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La fusariose est l'une des maladies les plus devastatrices des cultures, notamment de la tomate, du cotonnier, du bananier, etc. Ce travail a ete mene afin d'identifier des plantes de la flore de Cote d'Ivoire susceptibles de jouer un role dans la protection de ces cultures contre ces agents mycopathogenes. Trente six extraits bruts (28 extraits methanoliques et 8 extraits dichloromethaniques) provenant de 20 especes vegetales issues de 13 familles ont ete prepares et testes contre Fusarium oxysporum f. sp. vasinfectum et Fusarium oxysporum f. sp. lycopersici . Ces essais antifongiques effectues par bioautographie, ont revele que 8 extraits, soit 22,22 % ont ete actifs contre F. oxysporum f. sp. vasinfectum et F. oxysporum f. sp. lycopersici. Les extraits les plus prometteurs ont ete ceux obtenus a partir des graines de Zanthoxylum zanthoxyloides (Lam.) et des racines de Erythrina senegalensis A. DC. Les chromatogrammes sur couche mince ont revele que les extraits de ces 2 plantes renferment plus de deux composes actifs. Mots cles : Plantes medicinales, antifongique, bioautographie, fusariose, Cote d'Ivoire Fusariosis are among the most devastating diseases in crops, especially in tomato, cotton and banana. This study was carried out in order to identify plants, from the flora of Cote d'Ivoire, capable of playing a role in the protection of crops against mycopathogen agents. Thirty six extracts (28 methanolic and 8 dichloromethane), from 20 plant species and 13 families were obtained and Fusarium oxysporum f. sp. vasinfectum and Fusarium oxysporum f. sp. lycopersici were exposed to these extracts. Antifungal assays, using bioautography, revealed that 8 extracts (22.22 %) were active against F. oxysporum f. sp. vasinfectum and F. oxysporum f. sp. lycopersici. The most promising extracts were from the seeds of Zanthoxylum zanthoxyloides (Lam.) and the roots of Erythrina senegalensis A. DC. Thin layer chromatograms showed that the extracts of the 2 plants contained more than 2 active compounds.

Evaluation De L’activite Antifongique Par Bioautographie De Quelques Plantes Medicinales De Côte D’ivoire Contre Deux Formes Speciales De Fusarium Oxysporum