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Biogeochemical insights into microbe–mineral–fluid interactions in hydrothermal chimneys using enrichment culture

Content Provider	Springer Nature Link
Author	Callac, lwenn Rouxel, Olivier Lesongeur, Françoise Liorzou, Céline Bollinger, Claire Pignet, Patricia Chéron, Sandrine Fouquet, Yves Rommevaux Jestin, Céline Godfroy, Anne
Copyright Year	2015
Abstract	Active hydrothermal chimneys host diverse microbial communities exhibiting various metabolisms including those involved in various biogeochemical cycles. To investigate microbe–mineral–fluid interactions in hydrothermal chimney and the driver of microbial diversity, a cultural approach using a gas-lift bioreactor was chosen. An enrichment culture was performed using crushed active chimney sample as inoculum and diluted hydrothermal fluid from the same vent as culture medium. Daily sampling provided time-series access to active microbial diversity and medium composition. Active archaeal and bacterial communities consisted mainly of sulfur, sulfate and iron reducers and hydrogen oxidizers with the detection of Thermococcus, Archaeoglobus, Geoglobus, Sulfurimonas and Thermotoga sequences. The simultaneous presence of active Geoglobus sp. and Archaeoglobus sp. argues against competition for available carbon sources and electron donors between sulfate and iron reducers at high temperature. This approach allowed the cultivation of microbial populations that were under-represented in the initial environmental sample. The microbial communities are heterogeneously distributed within the gas-lift bioreactor; it is unlikely that bulk mineralogy or fluid chemistry is the drivers of microbial community structure. Instead, we propose that micro-environmental niche characteristics, created by the interaction between the mineral grains and the fluid chemistry, are the main drivers of microbial diversity in natural systems.
Starting Page	597
Ending Page	617
Page Count	21
File Format	PDF
ISSN	14310651
Journal	Extremophiles
Volume Number	19
Issue Number	3
e-ISSN	14334909
Language	English
Publisher	Springer Japan
Publisher Date	2015-03-17
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Active microbial diversity Continuous enrichment culture Deep-sea hydrothermal vent Hydrothermal fluid Iron cycle Sulfur cycle Microbiology Biotechnology Biochemistry Microbial Ecology
Content Type	Text
Resource Type	Article
Subject	Medicine Molecular Medicine Microbiology

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Continuous enrichment cultures: insights into prokaryotic diversity and metabolic interactions in deep-sea vent chimneys

Biogeochemical insights into microbe–mineral–fluid interactions in hydrothermal chimneys using enrichment culture

Continuous enrichment cultures: insights into prokaryotic diversity and metabolic interactions in deep-sea vent chimneys

Effect of variation of environmental conditions on the microbial communities of deep-sea vent chimneys, cultured in a bioreactor

Original paper continuous enrichment cultures: insights into prokaryotic diversity and metabolic interactions in deep-sea vent chimneys.

Continuous Enrichment Culture and Molecular Monitoring to Investigate the Microbial Diversity of Thermophiles Inhabiting Deep-Sea Hydrothermal Ecosystems

Distribution of Microorganisms in Deep-Sea Hydrothermal Vent Chimneys Investigated by Whole-Cell Hybridization and Enrichment Culture of Thermophilic Subpopulations

Deep-Sea Hydrothermal Vent Viruses Compensate for Microbial Metabolism in Virus-Host Interactions

Distribution of microorganisms in deep-sea hydrothermal vent chimneys investigated by whole-cell hybridization and enrichment culture of thermophilic subpopulations.

Biogeochemical insights into microbe–mineral–fluid interactions in hydrothermal chimneys using enrichment culture

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Continuous enrichment cultures: insights into prokaryotic diversity and metabolic interactions in deep-sea vent chimneys

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Biogeochemical insights into microbe–mineral–fluid interactions in hydrothermal chimneys using enrichment culture