Expression Of The Geosmin Synthase Gene In The Cyanobacterium Anabaena Circinalis Awqc318

Steven Giglio, Chris Saint, Paul Monis

    Research output: Contribution to journalArticlepeer-review

    24 Citations (Scopus)


    The occurrence of taste and odor episodes attributed to geosmin continues to trouble water utilities worldwide, and only recently have advances been made in our fundamental understanding of the biochemical and genetic mechanisms responsible for the production of geosmin in microorganisms. For the first time, we have examined the expression of the geosmin synthase gene and corresponding geosmin production by Anabaena circinalis Rabenh. ex Bornet et Flahault AWQC318 under conditions of continuous light illumination and the removal of light as a stimulus and demonstrate that the expression of geosmin synthase appears to be constitutive under these conditions. The decrease in geosmin synthase transcription post maximum cell numbers and stationary phase suggests that a decrease in isoprenoid synthesis may occur before a decrease in the transcription of ribosomal units as the process of cell death is initiated.

    Original languageEnglish
    Pages (from-to)1338-1343
    Number of pages6
    JournalJournal of Phycology
    Issue number6
    Publication statusPublished - Dec 2011


    • Expression
    • Gene
    • Geosmin
    • Odor
    • Taste


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