Gernot Renger

TL;DR: A detailed assessment of the chemistry of Mn oxides by considering how their bulk and nanoscale properties contribute to their effectiveness as water-oxidizing catalysts and the issue of Mn complexes decomposing to Mn oxide is provided.

TL;DR: In this article, the influence of UV-B irradiation on photosystem II activities was investigated using isolated photoystem II membrane fragments from spinach, and it was found that the average amount of DCIP reduced per flash declined drastically with increasing irradiation time in the absence of DPC but remained almost unaffected in its presence.

TL;DR: Reaction schemes elucidating formation, decay and signaling of ROS in cyanobacteria as well as from chloroplasts to the nuclear genome in eukaryotes during exposure of oxygen-evolving photosynthetic organisms to oxidative stress are discussed that target the rapidly growing field of regulatory effects of ROS on nuclear gene expression.

TL;DR: In this paper, the authors used thoroughly dark-adapted thylakoids and an unmodulated Joliot-type oxygen electrode to study the ESR signal II and showed that at high flash frequency (4 Hz), the oxygen yield at the fourth flash (Y4) is lower compared to Y3 than at lower flash frequency.

TL;DR: In this paper, the authors showed that the reaction centers of photosystem II are transformed into dissipative sinks for excitation energy by action of UV-B radiation in chloroplast samples.