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Asian Journal of Plant Pathology
Year: 2008  |  Volume: 2  |  Issue: 1  |  Page No.: 15 - 23

Effect of Bacterial Isolates Obtained from Animal Manure Compost Extracts on the Development of Fusarium oxysporum f. sp. radicis-lycopersici

Amel Kerkeni, Mejda Daami-Remadi, Neji Tarchoun and Mohamed Ben Khedher    

Abstract: Dual culture of some bacterial isolates obtained from animal manure compost extracts with F. oxysporum f. sp. radicis-lycopersici, the causal agent of the Fusarium Crown and Root Rot of tomato, significantly inhibited the in vitro development of the pathogen comparatively to the untreated control. Among 14 isolates tested, 8 inhibited by 38 to 47% the mycelial growth of F. oxysporum f. sp. radicis-lycopersici. The transplantation of tomato seedlings (cv. Riogrande) in peat, previously treated by bacterial suspensions and inoculated with a conidial suspension of the pathogen (107 spores mL-1), significantly reduced the Fusarium Crown and Root Rot severity compared to the untreated control. The most effective isolates were identified by means of the API system, as Chryseomonas luteola, Serratia liquifaciens and Aeromonas hydrophila.

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