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  Flow-driven waves and phase-locked self-organization in quasi-one-dimensional colonies of Dictyostelium discoideum

Gholami, A., Steinbock, O., Zykov, V., & Bodenschatz, E. (2015). Flow-driven waves and phase-locked self-organization in quasi-one-dimensional colonies of Dictyostelium discoideum. Physical Review Letters, 114(1): 018103. doi:10.1103/PhysRevLett.114.018103.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0029-7DBC-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002A-D70B-E
Genre: Journal Article

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Gholami, A.1, Author              
Steinbock, O., Author
Zykov, V.1, Author              
Bodenschatz, E.1, Author              
Affiliations:
1Laboratory for Fluid Dynamics, Pattern Formation and Biocomplexity, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063287              

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 Abstract: We report experiments on flow-driven waves in a microfluidic channel containing the signaling slime mold Dictyostelium discoideum. The observed cyclic adenosine monophosphate (cAMP) wave trains developed spontaneously in the presence of flow and propagated with the velocity proportional to the imposed flow velocity. The period of the wave trains was independent of the flow velocity. Perturbations of flow-driven waves via external periodic pulses of the signaling agent cAMP induced 1:1, 2:1, 3:1, and 1:2 frequency responses, reminiscent of Arnold tongues in forced oscillatory systems. We expect our observations to be generic to active media governed by reaction-diffusion-advection dynamics, where spatially bound autocatalytic processes occur under flow conditions.

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Language(s): eng - English
 Dates: 2015-01-062015-01-09
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1103/PhysRevLett.114.018103
BibTex Citekey: Gholami.Steinbock.ea2015
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Title: Physical Review Letters
Source Genre: Journal
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Pages: 5 Volume / Issue: 114 (1) Sequence Number: 018103 Start / End Page: - Identifier: -