By David G. Davies (auth.), Hans-Curt Flemming, Jost Wingender, Ulrich Szewzyk (eds.)
Living in biofilms is the typical lifestyle of microorganisms, transiently immobilized of their matrix of extracellular polymeric components (EPS), interacting in lots of methods and utilizing the matrix as an exterior digestion and security approach. this can be how they've got geared up their lifestyles within the surroundings, within the scientific context and in technical platforms – and has helped cause them to the oldest, such a lot profitable and ubiquitous type of lifestyles.
In this e-book, sizzling spots in present biofilm examine are awarded in severe and infrequently provocative chapters. This serves a twofold objective: to supply an summary and to motivate extra discussions. certainly, the booklet seeks to stimulate lateral thinking.
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Extra info for Biofilm Highlights
At 30 min of treatment, the cells of the microcolony in the image are seen to begin to separate from the matrix, and at 40 min the microcolony has disaggregated. When flow was reinstated, the microcolony dispersed leaving behind only bacteria attached directly to the substratum (from David Davies) 2008; Huang and Wong 2007; Wang et al. 2004). The best characterized of these low-molecular-weight fatty acids is DSF, which is responsible for the regulation of virulence in Xanthomonas campestris (Barber et al.
Biofilm dispersion thus holds significant promise a mechanism for the management and control of resistant or recalcitrant bacterial populations. References Allison DG, Ruiz B, SanJose C, Jaspe A, Gilbert P (1998) Extracellular products as mediators of the formation and detachment of Pseudomonas fluorescens biofilms. 43 billion-year-old stromatolite reef from the Pilbara Craton of Western Australia: ecosystem-scale insights to early life on Earth. Precambrian Res 158:198–227 Barber CE et al (1997) A novel regulatory system required for pathogenicity of Xanthomonas campestris is mediated by a small diffusible signal molecule.
The concentration of released bacteria in the effluent increased markedly 24–36 h after AIP-I addition. In contrast, the number of bacteria in the biofilm effluent of untreated cultures remained relatively constant. 3% reduction in biomass within 48 h of AIP-I addition. Consistent with a protease-mediated mechanism, increased levels of serine proteases were detected in the biofilm reactor effluents. Furthermore, it was shown that quorum-sensing activation increased the production of extracellular proteases.