relation to Salt Stress Signaling.Frontiers in plant science · 2016Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
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Abstract
In this study, electron paramagnetic resonance spin-trapping spectroscopy was used to study the light-induced production of superoxide anion (O2 (•-)) and carbon-centered (R(•)) radicals by Photosystem II (PSII). It is evidenced here that exposure of PSII membranes to high light (2,000 μmol photons m(-2) s(-1)) or heat (47 °C) treatments prior to the illumination suppressed O2 (•-) production, while R(•) was formed. Formation of R(•) in the both high light- and heat-treated PSII membranes was enhanced by DCMU. Removal of molecular oxygen by glucose/glucose oxidase/catalase system and O2 (•-) scavenging by exogenous superoxide dismutase completely suppressed carbon-centered radical formation. It is proposed here that the oxidation of polyunsaturated fatty acids and amino acids by O2 (•-) on the electron acceptor side of PSII results in the formation of R(•), known to initiate a cascade reaction leading to the lipid peroxidation and protein degradation, respectively.
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