ArticleProceedings of the National Academy of Sciences of the United States of America2013
Manganese-oxidizing photosynthesis before the rise of cyanobacteria.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.
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51 citing papers in PubMed, 236 citations in OpenAlex.
- Latitudinal manganese gradient dynamics associated with Earth's major ice ages.Nature communications · 2026Article
- Oxygen reductase origin followed the great oxidation event and terminated the Lomagundi excursion.Biochimica et biophysica acta. Bioenergetics · 2026Article
- A window into transition metal availability in early palaeoproterozoic seawater.Scientific reports · 2025Article
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- Iron: Life's primeval transition metal.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Co-evolution of early Earth environments and microbial life.Nature reviews. Microbiology · 2024Review
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- Modeling the Characteristic Residues of ChlorophyllMicroorganisms · 2023Article
- Oxidoreductases and metal cofactors in the functioning of the earth.Essays in biochemistry · 2023Article
- Reconciling discrepant minor sulfur isotope records of the Great Oxidation Event.Nature communications · 2023Article
- Mesoproterozoic surface oxygenation accompanied major sedimentary manganese deposition at 1.4 and 1.1 Ga.Geobiology · 2023Article
- A critical review of mineral-microbe interaction and co-evolution: mechanisms and applications.National science review · 2022Review
- Competitive interaction of Mn(II) and Fe(II) cations with the high-affinity Mn-binding site of the photosystem II: evolutionary aspect.Origins of life and evolution of the biosphere : the journal of the International Society for the Study of the Origin of Life · 2022Article
- Bulk and grain-scale minor sulfur isotope data reveal complexities in the dynamics of Earth's oxygenation.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- Evidence for the oxidation of Earth's crust from the evolution of manganese minerals.Nature communications · 2022Article
- Reexamination of 2.5-Ga "whiff" of oxygen interval points to anoxic ocean before GOE.Science advances · 2022Article
- Microbial roles in cave biogeochemical cycling.Frontiers in microbiology · 2022Review
- Investigating Abiotic and Biotic Mechanisms of Pyrite Reduction.Frontiers in microbiology · 2022Article
- An abiotic source of Archean hydrogen peroxide and oxygen that pre-dates oxygenic photosynthesis.Nature communications · 2021Article
- Time-resolved comparative molecular evolution of oxygenic photosynthesis.Biochimica et biophysica acta. Bioenergetics · 2021Article
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Authors and funding
6 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The emergence of oxygen-producing (oxygenic) photosynthesis fundamentally transformed our planet; however, the processes that led to the evolution of biological water splitting have remained largely unknown. To illuminate this history, we examined the behavior of the ancient Mn cycle using newly obtained scientific drill cores through an early Paleoproterozoic succession (2.415 Ga) preserved in South Africa. These strata contain substantial Mn enrichments (up to ∼17 wt %) well before those associated with the rise of oxygen such as the ∼2.2 Ga Kalahari Mn deposit. Using microscale X-ray spectroscopic techniques coupled to optical and electron microscopy and carbon isotope ratios, we demonstrate that the Mn is hosted exclusively in carbonate mineral phases derived from reduction of Mn oxides during diagenesis of primary sediments. Additional observations of independent proxies for O2--multiple S isotopes (measured by isotope-ratio mass spectrometry and secondary ion mass spectrometry) and redox-sensitive detrital grains--reveal that the original Mn-oxide phases were not produced by reactions with O2, which points to a different high-potential oxidant. These results show that the oxidative branch of the Mn cycle predates the rise of oxygen, and provide strong support for the hypothesis that the water-oxidizing complex of photosystem II evolved from a former transitional photosystem capable of single-electron oxidation reactions of Mn.
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