Genetic diversity of Fusarium oxysporum f.sp. albedinis in Morocco
To support the search for palm cultivars resistant to Fusarium oxysporum f.sp. albedinis (EPPO A2 quarantine pest) investigations were carried out in Morocco to determine the genetic diversity of F.oxysporum f.sp. albedinis. As reported at the 6th International Congress of Plant Pathology in Montreal, a collection of 91 isolates from palms, roots and rhizosphere of wilted palm trees, roots from symptomless carriers (lucerne) and soils was constituted and subjected to restriction fragment length polymorphism (RLFP) and random amplified polymorphic DNA analysis (RAPD). Three groups were distinguished containing all isolates isolated from roots and which were closely related. A fourth group contained all the other isolates from soil. The authors concluded that such a genetic homogeneity between palm tree isolates suggests a clonal origin for the Moroccan populations of F. oxysporum f.sp. albedinis.
Tantaoui, A; Fernandez, E.; Geiger, J.P. (1993) RFLP and RAPD analysis of genetic diversity in a Fusarium oxysporum f.sp. albedinis Moroccan population.
Presentation at the 6th International Congress of Plant Pathology, Montreal, CA, 1993-07/08-27/06.