Valerie Michotey

Présentation

2021- 2028 Directrice de l'Institut Méditerranéen d'Océanologie (MIO), AMU, Univ Toulon, CNRS (UMR 2794), IRD (UMR 325)

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 (AMU)

2000-2011 Responsable de la mention SNTE ou du parcours Mer de la licence SVT, Aix Marseille Université (AMU)

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

Article dans une revue (59)

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’het al. The International Society of Microbiologial Ecology Journal, 2024, ⟨10.1093/ismejo/wrad026⟩ Article dans une revue hal-04421726v1
Morphological and Molecular Characters Differentiate Common Morphotypes of Atlantic Holopelagic Sargassum Amy Siuda,Aurélie Blanfuné,Skye Dibner,Marc Verlaque,Charles-François Boudouresqueet al. Journal of Phycology, 2024, 4 (2), pp.256-275. ⟨10.3390/phycology4020014⟩ Article dans une revue mnhn-04572926v1
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 Michoteyet al. Water, 2021, 13 (16), pp.2306. ⟨10.3390/w13162306⟩ Article dans une revue hal-03342953v1
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 Pozzatoet al. Estuarine, Coastal and Shelf Science, 2021, 258, pp.107437. ⟨10.1016/j.ecss.2021.107437⟩ Article dans une revue hal-03249104v1
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 Diazet al. Science of the Total Environment, 2020, 748, pp.141216. ⟨10.1016/j.scitotenv.2020.141216⟩ Article dans une revue hal-02933822v1
Evidence of high N2 fixation rates in the temperate northeast Atlantic Debany Fonseca-Batista,Xuefeng Li,Virginie Riou,Valerie Michotey,Florian Demanet al. Biogeosciences, 2019, 16 (5), pp.999-1017. ⟨10.5194/bg-16-999-2019⟩ Article dans une revue hal-02066554v1
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 Guascoet al. FEMS Microbiology Letters, In press, ⟨10.1093/femsle/fny068⟩ Article dans une revue hal-01766209v1
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⟩ Article dans une revue hal-01735881v1
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⟩ Article dans une revue 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 Guascoet al. Deep Sea Research, 2016, 116, pp.33-40. ⟨10.1016/j.dsr.2016.07.014⟩ Article dans une revue hal-01408722v1
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 Anschutzet al. Estuarine, Coastal and Shelf Science, 2016, 179, pp.39-50. ⟨10.1016/j.ecss.2015.10.009⟩ Article dans une revue hal-01408734v1
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-Laureauet al. Marine Genomics, 2016, 29, pp.55-59. ⟨10.1016/j.margen.2016.06.006⟩ Article dans une revue istex hal-01408732v1
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 Guascoet al. Journal of Marine Systems, 2015, 144, pp.1-8. ⟨10.1016/j.jmarsys.2014.11.011⟩ Article dans une revue hal-01157960v1
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 Ollivieret al. Environmental Science and Pollution Research, 2015, pp.2015 Jul 22. ⟨10.1007/s11356-015-4973-x⟩ Article dans une revue hal-01201712v1
Dynamic of bacterial communities attached to lightened phytodetritus Morgan Petit,Patricia Bonin,Remi Amiraux,Valerie Michotey,Sophie Guascoet al. Environmental Science and Pollution Research, 2015, 22 (18), pp.13681-92. ⟨10.1007/s11356-015-4209-0⟩ Article dans une revue hal-01201708v1
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 Gassieet al. Environmental Science and Pollution Research, 2015, 22 (20), pp.15248-15259. ⟨10.1007/s11356-015-4373-2⟩ Article dans une revue hal-01201709v1
Substrates specialization in lipid compounds and hydrocarbons of Marinobacter genus. Patricia Bonin,Christophe Vieira,Régis Grimaud,Cécile Militon,Philippe Cunyet al. Environmental Science and Pollution Research, 2015, 22 (20), pp.15347-15359. ⟨10.1007/s11356-014-4009-y⟩ Article dans une revue hal-01201711v1
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⟩ Article dans une revue hal-01194459v1
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 Boninet al. Environmental Science and Pollution Research, 2015, 22 (20), pp.15370-15376. ⟨10.1007/s11356-015-4800-4⟩ Article dans une revue hal-01201710v1
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⟩ Article dans une revue hal-01166877v1
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 Garciaet al. Marine Pollution Bulletin, 2013, 67, pp.55-65. ⟨10.1016/j.marpolbul.2012.11.046⟩ Article dans une revue istex hal-00796981v1
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⟩ Article dans une revue istex hal-00872344v1
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 Cambaret al. Antonie van Leeuwenhoek, 2012, 101, pp.595-602. ⟨10.1007/s10482-011-9675-x⟩ Article dans une revue istex 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 Durieuet al. Marine Pollution Bulletin, 2012, 65 (10), pp.525-537. ⟨10.1016/j.marpolbul.2012.01.009⟩ Article dans une revue istex hal-00739805v1
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. Vaysseet al. Journal of Bacteriology, 2012, 194 (13), pp.3539-3540. ⟨10.1128/JB.00500-12⟩ Article dans une revue hal-01643936v1
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⟩ Article dans une revue 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⟩ Article dans une revue istex hal-00700304v1
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⟩ Article dans une revue istex hal-00725012v1
Isolation and characterization of Thermanaerothrix daxensis gen. nov., sp nov., a thermophilic anaerobic bacterium pertaining to the phylum &quot;Chloroflexi&quot;, isolated from a deep hot aquifer in the Aquitaine Basin Patrick Gregoire,Marie Laure Fardeau,Manon Bartoli,Sophie Guasco,Francette Hamaideet al. Systematic and Applied Microbiology, 2011, 34, pp.494-497. ⟨10.1016/j.syapm.2011.02.004⟩ Article dans une revue istex hal-00690513v1
Isolation and characterization of Thermanaerothrix daxensis gen. nov., sp. nov., a thermophilic anaerobic bacterium pertaining to the phylum &quot;Chloroflexi&quot;, isolated from a deep hot aquifer in the Aquitaine Basin. Patrick Gregoire,Marie Laure Fardeau,Manon Joseph,Sophie Guasco,F Hamaideet al. Systematic and Applied Microbiology, 2011, 34 (7), pp.494-7 Article dans une revue hal-00752926v1
Anaerobic ammonium oxidation mediated by Mn-oxides: from sediment to strain level Cedric Javanaud,Valerie Michotey,Sophie Guasco,Nicole Garcia,Pierre Anschutzet al. Research in Microbiology, 2011, 162, pp.848-857. ⟨10.1016/j.resmic.2011.01.011⟩ Article dans une revue istex hal-00725010v1
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 Guascoet al. International Journal of Systematic and Evolutionary Microbiology, 2011, 61 (Part6), pp.1436-1441. ⟨10.1099/ijs.0.025676-0⟩ Article dans une revue hal-00752944v1
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⟩ Article dans une revue hal-00506441v1
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⟩ Article dans une revue hal-00617772v1
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 Michoteyet al. Extremophiles, 2010, 14, pp.241-247. ⟨10.1007/s00792-010-0302-y⟩ Article dans une revue istex hal-00506433v1
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⟩ Article dans une revue istex hal-00412229v1
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⟩ Article dans une revue istex hal-00506418v1
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⟩ Article dans une revue hal-00362716v1
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⟩ Article dans une revue istex hal-00362536v1
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⟩ Article dans une revue hal-00617742v1
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 Fourçanset al. Water Research, 2007, 41, pp.3407-3419 Article dans une revue 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. Doumenqet al. Microbial ecology, 2007, 54 (4), pp.646-661. ⟨10.1007/s00248-007-9221-6⟩ Article dans une revue istex 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 Doumenqet al. Microbial ecology, 2007, pp.1-16. ⟨10.1007/s00248-007-9221-6⟩ Article dans une revue istex 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 Article dans une revue 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 Article dans une revue 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 Article dans une revue hal-00084748v1
Isolation of hydrocarbonoclastic denitrifying bacteria from berre microbial mats C Goregues,Valerie Michotey,Patricia Bonin Ophelia, 2004, 58, pp.263-270 Article dans une revue hal-00796815v1
Isolation of hydrocarbonoclastic denitrifying bacteria from berre microbial mats Christelle Goréguès,Valerie Michotey,Patricia Bonin Ophelia, 2004, 58 (3), pp.263-270 Article dans une revue hal-02008690v1
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⟩ Article dans une revue hal-01631864v1
Aerobic and anaerobic metabolism of squalene by a denitrifying bacterium isolated from marine sediment Abdelkrim Mouzdahir,Jean-Francois Rontani,Valerie Michotey,Patricia Bonin Archives of Microbiology, 2002, 178 (4), pp.279-287. ⟨10.1007/s00203-002-0457-8⟩ Article dans une revue istex hal-04546347v1
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 Article dans une revue hal-00708672v1
Isolation and characterization of a marine bacterium capable of utilizing 2-methylphenanthrene M Gilewicz,N Nihmatuzaron,T Nadalig,H Budzinski,Pierre Doumenqet al. Applied Microbiology and Biotechnology, 1997, 48, pp.528-533 Article dans une revue hal-00707330v1
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 Boninet al. Applied and Environmental Microbiology, 1997, 63, pp.636-643 Article dans une revue hal-00706691v1
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 Article dans une revue hal-00709001v1
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 Michoteyet al. Journal of Biological Chemistry, 1995, 270, pp.4822-4839 Article dans une revue hal-00709150v1
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 Article dans une revue 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 Article dans une revue hal-00709149v1
PHI-AAU2, A TEMPERATE BACTERIOPHAGE SPECIFIC FOR ARTHROBACTER-AUREUS, WHOSE INTEGRATIVE FUNCTIONS WORK IN OTHER CORYNEBACTERIA Lemarrec, C,Valerie Michotey,Blanco, C,Annie Trautwetter Microbiology, 1994, 140 (11), pp.3071-3077 Article dans une revue hal-04983205v1
NOVEL PHOSPHOTRANSFERASE SYSTEM GENES REVEALED BY BACTERIAL GENOME ANALYSIS - UNIQUE, PUTATIVE FRUCTOSE-SPECIFIC AND GLUCOSIDE-SPECIFIC SYSTEMS Jonathan Reizer,Valerie Michotey,A Reizer,Mh Saier Protein Science, 1994, 3 (3), pp.440-450 Article dans une revue hal-04983218v1