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The topics include transcription factors that defend bacteria against reactive oxygen species, the gut microbiota of termites: digesting the diversity in the light of ecology and evolution, the perception and homeostatic control of iron in the rhizobia and related bacteria, stochastic switching of cell fate in microbes, and septins and the generation of asymmetries in fungal cells.
Septins are cytoskeleton components widely recognized for their role in eukaryotic cell division. Krokowski et al. discover that septins recognize dividing bacterial cells for entrapment and delivery to lysosomes. These results reveal a fundamental danger signal used by the host cell to recognize intracellular bacterial pathogens for cellular immunity.

Septins are an evolutionarily conserved group of GTP-binding and filament-forming proteins that were originally discovered in yeast. Once the preserve of a small band of yeast biologists, the field has grown rapidly in the past few years and now encompasses the whole of animal and fungal biology.

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| | | | | | Running Times - January/February 2013