Surface-associated growth.

D. C. Ellwood*, C. W. Keevil, P. D. Marsh, C. M. Brown, J. N. Wardell

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    105 Citations (Scopus)


    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.

    Original languageEnglish
    Pages (from-to)517-532
    Number of pages16
    JournalPhilosophical transactions of the Royal Society of London. Series B, Biological sciences
    Issue number1088
    Publication statusPublished - 11 Jun 1982


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