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Strain collection

Zentralinstitut für Ernährungs- und Lebensmittelforschung (ZIEL)

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

Weihenstephan Microbial Strain Collection

The strain collection of the microbiology unit specializes on food borne bacteria and yeasts. These general collections are growing steadily due to isolates resulting from routine identification work of our service department and the development of FT-IR technology for the identification of microorganisms. The bacterial collection also contains many strains of food borne pathogens. In addition, three specialized collections have been established which form the basis of current research projects. Our collections harbor a total of about 7000 strains.

WSGeneral collection of bacteria: ca. 4000 strains
WSYCGeneral collection of yeastsca.   750 strains
WSMCGeneral collection of mouldsca.   350 strains
WSLC Research collection of Listeria: ca. 1900 strains 
WSBC Research collection of Bacillus cereus Group:ca. 1100 strains
 Research collection of yeastsca. 3000 strains
Research collection of coryneform bacteria: ca. 1200 strains

For further information please contact Gertrud Huith (

Description of novel bacterial genera and species

Scientists at the Chair of Microbial Ecology described the following novel procaryotic taxa

Bacillus weihenstephanensis sp. nov. (1998)
Ornithinibacillus gen. nov. (2006)
             Ornithinibacillus bavariensis sp. nov.
             Ornithinibacillus californiensis sp. nov.
Bavariicoccus gen .nov. 
             Bavariicoccus seileri sp .nov.
Enterorhabdus gen. nov.
            Enterorhabdus mucosicola sp. nov.
Vibrio casei sp.nov.
Enterorhabdus caecimuris sp. nov. (2010)

Bacillus kochii sp. nov.  (2012)

Sphingobacterium  (2012)

            Sphingobacterium alimentarium sp.nov.

            Sphingobacterium lactis sp.nov.

Psychroflexus halocasei sp .nov. (2012)    
Naumanella gen.nov. (2012)
             Naumanella halotolerans sp.nov.
Virgibacillus halotolerans sp. nov. (2013)
Micrococcus cohnii sp. nov. (2013)
Lysinibacillus meyeri sp. nov. (2013)
Domibacillus gen. nov. (2013)
              Domibacillus robiginosus sp. nov.
Parvibacter gen. nov. (2013)
              Parvibacter caeicola sp. nov. 
Bacillus gottheilii sp. nov. (2013)
Kazachstania psychrophila sp. nov. (2013)
Murimonas gen. nov. (2015)
               Murimonas intestini sp. nov.
Pseudomonas helleri sp. nov. (2016)
Pseudomonas weihenstephanensis sp. nov. (2016)

Pseudomonas lactis sp. nov. (2017)
Pseudomonas paralactis sp. nov (2017)
Lysobacter phytonis sp. nov. (2019)


Thermally induced milk fouling: Survival of thermophilic spore Formers and potential of contamination (Dez 2019)

Optimality in the standard gentic code is robust with respect to comparison code sets (2019)

Accurate quantification of thermophilic spores in dairy powders (2019)

Pseudomonas lactis sp. nov. and Pseudomonas paralactis sp. nov., isolated from bovine raw milk (2017)

Resistance of thermophilic spore formers isolated from milk and whey products towards cleaning-in-place conditions: Influence of pH, temperature and milk residues (2019)

Proposal of Lysobacter pythonis sp. nov. isolated from royal pythons (Python regius) (2019)

The novel EHEC gene asa overlaps the TEGT transporter gene in antisense and is regulated by NaCl and growth Phase (Dec 2018)

The small RNA RssR regulates myo-inositol degradation by Salmonella enterica (Dec.2018)

Activity of a Holin-Endolysin System in the Insecticidal Pathogenicity Island of Yersinia enterocolitica (2018)

Reprogramming Human Siderocalin to Neutralize Petrobactin, the Essential Iron Scavenger of Anthrax Bacillus (2018)

Insecticidal Toxicity of Yersinia frederiksenii Involves the Novel Enterotoxin YacT (2018)

Dysfunction, Disease, and the Limits of Selection (2018)

Dynamic Proteome Alteration and Functional Modulation of Human Saliva Induced by Dietary Chemosensory Stimuli (2018)

Genome sequence of the novel virulent bacteriophage PMBT14 with lytic avtivity against Pseudomonas fluorescens DSM 50090 (2018)

The Novel Anaerobiosis-Responsive Overlapping Antisense to the Annotated Gene ECs2385 of Escherichia coli O157:H7 Sakai (Mai 2018)

Thermal treatment of skim milk concentrates in a novel shear-heating device: Reduction of thermophilic spores and physical properties (Febr. 2018)

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)

Thermal resistance of vegetative thermophilic spore forming bacilli in skim milk isolated from dairy Environments (2017)

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)

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

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)

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)

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)

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)