ArticleBiochemistry2009
Photosynthetic oxygen evolution is not reversed at high oxygen pressures: mechanistic consequences for the water-oxidizing complex.
Article in Biochemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed, 44 citations in OpenAlex.
- The Low Oxidation State Paradigm is More Consistent with XFEL Observations of the S₃ → [S₄] → S₀ Transition in Photosystem II.Chemistry (Weinheim an der Bergstrasse, Germany) · 2025Article
- Insights into PSII's SThe journal of physical chemistry letters · 2024Article
- Solar energy conversion by photosystem II: principles and structures.Photosynthesis research · 2023Review
- Symbiosis extended: exchange of photosynthetic OPhotosynthesis research · 2020Article
- Studying the oxidation of water to molecular oxygen in photosynthetic and artificial systems by time-resolved membrane-inlet mass spectrometry.Frontiers in plant science · 2013Review
- Natural variants of photosystem II subunit D1 tune photochemical fitness to solar intensity.The Journal of biological chemistry · 2013Article
- Ecophysiology of photosynthesis in macroalgae.Photosynthesis research · 2012Review
- Thermodynamic limitations of photosynthetic water oxidation at high proton concentrations.The Journal of biological chemistry · 2011Article
- Synechococcus sp. strain PCC 7002 nifJ mutant lacking pyruvate:ferredoxin oxidoreductase.Applied and environmental microbiology · 2011Article
- Membrane-inlet mass spectrometry reveals a high driving force for oxygen production by photosystem II.Proceedings of the National Academy of Sciences of the United States of America · 2011Article
- Adventures with cyanobacteria: a personal perspective.Frontiers in plant science · 2011Article
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
We investigated the effects of elevated O(2) pressure on the production of O(2) by photosynthetic organisms in several species of plants, algae, and a cyanobacterium. Using a noninvasive fluorometry technique to monitor sequential turnover of the photosystem II (PSII) reaction center as a function of O(2) pressures, we showed that none of the reactions of water oxidation are affected by elevated O(2) pressures up to 50-fold greater than atmospheric conditions. Thus, the terminal step of O(2) release from the water oxidation complex (S(4) --> S(0) + O(2) + nH(+)) is not reversible in whole cells, leaves, or isolated thylakoid membranes containing PSII, in contrast to reports using detergent-extracted PSII complexes. This implies that there is no thermodynamically accessible intermediate that can be populated by preventing or reversing the O(2) release step with O(2) at atmospheric pressure. To assess the sensitivity of PSII charge recombination to O(2) pressure, we quantitatively modeled the consequences of two putative perturbations to the catalytic cycle of water oxidation within the framework of the Kok model. On the basis of the breadth of oxygenic phototrophs examined in this study, we conclude that O(2) accumulation in cells or the atmosphere does not suppress photosynthetic productivity through the reversal of water oxidation in contemporary phototrophs and would have been unlikely to influence the evolution of oxygenic photosynthesis.
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Registered trials
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