NDLI: Correlation between synthesis variation of 2-alkylquinolones and the antifungal activity of a Burkholderia cepacia strain collection.

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Correlation between synthesis variation of 2-alkylquinolones and the antifungal activity of a Burkholderia cepacia strain collection.

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Correlation between synthesis variation of 2-alkylquinolones and the antifungal activity of a Burkholderia cepacia strain collection.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Kilani-Feki, Olfa Zouari, Imen Culioli, Gérald Ortalo-Magné, Annick Zouari, Nabil Blache, Yves Jaoua, Samir
Description	Country affiliation: Tunisia Author Affiliation: Kilani-Feki O ( Equipe Biopesticides L.P.A.P, Centre de Biotechnologie de Sfax, Université de Sfax, P.O. Box 1177, Sfax, 3018, Tunisie.)
Abstract	Twenty epiphytic and rhizospheric bacterial strains harbouring strong antifungal activities were isolated from the Tunisian environment. This group of bacteria was identified as Burkholderia cepacia genomovar I using 16S rDNA and recA fragment gene sequence analyses for two selected strains and RFLP technique for the eighteen other ones. This identification did not show variability between isolates despite the significant differences in the antifungal activities of their culture supernatant and the organic crude extract against Aspergillus niger and other phytopathogenic fungi. Chromatographic and mass spectrometric analyses of these extracts allowed us to confirm the difference between strains of the group. Their metabolic production showed differences in term of contents and quantities of secreted molecules, particularly those which were identified to be involved in the antifungal activities. Two metabolites, named Bc-255 and Bc-257 secreted by the entire group at different amounts, have been purified and tested separately against A. niger. Bc-255 showed an activity twice as high as those shown by Bc-257. The structural characterization of these two compounds by mass spectrometry and nuclear magnetic resonance spectroscopy allowed their identification as two analogous 2-alkylquinolones with only one difference at the alkyl chain.
File Format	HTM / HTML
ISSN	09593993
Issue Number	1
Volume Number	28
e-ISSN	15730972
Journal	World Journal of Microbiology and Biotechnology
Language	English
Publisher	Springer
Publisher Date	2012-01-01
Publisher Place	Germany
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Genes, Bacterial Research Support, Non-u.s. Gov't Discipline Microbiology Biological Control Agents Microbiology Prevention & Control Isolation & Purification Pharmacology Aspergillus Niger Chromatography, High Pressure Liquid Metabolism Drug Effects Journal Article Discipline Biotechnology Quinolones Pathogenicity Fungi Dna, Bacterial Base Sequence Burkholderia Cepacia Complex Genetics Antifungal Agents Molecular Structure Plant Diseases
Content Type	Text
Resource Type	Article
Subject	Physiology Medicine Applied Microbiology and Biotechnology Biotechnology

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