Genome reconstruction reveals distinct assemblages of Gallionellaceae in surface and subsurface redox transition zones

FEMS Microbiology Ecology
Lorine BethencourtAlexis Dufresne

Abstract

Fe-oxidizing bacteria of the family Gallionellaceae are major players in the Fe biogeochemical cycle in freshwater. These bacteria thrive in redox transition zones where they benefit from both high Fe concentrations and microaerobic conditions. We analysed the Gallionellaceae genomic diversity in an artesian hard-rock aquifer where redox transition zones develop (i) in the subsurface, where ancient, reduced groundwater mixes with recent oxygenated groundwater, and (ii) at the surface, where groundwater reaches the open air. Fifteen new draft genomes of Gallionellaceae representing to 11 candidate genera were recovered from the two redox transition zones. Sulfur oxidation genes were encoded in most genomes while denitrification genes were much less represented. One genus dominated microbial communities belowground and we propose to name it 'Candidatus Houarnoksidobacter'. The two transition zones were populated by completely different assemblages of Gallionellaceae despite the almost constant upward circulation of groundwater between the two zones. The processes leading to redox transition zones, oxygen diffusion at the surface or groundwater mixing in subsurface, appear to be a major driver of the Gallionellaceae diversity.

References

Mar 23, 2004·Nucleic Acids Research·Robert C Edgar
Nov 1, 1994·Applied and Environmental Microbiology·D Emerson, N P Revsbech
Feb 5, 2008·Journal of Experimental Botany·Murray Ronald Badger, Emily Jane Bek
Mar 10, 2010·BMC Bioinformatics·Doug HyattLoren J Hauser
Aug 13, 2011·Frontiers in Microbiology·Lea H GregersenNiels-Ulrik Frigaard
Apr 18, 2012·Journal of Computational Biology : a Journal of Computational Molecular Cell Biology·Anton BankevichPavel A Pevzner
Feb 21, 2013·Bioinformatics·Alexey GurevichGlenn Tesler
Mar 15, 2013·The ISME Journal·Trinity L HamiltonEric S Boyd
Nov 15, 2013·The ISME Journal·Emily J FlemingDavid Emerson
Jan 16, 2014·International Journal of Systematic and Evolutionary Microbiology·Shingo KatoMoriya Ohkuma
Mar 20, 2014·Bioinformatics·Torsten Seemann
Jul 18, 2014·PloS One·Achim QuaiserPhilippe Vandenkoornhuyse
Sep 15, 2014·Nature Methods·Johannes AlnebergChristopher Quince
Oct 21, 2014·Nature Reviews. Microbiology·Emily D MeltonAndreas Kappler
Nov 18, 2014·Nature Methods·Benjamin BuchfinkDaniel H Huson
Mar 10, 2015·Systematic and Applied Microbiology·Ramon Rosselló-Móra, Rudolf Amann
Jan 7, 2016·Frontiers in Microbiology·Sarah Ben MaamarAlexis Dufresne
Feb 17, 2017·Antonie van Leeuwenhoek·Seok-Hwan YoonJongsik Chun
Oct 21, 2017·Nature Communications·Rosalia TriasEmmanuelle Gérard
Jul 31, 2018·Environmental Microbiology·Casey BryceAndreas Kappler

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