Our research in Molecular Microbiology at the Dept. of Life Sciences and Chemistry of Jacobs University can be summarized as such: We are working on Frontiers in Microbiology, Plant Sciences and Marine Sciences. From Cocoa Metabolomics via Diatom-Bacteria Interactions, Vibrio in Seawater/Oysters, and Antibiotics Research to Bioactivity of Rhododendron - what unifies our attempts are heterotrophic bacteria interacting with phototrophic eukaryotes.

In individual research projects, we study the proteome(s) and genome(s) of plants and developed a number of genetically accessible model systems for plant-bacteria interactions. This included analyzing the role(s) of exopolymer synthesis and bacterial attachment, of regulatory proteins and metabolic pathways important for the interactions, of plant defense elicitor such as the phytotoxin coronatine as well as of plant-borne substances affecting bacterial cells and their multidrug efflux pumps. Finally we focus on the importance of (bioactive) compounds synthesized during the fermentation and processing of cocoa beans. In order to get all these amazing analyses making sense, we cooperate with dedicated high-tech data science specialists and experts in high-resolution chemistry.

• 2000 Habilitation in Microbiology - Phillips-University Marburg / Germany
• 1992 Ph.D. in Microbiology - Friedrich-Schiller-University Jena / Germany and Max-Planck-Institute for Medical Research Heidelberg, Germany
• 1990 Diploma in Biology / Major: Microbiology - Friedrich-Schiller-University Jena / Germany 

• 2021 - Honorary Professorship, Amity University, Uttar Pradesh, India
• 2009 - Professor of the Year-Award 2008/2009, Jacobs University Bremen
• 2008 - DAAD Short-term Lectureship, Uzbekistan
• 2007 - Professor of the Year-Award 2006/2007, Jacobs University Bremen
• 2004 - DAAD Short-term Lectureship, India
• 1992-1994 - German Academic Exchange Service (DAAD) Postdoctoral Fellowship
• 1991 - Chemical Industry Foundation Fellowship
• 1989-1992 - Graduate Student Fellowship, Friedrich-Schiller-University Jena

• since 2002: Professorship at Constructor University Bremen (annual or semester-long lectures)

Undergraduate Teaching (all once a year):

1.  Microbiology (5 ECTS, 50-60 students)
2.  Plant Metabolism and Natural Products Methods Course (5 ECTS, 60-70 students)
3.  Microbiology Laboratory Course (2.5 ECTS, 30-40 students) 
4.  Microbial Pathogenicity (2.5 ECTS, 50-60 students)
5.  BSc Thesis supervision (taught jointly with 3 colleagues and 30-40 students)

Supervised PhD theses (31 completed and 2 running)

Grants the last 10 years:

1. Industry cooperation Cabosse N.V. “Peptide Research on Cocoa III”, two postdoctoral fellows (2021-2023).
2. Bremer Aufbaubank BioActPhyt “Nachhaltige Entwicklung natürlicher bioaktiver Phytoextrakte aus Lebensmittelabfällen zur Anwendung in der alternativen Hygienetechnology“, one graduate students (2020-2022).
3. Industry cooperation Cabosse N.V. “Turning Knowledge to Profit – Peptide Research on Cocoa II”, three postdoctoral fellows (2020-2021).
4. Industry cooperation Barry Callebaut AG “Cocoa Metabolomics”, Extension, one postdoctoral fellow, two technician positions (2020-2023).
5. Industry cooperation Cabosse N.V. “Peptide Research on Cocoa I”, one postdoctoral fellow (2018-2019).
6. DFG grant UL 169/6-2 extension proposal, “Molecular Dissection of Bacteria-Diatom Interactions”, one graduate student (2016-2019).
7. DFG-ANR grant UL 169/7-1 “Impact of environmental changes on coastal pathogen systems (ENVICOPAS), one graduate student (2016-2019).
8. Incentive Fund MARUM, University of Bremen “Sustainable Deep-Sea Mining Initiative, MARUM-Jacobs University Bremen, one graduate student (2015-2018).
9. Industry cooperation Barry Callebaut AG “Cocoa Metabolomics”, two graduate student positions, one technician position (2014-2020).
10. Research cooperation, Stiftung Rhododendronpark e.V. “Detection and identification of bio-active compounds from the genus Rhododendron”, two graduate students (2012-2015).
11. Helmholtz Foundation grant POLMAR “Proteomics in marine bacteriology”, one graduate student (2012-2015).
12. DFG grant UL 169/6-1 “Molecular characterization of the aggregate formation-inducing interaction between Marinobacter adhaerens HP15 and the diatom, Thalassiosira weissflogii”, one graduate student (2012-2015). Renewal applied for in Jan 2016 – request for two graduate students.
13. Industry cooperation Phytolutions GmbH “Antiviral activities of marine microalgae interacting with bacteria”, one postdoctoral fellow (2009-2012).
14. Helmholz Foundation grant POLMAR “Molecular Analysis of diatom-bacteria interactions”, one graduate student (2009-2012).
15. DFG grant UL 169/5-1 “Transcriptional regulation, differential secretion, and eco-physiological function(s) of levansucrase in the plant pathogen, Pseudomonas syringae”, one postdoctoral fellow and one graduate student (2009-2012).

 Grants 1996-2007: more than 15 third-party fundings

Publications (over the last 10 years)

• Rohit Dey, Franziska Ortiz Tena, Song Wang, Josef Martin Messmann, Christian Steinweg, Claudia Thomsen, Clemens Posten, Stefan Leu, Matthias S. Ullrich, Laurenz Thomsen. 2023. Exploring advanced phycoremediation strategies for resource recovery from secondary wastewater using a large scale photobioreactor. Bioresource Technology 391, 129986 https://doi.org/10.1016/j.biortech.2023.129986 (2023)
• Jean-Baptiste Raina, Marco Giardina1, Douglas R. Brumley, Peta L. Clode, Mathieu Pernice, Paul Guagliardo, Jeremy Bougoure, Himasha Mendis, Steven Smriga, Eva C. Sonnenschein, Matthias S. Ullrich, Roman Stocker & Justin R. Seymour. Chemotaxis increases metabolic exchanges between marine picophytoplankton and heterotrophic bacteria. Nature Microbiology. Published 09.02.2023 https://doi.org/10.1038/s41564-023-01327-9 (2023)
• Vincent Ninkuu, Jianpei Yan, Zenchao Fu, Tengfeng Yang, James Ziemah, Matthias S Ullrich, Nikolai Kuhnert, Hongmei Zeng. Lignin and Its Pathway-Associated Phytoalexins Modulate Plant Defense against Fungi. Journal of Fungi, 2022 Dec 29;9(1):52. https://doi.org/10.3390/jof9010052 (2022)
• Moreno-Zambrano M, Ullrich, MS, Hütt M-T. 2022 Exploring cocoa bean fermentation mechanisms by kinetic modelling. R. Soc. Open Sci. 9: 210274. https://doi.org/10.1098/rsos.210274 (2022)
• Kumar S., R.N. D’Souza, M. Corno, M.S. Ullrich, N. Kuhnert, and M.-T. Hütt. Cocoa Bean Fingerprinting via Correlation Networks, npj Science of Food 6:5 (2022).
• Yu SS, and M.S. Ullrich. Characterization of Salt Tolerant Phosphate and Zinc Solubilizing Bacillus Isolates for Plant Protection and Plant Stimulation use in Sustainable Agriculture in Myanmar, Int J Plant Biol Res 9(1):1126 (2021).
• Kuhnert N., and M.S. Ullrich. Editorial special edition Cocotea 2019. Fifth international conference on coffee, cocoa and tea. Food Research International 143: 110243 (2021).
• Thorstenson C.A., and M.S. Ullrich. Ecological Fitness of Vibrio cholerae, Vibrio parahemolyticus, and Vibrio vulnificus in a small-scale population dynamics study. Frontiers in Marine Science 8: 623988 (2021).
• Kumar S., R.N. D’Souza, B. Behrends, M. Corno, M.S. Ullrich, N. Kuhnert, and M.T. Hütt. Cocoa origin classifiability through LC-MS data: A statistical approach for large and long-term datasets. Food Research International 140: 109983 (2021).
• Will V., A. Stahl, and M.S. Ullrich. Heavy metal resistance in Marinobacter adhaerens HP15 supports colonization of transparent exopolymer particles during its interaction with diatoms. Marine Ecology Progress Series 658: 47-57 (2021).
• Said I.H., C. Hagedorn, D.D. Petrov, M.B. Retta, J.D. Truex, S. Haka, M.S. Ullrich, and N. Kuhnert. LC-MS based metabolomic approach for the efficient identification and relative quantification of bioavailable cocoa phenolics in human urine. Food Chemistry 364: 130198 (2021).
• Thorstenson C.A., and M.S. Ullrich. Developing a universal and efficient method for the rapid selection of stable fluorescent protein-tagged pathogenic Vibrio species. Marine Science and Engineering 8: 804 (2020).
• Kuhnert N., R.N. D’Souza, B. Behrends, M.S. Ullrich, and M. Witt. Investigating time dependent cocoa bean fermentation by ESI-FT-ICR mass spectrometry. Food Research International 133: 109209 (2020).
• Ma T., P. Yang, I. Dammann, Z. Lin, A.S. Mougharbel, M.X. Li, F. Adascalitei, R. Mitea, C. Silvestru, C.A. Thorstenson, M.S. Ullrich, K. Cseh, A. Jakupec, B.K. Keppler, M. Donalisio, R. Cavalli, D. Lembo, and U. Kortz. Tetra-(p-toly)antimony(III)-containing heteropolytungstates, [(p-toly)SbIII)4(A-alpha-XW9O34)]n- (X = P, As, or Ge): Synthesis, Structure, and Study of Antibacterial and Antitumor Activity. Inorganic Chemistry 59: 2978–2987 (2020).
• John W.A., N. Böttcher, B. Behrends, M. Corno, N. Kuhnert, and M.S. Ullrich. Experimentally modelling cocoa bean fermentation reveals key factors and their influences. Food Chemistry 302: 125335 (2020).
• Warren A. John, Nina L. Böttcher, Britta Behrends, Roy N. D’Souza, Marcello Corno, Nikolai Kuhnert, and Matthias S. Ullrich (2019) Experimentally modelling cocoa bean fermentation reveals key factors and their influences. Food Chemistry 302: 125335. DOI: 10.1016/j.foodchem.2019.125335
• Song Wang, Diana Sirbu, Laurenz Thomsen, Nikolai Kuhnert, Matthias S. Ullrich, and Claudia Thomsen (2019) Comparative lipidomic studies of Scenedesmus sp. (Chlorophyceae) and Cylindrotheca closterium (Bacillariophyceae) reveal their differences in lipid production under nitrogen starvation. Journal of Phycology, 24 May 2019, DOI 10.1111/jpy.12887
• Benjamin Gillard, Damianos Chatzievangelou, Laurenz Thomsen, and Matthias S. Ullrich (2019) Heavy-metal-resistant microorganisms in deep-sea sediments disturbed by mining activity: An application toward the development of experimental in vitro systems. Frontiers in Marine Science 6: 462. DOI: 10.3389/fmars.2019.00462
• Warren A. John, Nina L. Böttcher, Maximilian Aßkamp, Audrey Bergouhou, Neha Kumari, Ping-Wei Ho, Roy N. D’Souza, Elke Nevoigt, and Matthias S. Ullrich (2019) Forcing Fermentation: Profiling Proteins, Peptides, and Polyphenols in Lab-Scale Cocoa Bean Fermentation. Food Chemistry 278:786-794, DOI 10.1016/j.foodchem.2018.11.108
• Nikolai Kuhnert, Inamullah H. Said, Abhinandan Shrestha, Ahmed Rezk, Anne Grimbs, Jennifer Nolzen, Harwig Schepker, Klaudia Brix, Dirk Albach, and Matthias S. Ullrich (2019) Rhododendron natural products as sources of novel antibiotics. Rhododendrons International 3(2): 141-151.
• San San Yu and Matthias S. Ullrich (2018) Interaction of nitrogen fixation and alginate synthesis of Azotobacter vinelandii isolated from Myanmar mangroves. International Journal of Plant Biology & Research 6(2): 1088.
• Mauricio Moreno-Zambrano, Sergio Grimbs, Matthias S. Ullrich, and Marc-Thorsten Hütt (2018) A mathematical model of cocoa bean fermentation. Royal Society Open Science, DOI: 10.1098/rsos.180964.
• Ingrid Torres-Monroy and Matthias S. Ullrich (2018) Identification of bacterial genes expressed during diatom-bacteria interactions using an in vivo expression technology approach. Frontiers in Marine Science, DOI: 10.3389/fmars.2018.00200.
• Diana Sirbu, Anne Grimbs, Marcello Corno, Matthias S. Ullrich, and Nikolai Kuhnert (2018) Variation of triacylglycerol profiles in unfermented and dried fermented cocoa beans of different origins. Food Research International 111: 361-370, DOI 10.1016/j.foodres.2018.05.025.
• Neha Kumari, Anne Grimbs, Roy N. D’Souza, Sujit K. Verma, Marcello Cornoa, Nikolai Kuhnert, and Matthias S. Ullrich (2018) Origin and varietal based proteomic and peptidomic fingerprinting of Theobroma cacao in non-fermented and fermented cocoa beans. Food Research International 111: 137-147 DOI 10.1016/j.foodres.2018.05.010.
• Song Wang, Sujit K. Verma, Inamullah H. Said, Laurenz Thomsen, Matthias S. Ullrich, and Nikolai Kuhnert (2018) Changes in fucoxanthin production and protein profiles in Cylindrotheca closterium in response to blue light-emitting diode light. Microbial Cell Factories 17: 110 DOI 10.1186/s12934-018-0957-0
• Wassim W. Ayass, T Fodor, E Farkas, Z Lin, HM Qasim, S Bhattacharya, AS Mougharbel, Khaled Abdallah, Matthias S. Ullrich, S Zaib, J Iqbal, S Harangi, G Szalontai, I Bányai, L Zékány, I Tóth, and Uli Kortz. (2018) Dithallium(III)-Containing 30-Tungsto-4-phosphate, [Tl2Na2(H2O)2(P2W15O56)2]16-: Synthesis, Structural Characterization, and Biological Studies. Inorganic Chemistry. DOI 10.1021/acs.inorgchem.8b00878.
• Roy N. D’Souza, Anne Grimbs, Sergio Grimbs, Britta Behrends, Marcello Corno, Matthias S. Ullrich, and Nikolai Kuhnert (2018) Degradation of cocoa proteins into oligopeptides during spontaneous fermentation of cocoa beans. Food Research International 109: 506-516, DOI 10.1016/j.foodres.2018.04.068.
• Song Wang, Inamullah H. Said, Candice Thorstenson, Claudia Thomsen, Matthias S. Ullrich, Nikolai Kuhnert, and Laurenz Thomsen (2018) Pilot-scale production of antibacterial substances by the marine diatom Phaeodactylum tricornutum Bohlin. Algal Research 32: 113-120. DOI 10:1016/j.algal.2018.03.014.
• Inamullah H. Said, Selin Gencer, Matthias S. Ullrich, and Nikolai Kuhnert (2018) Tea and coffee time with bacteria – Investigation of uptake of key coffee and tea phenolics by wild type Escherichia coli. Food Research International, DOI 10.1016/j.foodres.2018.03.023.
• Diana Sirbu, Marcello Corno, Matthias S. Ullrich, and Nikolai Kuhnert (2018) Characterization of triacylglycerols in unfermented cocoa beans by HPLC-ESI mass spectrometry. Food Chemistry 254: 232-240. DOI 10.1016/j.foodchem.2018.01.194.
• Antje Stahl, Alexandra I. Lazar, Veronica Muchemu, Werner M. Nau, Matthias S. Ullrich, and Andreas Hennig (2017) A fluorescent, supramolecular chemosensor to follow steroid depletion in bacterial cultures. Anal Bioanal Chem. DOI 10.1007/s00216-017-0593-2.
• Abhinandan Shretha, Ahmed Rezk, Inamullah H. Said, Victoria von Glasenapp Rachelle Smith, Matthias S. Ullrich, Hartwig Schepker, and Nikolai Kuhnert (2017). Comparison of the polyphenolic profile and antibacterial activity of the leaves, fruits and flowers of Rhododendron ambiguum and Rhododendron cinnabarinum. BMC Research Notes 10:297. DOI 10.1186/s13104-017-260-1.
• Inamullah H. Said, Ahmed Rezk, Isfahin Hussain, Anne Grimbs, Abhinandan Shrestha, Hartwig Schepker, Klaudia Brix, Matthias S. Ullrich, and Nikolai Kuhnert (2017). Metabolome Comparison of Bioactive and Inactive Rhododendron Extracts and Identification of an Antibacterial Cannabinoid(s) from Rhododendron collettianum. Phytochemical Analysis. DOI 10.1002/pca.269.
• Roy N. D’Souza, Sergio Grimbs, Britta Behrends, Herwig Bernaert, Matthias S. Ullrich, and Nikolai Kuhnert (2017) Origin-based polyphenolic fingerprinting of Theobroma cacao in unfermented and fermented beans. Food Research International, doi.org/10.1016/j.foodres.2017.06.007.
• Anne Grimbs, Abhinandan Shretha, Ahmed Rezk, Sergio Grimbs, Inamullah H. Said, Hartwig Schepker, Marc-Thorsten Hütt, Dirk C. Albach, Klaudia Brix, Nikolai Kuhnert, and Matthias S. Ullrich (2017) Bioactivity in Rhododendron: A systemic analysis of antimicrobial and cytotoxic activities and their phylogenetic and phytochemical origins. Frontiers in Plant Science DOI: 10.3389/fpls.2017.00551.
• Antje Stahl and Matthias S. Ullrich (2016) Proteomics analysis of the response of the marine bacterium Marinobacter adhaerens HP15 to the diatom Thalassiosira weissflogii. Aquatic Microbial Ecology DOI: 10.3354/ame01804.
• Neha Kumari, Kouame J. Kofi, Sergio Grimbs, Roy D’Souza, Nikolai Kuhnert, Gino Vrancken, and Matthias S. Ullrich (2016) Biochemical fate of vicilin storage protein during fermentation and drying of cocoa beans. Food Research International DOI: 10.1016/j.foodres.2016.10.033.
• Warren A. John, Neha Kumari, Nina L. Böttcher, Kouame J. Kofi, Sergio Grimbs, Gino Vrancken, Roy N. D’Souza, Nikolai Kuhnert, and Matthias S. Ullrich (2016) Aseptic artificial fermentation of cocoa beans can be fashioned to replicate the peptide profile of commercial cocoa bean fermentation. Food Research International DOI: 10.1016/j.foodres.2016.10.011.
• Khaled Abdallah, Katharina Hartman, Daniel Pletzer, Daria Zhurina, and Matthias S. Ullrich (2016) The bacteriophage-derived transcriptional regulator, LscR, activates the expression of levansucrase genes in Pseudomonas syringae. Molecular Microbiology DOI: 10.1111/mmi.13536.
• Wassim W. Ayass, Tamas Fodor, Zhengguo Lin, Rachelle M. Smith, Xiaolin Xing, Khaled Abdallah, Imre Toth, Laszlo Zekany, Magda Pascual-Borras, Antonio Rodriguez-Fortea, Joseph M. Poblet, LinyuanFan, Jie Cao, Bineta Keita, Matthias S. Ullrich, and Ulrich Kortz (2016) Synthesis, structure, and antibacterial activity of a Ti3+-containing polyoxometalate, [Ti2{B-ß-SiW8O30(OH)}2]12-. Inorganic Chemistry DOI 10.102/acs.inorgchem.6b01921.
• Inamullah H. Said, Rohan Shah, Matthias S. Ullrich, and Nikolai Kuhnert (2016) Quantification of microbial uptake of quercetin and its derivatives using an UHPLC-ESI-qTOF mass spectrometry assay. Food and Function 2016 DOI: 10.1039/C6FO00652C.
• Peng Yang, Zhengguo Lin, Bassem S. Bassil, Gabriela Alfaro-Espinoza, Matthias S. Ullrich, Ming-Xing Li, Cristian Silvestru, and Ulrich Kortz (2016) Tetra-Antimony(III)-bridged 18-Tungsto-2-arsenates(V), [(LSbIII)4 (A-alpha-AsW9O34)2]10- (L = Ph, OH): Turning bioactivity on and off by ligand substitution. Inorg. Chem. 2016, DOI: 10.1021/acs.inorgchem/6b00107.
• Mohamed Gamaledin Elsadig Karar, Laura Quiet, Ahmed Rezk, Rakesh Jaiswal, Maren Rehders, Matthias. S. Ullrich, Klaudia Brix, and Nikolai Kuhnert (2016) Phenolic profile and in vivo assessment of cytotoxicity and antibacterial activity of Ziziphus spina-christi leaf extracts. Medicinal Chemistry 2016, Vol. 6:143-156. DOI: 10.4172/2161-0444.1000339.
• Peng Yang, Zhengguo Lin, Gabriela Alfaro-Espinoza, Matthias S. Ullrich, Ciprian I. Rat, Cristian Silvestru, and Ulrich Kortz (2015) 19-Tungstodiarsenate(III) functionalized by organoantimony(III) groups: Tuning the structure-bioactivity relationship. Inorg. Chem. 2015, Dec. 14. DOI: 10.1021/acs.inorgchem/5b02189.
• Ahmed Rezk, Alaa Al-Hashimi, Warren John, Hartwig Schepker, Matthias S. Ullrich, and Klaudia Brix (2015) Assessment of cytotoxicity exerted by leaf extracts from plants of the genus Rhododendron towards epidermal keratinocytes and intestine epithelial cells. BMC Complementary and Alternative Medicine 15: 364-382 DOI: 10.1186/s12906-015-0860-8.
• Peng Yang, Bassem S. Bassil, Zhengguo Lin, Ali Haider, Gabriela Alfaro-Espinoza, Matthias S. Ullrich, Cristian Silvestru, and Ulrich Kortz (2015) Organoantimony(III)-containing tungstoarsenates(III): From controlled assembly to biological activity. Chemistry A European Journal 2015, 21, 1-8 DOI: 10.1002/chem.201502398
• Antje Stahl, Daniel Pletzer, Amna Mehmood and Matthias S. Ullrich (2015) Marinobacter adhaerens HP15 harbors two CzcCBA efflux pumps involved in zinc detoxification. Antonie van Leeuwenhoek (2015) DOI: 10.1007/s10482-015-0520-5.
• Anna Lopf, Mesude Bicak, Renzo Kottmann, Julia Schnelzer, Ivaylo Kostadinov,… Matthias S. Ullrich, Gunnar Gerdts, Antje Wichels,… and Frank Oliver Glöckner (2015) The ocean sampling day consortium. GigaScience 4:27 (2015) DOI: 10.1186/s13742-015-0066-5.
• Gabriela Alfaro-Espinoza and Matthias S. Ullrich (2015). Bacterial N2-fixation in mangrove ecosystems: insights from a diazotroph-mangrove interaction. Front. Microbiol. 6:445. DOI: 10.3389/fmicb.2005.00445.
• Ahmed Rezk, Jennifer Nolzen, Hartwig Schepker, Dirk C Albach, Klaudia Brix and Matthias S Ullrich (2015). Phylogenetic spectrum and analysis of antibacterial activities of leaf extracts from plants of the genus Rhododendron.BMC Complementary and Alternative Medicine (2015). DOI 10.1186/s12906-015-0596-5.
• Amna Mehmood, Khaled Abdallah, Shaunak Khandekar, Daria Zhurina, Abhishek Srivastava, Nehaya Al-Karablieh, Gabriela Alfaro-Espinoza, Daniel Pletzer, Matthias S. Ullrich (2015). Expression of extra-cellular levansucrase in Pseudomonas syringae is controlled by the in planta fitness-promoting metabolic repressor HexR. BMC Microbiology.2015, 15:48. DOI: 10.1186/s12866-015-0349-0.
• Melinda Bartok, Rashmi Tandon, Gabriela Alfaro-Espinoza, Matthias S. Ullrich, Detlef Gabel (2015). Reduction of Cytotoxicity of Benzalkonium Chloride and Octenidine by Brilliant Blue G. EXCLI Journal 01/2015; 14:123-132.
• Shalin Seebah, Caitlin Fairfield, Matthias S. Ullrich, Uta Passow (2014). Aggregation and Sedimentation of Thalassiosira weissflogii (diatom) in a Warmer and More Acidified Future Ocean. PLoS ONE 11/2014.
• Gabriela Alfaro-Espinoza, Matthias S. Ullrich (2014). Marinobacterium mangrovicola sp. nov., a marine nitrogen-fixing bacterium isolated from mangrove roots of Rhizophora mangle. International Journal of Systematic and Evolutionary Microbiology 09/2014; 2.80 Impact Factor
• Shaunak K, Srivastava A, Pletzer D, Stahl A and Ullrich MS (2014). The conserved upstream region of lscB/C determines expression of different levansucrase genes in plant pathogen Pseudomonas syringae. BMC Microbiology 2014, 14:79 doi:10.1186/1471-2180-14-79
• P Khodaygan, H Rahimian, M Shams-Bakhsh, M Ullrich, H Wiengart (2013). ANGULAR LEAF SPOT OF SLEEPY MALLOW INCITED BY A PATHOVAR, CLOSELY SIMILAR to Pseudomonas syringae pv. Syringae*. Iranian Journal of Plant Pathology. 01/2013; 49(1):1-5.
• Rwehumbiza, RM, Vennapusa RR, Gavara PR, -Fernandez-Lahore HM, Al-Karablieh N, Ullrich MS (2014). Potential of fibrous adsorbents for the binding and characterization of Porphyridium purpureum bioactive polysaccharides. JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, Volume:89, Issue:1, Pages:65-72, DOI: 10.1002/jctb.4120
• Sonnenschein EC, Abebew Syit D, Grossart HP, Ullrich MS (2012). Chemotaxis of Marinobacter adhaerens and its impact on attachment to the diatom Thalassiosira weissflogii. Appl Environ Microbiology 78, 6900-6907.
• Emami K, Askari V, Ullrich M, Mohinudeen K, Anil AC, et al. (2012) Characterization of Bacteria in Ballast Water Using MALDI-TOF Mass Spectrometry. PLoS ONE 7(6): e38515. doi:10.1371/journal.pone.0038515
• Kaeppel, E., A. Gärdes, S. Seebah, H.P. Grossart, and M. Ullrich. (2012) Marinobacter adhaerens sp. nov., prominent in aggregate formation with the diatom Thalassiosira weissflogii. Int. J. Syst. Evol. Microbiol 62: 124-128.
• Srivastava, A., Al-Karablieh N., Khandekar S., Sharim A., Weingart H., and Ullrich M. (2012). Genomic distribution of levansucrase-coding genes in Pseudomonas syringae. Genes, 3: 115-137. doi: 10.3390/genes3010115.
• Gärdes A., Ramaye Y., Grossart H-P., Passow U., and Ullrich M.S. (2012). Effects of Marinobacter adhaerens HP15 on polymer exudation by Thalassiosira weissflogii at different N:P ratios. Marine Ecology Progress Series 461, 1-14 (2012).
• Barsukova-Stuckart M., Piedra-Garza L.F., Gautam B., Alfaro-Espinoza G., Izarova N.V., Banerjee A., Bassil B.S., Ullrich M..S, Breunig H.J., Silvestru C., Kortz U. (2012). Synthesis and Biological Activity of Organoantimony(III)-Containing Heteropolytungstates. Inorg Chem. 2012 Oct 24. [Epub ahead of print]; PMID: 23094716 [PubMed – as supplied by publisher]
• Gärdes, A., Iversen M.H., Grossart H.P., Passow U., and Ullrich M.. Diatom-associated bacteria are required for aggregation of Thalassiosira weissflogii. ISME Journal, 5, 436-445 (2011).
• Sonnenschein, E., Gärdes, A. Seebah S., Torres-Monroy I., Grossart H.P., and Ullrich M.. Development of a genetic system for Marinobacter adhaerens HP15 involved in marine aggregate formation by interacting with diatom cells. J. Microbiol Methods 87, 176-183 (2011).

Books:

• Ullrich, M. Bacterial Polysaccharides – Current Innovations and Future Trends. Caister Academic Press, ISBN 978-1-904455-45-5, Norfolk, UK, (2009).

• American Society for Microbiology, USA
• International Society for Molecular Plant-Microbe Interactions,USA
• Deutsche Phytomedizinische Gesellschaft, Germany
• Vereinigung für Allgemeine und Angewandte Mikrobiologie, Germany
• Faculty and 2nd Speaker, International Max Planck Research School “Marine Microbiology”
• Scientific Advisory Board Stiftung Rhododendronpark Bremen
• Scientific Advisory Board Botanika Bremen – Green Science Center, Bremen

• 1991-1992        Research Associate, Max-Planck-Institute for Medical Research, Heidelberg
• 1992-1996        Postdoctoral Research Associate, Oklahoma State University, Stillwater, OK, USA
• 1996-2002        Head of the Independent Research Group „Ecophysiology“, Max-Planck-Institute for Terrestrial Microbiology, Marburg.
• 2000                  Habilitation (venia legendi) in Microbiology, Philipps-University Marburg.
• since 2002        Full Professor (C4) for Microbiology, Jacobs University Bremen.
• since 2006        Vice Speaker of the International Max Planck Research School for Marine Microbiology Bremen
• 2011-2015        Speaker, Molecular Life Science Research Center, Jacobs University
• since 2012        Project coordinator, Rhododendron Biochemistry Research, Jacobs University
• since 2014        Project head, Cocoa Metabolomics Research, Barry Callebaut – Jacobs University