Random motility of swimming bacteria: Single cells compared to cell populations
The motility of a population of swimming bacteria can be characterized by a random motility coefficient, μ, the operational equivalent of a diffusion coefficient at the macroscopic level and in the absence of interacting chemical gradients. At the microscopic level, random motility is related to the...
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| Veröffentlicht in: | AIChE journal 1994-02, Vol.40 (2), p.334-348 |
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| creator | Phillips, Bret R. Quinn, John A. Goldfine, Howard |
| description | The motility of a population of swimming bacteria can be characterized by a random motility coefficient, μ, the operational equivalent of a diffusion coefficient at the macroscopic level and in the absence of interacting chemical gradients. At the microscopic level, random motility is related to the single‐cell parameters: speed, tumbling probability, and index of directional persistence (related to the angle a cell's path assumes following a change in direction). Various mathematical models have been proposed for relating the macroscopic random motility coefficient to these microscopic single‐cell parameters. In separate experiments, we have measured motility at both the cell‐population and single‐cell levels for Escherichia coli. The agreement of these results shows that the macroscopic transport behavior of a population of motile bacteria can be predicted from straightforward microscopic observations on single cells. |
| doi_str_mv | 10.1002/aic.690400212 |
| format | Article |
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At the microscopic level, random motility is related to the single‐cell parameters: speed, tumbling probability, and index of directional persistence (related to the angle a cell's path assumes following a change in direction). Various mathematical models have been proposed for relating the macroscopic random motility coefficient to these microscopic single‐cell parameters. In separate experiments, we have measured motility at both the cell‐population and single‐cell levels for Escherichia coli. 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At the microscopic level, random motility is related to the single‐cell parameters: speed, tumbling probability, and index of directional persistence (related to the angle a cell's path assumes following a change in direction). Various mathematical models have been proposed for relating the macroscopic random motility coefficient to these microscopic single‐cell parameters. In separate experiments, we have measured motility at both the cell‐population and single‐cell levels for Escherichia coli. The agreement of these results shows that the macroscopic transport behavior of a population of motile bacteria can be predicted from straightforward microscopic observations on single cells.</description><subject>Bacteriology</subject><subject>Biological and medical sciences</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Microbiology</subject><subject>Motility, taxis</subject><subject>Swimming</subject><issn>0001-1541</issn><issn>1547-5905</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNp9kMtLAzEQxoMoWB9H70G8bs1jN2m8SdEqlCo-8Bhms1mJ7m7WZIv2vzfaUjx5GObBb74ZPoROKBlTQtg5ODMWiuSppmwHjWiRy6xQpNhFI0IIzdKA7qODGN9Sx-SEjdDdA3SVb3HrB9e4YYV9jeOna1vXveISzGCDgwv8mNrGYmObJmLj2x6CrfDgfye49_2ygcH5Lh6hvRqaaI83-RA9X189TW-y-d3sdno5z0xOOcuEgLKsRF7VipSGCVDC8JxzkZOJnNS2LhiksOlHW0FJgQvKjJDMSK4MkfwQna51--A_ljYO-s0vQ5dOaqoUz1VBRYKyNWSCjzHYWvfBtRBWmhL9Y5lOlumtZYk_24hCNNDUATrj4naJK6kKXiRMrrFP19jV_5r68nb698DmIRcH-7XdhPCuheSy0C-LmRYLIe9vJNML_g1ueIoy</recordid><startdate>199402</startdate><enddate>199402</enddate><creator>Phillips, Bret R.</creator><creator>Quinn, John A.</creator><creator>Goldfine, Howard</creator><general>American Institute of Chemical Engineers</general><general>Wiley Subscription Services</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7U5</scope><scope>8FD</scope><scope>C1K</scope><scope>L7M</scope><scope>SOI</scope></search><sort><creationdate>199402</creationdate><title>Random motility of swimming bacteria: Single cells compared to cell populations</title><author>Phillips, Bret R. ; Quinn, John A. ; Goldfine, Howard</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4132-66abbd64df90bc26a96c3433640878fef52af52e782edab1a3612c672c739c073</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>Bacteriology</topic><topic>Biological and medical sciences</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Microbiology</topic><topic>Motility, taxis</topic><topic>Swimming</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Phillips, Bret R.</creatorcontrib><creatorcontrib>Quinn, John A.</creatorcontrib><creatorcontrib>Goldfine, Howard</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Environment Abstracts</collection><jtitle>AIChE journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Phillips, Bret R.</au><au>Quinn, John A.</au><au>Goldfine, Howard</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Random motility of swimming bacteria: Single cells compared to cell populations</atitle><jtitle>AIChE journal</jtitle><addtitle>AIChE J</addtitle><date>1994-02</date><risdate>1994</risdate><volume>40</volume><issue>2</issue><spage>334</spage><epage>348</epage><pages>334-348</pages><issn>0001-1541</issn><eissn>1547-5905</eissn><coden>AICEAC</coden><abstract>The motility of a population of swimming bacteria can be characterized by a random motility coefficient, μ, the operational equivalent of a diffusion coefficient at the macroscopic level and in the absence of interacting chemical gradients. 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| ispartof | AIChE journal, 1994-02, Vol.40 (2), p.334-348 |
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| language | eng |
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| source | Wiley Journals |
| subjects | Bacteriology Biological and medical sciences Fundamental and applied biological sciences. Psychology Microbiology Motility, taxis Swimming |
| title | Random motility of swimming bacteria: Single cells compared to cell populations |
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