Role of Exopolymeric Substances (EPS) in the Stability of the Biofilm of Thiomonas arsenivorans Grown on a Porous Mineral Support - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY Année : 2011

Role of Exopolymeric Substances (EPS) in the Stability of the Biofilm of Thiomonas arsenivorans Grown on a Porous Mineral Support

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Résumé

Biochemical methods were selected to evaluate the role of exopolymeric substances in the stability of biofilms used in bioremediation processes. Biofilms of Thiomonas arsenivorans formed on pozzolana were thus treated with pronase (protein target), lectins (Con A or PNA), calcofluor or periodic acid (polysaccharides target), DNase (DNA target), and lipase (triglycerides target). Neither protease nor DNase treatments had any effect on bacterial adhesion. Lectins and calcofluor treatments mainly affected young biofilms. Lipase treatment had a noticeable effect on biofilm stability whatever the biofilm age. Results suggest that it would be an increased resistance of mature biofilms that protects them from external attacks.
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hal-00667802 , version 1 (08-02-2012)

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Caroline Michel, Françis Garrido, Emilie Roche, Sylvain Challan-Belval, Marie Christine Dictor. Role of Exopolymeric Substances (EPS) in the Stability of the Biofilm of Thiomonas arsenivorans Grown on a Porous Mineral Support. JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY, 2011, 21 (2), pp.183-186. ⟨10.4014/jmb.1001.01017⟩. ⟨hal-00667802⟩

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