dorsal/arxiv
View SchemaAggregation Patterns in Stressed Bacteria
| Authors | Lev Tsimring, Herbert Levine, Igor Aranson, Eshel Ben-Jacob, Inon Cohen, Ofer Shochet |
|---|---|
| Categories | |
| ArXiv ID | patt-sol/9502007 |
| URL | https://arxiv.org/abs/patt-sol/9502007 |
| DOI | 10.1103/PhysRevLett.75.1859 |
Abstract
We study the formation of spot patterns seen in a variety of bacterial species when the bacteria are subjected to oxidative stress due to hazardous byproducts of respiration. Our approach consists of coupling the cell density field to a chemoattractant concentration as well as to nutrient and waste fields. The latter serves as a triggering field for emission of chemoattractant. Important elements in the proposed model include the propagation of a front of motile bacteria radially outward form an initial site, a Turing instability of the uniformly dense state and a reduction of motility for cells sufficiently far behind the front. The wide variety of patterns seen in the experiments is explained as being due the variation of the details of the initiation of the chemoattractant emission as well as the transition to a non-motile phase.
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"abstract": "We study the formation of spot patterns seen in a variety of bacterial\nspecies when the bacteria are subjected to oxidative stress due to hazardous\nbyproducts of respiration. Our approach consists of coupling the cell density\nfield to a chemoattractant concentration as well as to nutrient and waste\nfields. The latter serves as a triggering field for emission of\nchemoattractant. Important elements in the proposed model include the\npropagation of a front of motile bacteria radially outward form an initial\nsite, a Turing instability of the uniformly dense state and a reduction of\nmotility for cells sufficiently far behind the front. The wide variety of\npatterns seen in the experiments is explained as being due the variation of the\ndetails of the initiation of the chemoattractant emission as well as the\ntransition to a non-motile phase.",
"arxiv_id": "patt-sol/9502007",
"authors": [
"Lev Tsimring",
"Herbert Levine",
"Igor Aranson",
"Eshel Ben-Jacob",
"Inon Cohen",
"Ofer Shochet"
],
"categories": [
"patt-sol",
"nlin.PS",
"q-bio.CB"
],
"doi": "10.1103/PhysRevLett.75.1859",
"title": "Aggregation Patterns in Stressed Bacteria",
"url": "https://arxiv.org/abs/patt-sol/9502007"
},
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