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Zentralinstitut für Ernährungs- und Lebensmittelforschung (ZIEL)

Abteilung Mikrobiologie
Technische Universität München
Weihenstephaner Berg 3
D-85350 Freising

Dr. Mareike Wenning

Phone: +49-8161-71 2257
Fax: +49-8161-71 4492
E-Mail: mareike.wenning<at>


Research career

Since 2004  Postdoctoral scientist at ZIEL, Microbiology Unit (Prof. Dr.Siegfried Scherer)
                    TU München
                    Research focus: Biodiversity of microbial populations in industrial habitats
                    Head of the consulting and analytical service department for microbiological
                    production problems in the food industry

2004            Doctoral degree on the
                    "Identification of microorganisms in food stuff by Fourier-transform infrared 
                    (FT-IR) microspectroscopy"

2000 - 2004 Doctoral researcher at ZIEL, Microbiology Unit (Prof. S. Scherer), 
                    TU München

2000            Diploma in nutrition science at TU München
                    Diploma thesis: "pH-stress-response in 
Corynebacterium ammoniagenes"     


Spokesperson of joined Fachgruppe "Food Microbiology and Hygiene" of the Association for General and Applied Microbiology (VAAM) and Deutsche Gesellschaft für Hygiene und Mikrbiologie (DGHM)

Member of IDF Standing Committee on Microbiological Hygiene (SCMH) of the International Dairy Federation (IDF)

List of publications

Stoeckel M, Lidolt M, Stressler T, Fischer L, Wenning M and Hinrichs J (2016). Heat stability of endogenous milk plasmin and peptidases from Pseudomonas: a challenge in the production of UHT milk products. Int Dairy J, accepted.

Lagkouvardos I, Pukall R, Abt B, Foesel BU, Meier-Kolthoff JP, Kumar N, Bresciani A, Martínez I, Just S, Ziegler C, Brugiroux S, Garzetti D, Wenning M, Bui TPN, Wang J, Hugenholtz F, Plugge CM, Peterson DA, Hornef MW, Baines JF, Smidt H, Walter J, Kristiansen K, Nielsen HB, Haller D, Overmann J, Stecher B and Clavel T (2016) The Mouse Intestinal Bacterial Collection (miBC) provides host-specific insight into cultured diversity and functional potential of the gut microbiota. Nat Microbiol, accepted.

Huptas C, Scherer S and Wenning M (2016) Optimized Illumina PCR-free Library Preparation for bacterial whole genome sequencing and analysis of factors influencing de novo assembly, BMC Research Notes 9: 269.

von Neubeck M, Huptas C, Glück C, Krewinkel M, Stoeckel M, Stressler T, Fischer L, Hinrichs J, Scherer S and Wenning M (2016) Pseudomonas helleri sp. nov. and Pseudomonas weihenstephanensis sp. nov., isolated from raw cow’s milk. Int J Syst Evol Microbiol, 66: 1163–1173.

Stoeckel M, Friedl N, Achberger V, Lidolt M, Glück C, Krewinkel M, Stressler T, von Neubeck M, Wenning M, Scherer S, Fischer L and Hinrichs J (2016) Growth of Pseudomonas weihenstephanensis, Pseudomonas proteolytica and Pseudomonas sp. in raw milk: Impact of residual heat-stable enzyme activity on stability of UHT milk during shelf-life. Int Dairy J 59: 20-28.

Glück C, Rentschler E, Krewinkel M, Merz M, von Neubeck M, Wenning M,  Scherer S, Stoeckel M, Hinrichs J,  Stressler T and Fischer L (2016) Thermostability of peptidases secreted by raw milk associated microorganisms. Int Dairy J 56: 186-197.

Kabisch J, Erl-Höning C, Wenning M, Böhnlein C, Gareis M, Pichner R (2016) Spoilage of vacuum-packed beef by the yeast Kazachstania psychrophila. Food Microbiol 53: 15-23.

von Neubeck M, Baur C, Krewinkel M, Stoeckel M, Kranz B, Stressler T, Fischer L, Hinrichs J, Scherer S and Wenning M (2015) Biodiversity of refrigerated raw milk microbiota and their enzymatic spoilage potential. Int J Food Microbiol 211: 57–65.

Krewinkel M, Baur C, Kranz B, von Neubeck M, Wenning M, Scherer S, Stoeckel M, Hinrichs J, and Fischer L (2016) A sensitive and robust method for direct determination of lipolytic activity in natural milk environment. Food Anal Methods 9: 646-655.

Müller A, Huptas C, Wenning M, Schmidt H and Weiss A (2015) Draft Genome Sequence of Staphylococcus carnosus subsp. utilis LTH 7013, Isolated from South Tyrolean Ham. Genome Announc 14: e00456-15.

Baur C, Krewinkel M, Kutzli I, Kranz B, von Neubeck M, Huptas C, Wenning M, Scherer S, Stoeckel M, Hinrichs J, Stressler T and Fischer L (2015) Isolation and characterisation of a heat-resistant peptidase from Pseudomonas panacis withstanding general UHT processes. Int Dairy J 49: 46-55.

Baur C, Krewinkel M, Kutzli I, Kranz B, von Neubeck M, Wenning M, Scherer S, Stoeckel M, Hinrichs J, Stressler T and Fischer L (2015) Quantification of the proteolytic and lipolytic activity of microorganisms isolated from raw milk. Int Dairy J 49: 23-9.

Kläring K, Just S, Lagkouvardos I, Hanske L, Haller D, Blaut M, Wenning M and Clavel T (2015) Murimonas intestini gen. nov., sp. nov., an acetate-producing bacterium of the family Lachnospiraceae isolated from the mouse gut. Int J Syst Evol Microbiol 65: 870-8.

Schabauer L, Wenning M, Huber I and Ehling-Schulz M (2014) Novel physico-chemical diagnostic tools for high throughput identification of bovine mastitis associated gram-positive, catalase-negative cocci. BMC Vet Res 10:156.

Wenning M, Breitenwieser F, Konrad R, Huber, I, Busch, U and Scherer S (2014). Identification and differentiation of food-related bacteria: a comparison of FTIR spectroscopy and MALDI-TOF mass spectrometry. J Microbiol Methods 103: 44-52.

Daniel H, Moghaddas Gholami A, Berry D, Desmarchelier C, Hahne H, Loh G, Mondot S, Lepage P, Rothballer M, Walker A, Böhm C, Binder U, Wenning M, Skerra A, Wagner M, Blaut M, Schmitt-Kopplin P, Kuster B, Haller D and Clavel T (2014) High fat diet alters gut microbiota physiology in mice. ISME J 8: 295-308.

Kabisch J, Höning C, Böhnlein C, Pichner R, Gareis M and Wenning M (2013) Kazachstania psychrophila sp. nov., a novel psychrophilic yeast isolated from vacuum-packed beef. Antonie Van Leeuwenhoek 104: 925-31.

Seiler H and Wenning M (2013) Virgibacillus halotolerans sp. nov., isolated from a dairy product. Int J Syst Evol Microbiol 63: 3358-63.

Grunert T, Wenning M, Barbagelata MS, Fricker M, Sordelli DO, Buzzola F and Ehling-Schulz M  Rapid and reliable identification of Staphylococcus aureus capsular serotypes by means of artificial neural network-assisted Fourier-Transform Infrared Spectroscopy. J Clin Microbiol 51:2261-6

Seiler H, Wenning M and Scherer S (2013)
Domibacillus robiginosus gen. nov., sp. nov. isolated from a pharmaceutical clean room. Int J Syst Evol Microbiol 63:2054-2061.

Seiler H, Scherer S and Wenning M (2013) Lysinibacillus meyeri sp. nov., isolated from a medical practice. Int J Syst Evol Microbiol 63:1512-18.

Seiler H, Wenning M, Schmidt V and Scherer S (2013) Bacillus gottheilii sp. nov., isolated from a pharmaceutical manufacturing site. Int J Syst Evol Microbiol 63:867-72.

Rieser G, Scherer S, Wenning M (2013) Micrococcus cohnii sp. nov., isolated from air of a medical practice. Int.J Syst Evol Microbiol 63:80-85

Rieser G, Scherer S, Wenning M (2012) Naumannella halotolerans gen. nov., sp. nov., a new Gram-positive coccus of the family Propionibacteriaceae isolated from a pharmaceutical clean room and from food. Int J Syst Evol Microbiol 63:3042-48

Schmidt VSJ, Wenning M, Scherer S Sphingobacterium lactis sp.nov. and Sphingobacterium alimentarium sp.nov., isolated from raw milk and the dairy environment. Int J Syst Evol Microbiol 62:1506-1522.

Schmidt VSJ, Kaufmann V, Kulozik U, Scherer S, Wenning M Microbial biodiversity, quality and shelf life of microfiltered and pasteurized extended shelf life (ESL) milk from Germany, Austria and Switzerland. Int J Food Microbiol 154:1-9

Seiler H, Schmidt V, Wenning M, Scherer S Bacillus kochii sp.nov., isolated from foods and a pharmceutical manufacturing site. Int J Syst Evol Microbiol 62:193-1098.

Gulitz A, Stadie J, Wenning M, Ehrmann MA, Vogel R (2011) The microbial diversity of water kefir. Int J Food Microbiol 151:284-288.

Büchl NR, Hutzler M, Mietke-Hofmann H, Wenning M, Scherer S (2010) Differentiation of probiotic and environmental Saccharomyces cerevisiae strains in animal feed. J Appl Microbiol 109:783-791.

Clavel T, Duck W, Charrier C, Wenning M, Elson C, Haller D (2010) Enterohabdus caecimuris sp.nov., a member of the family Coriobacteriaceae isolated from a mouse model of spontaneous colitis, and emended description of the genus Enterorhabdus Clavel 2009. Int J Syst Evol Microbiol 60:1527-1531.

Wenning M, Büchl NR, Scherer S (2010) Species and strain identification of lactic acid bacteria using FTIR spectroscopy and artificial neural networks. J Biophoton 3:493-505.

Wenning M, Rieser G, Scherer S, von Brehmer S, Schuffenhauer G (2010) Rapid, simple and cost-efficient environmental monitoring of microorganisms by Fourier-transform infrared spectorscopy. In: Moldenhauer J (ed) Environmental Monitoring - A Comprehensive Handbook Vol. 4. DHI Publishing LLC, River Grove, 203-221.

Clavel T, Charrier C, Braune A, Wenning M, Blaut M and Haller D (2009) Isolation of bacteria from the ileal mucosa of TNFdeltaARE mice and description of Enterorhabdus mucosicola gen. nov., sp. nov. Int J Syst Evol Microbiol 59:1805-1812.

Schmidt VSJ, Mayr R, Wenning M, Glöckner J, Busse HJ, Scherer S (2009) Bavariicoccus seileri gen. nov., sp. nov., isolated from surface and smear water of German red smear soft cheese. Int J Syst Evol Microbiol 59:2437-2443.

Büchl NR, Wenning M, Seiler H, Mietke-Hofmann H, Scherer S (2008) Reliable identification of closely related Issatchenkia and Pichia species using artificial neural network analysis of Fourier-transform infrared spectra. Yeast 25:787-98.

Wenning M, Scherer S, Naumann D (2008) Infrared spectroscopy in the identification of microorganisms. In: Diem M, Griffith PR, Chalmers JM (eds) Vibrational spectroscopy for medical diagnosis. John Wiley & Sons, Ltd., Chichester, 71-96.

Rebuffo-Scheer CA, Dietrich J, Wenning M, Scherer S (2008) Identification of five Listeria species based on infrared spectra (FTIR) using macrosamples is superior to a microsample approach. Anal Bioanal Chem 390:1629-1635.

Wenning M, Seiler H, Scherer S (2007) Auch Bakterien haben Fingerabdrücke: Identifizierung von Mikroorganismen in der Lebensmittelindustrie mittels FTIR-Spektroskopie. dmz 12:24-27.

Santivarangkna C, Wenning M, Foerst P, Kulozik U (2007) Damage of cell envelope of Lactobacillus helveticus during vacuum drying. J. Appl. Microbiol. 102:748-756.

Rebuffo CA, Schmitt J, Wenning M, von Stetten F, Scherer S (2006) Reliable and rapid identification of Listeria monocytogenes and Listeria Species by artificial neural network-based Fourier transform infrared spectroscopy. Appl. Environ. Microbiol. 72:994-1000.

Wenning M, Theilmann V, Scherer S. (2006) Rapid analysis of two food-borne microbial communities at the species level by Fourier-transform infrared microspectroscopy. Environ. Microbiol. 8:848-857.

Wenning M, Seiler H, Scherer S (2002) Fourier-Transform infrared microspectroscopy, a novel and rapid tool for identification of yeasts. Appl. Environ Microbiol 68:4717-4721


Innovationspreis für Siegfried Scherer

Otto-von-Guericke Forschungspreis für Siegfried Scherer

A novel short L-arginine responsive protein-coding gene (laoB) antiparallel overlapping to a CadC-like transcriptional regulator in Escherichia coli O157:H7 Sakai originated by overprinting (2018)


Comparison between Listeria sensu stricto and Listeria sensu lato strains identifies novel determinants involved in infection (2017)


Differentiation of ncRNAs from small mRNAs in Escherichia coli O157:H7 EDL933 (EHEC) by combined RNAseq and RIBOseq-ryhB encodes the regulatory RNA RyhB and a Peptide, RyhP. (2017)

Complete circular genome sequence and temperature independent adaptation to Anaerobiosis of Listeria weihenstephanensis DSM 24698 (2017)

Discovery of numerous novel small genes in the intergenic regions of the Escherichia coli O157:H7 Sakai Genome (2017)

High binding affinity of repressor IolR avoids costs of untimely induction of myo-inositol utilization by Salmonella Typhimurium (2017)

Genetic characterization of the Galactitol utilization pathway of Salmonella enterica serovar Typhimurium. (2017)

Heat stability of indigenous milk plasmin and peptidases from Pseudomonas: a challenge in the production of ultra-high temperature milk products (2016)

Spoilage of Microfiltered and Pasteurized Extended Shelf Life Milk Is Mainly Induced by Psychrotolerant Spore-Forming Bacteria that often Originate from Recontamination (2017)

Bakterieller Stoffwechsel als Pathogenitätsfaktor (2016)

Transcriptional and translational regulation by RNA thermometers, riboswitches and the sRNA DsrA in Escherichia coli O157:H7 Sakai under combined cold and osmotic stress adaptation. (2016)

Hysteresis in myo-inositol utilization by Salmonella Typhimurium (2016)

Probiotic Enterococcus faecalis Symbioflor® down regulates virulence genes of EHEC in vitro and decrease pathogenicity in a Caenorhabditis elegans model (2017)

Draft Genome Sequence of Lysinibacillus xylanilyticus SR-86 (Nov. 2016)

Permanent colonization of creek sediments, creek water and limnic water plants by four Listeria species in low population densities (November 2016)

Draft Genome Sequence of the Xanthan Producer Xanthomonas campestris LMG 8031 (Oktober 2016)

Comparative Bioinformatics and Experimental Analysis of the Intergenic Regulatory Regions of Bacillus cereus hbl and nhe Enterotoxin Operons and the Impact of CodY on Virulence Heterogeneity (Mai 2016)

Regulation of fucose and 1,2-propanediol utilization by Salmonella enterica serovar Typhimurium (März 2016)

Acidified nitrite inhibits proliferation of Listeria monocytogenes - Transcriptional analysis of a preservation method (März 2016)

Translatomics combined with transcriptomics and proteomics reveals novel functional, recently evolved orphan genes in Escherichia coli O157:H7 (EHEC)

A sensitive and robust method for direct determination of lipolytic activity in natural milk environment (März 2016, online first)

Evidence for the recent origin of a bacterial protein-coding, overlapping orphan gene by evolutionary overprinting (Dez. 2015)

Massive horizontal gene transfer, strictly vertical inheritance and ancient duplications differentially shape the evolution of Bacillus cereus enterotoxin operons hbl, cytK and nhe (Nov. 2015)

Chemodiversity of cereulide, the emetic Toxin of Bacillus cereus (2015)