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Comment
.2021 Jun 16:10:e70327.
doi: 10.7554/eLife.70327.

The social life of cyanobacteria

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The social life of cyanobacteria

Conrad W Mullineaux et al. Elife..

Abstract

The cyanobacteriumSynechocystis secretes a specific sulphated polysaccharide to form floating cell aggregates.

Keywords: Synechocystis sp. PCC 6803; bloom; cyanobacteria; exopolysaccharide; infectious disease; microbiology; plant biology.

© 2021, Mullineaux and Wilde.

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Conflict of interest statement

CM, AW No competing interests declared

Figures

Figure 1.
Figure 1.. Collective behaviour and lifestyle choices in single-celled cyanobacteria.
Bacteria can stay in suspension as individual cells, adhere collectively to surfaces to form biofilms, passively sediment, or flocculate to form suspended aggregates. Cyanobacteria are able to produce sulphated polysaccharides (yellow haze surrounding clumps of cells) that enable them to form floating aggregates. Maeda et al. discovered that the oxygen produced by the cyanobacteria becomes trapped in the network of polysaccharides and cells, enabling the microorganisms to form buoyant blooms. It is thought that specific protein fibres known as pili (represented as lines radiating from the cells) may act as an additional way to link cells to each other or onto surfaces. Some cyanobacteria also use sophisticated intracellular gas vesicles as floating aids.
See this image and copyright information in PMC

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References

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