Bacteria have to adapt constantly to survive to environmental changes. Depending on nutrient availability, the gram-positive model bacterium, Bacillus subtilis, developed an arsenal of physiological strategies such as adjusting its doubling time and its size to cope with a less favorable environment. When nutrients are lacking, B. subtilis is able to incorporate exogenous DNA or to differentiate in a metabolically dormant and environmentally resistant spore to wait for better conditions. In the lab, we are studying how B. subtilis adapts to these environmental signals.
Comprendre le fonctionnement des organismes vivants, telle est l’ambition du Centre de biologie intégrative (CBI), à Toulouse. Pour atteindre cet objectif, le CBI développe des approches multidisciplinaires, multi-échelles des molécules isolées aux organismes entiers et aux sociétés animales, et utilise de nombreux organismes modèles, des bactéries à l'homme.
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