The luxS mutation causes loosely-bound biofilms in Shewanella oneidensis
2011
The luxS mutation affects biofilm formation in Shewanella oneidensis
publication
Evidence: moderate
Author Information
Author(s): Bodor Agnes, Jänsch Lothar, Wissing Josef, Wagner-Döbler Irene
Primary Institution: Helmholtz-Centre for Infection Research
Hypothesis
Does the luxS mutation influence biofilm formation in Shewanella oneidensis?
Conclusion
The luxS mutation leads to the development of loosely-bound biofilms in Shewanella oneidensis.
Supporting Evidence
- The luxS mutant developed a loosely-connected biofilm that covered the glass surface more homogenously than the wild type.
- Proteins related to motility were slightly up-regulated in the luxS mutant, correlating with its loose biofilm structure.
- AI-2 depletion in S. oneidensis is independent of AI-2 presence, indicating a different metabolic role.
Takeaway
When a specific gene is changed in a type of bacteria, it makes the bacteria form weaker, less sticky clusters instead of tight ones.
Methodology
The study involved constructing a luxS mutant and comparing its biofilm formation and protein expression to a wild type control.
Limitations
The study's findings may not be generalizable to other species or under different growth conditions.
Digital Object Identifier (DOI)
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