main_revised.pdf (17.62 MB)

Hybrid sideways/longitudinal swimming in the monoflagellate Shewanella oneidensis: from aerotactic band to biofilm

Download (17.62 MB)
journal contribution
posted on 02.11.2020, 14:54 by Laura Stricker, Isabella Guido, Thomas Breithaupt, Marco Mazza, Jürgen Vollmer
Shewanella oneidensis MR-1 are facultative aerobic electroactive bacteria with an appealing potential for sustainable energy production and bioremediation. They gather around air sources, forming aerotactic bands and biofilms. Here, we experimentally follow the evolution of the band around an air bubble, and we find good agreement with the numerical solutions of the pertinent transport equations. Video microscopy reveals a transition between motile and non-motile MR-1 upon oxygen depletion, preventing further development of the biofilm. We discover that MR-1 can alternate between longitudinal fast and sideways slow swimming. The resulting bimodal velocity distributions change in response to different oxygen concentrations and gradients, supporting the biological functions of aerotaxis and confinement.

Funding

People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme FP7/2007- 2013/under REA grant agreement no. 628154, from the MaxSynBio Consortium which is jointly funded by the Federal Ministry of Education and Research of Germany and the Max Planck Society, and from the Deutsche Forschungsgemeinschaft (SFB 937, project A20)

History

School

  • Science

Department

  • Mathematical Sciences

Published in

Journal of The Royal Society Interface

Volume

17

Issue

171

Publisher

The Royal Society

Version

AM (Accepted Manuscript)

Rights holder

© The Authors

Publisher statement

This paper was accepted for publication in the journal Journal of The Royal Society Interface and the definitive published version is available at https://doi.org/10.1098/rsif.2020.0559.

Acceptance date

06/10/2020

Publication date

2020-10-28

Copyright date

2020

ISSN

1742-5689

eISSN

1742-5662

Language

en

Depositor

Dr Marco Mazza. Deposit date: 30 October 2020

Article number

20200559

Exports