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Valerie Michotey

56
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Presentation

- **Director of the Mediterranean Institute of Oceanography, Aix Marseille Univ, Univ Toulon, CNRS, IRD** - 2014- 2021 Deputy director of MIO - 2018-2021 Deputy director oresearch of OSU Institut Pytheas - 2011-2019 Head of the Marine Biology and ecology speciality of Marine sciences master , Aix Marseilel University - 2000-2011 i Head of the Marine sciences speciality of Enevironnmental Bachelor , Aix Marseille university 2007 Professor Aix- Marseille University 1994 Assistant Professor Aix- Marseille University 1994 Post Doctorat 2- CEA Grenoble 1992-93 Post Doctorat 1- UCSD La Jolla, California, USA 1992 PhD Rennes University 1989 Master Microbial Ecology, Lyon I University 1989 Ingenieer Biochemist INSA Lyon
- **2021- Directrice de l'Institut Méditerranéen d'Océanologie (MIO) Marseille Univ, Univ Toulon, CNRS, IRD, UMR 2794-CNRS, 325-IRD** - 2014- 2021 Directrice adjoint du MIO - 2018-2021 Directrice adjoint recherche OSU Institut Pytheas - 2011-2019 Responsable du parcours Biologie écologie marine du Master Science de la mer/Océanographie, Aix Marseille Université - 2000-2011 Responsable du parcours Mer de la licence SVT/SNTE, Aix Marseille Université 2007 Professeure des Universités en écologie microbienne marine, Aix- Marseille Université 1994 Maitre de Conférences , Université d'Aix Marseille II 1994 Post Doctorat 2- CEA Grenoble 1992-93 Post Doctorat 1- UCSD La Jolla, California, USA 1992 Doctorat Université de Rennes I 1989 DEA Ecologie Microbienne Université de Lyon 1989 Ingénieur biochimiste INSA Lyon

Publications

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Predominant heterotrophic diazotrophic bacteria are involved in Sargassum proliferation in the great Atlantic Sargassum Belt

M Léger-Pigout , E Navarro , F Menard , S Ruitton , F Le Loc’h
ISME Journal, 2024, ⟨10.1093/ismejo/wrad026⟩
Journal articles hal-04421726v1
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Benthic oxygen dynamics and implication for the maintenance of chronic hypoxia and ecosystem degradation in the Berre lagoon (France)

Sylvain Rigaud , Bruno Deflandre , Christian Grenz , Florian Cesbron , Lara Pozzato
Estuarine, Coastal and Shelf Science, 2021, 258, pp.107437. ⟨10.1016/j.ecss.2021.107437⟩
Journal articles hal-03249104v1
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Rapid Spread of the Invasive Brown Alga Rugulopteryx okamurae in a National Park in Provence (France, Mediterranean Sea)

Sandrine Ruitton , A. Blanfuné , Charles F. Boudouresque , Dorian Guillemain , Valerie Michotey
Water, 2021, 13 (16), pp.2306. ⟨10.3390/w13162306⟩
Journal articles hal-03342953v1
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Rapid Spread of the Invasive Brown Alga Rugulopteryx okamurae in a National Park in Provence (France, Mediterranean Sea)

Sandrine Ruitton , Aurelie Blanfuné , Charles F. Boudouresque , Dorian Guillemain , Valerie Michotey
Water, 2021, 13 (16), pp.2306. ⟨10.3390/w13162306⟩
Journal articles hal-03342562v1
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In situ observations and modelling revealed environmental factors favouring occurrence of Vibrio in microbiome of the pelagic Sargassum responsible for strandings

Valerie Michotey , Aurelie Blanfuné , Cristele Chevalier , Marc Garel , Frédéric Diaz
Science of the Total Environment, 2020, 748, pp.141216. ⟨10.1016/j.scitotenv.2020.141216⟩
Journal articles hal-02933822v1
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Evidence of high N2 fixation rates in the temperate northeast Atlantic

Debany Fonseca-Batista , Xuefeng Li , Virginie Riou , Valerie Michotey , Florian Deman
Biogeosciences, 2019, 16 (5), pp.999-1017. ⟨10.5194/bg-16-999-2019⟩
Journal articles hal-02066554v1
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Salinity shifts in marine sediment: Importance of number of fluctuation rather than their intensities on bacterial denitrifying community

Imen Zaghmouri , Valerie Michotey , Fabrice Armougom , Sophie Guasco , Patricia Bonin
Marine Pollution Bulletin, 2018, 130, pp.76 - 83. ⟨10.1016/j.marpolbul.2018.03.020⟩
Journal articles hal-01735881v1
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The nature of electron acceptor (MnIV/NO3) triggers differential expression of genes associated with stress and ammonium limitation responses in Shewanella algae C6G3

Axel Aigle , Patricia Bonin , Nicolas Fernandez -Nunez , Béatrice B. Loriod , Sophie Guasco
FEMS Microbiology Letters, inPress, ⟨10.1093/femsle/fny068⟩
Journal articles hal-01766209v1
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Physiological and transcriptional approaches reveal connection between nitrogen and manganese cycles in Shewanella algae C6G3

Axel Aigle , Patricia Bonin , Chantal Iobbi-Nivol , Vincent Méjean , Valerie Michotey
Scientific Reports, 2017, Scientific Reports 7, 7, ⟨10.1038/srep44725⟩
Journal articles hal-01493279v1

Bacteria as part of bioluminescence emission at the deep ANTARES station (North-Western Mediterranean Sea) during a one-year survey

Severine Martini , Valerie Michotey , Laurie Casalot , Patricia Bonin , Sophie Guasco
Deep Sea Research, 2016, 116, pp.33-40. ⟨10.1016/j.dsr.2016.07.014⟩
Journal articles hal-01408722v1

Metatranscriptomes of oil-contaminated marine coastal sediment affected by oil addition and/or by the bioturbating activity of the marine polychaete Hediste diversicolor: Who are the microbial players?

Cécile Militon , Alexandre Atkinson , Valerie Michotey , Celine Jeziorski , Cristiana Cravo-Laureau
Marine Genomics, 2016, 29, pp.55-59. ⟨10.1016/j.margen.2016.06.006⟩
Journal articles hal-01408732v1

Coupling of bacterial nitrification with denitrification and anammox supports N removal in intertidal sediments (Arcachon Bay, France)

Sheryl Fernandes , Cedric Javanaud , Valerie Michotey , Sophie Guasco , Pierre Anschutz
Estuarine, Coastal and Shelf Science, 2016, 179, pp.39-50. ⟨10.1016/j.ecss.2015.10.009⟩
Journal articles hal-01408734v1
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Substrates specialization in lipid compounds and hydrocarbons of Marinobacter genus.

Patricia Bonin , Christophe Vieira , Régis Grimaud , Cécile Militon , Philippe Cuny
Environmental Science and Pollution Research, 2015, 22 (20), pp.15347-15359. ⟨10.1007/s11356-014-4009-y⟩
Journal articles hal-01201711v1

Anaerobic nitrification-denitrification mediated by Mn-oxides in meso-tidal sediments: Implications for N-2 and N2O production

Sheryl Fernandes , Cedric Javanaud , Axel Aigle , Valerie Michotey , Sophie Guasco
Journal of Marine Systems, 2015, 144, pp.1-8. ⟨10.1016/j.jmarsys.2014.11.011⟩
Journal articles hal-01157960v1

Use of dispersant in mudflat oil-contaminated sediment: behavior and effects of dispersed oil on micro- and macrobenthos.

Philippe Cuny , Franck Gilbert , Cécile Militon , Georges Stora , Patricia Bonin
Environmental Science and Pollution Research, 2015, 22 (20), pp.15370-15376. ⟨10.1007/s11356-015-4800-4⟩
Journal articles hal-01201710v1
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Draft-genome sequence of Shewanella algae strain C6G3

Axel Aigle , Valerie Michotey , Patricia Bonin
Standards in Genomic Sciences, 2015, 43 (10), pp.10.1186/s40793-015-0022-0. ⟨10.1186/s40793-015-0022-0⟩
Journal articles hal-01194459v1

Ecological significance of Synergistetes in the biological treatment of tuna cooking wastewater by an anaerobic sequencing batch reactor.

Cécile Militon , Olfa Hamdi , Valerie Michotey , Marie-Laure Fardeau , Bernard Ollivier
Environmental Science and Pollution Research, 2015, pp.2015 Jul 22. ⟨10.1007/s11356-015-4973-x⟩
Journal articles hal-01201712v1

Effect of physical sediments reworking on hydrocarbon degradation and bacterial community structure in marine coastal sediments.

Robert Duran , Patricia Bonin , Ronan Jezequel , Karine Dubosc , Claire Gassie
Environmental Science and Pollution Research, 2015, 22 (20), pp.15248-15259. ⟨10.1007/s11356-015-4373-2⟩
Journal articles hal-01201709v1

Dynamic of bacterial communities attached to lightened phytodetritus

Morgan Petit , Patricia Bonin , Remi Amiraux , Valerie Michotey , Sophie Guasco
Environmental Science and Pollution Research, 2015, 22 (18), pp.13681-92. ⟨10.1007/s11356-015-4209-0⟩
Journal articles hal-01201708v1

Bacterial diversity in relatively pristine and anthropogenically-influenced mangrove ecosystems (Goa, India).

Sheryl Fernandes , David L Kirchman , Valerie Michotey , Patricia Bonin , P A Lokabharathi
Brazilian Journal of Microbiology, 2014, 45 (4), pp.1161-71. ⟨10.1590/S1517-83822014000400006⟩
Journal articles hal-01166877v1

Denitrification activity is closely linked to the total ambient Fe concentration in mangrove sediments of Goa, India

S Fernandes , M Gonsalves , Valerie Michotey , Patricia Bonin , P Lokabharathi
Estuarine, Coastal and Shelf Science, 2013, 131, pp.64-74. ⟨10.1016/j.ecss.2013.08.008⟩
Journal articles hal-00872344v1

Trends in salinity and inorganic nitrogen compounds in the Berre lagoon (1994-2011) bacterial activities and nitrogen budgets

Imen Zaghmouri , Valerie Michotey , Sophie Guasco , Patrick Raimbault , Nicole Garcia
Marine Pollution Bulletin, 2013, 67, pp.55-65. ⟨10.1016/j.marpolbul.2012.11.046⟩
Journal articles hal-00796981v1
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Genome sequence of the marine bacterium Marinobacter hydrocarbonoclasticus SP17, which forms biofilms on hydrophobic organic compounds

R. Grimaud , J.-F. Ghiglione , Christine Cagnon , Béatrice Lauga , P.-J. Vaysse
Journal of Bacteriology, 2012, 194 (13), pp.3539-3540. ⟨10.1128/JB.00500-12⟩
Journal articles hal-01643936v1
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Nitrogen-limited mangrove ecosystems conserve N through dissimilatory nitrate reduction to ammonium

Sheryl Fernandes , Patricia Bonin , Valerie Michotey , Nicole Garcia , P. A. Lokabharathi
Scientific Reports, 2012, 2, pp.419. ⟨10.1038/srep00419⟩
Journal articles hal-00714213v1

Denitrification prevails over anammox in tropical mangrove sediments (Goa, India)

Sheryl Fernandes , Valerie Michotey , Sophie Guasco , Patricia Bonin , P. A. Loka Bharathi
Marine Environmental Research, 2012, 74, pp.9-19. ⟨10.1016/j.marenvres.2011.11.008⟩
Journal articles hal-00700304v1

Desulfosoma profundi sp nov., a thermophilic sulfate-reducing bacterium isolated from a deep terrestrial geothermal spring in France

Patrick Gregoire , Marie Laure Fardeau , Sophie Guasco , Joel Lagiere , Jean Cambar
Antonie van Leeuwenhoek, 2012, 101, pp.595-602. ⟨10.1007/s10482-011-9675-x⟩
Journal articles hal-00690553v1

Spatio-temporal diversity of free-living and particle-attached prokaryotes in the tropical lagoon of Ahe atoll (Tuamotu Archipelago) and its surrounding oceanic waters

Valerie Michotey , Sophie Guasco , Dominique Boeuf , Nicola Morezzi , Brice Durieu
Marine Pollution Bulletin, 2012, 65 (10), pp.525-537. ⟨10.1016/j.marpolbul.2012.01.009⟩
Journal articles hal-00739805v1

Anaerobic ammonium oxidation mediated by Mn-oxides: from sediment to strain level

Cedric Javanaud , Valerie Michotey , Sophie Guasco , Nicole Garcia , Pierre Anschutz
Research in Microbiology, 2011, 162, pp.848-857. ⟨10.1016/j.resmic.2011.01.011⟩
Journal articles hal-00725010v1

The chemical-in-mu well: a high-throughput technique for identifying solutes eliciting a chemotactic response in motile bacteria

Joshua Armitano , Claudine Baraquet , Valerie Michotey , Vincent Mejean , Cecile Jourlin-Castelli
Research in Microbiology, 2011, 162, pp.934-938. ⟨10.1016/j.resmic.2011.03.001⟩
Journal articles hal-00725012v1

Isolation and characterization of Thermanaerothrix daxensis gen. nov., sp nov., a thermophilic anaerobic bacterium pertaining to the phylum "Chloroflexi", isolated from a deep hot aquifer in the Aquitaine Basin

Patrick Gregoire , Marie Laure Fardeau , Manon Bartoli , Sophie Guasco , Francette Hamaide
Systematic and Applied Microbiology, 2011, 34, pp.494-497. ⟨10.1016/j.syapm.2011.02.004⟩
Journal articles hal-00690513v1

Caldilinea tarbellica sp nov., a filamentous, thermophilic, anaerobic bacterium isolated from a deep hot aquifer in the Aquitaine Basin

Patrick Gregoire , Malek Bohli , Jean Luc Cayol , Manon Bartoli , Sophie Guasco
International Journal of Systematic and Evolutionary Microbiology, 2011, 61 (Part6), pp.1436-1441. ⟨10.1099/ijs.0.025676-0⟩
Journal articles hal-00752944v1

Isolation and characterization of Thermanaerothrix daxensis gen. nov., sp. nov., a thermophilic anaerobic bacterium pertaining to the phylum "Chloroflexi", isolated from a deep hot aquifer in the Aquitaine Basin.

Patrick Gregoire , Marie Laure Fardeau , Manon Joseph , Sophie Guasco , F Hamaide
Systematic and Applied Microbiology, 2011, 34 (7), pp.494-7
Journal articles hal-00752926v1

Thalassobaculum salexigens sp. nov., a new member of the family Rhodospirillaceae from the NW Mediterranean Sea, and emended description of the genus Thalassobaculum

Laurent Urios , Valerie Michotey , Laurent Intertaglia , Françoise Lesongeur , Philippe Lebaron
International Journal of Systematic and Evolutionary Microbiology, 2010, 60 (Pt 1), pp.209-213. ⟨10.1099/ijs.0.011460-0⟩
Journal articles hal-00617772v1

Denitrification : An important Pathway for Nitrous Oxide Production in Tropical Mangrove Sediments (Goa, India)

Sheryl Oliveira Fernandes , P.A. Loka Bharathi , Patricia Bonin , Valerie Michotey
Journal of Environmental Quality, 2010, 39, pp.1507-1516. ⟨10.2134/jeq2009.0477⟩
Journal articles hal-00506441v1

Caldinitratiruptor microaerophilus, gen.nov., sp. nov. isolated from a French hot spring (Chaudes-Aigues, Massif Central) : a novel cultivated facultative microaerophilic anaerobic thermophile pertaining to the Symbiobacterium branch within the Firmicutes

Marie-Laure Fardeau , Vanessa Barsotti , Jean-Luc Cayol , Sophie Guasco , Valerie Michotey
Extremophiles, 2010, 14, pp.241-247. ⟨10.1007/s00792-010-0302-y⟩
Journal articles hal-00506433v1

Formation of pristane from a-tocopherol under simulated anoxic sedimentary conditions : A combination of biotic and abiotic degradative processes

Jean-Francois Rontani , Mina Nassiry , Valerie Michotey , Sophie Guasco , Patricia Bonin
Geochimica et Cosmochimica Acta, 2009, 74, pp.252-263. ⟨10.1016/j.gca.2009.09.028⟩
Journal articles hal-00506418v1

Seasonal variation in di-nitrogen fluxes and associated processes (denitrification, anammox and nitrogen fixation) in sediment subject to shellfish farming influences

Laura Minjeaud , Valerie Michotey , Nicole Garcia , Patricia Bonin
Aquatic Sciences - Research Across Boundaries, 2009, pp.1-11. ⟨10.1007/s00027-009-0100-8⟩
Journal articles hal-00412229v1

Nisaea denitrificans gen.nov., sp.nov. and Nisaea nitrireducens sp. nov., two novel members of the class Alphaproteobacteria from the Mediterranean Sea

Laurent Urios , Valerie Michotey , Laurent Intertaglia , Françoise Lesongeur , Philippe Lebaron
International Journal of Systematic and Evolutionary Microbiology, 2008, 58, pp.2336-2341. ⟨10.1099/ijs.0.64592-0⟩
Journal articles hal-00362716v1

Nisaea denitrificans gen. nov., sp. nov. and Nisaea nitritireducens sp. nov., two novel members of the class Alphaproteobacteria from the Mediterranean Sea

Laurent Urios , Valerie Michotey , Laurent Intertaglia , Françoise Lesongeur , Philippe Lebaron
International Journal of Systematic and Evolutionary Microbiology, 2008, 58 (Pt 10), pp.2336-2341. ⟨10.1099/ijs.0.64592-0⟩
Journal articles hal-00617742v1

Nitrogen fluxes from marine sediments : quantification of the associated co-occurring bacterial processes

Laura Minjeaud , Patricia Bonin , Valerie Michotey
Biogeochemistry, 2008, 90, pp.141-157. ⟨10.1007/s10533-008-9241-4⟩
Journal articles hal-00362536v1

Seasonal and diel distributions of denitrifying and bacterial communities in a hypersaline microbial mat (Camargue, France)

Christelle Desnues , Valerie Michotey , Andrea Wieland , Cui Zhizang , Aude Fourçans
Water Research, 2007, 41, pp.3407-3419
Journal articles hal-00165666v1

Effects of spilled oil on bacterial communities of Mediterranean coastal anoxic sediments chronically subjected to oil hydrocarbon contamination

G. Miralles , David Nerini , C. Manté , M. Acquaviva , P. Doumenq
Microbial ecology, 2007, 54 (4), pp.646-661. ⟨10.1007/s00248-007-9221-6⟩
Journal articles hal-02590055v1

Effects of spilled Oil on Bacterial Communities of mediterranean Coastal Anoxic Chronically Subjected to oil Hydrocarbon Contamination

Gilles Miralles , David Nerini , Claude Manté , Monique Acquaviva , Pierre Doumenq
Microbial ecology, 2007, pp.1-16. ⟨10.1007/s00248-007-9221-6⟩
Journal articles hal-00169724v1

Nitrogen budget in a microbial mat of Camargue (South of France)

Patricia Bonin , Valerie Michotey
Marine Ecology Progress Series, 2006, XXX, pp.XX Xx
Journal articles hal-00087392v1

Molecular, Biochemical, and Physiological Approaches for Understanding the Ecology of Denitrification

Christelle Goréguès , Valerie Michotey , Patricia Bonin
Microbial ecology, 2005, 49 (2), pp.198-208
Journal articles hal-02007308v1

Molecular, Biochemical and Physiological Approaches for Understanding the Ecology of Denitrification

Christèle Goregues , Valerie Michotey , Patricia Bonin
Microbial ecology, 2005, 49, pp.198-208
Journal articles hal-00084748v1

The anaerobic hydrocarbon biodegrading bacteria: An overview

Patricia Bonin , Valerie Michotey , Cristiana Cravo-Laureau , Agnès Hirschler-Réa
Ophelia, 2004, 58 (3), pp.243-254. ⟨10.1080/00785236.2004.10410232⟩
Journal articles hal-01631864v1

Isolation of hydrocarbonoclastic denitrifying bacteria from berre microbial mats

C Goregues , Valerie Michotey , Patricia Bonin
Ophelia, 2004, 58, pp.263-270
Journal articles hal-00796815v1

Isolation of hydrocarbonoclastic denitrifying bacteria from berre microbial mats

Christelle Goréguès , Valerie Michotey , Patricia Bonin
Ophelia, 2004, 58 (3), pp.263-270
Journal articles hal-02008690v1

Aerobic and anaerobic metabolism of 6,10,14-trimethylpentadecan-2-one by a denitrifying bacterium isolated from marine sediments

Jean-Francois Rontani , Mj Gilewicz , Valerie Michotey , Tl Zheng , Patricia Bonin
Applied and Environmental Microbiology, 1997, 63, pp.636-643
Journal articles hal-00706691v1
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Evidence for anaerobic bacterial processes in the water column: denitrification and dissimilatory nitrate ammonification in the northwestern Mediterranean Sea

Valerie Michotey , Patricia Bonin
Marine Ecology Progress Series, 1997, 160, pp.47-56
Journal articles hal-00708672v1

Isolation and characterization of a marine bacterium capable of utilizing 2-methylphenanthrene

M Gilewicz , N Nihmatuzaron , T Nadalig , H Budzinski , Pierre Doumenq
Applied Microbiology and Biotechnology, 1997, 48, pp.528-533
Journal articles hal-00707330v1

Characterisation of the mcpA and mcpB genes capable of encoding methyl-accepting type chemoreceptors in Rhodobacter capsulatus

Valerie Michotey , B Toussaint , P Richaud , Pm Vignais
Gene, 1996, 170, pp.73-76
Journal articles hal-00709001v1

THE GLOBAL REGULATORY PROTEIN FRUR MODULATES THE DIRECTION OF CARBON FLOW IN ESCHERICHIA-COLI

Tm Ramseier , S Bledig , Valerie Michotey , R Feghali , Mh Saier
Molecular Microbiology, 1995, 16, pp.1157-1169
Journal articles hal-00725014v1

EFFECT OF THE FRUR REGULATOR ON TRANSCRIPTION OF THE PTS OPERON IN ESCHERICHIA-COLI

S Ryu , Tm Ramseier , Valerie Michotey , Mh Saier , S Garges
Journal of Biological Chemistry, 1995, 270, pp.2489-2496
Journal articles hal-00709149v1

NOVEL PROTEINS OF THE PHOSPHOTRANSFERASE SYSTEM ENCODED WITHIN THE RPON OPERON OF ESCHERICHIA-COLI - ENZYME IIA(NTR) AFFECTS GROWTH ON ORGANIC NITROGEN AND THE CONDITIONAL LETHALITY OF AN ERA(TS) MUTANT

Bs Powell , Dl Court , T Inada , Y Nakamura , Valerie Michotey
Journal of Biological Chemistry, 1995, 270, pp.4822-4839
Journal articles hal-00709150v1