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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The hydrodynamics of swimming microorganisms
Eric Lauga,Thomas R. Powers +1 more
TL;DR: The biophysical and mechanical principles of locomotion at the small scales relevant to cell swimming, tens of micrometers and below are reviewed, with emphasis on the simple physical picture and fundamental flow physics phenomena in this regime.
Journal ArticleDOI
Bacillus subtilis antibiotics: structures, syntheses and specific functions
TL;DR: The structures of all known B. subtilis antibiotics are summarized, including non‐ribosomally produced lipopeptides are involved in biofilm and swarming development, lantibiotics function as pheromones in quorum‐sensing, and a ‘killing factor’ effectuates programmed cell death in sister cells.
Journal ArticleDOI
Physics of microswimmers--single particle motion and collective behavior: a review.
TL;DR: The physics of locomotion of biological and synthetic microswimmers, and the collective behavior of their assemblies, are reviewed and the hydrodynamic aspects of swimming are addressed.
Journal ArticleDOI
Physics of Microswimmers - Single Particle Motion and Collective Behavior
TL;DR: In this article, the authors review the physics of locomotion of biological and synthetic microswimmers, and the collective behavior of their assemblies, including synchronization and the concerted beating of flagella and cilia.
Journal ArticleDOI
Natural functions of lipopeptides from Bacillus and Pseudomonas: more than surfactants and antibiotics
TL;DR: This review gives a detailed overview of the versatile functions of lipopeptides in the biology of Pseudomonas and Bacillus species, and highlights their role in competitive interactions with coexisting organisms, including bacteria, fungi, oomycetes, protozoa, nematodes and plants.
References
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Journal ArticleDOI
Electron Microscopic Studies of Three Gliding Mycoplasmas, Mycoplasma mobile , M. pneumoniae , and M. gallisepticum , by Using the Freeze-Substitution Technique
Takashi Shimizu,Makoto Miyata +1 more
TL;DR: Freeze-substitution technique was applied to thin-sectioning electron microscopy of Mycoplasma mobile, M. pneumoniae, and M. gallisepticum, all of which can glide in the direction of the tapered cell end, showing detailed structures more obvious than those observed by the conventional chemical fixation.
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Examination of fimbriation of some gram-negative rods with and without twitching and gliding motility.
Jørgen Henrichsen,Jens Blom +1 more
TL;DR: It was found that all strains with twitching motility possessed fimbriae, the diameter of which was approximately 50 A in all but one strain; the fimbRIae of this strain had a diameter of approximately 40 A.
Journal ArticleDOI
Defects in gliding motility in mutants of Cytophaga johnsonae lacking a high-molecular-weight cell surface polysaccharide.
TL;DR: Five mutants specifically and highly deficient in a high-molecular-weight cell surface polysaccharide (HMPS) had rates of colony spreading and raft movement that were much lower than those of the parent strain, but the rate of increase in colony diameter was higher than that found for strains NS-1 and 21.
Population Morphogenesis by Cooperative Bacteria
TL;DR: Spatiotemporal analyses on familiar patterns (densebranching-morphology-like or concentric ring-like) by Bacillus subtilis and Proteus mirabilis revealed interactive and collaborative behavior of bacteria in the structured population.
Journal ArticleDOI
Assessment of flhDC mRNA levels in Serratia liquefaciens swarm cells.
Tim Tolker-Nielsen,Allan Beck Christensen,Kim Holmstrøm,Leo Eberl,Thomas Bovbjerg Rasmussen,Claus Sternberg,Arne Heydorn,Søren Molin,Michael Givskov +8 more
TL;DR: It is shown by means of reporter gene measurements, Northern analysis, and in situ reverse transcription-PCR that the amount of flhDC mRNA in surface-grown swarm cells does not exceed the maximum level found in nondifferentiated, vegetative cells, which suggests that surface-induced S. liquefaciens swarm cell differentiation, although dependent on fl hDC gene expression, does not occur through elevated flh DC mRNA levels.