Interactive optical trapping shows that confinement is a determinant of growth in a mixed yeast culture

N. Arneborg, H. Siegumfeldt, G.H. Andersen, P. Nissen, V.R. Daria, P.J. Rodrigo, J. Glückstad

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Applying a newly developed user-interactive optical trapping system, we controllably surrounded individual cells of one yeast species, Hanseniaspora uvarum, with viable cells of another yeast species, Saccharomyces cerevisiae, thus creating a confinement of the former. Growth of surrounded and non-surrounded H. uvarum cells was followed under a microscope by determining their generation time. The average generation time of surrounded H. uvarum cells was 15% higher than that of non-surrounded cells thereby showing that the confinement imposed by viable S. cerevisiae cells on H. uvarum inhibits growth of the latter. This study is the first to demonstrate that confinement is a determinant of growth in a microbial ecosystem. (c) 2005 Federation of European Microbiological Societies. Published by Elsevier B.V. All rights reserved.
    Original languageEnglish
    JournalF E M S Microbiology Letters
    Volume245
    Issue number1
    Pages (from-to)155-159
    ISSN0378-1097
    DOIs
    Publication statusPublished - 2005

    Keywords

    • interactive optical trapping
    • confinement
    • growth inhibition
    • yeast

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