Bulletin of Mathematical Biology

, Volume 66, Issue 2, pp 261–299 | Cite as

Qualitative simulation of the initiation of sporulation in Bacillus subtilis

  • Hidde de Jong
  • Johannes Geiselmann
  • Grégory Batt
  • Céline Hernandez
  • Michel Page
Article

Abstract

Under conditions of nutrient deprivation, the Gram positive soil bacterium Bacillus subtilis can abandon vegetative growth and form a dormant, environmentally-resistant spore instead. The decision to either divide or sporulate is controlled by a large and complex genetic regulatory network integrating various environmental, cell-cycle, and metabolic signals. Although sporulation in B. subtilis is one of the best-understood model systems for prokaryotic development, very little quantitative data on kinetic parameters and molecular concentrations are available. A qualitative simulation method is used to model the sporulation network and simulate the response of the cell to nutrient deprivation. Using this method, we have been able to reproduce essential features of the choice between vegetative growth and sporulation, in particular the role played by competing positive and negative feedback loops.

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Copyright information

© Society for Mathematical Biology 2004

Authors and Affiliations

  • Hidde de Jong
    • 1
  • Johannes Geiselmann
    • 2
  • Grégory Batt
    • 1
  • Céline Hernandez
    • 3
  • Michel Page
    • 1
    • 4
  1. 1.Institut National de Recherche en Informatique et en Automatique (INRIA)Unité de recherche Rhône-AlpesSaint Ismier CedexFrance
  2. 2.Laboratoire Adaptation et Pathogénie des Microorganismes (CNRS UMR 5163)Université Joseph FourierGrenoble Cedex 9France
  3. 3.Swiss Institute of Bioinformatics (SIB)Geneva 4Switzerland
  4. 4.Ecole Supérieure des AffairesUniversité Pierre Mendès FranceGrenobleFrance

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