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Bacillus simplex from 'Evolution Canyon'Bacillus simplex aus dem 'Evolution Canyon' I und II in Israel

Bacillus simplex from 'Evolution Canyon' I and II in Israel.

‘Evolution Canyon’ I at Nahal Oren in the Carmel Mountains close to Haifa, and ‘Evolution Canyon’ II at Nahal Keziv close to the border to Lebanon are east–west orientated canyons. The ‘African’ south-facing slope is constantly irradiated by sun, which makes it hotter and drier – savannah-like – whereas the shady ‘European’ north-facing slope is a mesic, lush forest. We study incipient speciation of Bacillus simplex by analysing genetic and phenotypic adaptation to either slopes, with a major forcus on obvious abiotic stress differences among slopes such as heat and drought. After having explored numerous phenotypes, we now focus on genomics.

Representative publications

  • Sikorski, J., and Nevo, E. (2005) Adaptation and incipient sympatric speciation of Bacillus simplex under microclimatic contrast at "Evolution Canyons" I and II, Israel. Proc Natl Acad Sci U S A 102: 15924-15929.
  • Sikorski, J., and Nevo, E. (2006) On the necessity to study natural bacterial populations - the model of Bacillus simplex from "Evolution Canyon" I and II, Israel. Isr J Ecol Evol 52: 527-542.
  • Sikorski, J., and Nevo, E. (2007) Patterns of thermal adaptation of Bacillus simplex to the microclimatically contrasting slopes of "Evolution Canyon" I and II, Israel. Environ Microbiol 9: 716–726.
  • Sikorski, J., Pukall, R., and Stackebrandt, E. (2008) Carbon source utilization patterns of Bacillus simplex ecotypes do not reflect their adaptation to ecologically divergent slopes in "Evolution Canyon", Israel. FEMS Microbiology Ecology 66: 38-44.
  • Sikorski, J., Brambilla, E., Kroppenstedt, R.M., and Tindall, B.J. (2008) The temperature adaptive fatty acid content in Bacillus simplex strains from "Evolution Canyon", Israel. Microbiology 154: 2416-2426.
  • Koeppel, A., Perry, E.B., Sikorski, J., Krizanc, D., Warner, A., Ward, D.M. et al. (2008) Identifying the fundamental units of bacterial diversity: a paradigm shift to incorporate ecology into bacterial systematics. Proc Natl Acad Sci U S A 105: 2504-2509.
  • Sikorski, J. (2008) Populations under microevolutionary scrutiny: what will we gain? Arch Microbiol 189: 1-5.
  • Sikorski, J. (2009) Prokaryotic Intraspecies Diversity. In In: Encyclopedia of Life Sciences (ELS). Chichester. DOI: 10.1002/9780470015902.a0020377: John Wiley & Sons, Ltd.
  • Connor, N., Sikorski, J., Rooney, A.P., Kopac, S., Koeppel, A.F., Burger, A. et al. (2010) Ecology of speciation in Bacillus. Appl Environ Microbiol 76: 1349-1358.
  • Herberich, E., Sikorski, J., and Hothorn, T. (2010) A robust procedure for comparing multiple means under heteroscedasticity in unbalanced designs. PLoS ONE 5: e9788.
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.

Photo of Jörn  Petersen
PD Dr. Petersen, Jörn
Phone: +49-531/2616-209
Photo of Boyke  Bunk
Dr. Bunk, Boyke
Phone: +49-531/2616-322