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  • Title: [The production of antifungal metabolites by Pseudomonas chlororaphis grown on different nutrient sources].
    Author: Shtark OIu, Shaposhnikov AI, Kravchenko LV.
    Journal: Mikrobiologiia; 2003; 72(5):645-50. PubMed ID: 14679903.
    Abstract:
    It was found that the antifungal activity of Pseudomonas chlororaphis SPB1217 is due to phenazine-1-carboxylic acid, phenazine-1-carboxamide, and two unidentified exometabolites. The carbon source used for the growth of this bacterial strain and iron ions present in the medium considerably influenced the proportion between the antifungal metabolites. The maximum production of phenazines was observed in the media enriched in amino acids and iron ions. The absence of correlation between the production of phenazines and antifungal activity indicates that phenazines are not the only antifungal metabolites of the strain. Organic acids as nutrient sources provide for more intense production of exometabolites and for a higher level of antifungal activity than do sugars.
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