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Alexandre Jousset

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Alexandre Jousset Alexandre Jousset Georg-August University Göttingen, Animal Ecology Berlinerstr. 28, 37073 Göttingen, Germany E-mail : [email protected] Phone (prof.): +49551-39.5468 Phone (private): +49176-631.61.624 Personal data Birth Date: April 27th, 1981 in Lausanne, Switzerland Nationality: French, Swiss Sex: Male Languages French: Mother Tongue German: Fluent (written and spoken) Spanish: Fluent (written and spoken) English: Fluent (written and spoken) Chinese: basic knowledge Research interests I investigate the ecology and evolution of fluorescent pseudomonads involved in plant protection against pathogens. I use these bacteria as model system to understand how biotic interaction affecting the performance and evolution of living communities. In addition, I apply biotic interactions to improve strategies of biological control of plant pathogens. Keywords: Microbial ecology, biodiversity, crop protection, predator-prey interactions, microevolution Professional Experience 2009-present Lecturer („Wissenschaftlicher Mitarbeiter“), Georg-August University Göttingen. 2006-2009 PhD, Technische Universität Darmstadt, Germany: “Importance of biotic interactions for the fitness and activity of rhizosphere biocontrol pseudomonads” 2005 Reserch stay, Universidad Nacional de Quilmes, Argentina: Interactions between biocontrol bacteria Pseudomonas fluorescens CHA0 and protozoan predators (Jousset et al 2006) 2004 Umweltforschungszentrum (UFZ), Leipzig, Germany: Investigation of the effect of pesticides on soil protozoa Education 2003-2004 Diploma in Biology (MSc equivalent) Swiss Federal Institute of Technology, Lausanne, (Supervision: Antonis Chatzinotas & Hauke Harms) Publications 1. Eisenhauer, N., Schulz, W., Scheu, S., Jousset, A., (2012): Niche dimensionality links biodiversity and invasibility in microbial communities. Functional Ecology in press. 2. Becker, J., Eisenhauer, N., Scheu, S., and Jousset, A. (2012) Increasing antagonistic interactions cause bacterial communities to collapse at high diversity. Ecology Letters 15: 468-474. 3. Eisenhauer, N., Scheu, S., and Jousset, A. (2012) Bacterial diversity stabilizes community productivity. PLoS ONE 7: e34517. 4. Jousset, A. (2012) Ecological and evolutive implications of bacterial defences against predators. Environmental Microbiology 14:1830-1843.(Invited review) 5. Latz, E., Eisenhauer, N., Rall, B.C., Allan, E., Roscher, C., Scheu, S., and Jousset, A. (2012) Plant diversity improves protection against soil-borne pathogens by fostering antagonistic bacterial communities. Journal of Ecology 100: 597-604.(Notebook article in “The Scientist”) 6. Henkes, G., Jousset, A., Bonkowski, M., Thorpe, M.R., Scheu, S., Schurr, U., and Röse, U.S.R. (2011) Pseudomonas fluorescens CHA0 maintains carbon delivery to Fusarium graminearum infected roots and prevents reduction in biomass of barley shoots through systemic interactions. Journal of Experimental Botany 62: 4337-4344. 7. Jousset, A., Rochat, L., Lanoue, A., Keel, C., Bonkowski, M., and Scheu, S. (2011) Plants respond to pathogen infection by enhancing the antifungal activity of root-associated bacteria. Molecular Plant-Microbe Interactions 24: 352-358. 8. Jousset, A., Schmid, B., Scheu, S., and Eisenhauer, N. (2011) Genotypic richness and dissimilarity opposingly affect ecosystem performance. Ecology Letters 14: 537-624 (cited in various German newspapers including die Welt, Göttinger Tagesblatt, Berliner Morgenpost) 9. Jousset, A., Schulz, W., Scheu, S., and Eisenhauer, N. (2011) Intraspecific genetic richness and relatedness predict the invasibility of bacterial communities ISME Journal 5: 1108-1114. (Research Highlight in Nature Reviews Microbiology 9:312-313) 10. Neidig, N., Paul, R., Scheu, S., and Jousset, A. (2011) Secondary metabolites of Pseudomonas fluorescens CHA0 drive complex non-trophic interactions with bacterivorous nematodes. Microbial Ecology 61: 853-859. 11. Jousset, A., and Bonkowski, M. (2010) The model predator Acanthamoeba castellanii induces the production of 2,4- DAPG by the biocontrol strain Pseudomonas fluorescens Q2- 87. Soil Biology & Biochemistry 42: 1647-1649. 12. Jousset, A., Rochat, L., Scheu, S., Bonkowski, M., and Keel, C. (2010) Predator-prey chemical warfare determines the expression of antifungal genes by rhizosphere pseudomonads. Applied and Environmental Microbiology 76: 5263-5268. (rated “9 ” by Faculty of 1000) 13. Neidig, N., Jousset, A., Nunes, F., Bonkowski, M., Paul, R.J., and Scheu, S. (2010) Interference between bacterial feeding nematodes and amoebae relies on innate and inducible mutual toxicity Functional Ecology 24: 1133-1138. 14. Jousset, A., Lara, E., Nikolausz, M., Harms, H., and Chatzinotas, A. (2009) Application of the denaturing gradient gel electrophoresis (DGGE) technique as an efficient diagnostic tool for ciliate communities in soil. Sci Total Environ 408: 1221-1225. 15. Jousset, A., Rochat, L., Keel, C., Pechy-Tarr, M., Scheu, S., and Bonkowski, M. (2009) Predators promote toxicity of rhizosphere bacterial communities by selective feeding on non-toxic cheaters. ISME Journal 3: 666-674.(Research Highlight in Nature Reviews Microbiology 7:326- 327) 16. Schebb, N.H., Vielhaber, T., Jousset, A., and Karst, U. (2009) Development of a liquid chromatography-based screening methodology for proteolytic enzyme activity. Journal of Chromatography a 1216: 4407-4415. 17. Jousset, A., Scheu, S., and Bonkowski, M. (2008) Secondary metabolite production facilitates establishment of rhizobacteria by reducing both protozoan predation and the competitive effects of indigenous bacteria. Functional Ecology 22: 714-719. 18. Jousset, A., Lara, E., Wall, L.G., and Valverde, C. (2006) Secondary metabolites help biocontrol strain Pseudomonas fluorescens CHA0 to escape protozoan grazing. Applied and Environmental Microbiology 72: 7083-7090. Contributions to meetings (selected) Jousset A, Merker M, Eisenhauer N, Scheu S, 2011.” High genetic diversity accelerates adaptive radiation in microbial microcosms", XIII congress of the European Society for Evolutionary Biology (ESEB), 20-25 August, Tübingen, Germany Jousset A, Becker J, Scheu S, Eisenhauer N, 2010. “High intraspecific diversity results in collapse of plant associated Pseudomonas fluorescens communities” (Poster), 13rd International Symposium on Microbial Ecology (ISME), 22-27 August 2010, Seattle, USA. Jousset A, Kalinkat G, Brose U, Scheu S, Rall B, 2010. “Predation resistant bacteria create a protective niche for non-toxic cheaters” (Oral presentation). 3rd joint conference DGHM-VAAM, 28-31 March 2010, Hannover, Germany. Jousset A, Rochat L, Keel C, Scheu S, Bonkowski M, 2009 “Predator-prey chemical warfare determines the production of antifungal compounds by a root-associated pseudomonad” (Oral presentation). 8th PGPR Workshop, 17-22 May 2009, Portland, USA. Jousset A, Rochat L, Pechy-Tarr M , Keel C, Scheu S, Bonkowski M, 2008. “Predators promote cooperative defense and repress cheating by rhizosphere bacteria” (Oral presentation). 12th International Symposium on Microbial Ecology (ISME), 17-22 August 2008, Cairns, Australia. Invited talks (selected) 2012 “Harnessing the power of biodiversity”, JKI Institute Braunschweig, Germany “Diversity may harm you and the competitors around you”, CNRS Montpellier, France. 2011 “Impact of Biodiversity for the functioning of microbial communities”, Nanjing University, China “Allelopathy, biodiversity and complementarity: exploring the ecological ABC with model bacterial communities”. University of Minnesota, St- Paul, USA. 2010 “Model organisms in soil ecology”, Workshop of the German society for Ecology 2008 “Love-hate relationship between biocontrol bacteria and their predators”, University of Groningen, Netherlands Teaching Since 2009 Practical work and seminar “functional soil ecology” (120 h/semester). University of Göttingen 2008 Practical work and seminar “soil ecology” (40 hours). TU Darmstadt Supervised students Nine bachelor theses, eight diploma/master Theses, two PhD supervised since 2007 Bachelor theses (12 weeks) 2012 Anna Hille. Effect of nutrient availability and diffusion rate on the fitness of social cheaters in Pseudomonas fluorescens. 2011 Leonard Drees. Importance of temperature and nutrient availability on the expression of biocontrol genes by Pseudomonas fluorescens CHA0 Lennart Holst. Effect of commensal yeasts on the resistence of Drosophila melanogaster to killing by Pseudomonas fluorescens. Monika Merker. Importance of genetic recombination for bacterial fitness in diverse communities. Mona Schlottmann. Chemical communication between Pseudomonas fluorescens and Fusarium graminearum. 2010 Eva Materne. Effect of intraspecific diversity on the success of cheating Pseudomonas fluorescens. Wiebke Schulz. Effect of biodiversity and resource complexity on the invasibility of bacterial communities. 2008 Ellen Latz. Dispersion of Pseudomonas fluorescens CHA0 by nematodes, collemboles and earthworms. 2007 Nina Neidig. Mutual inhibition of the soil amoeba Acanthamoeba castellanii and the nematode Caenorhabditis elegans. (Neidig et al., Functional Ecology 2010) Diploma /Master theses (6 months) 2012 Paul Götsch. Effect of species richness on the performance of PAH degrading microorganism communities Simone Weidner. Effect of intraspecific diversity of rhizosphere bacteria on the N uptake of Arabidopsis thaliana. Katharina Fußmann. The paradox of warming: Warming dampens predator-prey oscillation (co-supervision with B. Rall) 2011 Maren Stella-Müller,. Effect of the model predator Acanthamoeba
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