Veröffentlichungen "Obst, Martin"

2024

Metz, Rouven ; Kumar, Naresh ; Schenkeveld, Walter D. C. ; Obst, Martin ; Voegelin, Andreas ; Mangold, Stefan ; Kraemer, Stephan M.:
Effect of Oxidation on Vivianite Dissolution Rates and Mechanism.
In: Environmental Science & Technology. Bd. 58 (2024) Heft 34 . - S. 15321-15332.
ISSN 0013-936X
DOI: https://doi.org/10.1021/acs.est.4c04809

Chauhan, Ankita ; Patzner, Monique S. ; Bhattacharyya, Amrita ; Borch, Thomas ; Fischer, Stefan ; Obst, Martin ; ThomasArrigo, Laurel K. ; Kretzschmar, Ruben ; Mansor, Muammar ; Bryce, Casey ; Kappler, Andreas ; Joshi, Prachi:
Interactions between iron and carbon in permafrost thaw ponds.
In: Science of the Total Environment. Bd. 946 (2024) . - 174321.
ISSN 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2024.174321

Peiffer, Stefan ; Maisch, M. ; Kappler, A. ; Schmidt, C. ; Mansor, M. ; Obst, Martin ; Frei, Sven:
Kinetic constraints for the formation of microniches for microaerophilic Fe(II) oxidation.
In: Geochimica et Cosmochimica Acta. Bd. 364 (2024) . - S. 211-223.
ISSN 0016-7037
DOI: https://doi.org/10.1016/j.gca.2023.11.006

Wieland, Simon ; Ramsperger, Anja ; Groß, Wolfgang ; Lehmann, Moritz ; Witzmann, Thomas ; Caspari, Anja ; Obst, Martin ; Gekle, Stephan ; Auernhammer, Günter K. ; Fery, Andreas ; Laforsch, Christian ; Kress, Holger:
Nominally identical microplastic models differ greatly in their particle-cell interactions.
In: Nature Communications. Bd. 15 (2024) . - 922.
ISSN 2041-1723
DOI: https://doi.org/10.1038/s41467-024-45281-4

Stimmler, Peter ; Obst, Martin ; Lehmann, Johannes ; Stein, Mathias ; Hockmann, Kerstin ; Göckede, Mathias ; Schaller, Jörg:
Reduced CO₂ Release from Arctic Soils Due to CO₂ Binding to Calcium Forming Aragonite.
In: Environmental Science & Technology. Bd. 58 (2024) Heft 40 . - S. 17695-17702.
ISSN 0013-936X
DOI: https://doi.org/10.1021/acs.est.4c07496

Ingino, Pablo ; Eraky, Haytham ; Zhang, Chunyang ; Hitchcock, Adam P. ; Obst, Martin:
Soft X-ray spectromicroscopic proof of a reversible oxidation/reduction of microbial biofilm structures using a novel microfluidic in situ electrochemical device.
In: Scientific Reports. Bd. 14 (2024) . - 24009.
ISSN 2045-2322
DOI: https://doi.org/10.1038/s41598-024-74768-9

2023

Rohrbach, Stephan ; Gkoutselis, Gerasimos ; Hink, Linda ; Weig, Alfons ; Obst, Martin ; Diekmann, Astrid ; Ho, Adrian ; Rambold, Gerhard ; Horn, Marcus A.:
Microplastic polymer properties as deterministic factors driving terrestrial plastisphere microbiome assembly and succession in the field.
In: Environmental Microbiology. Bd. 25 (2023) Heft 12 . - S. 2681-2697.
ISSN 1462-2920
DOI: https://doi.org/10.1111/1462-2920.16234

Zhang, Chunyang ; Eraky, Haytham ; Ingino, Pablo ; Obst, Martin ; Wang, Jian ; Higgins, Drew ; Hitchcock, Adam P.:
In-situ STXM characterization of Cu/Cu₂O electrocatalysts for CO₂ reduction.
In: Chuang, Tzu-Hung ; Lin, Bi-Hsuan ; Shiu, Hung-Wei ; Wei, Der-Hsin (Hrsg.): Proceedings of the 15th International Conference on X-ray Microscopy – XRM2022. - Melville, NY : AIP Publishing , 2023 . - 020011 . - (AIP Conference Proceedings ; 2990 )
ISBN 978-0-7354-4672-4
DOI: https://doi.org/10.1063/5.0168124

Stimmler, Peter ; Obst, Martin ; Stein, Mathias ; Göckede, Mathias ; Hockmann, Kerstin ; Schaller, Joerg:
Silicon and calcium controls on iron and aluminum mobility in Arctic soils.
In: Chemosphere. Bd. 335 (2023) . - 139087.
ISSN 1879-1298
DOI: https://doi.org/10.1016/j.chemosphere.2023.139087

2022

Elagami, Hassan ; Ahmadi, Pouyan ; Fleckenstein, Jan ; Frei, Sven ; Obst, Martin ; Agarwal, Seema ; Gilfedder, Benjamin Silas:
Measurement of microplastic settling velocities and implications for residence times in thermally stratified lakes.
In: Limnology and Oceanography. Bd. 67 (2022) Heft 4 . - S. 934-945.
ISSN 1939-5590
DOI: https://doi.org/10.1002/lno.12046

Pucetaite, Milda ; Hitchcock, Adam ; Obst, Martin ; Persson, Per ; Hammer, Edith C.:
Nanoscale chemical mapping of exometabolites at fungal–mineral interfaces.
In: Geobiology. Bd. 20 (2022) Heft 5 . - S. 650-666.
ISSN 1472-4669
DOI: https://doi.org/10.1111/gbi.12504

Schaller, Jörg ; Wu, Bei ; Amelung, Wulf ; Hu, Zhengyi ; Stein, Mathias ; Lehndorff, Eva ; Obst, Martin:
Silicon as a potential limiting factor for phosphorus availability in paddy soils.
In: Scientific Reports. Bd. 12 (2022) . - 16329.
ISSN 2045-2322
DOI: https://doi.org/10.1038/s41598-022-20805-4

Ingino, Pablo ; Tiew, Kai Hao ; Obst, Martin:
Suitability of lectin binding studies for the characterization of redox-active microbial environmental biofilms.
In: AMB Express. Bd. 12 (2022) . - 140.
ISSN 2191-0855
DOI: https://doi.org/10.1186/s13568-022-01479-7

2021

Peiffer, Stefan ; Kappler, A. ; Haderlein, S. B. ; Schmidt, C. ; Byrne, J. M. ; Kleindienst, S. ; Vogt, C. ; Richnow, H. H. ; Obst, Martin ; Angenent, Largus T. ; Bryce, C. ; McCammon, Catherine ; Planer-Friedrich, Britta:
A biogeochemical–hydrological framework for the role of redox-active compounds in aquatic systems.
In: Nature Geoscience. Bd. 14 (2021) . - S. 264-272.
ISSN 1752-0908
DOI: https://doi.org/10.1038/s41561-021-00742-z

Marouane, Bouchra ; Chen, Ning ; Obst, Martin ; Peiffer, Stefan:
Competing Sorption of Se(IV) and Se(VI) on Schwertmannite.
In: Minerals. Bd. 11 (2021) Heft 7 . - 764.
ISSN 2075-163X
DOI: https://doi.org/10.3390/min11070764

Gkoutselis, Gerasimos ; Rohrbach, Stephan ; Harjes, Janno ; Obst, Martin ; Brachmann, Andreas ; Horn, Marcus A. ; Rambold, Gerhard:
Microplastics accumulate fungal pathogens in terrestrial ecosystems.
In: Scientific Reports. Bd. 11 (2021) . - 13214.
ISSN 2045-2322
DOI: https://doi.org/10.1038/s41598-021-92405-7

2020

Yang, Zhen ; Sun, Tianran ; Subdiaga, Edisson ; Obst, Martin ; Haderlein, Stefan ; Maisch, Markus ; Kretschmar, Ruben ; Angenent, Largus T. ; Kappler, Andreas:
Aggregation-dependent electron transfer via redox-active biochar particles stimulate microbial ferrihydrite reduction.
In: Science of the Total Environment. Bd. 703 (2020) . - 135515.
ISSN 0048-9697
DOI: https://doi.org/10.1016/j.scitotenv.2019.135515

Tomaszewski, Elizabeth J. ; Olson, L. ; Obst, Martin ; Byrne, James M. ; Kappler, Andreas ; Muehe, E. Marie:
Complexation by cysteine and iron mineral adsorption limit cadmium mobility during metabolic activity of Geobacter sulfurreducens.
In: Environmental Science : Processes & Impacts. Bd. 22 (2020) Heft 9 . - S. 1877-1887.
ISSN 2050-7895
DOI: https://doi.org/10.1039/D0EM00244E

Hömberg, Annkathrin ; Obst, Martin ; Knorr, Klaus-Holger ; Kalbitz, Karsten ; Schaller, Jörg:
Increased silicon concentration in fen peat leads to a release of iron and phosphate and changes in the composition of dissolved organic matter.
In: Geoderma. Bd. 374 (2020) . - 114422.
ISSN 0016-7061
DOI: https://doi.org/10.1016/j.geoderma.2020.114422

2019

Picard, Aude ; Gartman, Amy ; Cosmidis, Julie ; Obst, Martin ; Vidoudez, Charles ; Clarke, David R. ; Girguis, Peter R.:
Authigenic metastable iron sulfide minerals preserve microbial organic carbon in anoxic environments.
In: Chemical Geology. Bd. 530 (2019) . - 119343.
ISSN 0009-2541
DOI: https://doi.org/10.1016/j.chemgeo.2019.119343

Schaller, Jörg ; Faucherre, Samuel ; Joss, Hanna ; Obst, Martin ; Göckede, Mathias ; Planer-Friedrich, Britta ; Peiffer, Stefan ; Gilfedder, Benjamin Silas ; Elberling, Bo:
Silicon increases the phosphorus availability of Arctic soils.
In: Scientific Reports. Bd. 9 (2019) . - 449.
ISSN 2045-2322
DOI: https://doi.org/10.1038/s41598-018-37104-6

2018

Prabu, Vinod ; Obst, Martin ; Hosseinkhannazer, Hooman ; Reynolds, Matthew ; Rosendahl, Scott ; Wang, Jian ; Hitchcock, Adam P.:
Instrumentation for in-situ flow electrochemical Scanning Transmission X-ray Microscopy (STXM).
In: Review of Scientific Instruments. Bd. 89 (2018) Heft 6 . - No. 063702.
ISSN 1089-7623
DOI: https://doi.org/10.1063/1.5023288

Obst, Martin ; Ingino, Pablo ; Hitchcock, Adam P. ; Prabu, Vinod ; Picard, Aude:
Redox-Chemistry of Environmental Biofilms Probed on the Submicron Scale by in-situ Electrochemistry Scanning Transmission (soft) X-ray Microscopy.
In: Microscopy and Microanalysis. Bd. 24 (2018) Heft Suppl. 2 . - S. 502-505.
ISSN 1435-8115
DOI: https://doi.org/10.1017/S1431927618014745

2017

Yanez H., Jorge E. ; Wang, Zi ; Lege, Sascha ; Obst, Martin ; Roehler, Sebstian ; Burkhardt, Claus J. ; Zwiener, Christian:
Application and characterization of electroactive membranes based on carbon nanotubes and zerovalent iron nanoparticles.
In: Water Research. Bd. 108 (2017) . - S. 78-85.
ISSN 0043-1354
DOI: https://doi.org/10.1016/j.watres.2016.10.055

Zeitvogel, Fabian ; Burkhardt, Claus J. ; Schroeppel, Birgit ; Schmid, Gregor ; Ingino, Pablo ; Obst, Martin:
Comparison of Preparation Methods of Bacterial Cell-Mineral Aggregates for SEM Imaging and Analysis Using the Model System of Acidovorax sp. BoFeN1.
In: Geomicrobiology Journal. Bd. 34 (2017) Heft 4 . - S. 317-327.
ISSN 1521-0529
DOI: https://doi.org/10.1080/01490451.2016.1189467

Nordhoff, Mark ; Tominski, Claudia ; Halama, Max ; Byrne, James ; Obst, Martin ; Kleindienst, Sara ; Behrens, Sebastian ; Kappler, Andreas:
Insights into Nitrate-Reducing Fe(II) Oxidation Mechanisms through Analysis of Cell-Mineral Associations, Cell Encrustation, and Mineralogy in the Chemolithoautotrophic Enrichment Culture KS.
In: Applied and Environmental Microbiology. Bd. 83 (2017) Heft 13 . - e00752-17.
ISSN 1098-5336
DOI: https://doi.org/10.1128/AEM.00752-17

Swanner, Elizabeth D. ; Bayer, Timm ; Wu, W. ; Hao, L. ; Obst, Martin ; Sundman, A. ; Byrne, James ; Michel, F. Marc ; Kappler, Andreas ; Schönberg, Ronny:
Iron isotope fractionation during Fe(II) oxidation mediated by the oxygen-producing marine cyanobacterium Synechococcus PCC 7002.
In: Environmental Science & Technology. Bd. 51 (2017) Heft 9 . - S. 4897-4906.
ISSN 0013-936X
DOI: https://doi.org/10.1021/acs.est.6b05833

Laufer, Katja ; Nordhoff, Mark ; Halama, Max ; Martinez, Raul E. ; Obst, Martin ; Nowak, Marcus ; Stryhanyuk, Hryhoriy ; Richnow, Hans-Hermann ; Kappler, Andreas:
Microaerophilic Fe(II)-Oxidizing Zetaproteobacteria Isolated from Low-Fe Marine Coastal Sediments : Physiology and Composition of Their Twisted Stalks.
In: Applied and Environmental Microbiology. Bd. 83 (2017) Heft 8 . - e03118-16.
ISSN 1098-5336
DOI: https://doi.org/10.1128/AEM.03118-16

Hagemann, Nikolas ; Joseph, Stephen ; Schmidt, Hans-Peter ; Kammann, Claudia ; Harter, Johannes ; Borch, Thomas ; Young, Robert B. ; Varga, Krisztina ; Taherymoosavi, Sarasadat ; Elliott, K. Wade ; McKenna, Amy ; Albu, Mihaela ; Mayrhofer, Claudia ; Obst, Martin ; Conte, Pellegrino ; Dieguez-Alonso, Alba ; Orsetti, Silvia ; Subdiaga, Edisson ; Behrens, Sebastian ; Kappler, Andreas:
Organic coating on biochar explains its nutrient retention and stimulation of soil fertility.
In: Nature Communications. Bd. 8 (2017) Heft 1 . - No. 1089.
ISSN 2041-1723
DOI: https://doi.org/10.1038/s41467-017-01123-0

Zobi, Fabio ; Obst, Martin:
Two- and Three-dimensional Mid-Infrared Chemical Imaging.
In: Chimia. Bd. 71 (2017) Heft 1 . - S. 32-37.
ISSN 0009-4293
DOI: https://doi.org/10.2533/chimia.2017.32

2016

Schmid, Gregor ; Obst, Martin ; Wu, Juan ; Hitchcock, Adam P.:
3D chemical imaging of nanoscale biological, environmental and synthetic materials by soft X-ray STXM spectro-tomography.
In: Kumar, Challa S. S. R. (Hrsg.): X-ray and neutron techniques for nanomaterials characterization. - Berlin : Springer , 2016 . - S. 43-94
ISBN 978-3-662-48604-7

Hao, Likai ; Guo, Yuan ; Byrne, James M. ; Zeitvogel, Fabian ; Schmid, Gregor ; Ingino, Pablo ; Li, Jianli ; Neu, Thomas R. ; Swanner, Elizabeth D. ; Kappler, Andreas ; Obst, Martin:
Binding of heavy metal ions in aggregates of microbial cells, EPS and biogenic iron minerals measured in-situ using metal- and glycoconjugates-specific fluorophores.
In: Geochimica et Cosmochimica Acta. Bd. 180 (2016) . - S. 66-96.
ISSN 0016-7037
DOI: https://doi.org/10.1016/j.gca.2016.02.016

Gauger, Tina ; Byrne, James M. ; Konhauser, Kurt O. ; Obst, Martin ; Crowe, Sean ; Kappler, Andreas:
Influence of organics and silica on Fe(II) oxidation rates and cell–mineral aggregate formation by the green-sulfur Fe(II)-oxidizing bacterium Chlorobium ferrooxidans KoFox – Implications for Fe(II) oxidation in ancient oceans.
In: Earth and Planetary Science Letters. Bd. 443 (2016) . - S. 81-89.
ISSN 0012-821X
DOI: https://doi.org/10.1016/j.epsl.2016.03.022

She, Mengyao ; Yang, Zheng ; Hao, Likai ; Wang, Zhaohui ; Luo, Tianyou ; Obst, Martin ; Liu, Ping ; Shen, Yehua ; Zhang, Shengyong ; Li, Jianli:
A novel approach to study the structure-property relationships and applications in living systems of modular Cu2+ fluorescent probes.
In: Scientific Reports. Bd. 6 (2016) . - 28972.
ISSN 2045-2322
DOI: https://doi.org/10.1038/srep28972

Jin, Xilang ; Wu, Shaoping ; She, Mengyao ; Jia, Yifan ; Hao, Likai ; Yin, Bing ; Wang, Lanying ; Obst, Martin ; Shen, Yehua ; Zhang, Yongmin ; Li, Jianli:
Novel Fluorescein-Based Fluorescent Probe for Detecting H2S and Its Real Applications in Blood Plasma and Biological Imaging.
In: Analytical Chemistry. Bd. 88 (2016) Heft 22 . - S. 11253-11260.
ISSN 1520-6882
DOI: https://doi.org/10.1021/acs.analchem.6b04087

Grösbacher, Michael ; Spicher, Carolin ; Bayer, Anne ; Obst, Martin ; Karwautz, Clemens ; Pilloni, Giovanni ; Wachsmann, Martin ; Scherb, Hagen ; Griebler, Christian:
Organic contamination versus mineral properties : competing selective forces shaping bacterial community assembly in aquifer sediments.
In: Aquatic Microbial Ecology. Bd. 76 (2016) Heft 3 . - S. 243-255.
ISSN 1616-1564
DOI: https://doi.org/10.3354/ame01781

Zeitvogel, Fabian ; Schmid, Gregor ; Hao, Likai ; Ingino, Pablo ; Obst, Martin:
ScatterJ : An ImageJ plugin for the evaluation of analytical microscopy datasets.
In: Journal of Microscopy. Bd. 261 (2016) Heft 2 . - S. 148-156.
ISSN 1365-2818
DOI: https://doi.org/10.1111/jmi.12187

Zeitvogel, Fabian ; Obst, Martin:
ScatterJn : An ImageJ Plugin for Scatterplot-Matrix Analysis and Classification of Spatially Resolved Analytical Microscopy Data.
In: Journal of Open Research Software. Bd. 4 (2016) Heft 1 . - e5.
ISSN 2049-9647
DOI: https://doi.org/10.5334/jors.89

Schmid, Gregor ; Zeitvogel, Fabian ; Hao, Likai ; Adaktylou, Irini J. ; Eickhoff, Merle ; Obst, Martin:
Submicron-Scale Heterogeneities in Nickel Sorption of Various Cell–Mineral Aggregates Formed by Fe(II)-Oxidizing Bacteria.
In: Environmental Science & Technology. Bd. 50 (2016) Heft 1 . - S. 114-125.
ISSN 0013-936X
DOI: https://doi.org/10.1021/acs.est.5b02955

2015

Picard, Aude ; Kappler, Andreas ; Schmid, Gregor ; Quaroni, Luca ; Obst, Martin:
Experimental diagenesis of organo-mineral structures formed by microaerophilic Fe(II)-oxidizing bacteria.
In: Nature Communications. Bd. 6 (2015) . - No. 6277.
ISSN 2041-1723
DOI: https://doi.org/10.1038/ncomms7277

Picard, Aude ; Obst, Martin ; Schmid, Gregor ; Zeitvogel, Fabian ; Kappler, Andreas:
Limited influence of Si on the preservation of Fe mineral-encrusted microbial cells during experimental diagenesis.
In: Geobiology. Bd. 14 (2015) Heft 3 . - S. 276-292.
ISSN 1472-4669
DOI: https://doi.org/10.1111/gbi.12171

Han, Zhantao ; Sani, Badruddeen ; Mrozik, Wojciech ; Obst, Martin ; Beckingham, Barbara ; Karapanagioti, Hrissi K. ; Werner, David:
Magnetite impregnation effects on the sorbent properties of activated carbons and biochars.
In: Water Research. Bd. 70 (2015) . - S. 394-403.
ISSN 0043-1354
DOI: https://doi.org/10.1016/j.watres.2014.12.016

Swanner, Elizabeth D. ; Wu, Wenfang ; Hao, Likai ; Wüstner, Marina ; Obst, Martin ; Moran, Dawn M. ; McIlvin, Matthew R. ; Saito, Mak A. ; Kappler, Andreas:
Physiology, Fe(II) oxidation, and Fe mineral formation by a marine planktonic cyanobacterium grown under ferruginous conditions.
In: Frontiers in Earth Science. Bd. 3 (2015) . - S. 1-21.
ISSN 2296-6463
DOI: https://doi.org/10.3389/feart.2015.00060

Quaroni, Luca ; Obst, Martin ; Nowak, Marcus ; Zobi, Fabio:
Three-dimensional mid-infrared tomographic imaging of endogenous and exogenous molecules in a single intact cell with subcellular resolution.
In: Angewandte Chemie International Edition. Bd. 54 (2015) Heft 1 . - S. 318-322.
ISSN 1521-3773
DOI: https://doi.org/10.1002/anie.201407728

Jin, Xilang ; Hao, Likai ; She, Mengyao ; Obst, Martin ; Kappler, Andreas ; Yin, Bing ; Liu, Ping ; Li, Jianli ; Wang, Lanying ; Shi, Zhen:
Visualizing tributyltin (TBT) in bacterial aggregates by specific rhodamine-based fluorescent probes.
In: Analytica Chimica Acta. Bd. 853 (2015) . - S. 514-520.
ISSN 1873-4324
DOI: https://doi.org/10.1016/j.aca.2014.10.005

Yang, Zheng ; She, Mengyao ; Yin, Bing ; Hao, Likai ; Obst, Martin ; Liu, Ping ; Li, Jianli:
Solvent-dependent turn-on probe for dual monitoring of Ag⁺ and Zn²⁺ in living biological samples.
In: Analytica Chimica Acta. Bd. 868 (2015) . - S. 53-59.
ISSN 1873-4324
DOI: https://doi.org/10.1016/j.aca.2015.01.052

2014

Schmid, Gregor ; Zeitvogel, Fabian ; Hao, Likai ; Ingino, Pablo ; Floetenmeyer, Matthias ; Stierhof, York-D. ; Schroeppel, Birgit ; Burkhardt, Claus J. ; Kappler, Andreas ; Obst, Martin:
3-D analysis of bacterial cell-(iron)mineral aggregates formed during Fe(II) oxidation by the nitrate-reducing Acidovorax sp. strain BoFeN1 using complementary microscopy tomography approaches.
In: Geobiology. Bd. 12 (2014) Heft 4 . - S. 340-361.
ISSN 1472-4669
DOI: https://doi.org/10.1111/gbi.12088

Schmid, Gregor ; Obst, Martin:
3D chemical mapping : Application of scanning transmission (soft) X-ray microscopy (STXM) in combination with angle-scan tomography in bio-, geo- and environmental science.
In: Kuo, John (Hrsg.): Electron Microscopy : Methods and Protocols. 3rd ed. - Totowa, NJ : Humana Press , 2014 . - S. 757-781 . - (Methods in Molecular Biology ; 1117 )
ISBN 978-1-62703-776-1
DOI: https://doi.org/10.1007/978-1-62703-776-1

Wu, Wenfang ; Swanner, Elizabeth D. ; Hao, Likai ; Zeitvogel, Fabian ; Obst, Martin ; Pan, Yongxin ; Kappler, Andreas:
Characterization of the physiology and cell–mineral interactions of the marine anoxygenic phototrophic Fe(II) oxidizer Rhodovulum iodosum – implications for Precambrian Fe(II) oxidation.
In: FEMS Microbiology Ecology. Bd. 88 (2014) Heft 3 . - S. 503-515.
ISSN 1574-6941
DOI: https://doi.org/10.1111/1574-6941.12315

Eickhoff, Merle ; Obst, Martin ; Schröder, Christian ; Hitchcock, Adam P. ; Tyliszczak, Tolek ; Martinez, Raul E. ; Robbins, Leslie J. ; Konhauser, Kurt O. ; Kappler, Andreas:
Nickel partitioning in biogenic and abiogenic ferrihydrite : The influence of silica and implications for ancient environments.
In: Geochimica et Cosmochimica Acta. Bd. 140 (2014) . - S. 65-79.
ISSN 0016-7037
DOI: https://doi.org/10.1016/j.gca.2014.05.021

Klueglein, Nicole ; Zeitvogel, Fabian ; Stierhof, York-D. ; Floetenmeyer, Matthias ; Konhauser, Kurt O. ; Kappler, Andreas ; Obst, Martin:
Potential Role of Nitrite for Abiotic Fe(II) Oxidation and Cell Encrustation during Nitrate Reduction by Denitrifying Bacteria.
In: Applied and Environmental Microbiology. Bd. 80 (2014) Heft 3 . - S. 1051-1061.
ISSN 1098-5336
DOI: https://doi.org/10.1128/AEM.03277-13

Schmid, Gregor ; Zeitvogel, Fabian ; Hao, Likai ; Ingino, Pablo ; Kuerner, Wolfgang ; Dynes, James J. ; Karunakaran, Chithra ; Wang, Jian ; Lu, Yingshen ; Ayers, Travis ; Schietinger, Chuck ; Hitchcock, Adam P. ; Obst, Martin:
Synchrotron-Based Chemical Nano-Tomography of Microbial Cell-Mineral Aggregates in their Natural, Hydrated State.
In: Microscopy and Microanalysis. Bd. 20 (2014) Heft 2 . - S. 531-536.
ISSN 1435-8115
DOI: https://doi.org/10.1017/S1431927613014104

2013

Shimizu, Masayuki ; Zhou, Jihai ; Schröder, Christian ; Obst, Martin ; Kappler, Andreas ; Borch, Thomas:
Dissimilatory Reduction and Transformation of Ferrihydrite-Humic Acid Coprecipitates.
In: Environmental Science & Technology. Bd. 47 (2013) Heft 23 . - S. 13375-13384.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es402812j

Muehe, E. Marie ; Obst, Martin ; Hitchcock, Adam P. ; Tyliszczak, Tolek ; Behrens, Sebastian ; Schröder, Christian ; Byrne, James M. ; Michel, F. Marc ; Krämer, Ute ; Kappler, Andreas:
Fate of Cd during Microbial Fe(III) Mineral Reduction by a Novel and Cd-Tolerant Geobacter Species.
In: Environmental Science & Technology. Bd. 47 (2013) Heft 24 . - S. 14099-14109.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es403365w

Joens, Matthew S. ; Huynh, Chuong ; Kasuboski, James M. ; Ferranti, David ; Sigal, Yury J. ; Zeitvogel, Fabian ; Obst, Martin ; Burkhardt, Claus J. ; Curran, Kevin P. ; Chalasani, Sreekanth H. ; Stern, Lewis A. ; Goetze, Bernhard ; Fitzpatrick, James A. J.:
Helium Ion Microscopy (HIM) for the imaging of biological samples at sub-nanometer resolution.
In: Scientific Reports. Bd. 3 (2013) . - 3514.
ISSN 2045-2322
DOI: https://doi.org/10.1038/srep03514

Klueglein, Nicole ; Lösekann-Behrens, Tina ; Obst, Martin ; Behrens, Sebastian ; Appel, Erwin ; Kappler, Andreas:
Magnetite Formation by the Novel Fe(III)-reducing Geothrix fermentans Strain HradG1 Isolated from a Hydrocarbon-Contaminated Sediment with Increased Magnetic Susceptibility.
In: Geomicrobiology Journal. Bd. 30 (2013) Heft 10 . - S. 863-873.
ISSN 1521-0529
DOI: https://doi.org/10.1080/01490451.2013.790922

Hao, Likai ; Li, Jianli ; Kappler, Andreas ; Obst, Martin:
Mapping of Heavy Metal Ion Sorption to Cell-Extracellular Polymeric Substance-Mineral Aggregates by Using Metal-Selective Fluorescent Probes and Confocal Laser Scanning Microscopy.
In: Applied and Environmental Microbiology. Bd. 79 (2013) Heft 21 . - S. 6524-6534.
ISSN 1098-5336
DOI: https://doi.org/10.1128/AEM.02454-13

Muehe, E. Marie ; Adaktylou, Irini J. ; Obst, Martin ; Zeitvogel, Fabian ; Behrens, Sebastian ; Planer-Friedrich, Britta ; Krämer, Ute ; Kappler, Andreas:
Organic carbon and reducing conditions lead to cadmium immobilization by secondary Fe mineral formation in a pH-neutral soil.
In: Environmental Science & Technology. Bd. 47 (2013) Heft 23 . - S. 13430-13439.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es403438n

Yang, Zheng ; Hao, Likai ; Yin, Bing ; She, Mengyao ; Obst, Martin ; Kappler, Andreas ; Li, Jianli:
Six-Membered Spirocycle Triggered Probe for Visualizing Hg2+ in Living Cells and Bacteria–EPS–Mineral Aggregates.
In: Organic Letters. Bd. 15 (2013) Heft 17 . - S. 4334-4337.
ISSN 1523-7052
DOI: https://doi.org/10.1021/ol401795m

Jin, Xilang ; Hao, Likai ; Hu, Yanling ; She, Mengyao ; Shi, Yanning ; Obst, Martin ; Li, Jianli ; Shi, Zhen:
Two novel fluorescein-based fluorescent probes for hypochlorite and its real applications in tap water and biological imaging.
In: Sensors and Actuators B: Chemical. Bd. 186 (2013) . - S. 56-60.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2013.05.079

2012

Hitchcock, Adam P. ; Obst, Martin ; Wang, Jian ; Lu, Yingshen ; Tyliszczak, Tolek:
Advances in the detection of as in environmental samples using low energy X-ray fluorescence in a scanning transmission X-ray microscope : arsenic immobilization by an Fe(II)-oxidizing freshwater bacteria.
In: Environmental Science & Technology. Bd. 46 (2012) Heft 5 . - S. 2821-2829.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es202238k

Pantke, Claudia ; Obst, Martin ; Benzerara, Karim ; Morin, Guillaume ; Ona-Nguema, Georges ; Dippon, Urs ; Kappler, Andreas:
Green Rust Formation during Fe(II) Oxidation by the Nitrate-Reducing Acidovorax sp. Strain BoFeN1.
In: Environmental Science & Technology. Bd. 46 (2012) Heft 3 . - S. 1439-1446.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es2016457

Behrens, Sebastian ; Kappler, Andreas ; Obst, Martin:
Linking environmental processes to the in situ functioning of microorganisms by high-resolution secondary ion mass spectrometry (NanoSIMS) and scanning transmission X-ray microscopy (STXM).
In: Environmental Microbiology. Bd. 14 (2012) Heft 11 . - S. 2851-2869.
ISSN 1462-2920
DOI: https://doi.org/10.1111/j.1462-2920.2012.02724.x

Hilhorst, Jan ; van Schooneveld, Matti M. ; Wang, Jian ; de Smit, Emiel ; Tyliszczak, Tolek ; Raabe, Jörg ; Hitchcock, Adam P. ; Obst, Martin ; de Groot, Frank M. F. ; Pethukov, Andrei V.:
Three-Dimensional Structure and Defects in Colloidal Photonic Crystals Revealed by Tomographic Scanning Transmission X-ray Microscopy.
In: Langmuir. Bd. 28 (2012) Heft 7 . - S. 3614-3620.
ISSN 1520-5827
DOI: https://doi.org/10.1021/la204580y

2011

Obst, Martin ; Grathwohl, Peter ; Kappler, Andreas ; Eibl, Oliver ; Peranio, Nicola ; Gocht, Tilman:
Quantitative High-Resolution Mapping of Phenanthrene Sorption to Black Carbon Particles.
In: Environmental Science & Technology. Bd. 45 (2011) Heft 17 . - S. 7314-7322.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es2009117

Benzerara, Karim ; Menguy, Nicolas ; Obst, Martin ; Stolarski, JarosŁaw ; Mazur, Maciej ; Tyliszczak, Tolek ; Brown Jr., Gordon E. ; Meibom, Anders:
Study of the crystallographic architecture of corals at the nanoscale by scanning transmission X-ray microscopy and transmission electron microscopy.
In: Ultramicroscopy. Bd. 111 (2011) Heft 8 . - S. 1268-1275.
ISSN 0304-3991
DOI: https://doi.org/10.1016/j.ultramic.2011.03.023

2010

Lam, Karen P. ; Hitchcock, Adam P. ; Obst, Martin ; Lawrence, John R. ; Swerhone, George D. W. ; Leppard, Gary G. ; Tyliszczak, Tolek ; Karunakaran, Chithra ; Wang, Jian ; Kaznatcheev, Konstantin V. ; Bazylinski, Dennis A. ; Lins, Ulysses:
Characterizing magnetism of individual magnetosomes by X-ray magnetic circular dichroism in a scanning transmission X-ray microscope.
In: Chemical Geology. Bd. 270 (2010) Heft 1-4 . - S. 110-116.
ISSN 0009-2541
DOI: https://doi.org/10.1016/j.chemgeo.2009.11.009

2009

Obst, Martin ; Wehrli, Bernhard ; Dittrich, Maria:
CaCO3 nucleation by cyanobacteria : laboratory evidence for a passive, surface-induced mechanism.
In: Geobiology. Bd. 7 (2009) Heft 3 . - S. 324-347.
ISSN 1472-4669
DOI: https://doi.org/10.1111/j.1472-4669.2009.00200.x

Miot, Jennyfer ; Benzerara, Karim ; Obst, Martin ; Kappler, Andreas ; Hegler, Florian ; Schädler, Sebastian ; Bouchez, Camille ; Guyot, François ; Morin, Guillaume:
Extracellular Iron Biomineralization by Photoautotrophic Iron-Oxidizing Bacteria.
In: Applied and Environmental Microbiology. Bd. 75 (2009) Heft 17 . - S. 5586-5591.
ISSN 1098-5336
DOI: https://doi.org/10.1128/AEM.00490-09

Miot, Jennyfer ; Benzerara, Karim ; Morin, Guillaume ; Kappler, Andreas ; Bernard, Sylvain ; Obst, Martin ; Férard, Céline ; Skouri-Panet, Fériel ; Guigner, Jean-Michel ; Posth, Nicole ; Galvez, Matthieu ; Brown Jr., Gordon E. ; Guyot, François:
Iron biomineralization by anaerobic neutrophilic iron-oxidizing bacteria.
In: Geochimica et Cosmochimica Acta. Bd. 73 (2009) Heft 3 . - S. 696-711.
ISSN 0016-7037
DOI: https://doi.org/10.1016/j.gca.2008.10.033

Norlund, Kelsey L. I. ; Southam, Gordon ; Tyliszczak, Tolek ; Hu, Yongfeng ; Karunakaran, Chithra ; Obst, Martin ; Hitchcock, Adam P. ; Warren, Lesley A.:
Microbial architecture of environmental sulfur processes: a novel syntrophic sulfur-metabolizing consortia.
In: Environmental Science & Technology. Bd. 43 (2009) Heft 23 . - S. 8781-8786.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es803616k

Hanhan, Stephanie ; Smith, Anne Marie ; Obst, Martin ; Hitchcock, Adam P.:
Optimization of analysis of soft X-ray spectromicroscopy at the Ca 2p edge.
In: Journal of Electron Spectroscopy and Related Phenomena. Bd. 173 (2009) Heft 1 . - S. 44-49.
ISSN 1873-2526
DOI: https://doi.org/10.1016/j.elspec.2009.04.010

Obst, Martin ; Dynes, James J. ; Lawrence, John R. ; Swerhone, George D. W. ; Benzerara, Karim ; Karunakaran, Chithra ; Kaznatcheev, Konstantin V. ; Tyliszczak, Tolek ; Hitchcock, Adam P.:
Precipitation of amorphous CaCO3 (aragonite-like) by cyanobacteria: A STXM study of the influence of EPS on the nucleation process.
In: Geochimica et Cosmochimica Acta. Bd. 73 (2009) Heft 14 . - S. 4180-4198.
ISSN 0016-7037
DOI: https://doi.org/10.1016/j.gca.2009.04.013

Obst, Martin ; Wang, Jian ; Hitchcock, Adam P.:
Soft X-ray spectro-tomography study of cyanobacterial biomineral nucleation.
In: Geobiology. Bd. 7 (2009) Heft 5 . - S. 577-591.
ISSN 1472-4669
DOI: https://doi.org/10.1111/j.1472-4669.2009.00221.x

Hitchcock, Adam P. ; Dynes, James J. ; Lawrence, John R. ; Obst, Martin ; Swerhone, George D. W. ; Korber, Darren R. ; Leppard, Gary G.:
Soft X-ray spectromicroscopy of nickel sorption in a natural river biofilm.
In: Geobiology. Bd. 7 (2009) Heft 4 . - S. 432-453.
ISSN 1472-4669
DOI: https://doi.org/10.1111/j.1472-4669.2009.00211.x

2008

Hunter, Ryan C. ; Hitchcock, Adam P. ; Dynes, James J. ; Obst, Martin ; Beveridge, Terry J.:
Mapping the speciation of iron in Pseudomonas aeruginosa biofilms using scanning transmission X-ray microscopy.
In: Environmental Science & Technology. Bd. 42 (2008) Heft 23 . - S. 8766-8772.
ISSN 0013-936X
DOI: https://doi.org/10.1021/es801642z

Najafi, Ebrahim ; Cruz, Daniel Hernández ; Obst, Martin ; Hitchcock, Adam P. ; Douhard, Bastien ; Pireux, Jean-Jacques ; Felten, Alexandre:
Polarization Dependence of the C 1s X-ray Absorption Spectra of Individual Multi-Walled Carbon Nanotubes.
In: Small. Bd. 4 (2008) Heft 12 . - S. 2279-2285.
ISSN 1613-6829
DOI: https://doi.org/10.1002/smll.200800439

2007

Kaznacheyev, Konstantin V. ; Karunakaran, Chithra ; He, F. ; Sigrist, Michael ; Summers, Tasha ; Obst, Martin ; Hitchcock, Adam P.:
CLS ID-10 chicane configuration : From “Simple Sharing” to extended performance with high-speed polarization switching.
In: Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment. Bd. 582 (2007) Heft 1 . - S. 103-106.
ISSN 1872-9576
DOI: https://doi.org/10.1016/j.nima.2007.08.082

Kaznatcheev, Konstantin V. ; Karunakaran, Chithra ; Lanke, Uday D. ; Urquhart, Stephen G. ; Obst, Martin ; Hitchcock, Adam P.:
Soft X-ray spectromicroscopy beamline at the CLS : Commissioning results.
In: Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment. Bd. 582 (2007) Heft 1 . - S. 96-99.
ISSN 1872-9576
DOI: https://doi.org/10.1016/j.nima.2007.08.083

2006

Obst, Martin ; Dittrich, Maria ; Kuehn, Harald:
Calcium adsorption and changes of the surface microtopography of cyanobacteria studied by AFM, CFM, and TEM with respect to biogenic calcite nucleation.
In: Geochemistry, Geophysics, Geosystems. Bd. 7 (2006) Heft 6 .
ISSN 1525-2027
DOI: https://doi.org/10.1029/2005GC001172

2005

Obst, Martin ; Dittrich, Maria:
Living under an atomic force microscope : An optimized approach for in vivo investigations on surface alterations towards biomineral nucleation on cyanobacterial cells.
In: Geobiology. Bd. 3 (2005) Heft 3 . - S. 179-193.
ISSN 1472-4669
DOI: https://doi.org/10.1111/j.1472-4669.2005.00054.x

Obst, Martin ; Gasser, Philippe ; Mavrocordatos, Denis ; Dittrich, Maria:
TEM-specimen preparation of cell/mineral interfaces by Focused Ion Beam milling.
In: American Mineralogist. Bd. 90 (2005) Heft 8-9 . - S. 1270-1277.
ISSN 1945-3027
DOI: https://doi.org/10.2138/am.2005.1743

2004

Dittrich, Maria ; Obst, Martin:
Are Picoplankton Responsible for Calcite Precipitation in Lakes?
In: Ambio. Bd. 33 (2004) Heft 8 . - S. 559-564.
ISSN 1654-7209
DOI: https://doi.org/10.1579/0044-7447-33.8.559