Abstract
The dispersal of an initially well-defined concentration of the motile bacterium Escherichia coli was measured under nonchemotactic conditions. The distribution of bacteria along a glass observation cell was measured by recording the intensity of light scattered by the organisms. For comparison, the diffusion of fluorescein was also measured by determining the distribution of fluorescence throughout the observation cell. The dispersal of bacteria from a plane layer, under nonchemotactic conditions, can be adequately described by the Gaussian solution of the diffusion equation.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Adler J., Dahl M. M. A method for measuring the motility of bacteria and for comparing random and non-random motility. J Gen Microbiol. 1967 Feb;46(2):161–173. doi: 10.1099/00221287-46-2-161. [DOI] [PubMed] [Google Scholar]
- Berg H. C., Brown D. A. Chemotaxis in Escherichia coli analyzed by three-dimensional tracking. Antibiot Chemother (1971) 1974;19:55–78. doi: 10.1159/000395424. [DOI] [PubMed] [Google Scholar]
- Dahlquist F. W., Elwell R. A., Lovely P. S. Studies of bacterial chemotaxis in defined concentration gradients. A model for chemotaxis toward L-serine. J Supramol Struct. 1976;4(3):329–342. doi: 10.1002/jss.400040304. [DOI] [PubMed] [Google Scholar]
- Dahlquist F. W., Lovely P., Koshland D. E., Jr Quantitative analysis of bacterial migration in chemotaxis. Nat New Biol. 1972 Mar 29;236(65):120–123. doi: 10.1038/newbio236120a0. [DOI] [PubMed] [Google Scholar]
- Holz M., Chen S. H. Spatio-temporal structure of migrating chemotactic band of Escherichia coli. I. Traveling band profile. Biophys J. 1979 May;26(2):243–261. doi: 10.1016/S0006-3495(79)85248-0. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lovely P. S., Dahlquist F. W. Statistical measures of bacterial motility and chemotaxis. J Theor Biol. 1975 Apr;50(2):477–496. doi: 10.1016/0022-5193(75)90094-6. [DOI] [PubMed] [Google Scholar]
- Lovely P., Dahlquist F. W., Macnab R., Koshland D. E., Jr An instrument for recording the motions of microorganisms in chemical gradients. Rev Sci Instrum. 1974 May;45(5):683–686. doi: 10.1063/1.1686713. [DOI] [PubMed] [Google Scholar]
- Nossal R., Weiss G. H. Analysis of a densitometry assay for bacterial chemotaxis. J Theor Biol. 1973 Sep 14;41(1):143–147. doi: 10.1016/0022-5193(73)90194-x. [DOI] [PubMed] [Google Scholar]
- Segel L. A., Chet I., Henis Y. A simple quantitative assay for bacterial motility. J Gen Microbiol. 1977 Feb;98(2):329–337. doi: 10.1099/00221287-98-2-329. [DOI] [PubMed] [Google Scholar]
- Segel L. A., Jackson J. L. Theoretical analysis of chemotactic movement in bacteria. J Mechanochem Cell Motil. 1973 May;2(1):25–34. [PubMed] [Google Scholar]
- Thonemann P. C., Evans C. J. The dispersal of an initial concentration of motile bacteria. J Gen Microbiol. 1976 Jan;92(1):25–31. doi: 10.1099/00221287-92-1-25. [DOI] [PubMed] [Google Scholar]