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J Bacteriol. 2008 Oct;190(20):6811-6. doi: 10.1128/JB.00662-08. Epub 2008 Aug 22.

Chemotaxis as an emergent property of a swarm.

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  • 1Department of Biology, Syracuse University, Syracuse, New York 13244, USA.

Abstract

We have characterized and quantified a form of bacterial chemotaxis that manifests only as an emergent property by measuring symmetry breaking in a swarm of Myxococcus xanthus exposed to a two-dimensional nutrient gradient from within an agar substrate. M. xanthus chemotaxis requires cell-cell contact and coordinated motility, as individual motile cells exhibit only nonvectorial movement in the presence of a nutrient gradient. Genes that specifically affect M. xanthus chemotaxis include at least 10 of the 53 that express enhancer binding proteins of the NtrC-like class, an indication that this behavior is controlled through transcription, most likely by a complex signal transduction network.

PMID:
18723623
[PubMed - indexed for MEDLINE]
PMCID:
PMC2566203
Free PMC Article
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