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Role of shear stress on composition, diversity and dynamics of biofilm bacterial communities.
- Source :
-
Water research [Water Res] 2008 Dec; Vol. 42 (20), pp. 4915-22. Date of Electronic Publication: 2008 Oct 01. - Publication Year :
- 2008
-
Abstract
- This article evaluates the effect of shear stress on the composition of biofilm bacterial communities. For the first time, a Conical Couette-Taylor Reactor (CCTR) was used to develop biofilms at varying shear stresses (from 0.055 to 0.27 Pa) and provided a useful model for studying the effect of hydrodynamics on biofilms. The composition, diversity and dynamics of biofilm bacterial communities were analysed using the PCR-SSCP fingerprint method. Results clearly demonstrate a link between shear stress and composition of the microbial communities. High shear stresses decrease biofilm diversity and the analysis of biofilm community dynamics suggests that shear stress would slow down biofilm maturation and tend to maintain a young biofilm.
- Subjects :
- DNA Primers
DNA, Bacterial isolation & purification
Equipment Design
Escherichia coli genetics
Escherichia coli isolation & purification
Genetic Variation
Polymerase Chain Reaction
Polymorphism, Single-Stranded Conformational
Bacteria growth & development
Biofilms growth & development
Bioreactors microbiology
Stress, Mechanical
Subjects
Details
- Language :
- English
- ISSN :
- 0043-1354
- Volume :
- 42
- Issue :
- 20
- Database :
- MEDLINE
- Journal :
- Water research
- Publication Type :
- Academic Journal
- Accession number :
- 18945468
- Full Text :
- https://doi.org/10.1016/j.watres.2008.09.015