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Updated: May 31, 2026

Bioprospecting of Extremophilic Microorganisms to Address Environmental Pollution
Published on: December 30, 2021
Taxonomic and functional prokaryote diversity in mildly arsenic-contaminated sediments
David Halter1, Audrey Cordi, Simonetta Gribaldo
1Laboratoire de Génétique Moléculaire, Génomique, Microbiologie, Département Microorganismes, Génomes, Environnement, UMR7156 Université de Strasbourg/CNRS, 28 rue Goethe, 67083 Strasbourg Cedex, France. David.halter@gem.u-strasbg.fr
Abstract:
Arsenic-resistant prokaryote diversity is far from being exhaustively explored. In this study, the arsenic-adapted prokaryotic community present in a moderately arsenic-contaminated site near Sainte-Marie-aux-Mines (France) was characterized, using metaproteomic and 16S rRNA-encoding gene amplification. High prokaryotic diversity was observed, with a majority of Proteobacteria, Acidobacteria and Bacteroidetes, and a large archaeal community comprising Euryarchaeaota and Thaumarchaeota. Metaproteomic analysis revealed that Proteobacteria, Planctomycetes and Cyanobacteria are among the active bacteria in this ecosystem. Taken together, these results highlight the unsuspected high diversity of the arsenic-adapted prokaryotic community, with some phyla never having been described in highly arsenic-exposed sites.
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