Author
Listed:
- Saida Benomar
(Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille Université)
- David Ranava
(Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille Université)
- María Luz Cárdenas
(Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille Université)
- Eric Trably
(INRA, UR050, Laboratoire de Biotechnologie de l'Environnement)
- Yan Rafrafi
(INRA, UR050, Laboratoire de Biotechnologie de l'Environnement)
- Adrien Ducret
(Laboratoire de Chimie Bactérienne, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille Université)
- Jérôme Hamelin
(INRA, UR050, Laboratoire de Biotechnologie de l'Environnement)
- Elisabeth Lojou
(Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille Université)
- Jean-Philippe Steyer
(INRA, UR050, Laboratoire de Biotechnologie de l'Environnement)
- Marie-Thérèse Giudici-Orticoni
(Laboratoire de Bioénergétique et Ingénierie des Protéines, Institut de Microbiologie de la Méditerranée, CNRS-Aix-Marseille Université)
Abstract
Knowledge of the behaviour of bacterial communities is crucial for understanding biogeochemical cycles and developing environmental biotechnology. Here we demonstrate the formation of an artificial consortium between two anaerobic bacteria, Clostridium acetobutylicum (Gram-positive) and Desulfovibrio vulgaris Hildenborough (Gram-negative, sulfate-reducing) in which physical interactions between the two partners induce emergent properties. Molecular and cellular approaches show that tight cell–cell interactions are associated with an exchange of molecules, including proteins, which allows the growth of one partner (D. vulgaris) in spite of the shortage of nutrients. This physical interaction induces changes in expression of two genes encoding enzymes at the pyruvate crossroads, with concomitant changes in the distribution of metabolic fluxes, and allows a substantial increase in hydrogen production without requiring genetic engineering. The stress induced by the shortage of nutrients of D. vulgaris appears to trigger the interaction.
Suggested Citation
Saida Benomar & David Ranava & María Luz Cárdenas & Eric Trably & Yan Rafrafi & Adrien Ducret & Jérôme Hamelin & Elisabeth Lojou & Jean-Philippe Steyer & Marie-Thérèse Giudici-Orticoni, 2015.
"Nutritional stress induces exchange of cell material and energetic coupling between bacterial species,"
Nature Communications, Nature, vol. 6(1), pages 1-10, May.
Handle:
RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms7283
DOI: 10.1038/ncomms7283
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