Quinone Profiles Reflecting Population Dynamics of Denitrifying Phosphate-Accumulating Organisms

Satoshi Tsuneda, Takashi Ohno, Johwan Ahn, Tomotaka Daidou, Akira Hirata

    Research output: Contribution to journalArticle

    5 Citations (Scopus)


    Selective enrichment of phosphate-accumulating organisms (PAOs) and denitrifying phosphate-accumulating organisms (DNPAOs) was conducted using a sequencing batch reactor (SBR). To elucidate biomarkers for DNPAOs, quinone profiles were monitored during selective enrichment. As a result, a high correlation between the mole fraction of ubiquinone with eight isoprene units (Q-8) and anoxic phosphate uptake ability was observed, indicating that Q-8 was one of the biomarkers for DNPAOs. In addition, the mole ratio of ubiquinones to menaquinones (Q/MK) increased throughout this selective enrichment.

    Original languageEnglish
    Pages (from-to)69-73
    Number of pages5
    JournalMicrobes and Environments
    Issue number2
    Publication statusPublished - 2003



    • denitrifying phosphate-accumulating organisms (DNPAOs)
    • enhanced biological phosphorus removal (EBPR)
    • phosphate-accumulating organisms (PAOs)
    • quinone profile

    ASJC Scopus subject areas

    • Ecology, Evolution, Behavior and Systematics
    • Soil Science
    • Plant Science

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