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Breakdown of Vibrio cholerae biofilm architecture induced by antibiotics disrupts community barrier function
Name
EMS84331.pdf
Description
Accepted version
Size
6.63 MB
Format
Adobe PDF
Checksum (MD5)
70f40dfc5f769a26b440e209cddd5673
Author(s)
Díaz-Pascual, Francisco
Hartmann, Raimo
Lempp, Martin
Vidakovic, Lucia
Song, Boya
Jeckel, Hannah
Thormann, Kai M
Yildiz, Fitnat H
Dunkel, Jörn
Link, Hannes
Date Issued
2019
Journal
Nature Microbiology
Publisher
Springer Science and Business Media LLC
Version
Author's final manuscript
Abstract
© 2019, The Author(s), under exclusive licence to Springer Nature Limited. Bacterial cells in nature are frequently exposed to changes in their chemical environment1,2. The response mechanisms of isolated cells to such stimuli have been investigated in great detail. By contrast, little is known about the emergent multicellular responses to environmental changes, such as antibiotic exposure3–7, which may hold the key to understanding the structure and functions of the most common type of bacterial communities: biofilms. Here, by monitoring all individual cells in Vibrio cholerae biofilms during exposure to antibiotics that are commonly administered for cholera infections, we found that translational inhibitors cause strong effects on cell size and shape, as well as biofilm architectural properties. We identified that single-cell-level responses result from the metabolic consequences of inhibition of protein synthesis and that the community-level responses result from an interplay of matrix composition, matrix dissociation and mechanical interactions between cells. We further observed that the antibiotic-induced changes in biofilm architecture have substantial effects on biofilm population dynamics and community assembly by enabling invasion of biofilms by bacteriophages and intruder cells of different species. These mechanistic causes and ecological consequences of biofilm exposure to antibiotics are an important step towards understanding collective bacterial responses to environmental changes, with implications for the effects of antimicrobial therapy on the ecological succession of biofilm communities.
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DOI of Published Version
10.1038/S41564-019-0579-2
