Christian Kost

Prof. Dr. Christian Kost is a Professor in the Department of Ecology at the University of Osnabrück. His research focuses on the molecular and ecological mechanisms underlying cooperative interactions between organisms, particularly metabolic cross-feeding in bacteria. He leads the Experimental Ecology and Evolution group, investigating how cooperation evolves and its physiological consequences. Key research topics include the evolution of cooperation, synergistic coevolution, microbial community dynamics, bacterial multicellularity, and phenotypic heterogeneity.

Methodologies employed include experimental evolution, synthetic ecology, genomics, microscopy/microfluidics, and theoretical modeling. Recent work highlights obligate cross-feeding’s role in expanding bacterial metabolic niches and the prevalence of reciprocity in mutualistic interactions. Kost’s lab has published influential studies on microbial symbiosis, including landmark papers in Nature Ecology & Evolution and Current Biology.

Current projects explore ecological interaction networks, predator-prey dynamics (e.g., ciliate-bacteria), and synthetic microbial communities. The lab actively collaborates with international researchers and employs cutting-edge techniques like omics profiling and individual-based modeling (e.g., McComedy tool development).

Recent lab additions include bachelor students Karmen Lohstroh, Pía-Kathleen Habekost, and Finn Dinnus. Kost’s work bridges theoretical and experimental approaches, aiming to define principles governing microbial cooperation and its ecological significance.