Rate-limiting steps in the dark-to-light transition of Photosystem II (PSII) were discovered by measuring the variable chlorophyll-a fluorescence transients elicited by single-turnover saturating flashes (STSFs). It was shown that in diuron-treated samples: (i) the first STSF, despite fully reducing the QA quinone acceptor molecule, generated only an F1(

Faculty of Science University of Ostrava 710 00 Ostrava Czech Republic

Institute of Plant Biology Biological Research Centre 6726 Szeged Hungary

Photosynthesis Research Center Key Laboratory of Photobiology Institute of Botany Chinese Academy of Sciences Beijing 100093 China

Research Institute for Interdisciplinary Science and Graduate School of Natural Science and Technology Okayama University Okayama 700 8530 Japan

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Revisiting the nonregulatory, constitutive nonphotochemical quenching of the absorbed light energy in oxygenic photosynthetic organisms

Effects of lipids on the rate-limiting steps in the dark-to-light transition of Photosystem II core complex of Thermostichus vulcanus

Editorial

In appreciation of an ingenious scientist and a great friend: Győző Garab