Structural mechanics of filamentous cyanobacteria

  title={Structural mechanics of filamentous cyanobacteria},
  author={Mixon K. Faluweki and Lucas Goehring},
  journal={Journal of the Royal Society Interface},
Filamentous cyanobacteria, forming long strands of connected cells, are one of the earliest and most successful forms of life on Earth. They exhibit self-organized behaviour, forming large-scale patterns in structures like biomats and stromatolites. The mechanical properties of these rigid structures have contributed to their biological success and are important to applications like algae-based biofuel production. For active polymers like these cyanobacteria, one of the most important… 

Quantifying gliding forces of filamentous cyanobacteria

Filamentous cyanobacteria are one of the oldest and today still most abundant lifeforms on earth, with manifold implications in ecology and economics. Their flexible filaments, often several hundred



Envelope structure of four gliding filamentous cyanobacteria

The cell walls of four gliding filamentous Oscillatoriaceae species comprising three different genera were studied by freeze substitution, freeze fracturing, and negative staining to determine the propulsive force generated by shear forces between the surface fibrils and the continuing flow of secreted extracellular slime.

Undirected motility of filamentous cyanobacteria produces reticulate mats

Laboratory experiments with a strain of the cyanobacteria Pseudanabaena demonstrate that distinctive morphologies arise from the undirected gliding and colliding of filaments, demonstrating a direct link between a microbial behavior and a community morphology.

A Model of Filamentous Cyanobacteria Leading to Reticulate Pattern Formation

A cell-based model is used to simulate the formation of reticulate patterns in cultures of Pseudanabaena and indicates that systems with little to no cohesion, high trichome density and persistent movement are conducive to Reticulate pattern formation, in conformance with experimental observations.

Shape analysis of filamentous Precambrian microfossils and modern cyanobacteria

The measured correlation length of the pyrite filaments is consistent with modern Geitlerinema whereas that of Halythrix lies not far from modern Oscillatoria, suggesting that there may be structural similarities among these genera.

Deformation of Filamentous Escherichia coli Cells in a Microfluidic Device: A New Technique to Study Cell Mechanics

  • Y. Caspi
  • Biology, Engineering
    PloS one
  • 2014
It is shown that, at low forces, the force needed to deform growing cells to the same extent as non-growing cells is approximately two times smaller than that needed for growing cells under low forces.

Bacterial Cell Mechanics.

The contribution of individual proteins and macromolecular complexes in cell mechanics and the tools that make it possible to quantitatively decipher the biochemical machinery that contributes to bacterial cell mechanics are discussed.

Bending forces plastically deform growing bacterial cell walls

It is demonstrated for the first time that mechanical stress directly influences cell wall synthesis of bacteria and a single dimensionless parameter can describe the cell’s responses under various experimental conditions, providing insight into how living cells robustly maintain their shape under varying physical environments.

Cyanobacterial Mats and Stromatolites

A hypothesis has been developed which conceives a role for extracellular polysaccharides in calcification in cyanobacterial mats, which is often produced as the result of unbalanced growth caused by nitrogen deficiency.

Gliding motility in cyanobacteria: observations and possible explanations

The possible role of distinct cell surfaces formed by specifically arranged protein fibrils and organelle-like structures, which may be involved in the secretion of mucilage during locomotion, are the topic of this review.