Jean-Christophe Auguet

Informations


: (0033) 467144571

Institut : CNRS

GRADE : CR2

LIEU GEOGRAPHIQUE : MONTPELLIER




Pôles communs : Modélisation


BIOGRAPHIE :

RESEARCH THEMES

Since February 2012, I am hired as a permanent scientist (CR2-CNRS). My research focuses on the ecology of microorganisms (with a little preference towards Archaea) and more particularly on their ecological relevance in aquatic habitats. We use a combination of approaches from macro-ecology, molecular ecology and bioinformatics to investigate aspects ranging from macroevolution and macroecology to community assembly and biogeography of microbes and functional genes implicated in the Nitrogen and Carbon cycles.

Currently I’m working on :

  • Ecology of uncultured Archaea

The study of the biology and ecology of Archaea is currently among the most exciting and dynamic research topics in microbial ecology. In less than two decades the status of these enigmatic microorganisms has changed completely. The popularization of environmental ribosomal gene analysis has revolutionized the biased perception on their biology and ecology. The new tools have expanded archaeal ecological distribution and metabolic diversity far beyond expected, unveiling a widespread distribution and an unexpected diversity. However and as demonstrated by the difficulty to cultivate them, knowledge on their potential metabolisms and environmental factors that may drive their community structure is very limited. Currently, I have ongoing work examining the diversity and dynamics of Archaea in marine and freshwater habitats and their role in the biogeochemical cycles of these habitats. This research is supported by projects :

  • METMIC (2013-2015), funded by CTP
  • EUREKA (2015-2018), funded by ANR
  • Microbial diversity and interactions patterns at variable spatial scales

Microorganisms (i.e. Archaea, Bacteria, micro-Eukaryotes and viruses) comprise most of life’s diversity, are the most abundant forms of life on Earth, and are the engines of the most important biogeochemical cycles on our planets. However, despite the importance of micro-organisms, we know very little about their spatial distribution, the processes underlying these distributions and their interactions. In order to understand these fundamental aspects of microbe’s ecology, we try to use an array of approaches coming from macro-ecology, macro-evolution and statistics. This research is supported by projects :

  • METMIC (2013-2015), funded by CTP
  • INTERMIC (2012-2014), funded by EC2CO
  • Microbiomes

Publications

2016

Fillol, M., et al. "Insights in the ecology and evolutionary history of the Miscellaneous Crenarchaeotic Group lineage." Isme J. 10.3 (2016): 665–677.
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Jeanbille, M., et al. "Response of Core Microbial Consortia to Chronic Hydrocarbon Contaminations in Coastal Sediment Habitats." Front. Microbiol. (2016): 1637.
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Jeanbille, M., et al. "Chronic Polyaromatic Hydrocarbon (PAH) Contamination Is a Marginal Driver for Community Diversity and Prokaryotic Predicted Functioning in Coastal Sediments." Front. Microbiol.. 7 (2016): Unsp-1303.
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Roux, S., et al. "Analysis of metagenomic data reveals common features of halophilic viral communities across continents." Environ Microbiol. 18.3 (2016): 889–903.
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2015

Faure, D., et al. "Environmental microbiology as a mosaic of explored ecosystems and issues." Environmental Science and Pollution Research. 22.18 (2015): 13577–13598.
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Sarmento, H., et al. "Microbial food web components, bulk metabolism, and single-cell physiology of piconeuston in surface microlayers of high-altitude lakes." Front Microbiol. 6 (2015).
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2014

Merbt, S. N., et al. "Wastewater Treatment Plant Effluents Change Abundance and Composition of Ammonia-Oxidizing Microorganisms in Mediterranean Urban Stream Biofilms." Microb Ecol (2014).
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Restrepo-Ortiz, C. X., J. C. Auguet, and E. O. Casamayor. "Targeting spatiotemporal dynamics of planktonic SAGMGC-1 and segregation of ammonia-oxidizing thaumarchaeota ecotypes by newly designed primers and quantitative polymerase chain reaction." Environmental Microbiology. 16.3 (2014): 689–700.
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2013

Auguet, J. C., and E. O. Casamayor. "Partitioning of Thaumarchaeota populations along environmental gradients in high mountain lakes." FEMS Microbiology Ecology. 84.1 (2013): 154–164.
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Cao, H., J. - C. Auguet, and J. - D. Gu. "Global ecological pattern of ammonia-oxidizing archaea." PLoS ONE. 8.2 (2013): e52853.
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Vila-Costa, M., et al. "Bacterial and archaeal community structure in the surface microlayer of high mountain lakes examined under two atmospheric aerosol loading scenarios." FEMS Microbiology Ecology (2013).
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2012

Auguet, J. C., et al. "Vertical segregation and phylogenetic characterization of ammonia-oxidizing Archaea in a deep oligotrophic lake." Isme J. 6 (2012): 1786–1797.
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Llorens-Marès, T., J. C. Auguet, and E. O. Casamayor. "Winter to Spring changes in the slush bacterial community composition of a high mountain lake (Lake Redon, Pyrenees)." Environ. Microbiol. Rep.. 4.1 (2012): 50–56.
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2011

Auguet, J. C., et al. "Seasonal changes of freshwater ammonia-oxidizing archaeal assemblages and nitrogen species in oligotrophic alpine lakes." Appl Environ Microbiol. 77.6 (2011): 1937–1945.
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Barberan, A., et al. "Phylogenetic ecology of widespread uncultured clades of the Kingdom Euryarchaeota." Mol Ecol. 20.9 (2011): 1988–1996.
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Merbt, S. N., et al. "Biofilm recovery in a wastewater treatment plant-influenced stream and spatial segregation of ammonia-oxidizing microbial populations." Limnology and Oceanography. 56.3 (2011): 1054–1064.
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2010

Auguet, J. C., A. Barberan, and E. O. Casamayor. "Global ecological patterns in uncultured Archaea." Isme J. 4.2 (2010): 182–190.
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Lliros, M., et al. "Vertical distribution of ammonia-oxidizing crenarchaeota and methanogens in the epipelagic waters of Lake Kivu (Rwanda-Democratic Republic of the Congo)." Appl Environ Microbiol. 76.20 (2010): 6853–6863.
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2009

Auguet, J. C., et al. "Potential effect of freshwater virus on the structure and activity of bacterial communities in the Marennes-Oleron Bay (France)." Microb Ecol. 57.2 (2009): 295–306.
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2008

Auguet, J. C., and E. O. Casamayor. "A hotspot for cold crenarchaeota in the neuston of high mountain lakes." Environ Microbiol. 10.4 (2008): 1080–1086.
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Auguet, J. C., et al. "Fingerprinting the genetic diversity of the biotin carboxylase gene (accC) in aquatic ecosystems as a potential marker for studies of carbon dioxide assimilation in the dark." Environ Microbiol. 10.10 (2008): 2527–2536.
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2006

Auguet, J. C., H. Montanie, and P. Lebaron. "Structure of virioplankton in the Charente Estuary (France): transmission electron microscopy versus pulsed field gel electrophoresis." Microb Ecol. 51.2 (2006): 197–208.
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Degre, D., et al. "Comparative analysis of the food webs of two intertidal mudflats during two seasons using inverse modelling: Aiguillon Cove and Brouage Mudflat, France." Estuarine Coastal and Shelf Science. 69.1-2 (2006): 107–124.
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2005

Auguet, J. C., et al. "Dynamic of virioplankton abundance and its environmental control in the Charente estuary (France)." Microb Ecol. 50.3 (2005): 337–349.
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MARBEC MARine Biodiversity, Exploitation and Conservation, est une unité de recherche qui regroupe des personnels de 4 organismes : l’IRD, l’Ifremer, l’UM et le CNRS. Son objectif est l’étude de la biodiversité marine des écosystèmes lagunaires, côtiers et hauturiers à différents niveaux d’intégration, depuis les aspects moléculaires, individuels, populationnels et communautaires, et des usages de cette biodiversité par l’Homme. Nous rejoindre