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AuthorKilani-Feki, Olfa
AuthorCulioli, Gerald
AuthorOrtalo-Magne, Annick
AuthorZouari, Nabil
AuthorBlache, Yves
AuthorJaoua, Samir
Available date2015-12-24T06:17:23Z
Publication Date2011-05
Publication NameCurrent Microbiology
CitationKilani-Feki, Olfa, et al, (2011), "Environmental Burkholderia cepacia Strain Cs5 Acting by Two Analogous Alkyl-Quinolones and a Didecyl-Phthalate Against a Broad Spectrum of Phytopathogens Fungi", 62(5):1490–1495.
ISSN1432-0991 (online)
AbstractAn environmental Burkholderia cepacia strain named Cs5 was isolated and identified first using API biochemical identification system and then with 16S rDNA and recA sequence homology search. This bacterium exhibited a broad spectrum of fungicidal activities against Alternaria alternata, Aspergillus niger, Fusarium culmorum, F. graminearum, F. oxysporum and Rhizoctonia solani. In the liquid conditions, the MIC of A. niger and R. solani were reached with, respectively, 1.25-2% of the Cs5 liquid culture supernatant. However, in the solid conditions, the same inhibition was caused in the presence of 3% of the Cs5 supernatant. The exhibition of these two fungi at low concentrations of supernatant Cs5 caused various morphological changes of their mycelia which were observed by confocal microscopy. Three antifungal compounds, named Cs5-255, Cs5-257 and Cs5-446, were purified from the Cs5 culture. The structural analysis of these molecules showed that Cs5-255 and Cs5-257 are analogous and belonged to the alkyl-quinolone family, while Cs5-446 was a didecyl-phthalate, isolated for the first time from a bacterium.
SponsorMinistere de l’Enseignement Superieur et de la Recherche Scientifique
SubjectAntifungal Molecule
SubjectCulture Supernatant
SubjectGrowth Inhibition Assay
SubjectAntimicrobial Activity
SubjectStandard Serial Dilution Method
TitleEnvironmental Burkholderia cepacia strain CS5 acting by two analogous alkyl-quinolones and a didecyl-phthalate against a broad spectrum of phytopathogens fungi
Issue Number5
Volume Number62

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