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Surface-associated growth

Surface-associated growth
Surface-associated growth

In natural ecosystems, microbial activity is often associated with the presence of a surface, particularly in low-nutrient environments. The chemostat allows the study of such low-nutrient environments together with the precise control of other growth parameters. By using this system, enrichment cultures with inocula from two different river sources have been made. A more diverse community attached itself to surfaces placed in the chemostat when the cultures were carbon-limited than when the limiting nutrient was nitrogen. Further studies on a pseudomonad isolated from the carbon-limited enrichment cultures have shown that surface-associated organisms grow at approximately twice the rate of the same organism in the free surrounding medium. A hypothesis to explain this phenomenon based on the chemiosmotic theory is discussed.

0962-8436
517-532
Ellwood, D. C.
dc74cf9a-6895-42c9-bbd9-46a12236adb1
Keevil, C. W.
cb7de0a7-ce33-4cfa-af52-07f99e5650eb
Marsh, P. D.
9d226405-bfd2-432b-ac22-ea619f706805
Brown, C. M.
e13c6660-0906-4466-9b08-ccbd8b665a11
Wardell, J. N.
81f6fe7c-ba22-4449-be88-11e8712a0e7c
Ellwood, D. C.
dc74cf9a-6895-42c9-bbd9-46a12236adb1
Keevil, C. W.
cb7de0a7-ce33-4cfa-af52-07f99e5650eb
Marsh, P. D.
9d226405-bfd2-432b-ac22-ea619f706805
Brown, C. M.
e13c6660-0906-4466-9b08-ccbd8b665a11
Wardell, J. N.
81f6fe7c-ba22-4449-be88-11e8712a0e7c

Ellwood, D. C., Keevil, C. W., Marsh, P. D., Brown, C. M. and Wardell, J. N. (1982) Surface-associated growth. Philosophical Transactions of The Royal Society B Biological Sciences, 297 (1088), 517-532. (doi:10.1098/rstb.1982.0058).

Record type: Article

Abstract

In natural ecosystems, microbial activity is often associated with the presence of a surface, particularly in low-nutrient environments. The chemostat allows the study of such low-nutrient environments together with the precise control of other growth parameters. By using this system, enrichment cultures with inocula from two different river sources have been made. A more diverse community attached itself to surfaces placed in the chemostat when the cultures were carbon-limited than when the limiting nutrient was nitrogen. Further studies on a pseudomonad isolated from the carbon-limited enrichment cultures have shown that surface-associated organisms grow at approximately twice the rate of the same organism in the free surrounding medium. A hypothesis to explain this phenomenon based on the chemiosmotic theory is discussed.

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More information

Published date: 11 June 1982

Identifiers

Local EPrints ID: 431226
URI: http://eprints.soton.ac.uk/id/eprint/431226
ISSN: 0962-8436
PURE UUID: cc7e9607-52e7-4ced-b037-aec4da7f69cf
ORCID for C. W. Keevil: ORCID iD orcid.org/0000-0003-1917-7706

Catalogue record

Date deposited: 28 May 2019 16:30
Last modified: 29 May 2019 00:35

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