Search Results - "Boiteau, Rene M"
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Soil Organic Matter Characterization by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FTICR MS): A Critical Review of Sample Preparation, Analysis, and Data Interpretation
Published in Environmental science & technology (20-07-2021)“…The biogeochemical cycling of soil organic matter (SOM) plays a central role in regulating soil health, water quality, carbon storage, and greenhouse gas…”
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Siderophore-based microbial adaptations to iron scarcity across the eastern Pacific Ocean
Published in Proceedings of the National Academy of Sciences - PNAS (13-12-2016)“…Nearly all iron dissolved in the ocean is complexed by strong organic ligands of unknown composition. The effect of ligand composition on microbial iron…”
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Quantitative Separation of Unknown Organic–Metal Complexes by Liquid Chromatography–Inductively Coupled Plasma-Mass Spectrometry
Published in Analytical chemistry (Washington) (23-05-2023)“…Dissolved organic matter (DOM) is widely recognized to control the solubility and reactivity of trace metals in the environment. However, the mechanisms that…”
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4
Dynamic mercury methylation and demethylation in oligotrophic marine water
Published in Biogeosciences (02-11-2018)“…Mercury bioaccumulation in open-ocean food webs depends on the net rate of inorganic mercury conversion to monomethylmercury in the water column. We measured…”
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Detection of Iron Ligands in Seawater and Marine Cyanobacteria Cultures by High-Performance Liquid Chromatography–Inductively Coupled Plasma-Mass Spectrometry
Published in Analytical chemistry (Washington) (07-05-2013)“…Organic ligands dominate the speciation of iron in the ocean. Little is known, however, about the chemical composition and distribution of these compounds…”
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Distinct Siderophores Contribute to Iron Cycling in the Mesopelagic at Station ALOHA
Published in Frontiers in Marine Science (01-03-2018)“…The distribution of dissolved iron (Fe), total organic Fe-binding ligands, and siderophores were measured between the surface and 400 m at Station ALOHA, a…”
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Structural Characterization of Natural Nickel and Copper Binding Ligands along the US GEOTRACES Eastern Pacific Zonal Transect
Published in Frontiers in Marine Science (30-11-2016)“…Organic ligands form strong complexes with many trace elements in seawater. Various metals can compete for the same ligand chelation sites, and the final…”
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Structure Elucidation of Unknown Metabolites in Metabolomics by Combined NMR and MS/MS Prediction
Published in Metabolites (17-01-2018)“…We introduce a cheminformatics approach that combines highly selective and orthogonal structure elucidation parameters; accurate mass, MS/MS (MS²), and NMR…”
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Single-colony MALDI mass spectrometry imaging reveals spatial differences in metabolite abundance between natural and cultured Trichodesmium morphotypes
Published in mSystems (24-09-2024)“…, a globally significant N -fixing marine cyanobacterium, forms extensive surface blooms in nutrient-poor ocean regions. These blooms consist of a dynamic…”
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Taxonomic distribution of metabolic functions in bacteria associated with Trichodesmium consortia
Published in mSystems (21-12-2023)“…Colonies of the cyanobacteria act as a biological hotspot for the usage and recycling of key resources such as C, N, P, and Fe within an otherwise oligotrophic…”
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Element-Selective Targeting of Nutrient Metabolites in Environmental Samples by Inductively Coupled Plasma Mass Spectrometry and Electrospray Ionization Mass Spectrometry
Published in Frontiers in Marine Science (13-05-2021)“…Metabolites that incorporate elements other than carbon, nitrogen, hydrogen and oxygen can be selectively detected by inductively coupled mass spectrometry…”
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Slow Kinetics of Iron Binding to Marine Ligands in Seawater Measured by Isotope Exchange Liquid Chromatography-Inductively Coupled Plasma Mass Spectrometry
Published in Environmental science & technology (15-03-2022)“…Current understanding of dissolved iron (Fe) speciation in the ocean is based on two fundamentally different approaches: electrochemical methods that measure…”
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Metal Organic Complexation in Seawater: Historical Background and Future Directions
Published in Annual review of marine science (17-01-2024)“…The speciation of most biologically active trace metals in seawater is dominated by complexation by organic ligands. This review traces the history of work in…”
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Natural Abundance Isotope Ratio Measurements of Organic Molecules Using 21 T FTICR MS
Published in Analytical chemistry (Washington) (28-11-2023)“…Subtle variations in stable isotope ratios at natural abundance are challenging to measure but can yield critical insights into biological, physical, and…”
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Differential Exudation Creates Biogeochemically Distinct Microenvironments during Rhizosphere Evolution
Published in Environmental science & technology (22-10-2024)“…Plant roots and associated microbes release a diverse range of functionally distinct exudates into the surrounding rhizosphere with direct impacts on soil…”
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Relating Molecular Properties to the Persistence of Marine Dissolved Organic Matter with Liquid Chromatography–Ultrahigh-Resolution Mass Spectrometry
Published in Environmental science & technology (09-02-2024)“…Marine dissolved organic matter (DOM) contains a complex mixture of small molecules that eludes rapid biological degradation. Spatial and temporal variations…”
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Patterns of iron and siderophore distributions across the California Current System
Published in Limnology and oceanography (01-01-2019)“…Coastal upwelling of nutrients and metals along eastern boundary currents fuels some of the most biologically productive marine ecosystems. Although iron is a…”
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An extended siderophore suite from Synechococcus sp. PCC 7002 revealed by LC-ICPMS-ESIMS
Published in Metallomics (01-05-2015)“…Siderophores are thought to play an important role in iron cycling in the ocean, but relatively few marine siderophores have been identified. Sensitive, high…”
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Quantitative and qualitative comparison of marine dissolved organic nitrogen recovery using solid phase extraction
Published in Limnology and oceanography, methods (01-08-2023)“…Marine dissolved organic carbon and nitrogen (DOC and DON) are major global carbon and nutrient reservoirs, and their characterization relies on extraction…”
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Microbial iron limitation in the ocean’s twilight zone
Published in Nature (London) (26-09-2024)“…Primary production in the sunlit surface ocean is regulated by the supply of key nutrients, primarily nitrate, phosphate and iron (Fe), required by…”
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