Energy flux couples sulfur isotope fractionation to proteomic and metabolite profiles inDesulfovibrio vulgaris DOI Creative Commons
William D. Leavitt, Jacob Waldbauer, Sofia S. Venceslau

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 27, 2023

Microbial sulfate reduction is central to the global carbon cycle and redox evolution of Earths surface. Tracking activity reducing microorganisms over space time relies on a nuanced understanding stable sulfur isotope fractionation in context biochemical machinery metabolism. Here we link magnitude isotopic proteomic metabolite profiles under different cellular energetic regimes. When energy availability limited, cell specific respiration rates net inversely co-vary. Beyond S values, also quantified shifts protein expression, abundances composition intracellular metabolites, lipid structures lipid/water H values. These coupled approaches reveal which shift directly as function flux, those that vary minimally, may independent flux likely do not contribute S-isotope fractionation. By coupling bulk observations with quantitative proteomics, provide novel constraints for metabolic models. Together, these results lay foundation more predictive models, alongside interpretations environmental reducer lipid-H data.

Language: Английский

Reduced contribution of sulfur to the mass extinction associated with the Chicxulub impact event DOI Creative Commons
Katerina Rodiouchkina, Steven Goderis, Cem Berk Senel

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 16, 2025

The Chicxulub asteroid impact event at the Cretaceous-Paleogene (K-Pg) boundary ~66 Myr ago is widely considered responsible for mass extinction leading to demise of non-avian dinosaurs. Short-term cooling due massive release climate-active agents hypothesized have been crucial, with S-bearing gases originating from target rock vaporization an important driving force. Yet, magnitude S remains poorly constrained. Here we empirically estimate amount impact-released relying on concentration and its isotopic composition within structure a set terrestrial K-Pg ejecta sites. average value 67 ± 39 Gt obtained ~5-fold lower than previous numerical estimates. S-released may indicate less prominent role emission milder winter key implications species survival during first years following impact.

Language: Английский

Citations

1
Bones and teeth isotopes as archives for palaeoclimatic, palaeoenvironmental and palaeoecological data DOI Creative Commons
Rhiannon E. Stevens, Sarah Pederzani, Kate Britton

et al.

Quaternary Science Reviews, Journal Year: 2025, Volume and Issue: 357, P. 109320 - 109320

Published: April 5, 2025

Language: Английский

Citations

1
Speciation and Possible Origins of Organosulfur Compounds in Rice Paddy Soils Affected by Acid Mine Drainage DOI

Meihui Ren,

Qinglin Zhuang,

Xiaoshuang He

et al.

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: 58(17), P. 7357 - 7366

Published: April 3, 2024

Although sulfur cycling in acid mine drainage (AMD)-contaminated rice paddy soils is critical to understanding and mitigating the environmental consequences of AMD, potential sources transformations organosulfur compounds such are poorly understood. We used K-edge X-ray absorption near edge structure (XANES) spectroscopy quantify from five AMD-contaminated sites one AMD-uncontaminated reference site Dabaoshan sulfide mining area South China. also determined stable isotope compositions water-soluble sulfate (δ34SWS), adsorbed (δ34SAS), fulvic (δ34SFAS), humic (δ34SHAS) these samples. Organosulfate was dominant functional group (HAS) both (46%) (42%). Thiol/organic monosulfide contributed a significantly lower proportion HAS (8%) compared that (21%). Within contaminated soils, concentration thiol/organic positively correlated with cation exchange capacity (CEC), moisture content (MC), total Fe (TFe). δ34SFAS ranged −6.3 2.7‰, similar δ34SWS (−6.9 8.9‰), indicating (FAS) mainly derived biogenic S-bearing organic produced by assimilatory reduction. δ34SHAS (−11.0 −1.6‰) were more negative δ34SWS, dissimilatory reduction abiotic sulfurization matter main processes formation HAS.

Language: Английский

Citations

6
Bacterial Sulfate Reduction Facilitates Iodine Mobilization in the Deep Confined Aquifer of the North China Plain DOI
Zhou Jiang,

Li Qian,

Mengjie Cui

et al.

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(40), P. 15277 - 15287

Published: Sept. 26, 2023

Bacterial sulfate reduction plays a crucial role in the mobilization of toxic substances aquifers. However, bacterial on iodine geogenic high-iodine groundwater systems has been unexplored. In this study, enrichment δ34SSO4 (15.56 to 69.31‰) and its significantly positive correlation with iodide total concentrations deep samples North China Plain suggested that participates iodine. Similar correlations were further observed between relative abundance dsrB gene by qPCR, as well composition sulfate-reducing bacteria (SRB) predicted from 16S rRNA high-throughput sequencing data. Subsequent batch culture experiments SRB Desulfovibrio sp. B304 demonstrated could facilitate through enzyme-driven biotic sulfide-driven abiotic iodate iodide. addition, dehalogenation organoiodine compounds reductive dissolution iodine-bearing iron minerals biogenic sulfide liberate bound or adsorbed into groundwater. The revealed study provides new insights our understanding iodine-rich aquifers worldwide.

Language: Английский

Citations

13
Elevated Atmospheric Sulfur Deposition Affects Predominant Forms of Sulfur in Ombrotrophic Peatlands DOI Creative Commons
Hongyan Wang, Zhi‐Guo Yu, Tanja Broder

et al.

Journal of Geophysical Research Biogeosciences, Journal Year: 2025, Volume and Issue: 130(2)

Published: Feb. 1, 2025

Abstract Long‐term transformations of sulfur from atmospheric deposition in ombrotrophic peatlands have rarely been studied, although the potential impact on carbon mineralization and particularly methane formation is acknowledged. To elucidate long‐term fate peat, we therefore applied K‐edge X‐ray absorption near‐edge structure (XANES) spectroscopy to investigate with either natural or anthropogenic deposition. A peatland central Europe (Germany, BBM) experienced high during Industrial Revolution, an oceanic (Chilean Patagonia, PBr) continuously exposed aerosols sea spray, were investigated. During early phases site BBM, when was constantly low, wet‐chemical extractions indicated that 98% ± 0.7% present as organic sulfur. The S XANES fitting suggested redox mainly occurred near water table, at which reduced forms (primarily sulfides, thiols) increased ∼40% stabilized 65% 4% anoxic peat. An contribution observed polluted section BBM entire peat profile PBr. While increases inorganic (TRIS) likely depended available Fe, rises ratio total both sites pronounced. This increase resulted abiotic sulphurization after sulfate reduction. Our study highlights elevated peatlands, being transformed into

Language: Английский

Citations

0
Microscale iron and sulphur isotopic compositions reveal pyritization pathways during early diagenesis DOI Creative Commons
Virgil Pasquier, Johanna Marin‐Carbonne,

Thomas Giunta

et al.

Communications Earth & Environment, Journal Year: 2025, Volume and Issue: 6(1)

Published: March 30, 2025

Language: Английский

Citations

0
Biomass thermal decomposition induced hydrogen sulfide blooming in thermal recovery reservoirs DOI Creative Commons
Yanan Zhu, Yun Wan,

Tian Yan

et al.

Petroleum Science, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Enhancement of nitrogen removal in constructed wetlands through boron mud and elemental sulfur addition: Regulation of sulfur and oxygen cycling DOI

Chenpeng Fang,

Huaqing Liu, Xinhan Chen

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 497, P. 154544 - 154544

Published: Aug. 3, 2024

Language: Английский

Citations

3
Modelling sulfate concentrations in the global ocean through Phanerozoic time DOI Creative Commons
Alexander J. Krause, Graham Shields, Robert J. Newton

et al.

Journal of the Geological Society, Journal Year: 2024, Volume and Issue: 181(4)

Published: April 8, 2024

Understanding the long-term variations in seawater sulfate concentrations ([SO 4 2− ] sw ) is crucial to our understanding of dynamic relationships between sulfur, carbon, calcium and oxygen cycles, their influence on habitability Earth. Here, we explore how [SO has changed throughout Phanerozoic its impact other elemental cycles. We do this by utilizing biogeochemical box model GEOCARBSULFOR. The suggests that increased Paleozoic, decreased during Mesozoic then once more Cenozoic, generally matching geochemical proxies. Atmospheric mirrors changes Paleozoic Mesozoic, but, intriguingly, decouples Cenozoic. further explored controls modifying modelled gypsum fluxes via incorporation evaporite data from geological record. found forcing burial with observed deposition causes better match proxy records at some times, but worsens predictions others. also investigated reliance a prescribed record marine concentrations, finding it dominant control removing seriously degrades predictions. conclude no can yet simulate reasonable evolution both sulfur Supplementary material: Figures S1–S5 are available https://doi.org/10.6084/m9.figshare.c.7164928 Thematic collection: This article part Sulfur Earth system collection at: https://www.lyellcollection.org/topic/collections/sulfur-in-the-earth-system

Language: Английский

Citations

2
Acidophilic sulphate‐reducing bacteria: Diversity, ecophysiology, and applications DOI Creative Commons
Luis Felipe Valdez‐Nuñez, Andreas Kappler, Diana E. Ayala

et al.

Environmental Microbiology Reports, Journal Year: 2024, Volume and Issue: 16(5)

Published: Oct. 1, 2024

Acidophilic sulphate-reducing bacteria (aSRB) are widespread anaerobic microorganisms that perform dissimilatory sulphate reduction and have key adaptations to tolerate acidic environments (pH <5.0), such as proton impermeability Donnan potential. This diverse prokaryotic group is of interest from physiological, ecological, applicational viewpoints. In this review, we summarize the interactions between aSRB other microbial guilds, syntrophy, their roles in biogeochemical cycling sulphur, iron, carbon, elements. We discuss biotechnological applications treating acid mine drainage (AMD, pH <3), focusing on ability produce biogenic sulphide precipitate metals, particularly context utilizing consortia instead pure isolates. Metal nanoparticles recovered after AMD treatment multiple potential technological uses, including electronics biomedicine, contributing a cost-effective circular economy. The products metabolisms, biominerals isotopes, could also serve biosignatures understand ancient extant life universe. Overall, active components sulphur carbon cycles under conditions, with natural implications for world around us.

Language: Английский

Citations

2