Spatio-temporal assembly of functional mineral scaffolds within microbial biofilms
Condensed Matter journal club
Spatio-temporal assembly of functional mineral scaffolds within microbial biofilms
- Event time: 11:30am
- Event date: 18th March 2016
- Speaker: Susana Direito (Formerly School of Physics & Astronomy, University of Edinburgh)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
Event details
Abstract
Historically, multicellular bacterial communities, known as biofilms, have been thought to be held together solely by a self-produced extracellular matrix. Our study identified a novel mechanism maintaining Bacillus subtilis and Mycobacterium smegmatis biofilms-active production of calcite minerals. We studied, for the first time, the effects of mutants defective in biomineralization and calcite formation on biofilm development, resilience and morphology. We demonstrated that an intrinsic rise in carbon dioxide levels within the biofilm is a strong trigger for the initiation of calcite-dependent patterning. The calcitedependent patterns provide resistance to environmental insults and increase the overall fitness of the microbial community. Our results suggest that it is highly feasible that the formation of mineral scaffolds plays a cardinal and conserved role in bacterial multicellularity.npj Biofilms and Microbiomes 2 15031 (2016)
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Authors
Yaara Oppenheimer-Shaanan, Odelia Sibony-Nevo, Zohar Bloom-Ackermann, Ronit Suissa, Nitai Steinberg, Elena Kartvelishvily, Vlad Brumfeld, Ilana Kolodkin-Gal
About Condensed Matter journal club
Given the diversity of research in the CM group, chosen topics vary widely. We tend to stick to high-impact journals - Nature, Science, PNAS and PRL have been popular - but this is not prescriptive..