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Precipitation of Barite by Myxococcus xanthus: Possible Implications for the Biogeochemical Cycle of Barium

By Maria Teresa González-Muñoz, Belén Fernández-Luque, Francisca Martínez-Ruiz, Kaoutar Ben Chekroun, José María Arias, Manuel Rodríguez-Gallego, Magdalena Martínez-Cañamero, Concepción de Linares and Adina Paytan


Bacterial precipitation of barite (BaSO(4)) under laboratory conditions is reported for the first time. The bacterium Myxococcus xanthus was cultivated in a solid medium with a diluted solution of barium chloride. Crystallization occurred as a result of the presence of live bacteria and the bacterial metabolic activity. A phosphorous-rich amorphous phase preceded the more crystalline barite formation. These experiments may indicate the involvement of bacteria in the barium biogeochemical cycle, which is closely related to the carbon cycle

Topics: Geomicrobiology
Publisher: American Society for Microbiology
Year: 2003
DOI identifier: 10.1128/AEM.69.9.5722-5725.2003
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Provided by: PubMed Central
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