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    Bacteriocins contributing in Rhizospheric competition among Fluorescent Pseudomonads

    Mezaache-Aichour, S. and Haichour, N. and Guechi, A. and Nicklin, Jane and Zerroug, M. (2016) Bacteriocins contributing in Rhizospheric competition among Fluorescent Pseudomonads. Annual Research and Review in Biology 11 (4), pp. 1-9. ISSN 2347-565X.

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    Aims: To examine the production of bacteriocins through the study of a group of rhizospheric Pseudomonas isolates already known to produce metabolites that are antagonistic to fungi. Methodology: Fourteen rhizospheric strains of fluorescent Pseudomonads spp., were tested as well as two referenced strains Pseudomonas protogens CHA0 and Pseudomonas aureofaciens 30-84, for their ability to produce induced bacteriocins. The induction is carried out first by UV light, and secondly by mitomycin C. Results: In addition to the reference strains, six isolates were found to produce bactericidal substances after UV light induction against Pseudomonas target bacteria but also against other genera (Escherichia and Staphylococcus). Producing strains were treated with mitomycin C, and then lysed with chloroform. Analysis of the lysates by trypsin and freezing treatments, suggests that the active compounds are of high molecular weight. Conclusion: It is therefore suggested that these bacteria could be good competitors for their introduction as biocontrol agents.


    Item Type: Article
    Keyword(s) / Subject(s): Biocidal induced molecules, establishment, proteases resistance, non-pathogenic soil bacteria
    School: Birkbeck Faculties and Schools > Faculty of Science > School of Natural Sciences
    Depositing User: Administrator
    Date Deposited: 01 Jun 2017 08:19
    Last Modified: 02 Aug 2023 17:33


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