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Pseudomonas aeruginosa (PA) from river systems in Northern GermanyPseudomonas aeruginosa (PA) aus Flußsystem in Norddeutschland

Pseudomonas aeruginosa from river systems in Northern Germany

Much focus in population genetic research on Pseudomonas aeruginosa has been done on clinical strains, which is understandable based on the health threat exerted as oportunistic pathogen. However, the major habitat of Pseudomonas aeruginosa is unquestionably the natural and specifically aquatic environment, which has been neglected until now. Hence, the influene of natural environmental factors on diversification of Pseudomonas aeruginosa was unexplored. We have isolated more than 500 strains from rivers in Northern Germany and have characterized most of them with respect to geographic origin, seasonal distribution, genetic similarity, and numerous ecophysiologically relevant phenotypes. We have observed that both the water quality (low, moderate or strong chemical pollution) and phage pressure play a major role in speciation within Pseudomonas aeruginosa.

Representative publications

  • Selezska, K., Kazmierczak, M., Müsken, M., Garbe, J., Schobert, M., Häussler, S., Wiehlmann L, Rohde C, and Sikorski J. (2012) Pseudomonas aeruginosa population structure revisited under environmental focus: impact of water quality and phage pressure. Environmental Microbiology 14(8):1952-67.
Photo of Johannes  Sikorski
Dr. Sikorski, Johannes
Phone: +49-531/2616-111
Photo of Christine  Rohde
Dr. Rohde, Christine
Phone: +49-531/2616-220

All kinds of naturally occurring or genetically engineered plasmids within hosts, broad variety of phages from different habitats and for various hosts, E. coli mutants, test and host strains, medically relevant E. coli.