Journal of Applied Phycology

, Volume 5, Issue 3, pp 297–306 | Cite as

Isolation and identification of antialgal substances produced byPseudomonas aeruginosa

  • A. Dakhama
  • J. de la Noüe
  • M. C. Lavoie


Pseudomonas aeruginosa strongly inhibited the growth of green microalgae and cyanobacteria by the release of low molecular weight, thermoresistant factors. The antialgal substances were resistant to various enzymes and remained active in agar after a 3-months storage period at 4 °C in the absence of light. The results indicate that inhibition of algal growth was mediated by the phenazine pigments released by the bacterium. Pyocyanine and an unidentified pale blue pigment had no effect on algal growth, whereas 1-hydroxyphenazine and oxychlororaphine showed strong antialgal activity.

Key words

microalgae antialgal substances phenazines Pseudomonas 


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Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • A. Dakhama
  • J. de la Noüe
  • M. C. Lavoie
    • 1
  1. 1.Département de BiochimieUniversité LavalSainte-FoyCanada

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