RESEARCH ARTICLE Microbial diversity involved in iron and cryptic sulfur cycling in the ferruginous, low-sulfate waters of Lake Pavin 1¤ 2 1 3 Jasmine S. BergID *, Didier JeÂzeÂquel , Arnaud Duverger , Dominique Lamy , Christel Laberty-Robert4, Jennyfer Miot1 1 Institut de MineÂralogie, Physique des Mat00E9riaux et Cosmochimie, CNRS UMR 7590, MuseÂum National d'Histoire Naturelle, Sorbonne UniversiteÂs, Paris, France, 2 Laboratoire de GeÂochimie des Eaux, Institut de Physique du Globe de Paris, UMR CNRS 7154, Universite Paris Diderot, Paris, France, 3 Unite Biologie des a1111111111 Organismes et Ecosystèmes Aquatiques (BOREA), MuseÂum National d'Histoire Naturelle, Sorbonne a1111111111 UniversiteÂ, Universite de Caen Normandie, Universite des Antilles, CNRS, IRD, Paris, France, 4 Laboratoire a1111111111 de Chimie de la Matière CondenseÂe de Paris, Universite Pierre et Marie Curie, Paris, France a1111111111 a1111111111 ¤ Current address: Department of Environmental Systems Science, ETH Zurich, Switzerland *
[email protected] Abstract OPEN ACCESS Both iron- and sulfur- reducing bacteria strongly impact the mineralogy of iron, but their Citation: Berg JS, JeÂzeÂquel D, Duverger A, Lamy D, Laberty-Robert C, Miot J (2019) Microbial diversity activity has long been thought to be spatially and temporally segregated based on the higher involved in iron and cryptic sulfur cycling in the thermodynamic yields of iron over sulfate reduction. However, recent evidence suggests ferruginous, low-sulfate waters of Lake Pavin. that sulfur cycling can predominate even under ferruginous conditions. In this study, we PLoS ONE 14(2): e0212787. https://doi.org/ 10.1371/journal.pone.0212787 investigated the potential for bacterial iron and sulfur metabolisms in the iron-rich (1.2 mM dissolved Fe2+), sulfate-poor (< 20 μM) Lake Pavin which is expected to host large popula- Editor: John M.