Journal ArticleDOI
Bacterial motility on a surface: many ways to a common goal.
TLDR
This review focuses mainly on surface motility and makes comparisons to features shared by other surface phenomenon.Abstract:
When free-living bacteria colonize biotic or abiotic surfaces, the resultant changes in physiology and morphology have important consequences on their growth, development, and survival. Surface motility, biofilm formation, fruiting body development, and host invasion are some of the manifestations of functional responses to surface colonization. Bacteria may sense the growth surface either directly through physical contact or indirectly by sensing the proximity of fellow bacteria. Extracellular signals that elicit new gene expression include autoinducers, amino acids, peptides, proteins, and carbohydrates. This review focuses mainly on surface motility and makes comparisons to features shared by other surface phenomenon.read more
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Regulators involved in Dickeya solani virulence, genetic conservation, and functional variability.
TL;DR: Analysis of mutants constructed by inactivating the genes coding for one of the main negative regulators of D. dadantii virulence indicated that PecS, PecT and KdgR play a similar role in both species, repressing to different degrees the synthesis of virulence factors.
Journal ArticleDOI
Dead cells release a 'necrosignal' that activates antibiotic survival pathways in bacterial swarms.
TL;DR: It is shown that antibiotic-induced death of a sub-population benefits the swarm by enhancing adaptive resistance in the surviving cells, thus enhancing antibiotic resistance inThe surviving cells.
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Loss of the WaaL O-Antigen Ligase Prevents Surface Activation of the Flagellar Gene Cascade in Proteus mirabilis
TL;DR: Although O antigen may serve a role in swarming by promoting wettability, the loss of O antigen blocks a regulatory pathway that links surface contact with the upregulation of flhDC expression.
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Uncovering a large set of genes that affect surface motility in Salmonella enterica serovar Typhimurium.
TL;DR: A large set of genes affecting motility in Salmonella enterica serovar Typhimurium are described, showing that null mutations in these genes primarily affect swarming motility.
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Assessing biodegradation benefits from dispersal networks
TL;DR: In this article, a spatially explicit bacterial colony model was developed and applied to controlled laboratory experiments with Pseudomonas putida G7 organisms as a case study, and degradation performance was analyzed in response to different environmental scenarios and showed that conditions of limited bacterial dispersal also limit degradation performance.
References
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Book
Escherichia coli and Salmonella :cellular and molecular biology
TL;DR: The Enteric Bacterial Cell and the Age of Bacteria Variations on a Theme by Escherichia is described.
Journal ArticleDOI
Quorum Sensing in Bacteria
TL;DR: The evolution of quorum sensing systems in bacteria could, therefore, have been one of the early steps in the development of multicellularity.
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Biofilm Formation as Microbial Development
TL;DR: The results reviewed in this article indicate that the formation of biofilms serves as a new model system for the study of microbial development.
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Biofilms as complex differentiated communities.
TL;DR: It is submitted that complex cell-cell interactions within prokaryotic communities are an ancient characteristic, the development of which was facilitated by the localization of cells at surfaces, which may have provided the protective niche in which attached cells could create a localized homeostatic environment.
Journal ArticleDOI
Flagellar and twitching motility are necessary for Pseudomonas aeruginosa biofilm development
George A. O'Toole,Roberto Kolter +1 more
TL;DR: The isolation and characterization of mutants of Pseudomonas aeruginosa PA14 defective in the initiation of biofilm formation on an abiotic surface, polyvinylchloride (PVC) plastic are reported and evidence that microcolonies form by aggregation of cells present in the monolayer is presented.