World Journal of
Pharmaceutical and Life Sciences

VARIATION IN PATHOGENICITY OF FUSARIUM OXYSPORUM F. SP. ALBEDINIS ON TWO CULTURES ASSOCIATED WITH DATE PALM OF MOROCCAN OASIS

Fadoua Sghir, Jihane Touati, Btissam Mouria, Amina Ouazzani Touhami, Abdelkarim Filali-Maltouf, Cherkaoui El Modafar, Abdelmajid Moukhli, Rachid Benkirane and Allal Douira*

ABSTRACT

Surveys, conducted in the palm groves of Tafilalet and Zagora, allowed to isolate a large number of F. oxysporum f sp. albedinis isolates from the roots and wilted palms. In the bibliography, this pathogen is specifically subservient to the date palm, but cannot induce disease to associated species. In this study, the variability of the pathogenicity of the fungus was tested on two unusual hosts, tomatoe and eggplant. In tomato plants, the FA5 isolate of F. oxysporum f. sp. albedinis has led symptoms such as yellowing followed by necrosis, dryings out and leaves falling. Sometimes, yellowing is followed by blanching. By cons, these symptoms were not observed in inoculated eggplants. Dwarfing indices (DI) and leaf alteration indices (LAI) identified in the inoculated tomato plants are greater, respectively 80% and 0.812 compared to those of eggplant, respectively 56% and 0.689. The root and vegetative masses, the number of flowers, leaf number, number of fruits, are very altered. The fungus was reisolated from all parts of the inoculated plants (root, hypocotyl and epicotyl). The variability of parasitic specificity of F. oxysporum f sp. albedinis was discussed in this study.

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