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Rizlan Bernier-Latmani

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Publications associées (125)

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Fifteen years of microbiological investigation in Opalinus Clay at the Mont Terri rock laboratory (Switzerland)

Rizlan Bernier-Latmani, Alexandre Bagnoud

Microbiological studies related to the geological disposal of radioactive waste have been conducted at the Mont Terri rock laboratory in Opalinus Clay, a potential host rock for a deep geologic repository, since 2002. The metabolic potential of microorgani ...

Springer Basel Ag2017

The response of Desulfotomaculum reducens MI-1 to U(VI) exposure: a transcriptomic study

Rizlan Bernier-Latmani, Elena Cristina Dalla Vecchia

Desulfotomaculum reducens is the first Gram-positive sulfate- and metal-reducing bacterium for which the transcriptomic response to uranium exposure has been evaluated. The genes upregulated during fermentative growth in the presence of U(VI) as compared t ...

Taylor & Francis2011

Meta-omics-aided isolation of an elusive anaerobic arsenic-methylating soil bacterium

Rizlan Bernier-Latmani, Karin Lederballe Meibom, Karen Elda Viacava Romo, Nicolas Louis Maurice Jacquemin, Matthew Charles Reid, Jiangtao Qiao

Soil microbiomes harbor unparalleled functional and phylogenetic diversity and are sources of novel metabolisms. However, extracting isolates with a targeted function from complex microbiomes is not straightforward, particularly if the associated phenotype ...

2022

Arsenic methylation dynamics in a rice paddy soil anaerobic enrichment culture

Matthew Charles Reid, Rizlan Bernier-Latmani, Julien Maillard, Alexandre Bagnoud

Methylated arsenic (As) species represent a significant fraction of the As accumulating in rice grains, and there are geographic patterns in the abundance of methylated arsenic in rice that are not understood. The microorganisms driving As biomethylation i ...

Amer Chemical Soc2017

Energy efficiency and biological interactions define the core microbiome of deep oligotrophic groundwater

Rizlan Bernier-Latmani, Emma Bell

While oligotrophic deep groundwaters host active microbes attuned to the low-end of the bioenergetics spectrum, the ecological constraints on microbial niches in these ecosystems and their consequences for microbiome convergence are unknown. Here, we provi ...

Nature Research2021

Biogeochemical Cycling by a Low-Diversity Microbial Community in Deep Groundwater

Rizlan Bernier-Latmani, Manon Frutschi, Emma Bell

Olkiluoto, an island on the south-west coast of Finland, will host a deep geological repository for the storage of spent nuclear fuel. Microbially induced corrosion from the generation of sulphide is therefore a concern as it could potentially compromise t ...

Frontiers Media SA2018

BaiJ and BaiB are key enzymes in the chenodeoxycholic acid 7a-dehydroxylation pathway in the gut microbe Clostridium scindens ATCC 35704

Rizlan Bernier-Latmani, Laure Menin, Karin Lederballe Meibom, Eduard Vico Oton, Solenne Anne Marie Marion, Colin Volet, Théo Nass

Bile acid transformation is a common gut microbiome activity that produces secondary bile acids, some of which are important for human health. One such process, 7α-dehydroxylation, converts the primary bile acids, cholic acid and chenodeoxycholic acid, to ...

2024

Impact of microbial Mn oxidation on the remobilization of bioreduced U(IV)

Kelly Lee Plathe, Rizlan Bernier-Latmani

Effects of Mn redox cycling on the stability of bioreduced U(IV) are evaluated here. U(VI) can be biologically reduced to less soluble U(IV) species and the stimulation of biological activity to that end is a salient remediation strategy; however, the stab ...

American Chemical Society2013

SunCHem: an integrated process for the hydrothermal production of methane from microalgae and CO2 mitigation

Christian Ludwig, Rizlan Bernier-Latmani, Frédéric Vogel, Martin Brandenberger

Springer Verlag2009

Role of proteins in the controlling selenium nanoparticle size

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Jan Dobias

This work investigates the potential for harnessing the association of bacterial proteins to biogenic selenium nanoparticles (SeNPs) to control the size distribution and the morphology of the resultant SeNPs. We conducted a proteomic study and compared pro ...

Institute of Physics2011

Environmental Mineralogy: New challenges, new materials

Rizlan Bernier-Latmani

The close links between mineralogy and materials science are leading to major developments in how society deals more effectively with energy and environmental challenges. The fast expanding field of "environmental mineralogy" helps mitigate major environme ...

Mineralogical Soc Amer2015

Products of abiotic U(VI) reduction by biogenic magnetite and vivianite

Rizlan Bernier-Latmani, Daniel Scott Alessi, Elena Suvorova Buffat, Harish Veeramani, Jonathan Sharp

Reductive immobilization of uranium by the stimulation of dissimilatory metal-reducing bacteria (DMRB) has been investigated as a remediation strategy for subsurface U(VI) contamination. In those environments, DMRB may utilize a variety of electron accepto ...

Elsevier2011

Speciation and reactivity of uranium products formed during in situ bioremediation in a shallow alluvial aquifer

Rizlan Bernier-Latmani, Daniel Scott Alessi, Elena Suvorova Buffat

In this study, we report the results of in situ U(VI) bioreduction experiments at the Integrated Field Research Challenge site in Rifle, Colorado, USA. Columns filled with sediments were deployed into a groundwater well at the site and, after a period of c ...

Amer Chemical Soc2014

U(VI) reduction by spores of Clostridium acetobutylicum

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Harish Veeramani, Elena Cristina Dalla Vecchia

Vegetative cells of Clostridium acetobutylicum are known to reduce hexavalent uranium (U(VI)). We investigated the ability of spores of this organism to drive the same reaction. We found that spores were able to remove U(VI) from solution when H, was provi ...

Elsevier2010

Growth substrate limitation enhances anaerobic arsenic methylation by Paraclostridium bifermentans strain EML

Rizlan Bernier-Latmani, Karin Lederballe Meibom, Hugo Sallet, Jiangtao Qiao

Microbial arsenic methylation is established as a detoxification process under aerobic conditions (converting arsenite to monomethylated arsenate) but is proposed to be a microbial warfare strategy under anoxic conditions due to the toxicity of its main pr ...

American Society for Microbiology2024

Biostimulation as a sustainable solution for acid neutralization and uranium immobilization post acidic in-situ recovery

Rizlan Bernier-Latmani, Pierre Rossi, Thomas Coral

Major uranium (U) deposits worldwide are exploited by acid leaching, known as 'in-situ recovery' (ISR). ISR involves the injection of an acid fluid into ore-bearing aquifers and the pumping of the resulting metal-containing solution through cation exchange ...

2022

Biogenic non-crystalline U(IV) revealed as major component in uranium ore deposits

Rizlan Bernier-Latmani

Historically, it is believed that crystalline uraninite, produced via the abiotic reduction of hexavalent uranium (U-(VI)) is the dominant reduced U species formed in low-temperature uranium roll-front ore deposits. Here we show that non-crystalline U-(IV) ...

Nature Publishing Group2017

Membrane vesicles as a novel strategy for shedding encrusted cell surfaces

Rizlan Bernier-Latmani, Paul Pao-Yun Shao

Surface encrustation by minerals, which impedes cellular metabolism, is a potential hazard for microbes. The reduction of U(VI) to U(IV) by Shewanella oneidensis strain MR-1 leads to the precipitation of the mineral uraninite, as well as a non-crystalline ...

Mdpi Ag2014

Speciation-dependent molecular mechanism of electron transfer from the c-type cytochrome MtrC to U(VI)-ligand complexes

Rizlan Bernier-Latmani, Luciano Andres Abriata, Karin Lederballe Meibom, Margaux Camille Andréa Molinas

Members of the Shewanella genus transfer electrons to metal and actinide electron acceptors such as hexavalent uranium, U(VI), via c-type cytochromes. The intracellular mechanism of electron transfer is well studied but the delivery of electrons to externa ...

2025

Oxidative dissolution of biogenic uraninite in groundwater at Old Rifle, CO

Rizlan Bernier-Latmani, Elena Suvorova Buffat, Harish Veeramani

Reductive bioremediation is currently being explored as a possible strategy for uranium-contaminated aquifers such as the Old Rifle site (Colorado). The stability of U(IV) phases under oxidizing conditions is key to the performance of this procedure. An in ...

2011