Search Results - "Karim, Benzerara"

An Early-Branching Freshwater Cyanobacterium at the Origin of Plastids by Ponce-Toledo, Rafael I., Deschamps, Philippe, López-García, Purificación, Zivanovic, Yvan, Benzerara, Karim, Moreira, David

“…Photosynthesis evolved in eukaryotes by the endosymbiosis of a cyanobacterium, the future plastid, within a heterotrophic host. This primary endosymbiosis…”
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Graphite formation by carbonate reduction during subduction by Galvez, Matthieu E., Beyssac, Olivier, Martinez, Isabelle, Benzerara, Karim, Chaduteau, Carine, Malvoisin, Benjamin, Malavieille, Jacques

“…Carbon is carried into the Earth at subduction zones. Geochemical analysis of subducted sediments now exhumed in Alpine Corsica, France, reveal the formation…”
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Acoustic monitoring of laser-induced phase transitions in minerals: implication for Mars exploration with SuperCam by Chide, Baptiste, Beyssac, Olivier, Gauthier, Michel, Benzerara, Karim, Estève, Imène, Boulliard, Jean-Claude, Maurice, Sylvestre, Wiens, Roger C.

“…The SuperCam instrument suite onboard the Mars 2020 Perseverance rover uses the laser-induced breakdown spectroscopy (LIBS) technique to determine the…”
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Green Rust Formation during Fe(II) Oxidation by the Nitrate-Reducing Acidovorax sp. Strain BoFeN1 by Pantke, Claudia, Obst, Martin, Benzerara, Karim, Morin, Guillaume, Ona-Nguema, Georges, Dippon, Urs, Kappler, Andreas

“…Green rust (GR) as highly reactive iron mineral potentially plays a key role for the fate of (in)organic contaminants, such as chromium or arsenic, and…”
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Biomineralization of iron-phosphates in the water column of Lake Pavin (Massif Central, France) by Cosmidis, Julie, Benzerara, Karim, Morin, Guillaume, Busigny, Vincent, Lebeau, Oanez, Jézéquel, Didier, Noël, Vincent, Dublet, Gabrielle, Othmane, Guillaume

“…The availabilities of iron and phosphorus have considerably impacted biological productivity in past and present natural aquatic environments, and therefore…”
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Intracellular Ca-carbonate biomineralization is widespread in cyanobacteria by Benzerara, Karim, Skouri-Panet, Feriel, Li, Jinhua, Férard, Céline, Gugger, Muriel, Laurent, Thierry, Couradeau, Estelle, Ragon, Marie, Cosmidis, Julie, Menguy, Nicolas, Margaret-Oliver, Isabel, Tavera, Rosaluz, López-García, Purificación, Moreira, David

“…Cyanobacteria have played a significant role in the formation of past and modern carbonate deposits at the surface of the Earth using a biomineralization…”
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Multidisciplinary evidences that Synechocystis PCC6803 exopolysaccharides operate in cell sedimentation and protection against salt and metal stresses by Jittawuttipoka, Thichakorn, Planchon, Mariane, Spalla, Olivier, Benzerara, Karim, Guyot, François, Cassier-Chauvat, Corinne, Chauvat, Franck

“…Little is known about the production of exopolysaccharides (EPS) in cyanobacteria, and there are no genetic and physiological evidences that EPS are involved…”
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An Early-Branching Microbialite Cyanobacterium Forms Intracellular Carbonates by Couradeau, Estelle, Benzerara, Karim, Gérard, Emmanuelle, Moreira, David, Bernard, Sylvain, Brown, Gordon E., López-García, Purificación

“…Cyanobacteria have affected major geochemical cycles (carbon, nitrogen, and oxygen) on Earth for billions of years. In particular, they have played a major…”
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Impact of biomineralization on the preservation of microorganisms during fossilization: An experimental perspective by Li, Jinhua, Bernard, Sylvain, Benzerara, Karim, Beyssac, Olivier, Allard, Thierry, Cosmidis, Julie, Moussou, Julien

“…The biogenicity of fossil microbial biomorphs is often debated because their morphologies are poorly informative and the chemical, structural and isotopic…”
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Core microbial communities of lacustrine microbialites sampled along an alkalinity gradient by Iniesto, Miguel, Moreira, David, Reboul, Guillaume, Deschamps, Philippe, Benzerara, Karim, Bertolino, Paola, Saghaï, Aurélien, Tavera, Rosaluz, López‐García, Purificación

“…Summary Microbialites are usually carbonate‐rich sedimentary rocks formed by the interplay of phylogenetically and metabolically complex microbial communities…”
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Intracellular amorphous Ca-carbonate and magnetite biomineralization by a magnetotactic bacterium affiliated to the Alphaproteobacteria by Monteil, Caroline L., Benzerara, Karim, Menguy, Nicolas, Bidaud, Cécile C., Michot-Achdjian, Emmanuel, Bolzoni, Romain, Mathon, François P., Coutaud, Margot, Alonso, Béatrice, Garau, Camille, Jézéquel, Didier, Viollier, Eric, Ginet, Nicolas, Floriani, Magali, Swaraj, Sufal, Sachse, Martin, Busigny, Vincent, Duprat, Elodie, Guyot, François, Lefevre, Christopher T.

“…Bacteria synthesize a wide range of intracellular submicrometer-sized inorganic precipitates of diverse chemical compositions and structures, called…”
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Prokaryotic and eukaryotic community structure in field and cultured microbialites from the alkaline Lake Alchichica (Mexico) by Couradeau, Estelle, Benzerara, Karim, Moreira, David, Gérard, Emmanuelle, Kaźmierczak, Józef, Tavera, Rosaluz, López-García, Purificación

“…The geomicrobiology of crater lake microbialites remains largely unknown despite their evolutionary interest due to their resemblance to some Archaean analogs…”
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Extracellular Iron Biomineralization by Photoautotrophic Iron-Oxidizing Bacteria by Miot, Jennyfer, Benzerara, Karim, Obst, Martin, Kappler, Andreas, Hegler, Florian, Schädler, Sebastian, Bouchez, Camille, Guyot, François, Morin, Guillaume

“…Iron oxidation at neutral pH by the phototrophic anaerobic iron-oxidizing bacterium Rhodobacter sp. strain SW2 leads to the formation of iron-rich minerals…”
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Biogenic versus metamorphic origins of diverse microtubes in 2.7 Gyr old volcanic ashes: Multi-scale investigations by Lepot, Kevin, Benzerara, Karim, Philippot, Pascal

“…Titanite-bearing microtubes in metabasalts have been interpreted as evidence for early microbial life thriving in the oceanic crust up to 3.5 Ga ago based on…”
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Ectosymbiotic bacteria at the origin of magnetoreception in a marine protist by Monteil, Caroline L., Vallenet, David, Menguy, Nicolas, Benzerara, Karim, Barbe, Valérie, Fouteau, Stéphanie, Cruaud, Corinne, Floriani, Magali, Viollier, Eric, Adryanczyk, Géraldine, Leonhardt, Nathalie, Faivre, Damien, Pignol, David, López-García, Purificación, Weld, Richard J., Lefevre, Christopher T.

“…Mutualistic symbioses are often a source of evolutionary innovation and drivers of biological diversification 1 . Widely distributed in the microbial world,…”
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Quantification of the ferric/ferrous iron ratio in silicates by scanning transmission X-ray microscopy at the Fe L2,3 edges by Bourdelle, Franck, Benzerara, Karim, Beyssac, Olivier, Cosmidis, Julie, Neuville, Daniel R., Brown, Gordon E., Paineau, Erwan

“…Estimation of Fe 3+ /ΣFe ratios in materials at the submicrometre scale has been a long-standing challenge in the Earth and environmental sciences because of…”
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Iron biomineralization by anaerobic neutrophilic iron-oxidizing bacteria by 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, Gordon E., Guyot, François

“…Minerals formed by bio-oxidation of ferrous iron (Fe(II)) at neutral pH, their association with bacterial ultrastructures as well as their impact on the…”
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Formation of single domain magnetite by green rust oxidation promoted by microbial anaerobic nitrate-dependent iron oxidation by Miot, Jennyfer, Li, Jinhua, Benzerara, Karim, Sougrati, Moulay Tahar, Ona-Nguema, Georges, Bernard, Sylvain, Jumas, Jean-Claude, Guyot, François

“…Biomineralization of magnetite is a central geomicrobiological process that might have played a primordial role over Earth’s history, possibly leaving traces…”
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Quantitative mapping of calcium cell reservoirs in cyanobacteria at the submicrometer scale by Karim, Benzerara, Sigrid, Görgen, Athar, Khan Monis, Franck, Chauvat, Katia, March, Nicolas, Menguy, Neha, Mehta, Fériel, Skouri-Panet, Sufal, Swaraj, Cynthia, Travert, Corinne, Cassier-Chauvat, Elodie, Duprat

“…Calcium plays an important role in the physiology of bacterial cells and as a free soluble form inside the cells, it is tightly regulated at a low…”
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Specific carbonate–microbe interactions in the modern microbialites of Lake Alchichica (Mexico) by Gérard, Emmanuelle, Ménez, Bénédicte, Couradeau, Estelle, Moreira, David, Benzerara, Karim, Tavera, Rosaluz, López-García, Purificación

“…The role of microorganisms in microbialite formation remains unresolved: do they induce mineral precipitation (microbes first) or do they colonize and/or…”
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