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Symbiotic cooperation between freshwater rock-boring bivalves and microorganisms promotes silicate bioerosion.
Daval, Damien; Guyot, François; Bolotov, Ivan N; Vikhrev, Ilya V; Kondakov, Alexander V; Lyubas, Artem A; Bychkov, Andrey Y; Yapaskurt, Vasily O; Cabié, Martiane; Pokrovsky, Oleg S.
Afiliación
  • Daval D; Laboratoire d'Hydrologie et de Géochimie de Strasbourg, UMR 7517, Université de Strasbourg-CNRS/ENGEES-EOST, Strasbourg, France. ddaval@unistra.fr.
  • Guyot F; Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, Museum National d'Histoire Naturelle, Sorbonne-Université, UMR 7590 CNRS, Paris, France.
  • Bolotov IN; Institut Universitaire de France, Paris, France.
  • Vikhrev IV; N. Laverov Federal Center for Integrated Arctic Research, The Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russia.
  • Kondakov AV; N. Laverov Federal Center for Integrated Arctic Research, The Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russia.
  • Lyubas AA; N. Laverov Federal Center for Integrated Arctic Research, The Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russia.
  • Bychkov AY; N. Laverov Federal Center for Integrated Arctic Research, The Ural Branch of the Russian Academy of Sciences, Northern Dvina Emb. 23, 163000, Arkhangelsk, Russia.
  • Yapaskurt VO; Lomonosov Moscow State University, Faculty of Geology, Leninskiye Gory, 1, 119991, Moscow, Russia.
  • Cabié M; Lomonosov Moscow State University, Faculty of Geology, Leninskiye Gory, 1, 119991, Moscow, Russia.
  • Pokrovsky OS; Aix-Marseille Université, CNRS, Centrale Marseille, FSCM, CP2M, Marseille, France.
Sci Rep ; 10(1): 13385, 2020 08 07.
Article en En | MEDLINE | ID: mdl-32770130
Bioerosion is a process with a high socio-economic impact that contributes to coastal retreat, and likely to increase with climate change. Whereas limestone bioerosion is well explained by a combination of mechanical and chemical pathways, the bioerosion mechanisms of silicates, which are harder and chemically more resistant, remain elusive. Here we investigated the interface between siltstone and freshwater rock-boring bivalves Lignopholas fluminalis (Bivalvia: Pholadidae). Remains of a microbial biofilm were observed only in the poorly consolidated part of the rock within the macroborings created by bivalves. Secondary Mn-bearing minerals identified in the biofilm suggest that microbes promoted silicate rock weathering by dissolving Mn-rich chlorites. Moreover, hard mineral debris found in a biofilm attached to the shells likely contributed to the abrasion of the rock substrate. Thus, beyond the classical view of chemical and/or mechanical action(s) of macroborers, silicate bioerosion may also be facilitated by an unexpected synergistic association between macro- and microorganisms.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2020 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Rep Año: 2020 Tipo del documento: Article País de afiliación: Francia Pais de publicación: Reino Unido