Antifungal Activity of Aqueous Extracts of Some Dominant Algerian Medicinal Plants.

Aim: This study investigated the antifungal properties of aqueous extracts obtained from indigenous plants that grow spontaneously in the Northern Sahara of Algeria. The activities of these plants in controlling two fungal species that belong to Fusarium genus were evaluated in an in vitro assay.

Materials and Methods: Fresh aerial parts of four plant species ( Artemisia herba alba, Cotula cinerea, Asphodelus tenuifolius , and Euphorbia guyoniana ) were collected for the preparation of aqueous extracts. Two levels of dilution (10% and 20%) of the pure extracts were evaluated against Fusarium graminearum and Fusarium sporotrichioides .

Results: The results of this study revealed that the A. herba alba , C. cinerea, A. tenuifolius , and E. guyoniana aqueous extracts are effective at both concentrations of 10% and 20% for the Fusarium mycelia growth inhibition. In particular, A. tenuifolius extract is effective against F. graminearum , whereas F. sporotrichioides mycelium growth is strongly affected by the E. guyoniana 20% extract. The phytochemical characterization of the compositions of the aqueous extracts has revealed that the presence of some chemical compounds (tannins, flavonoids, saponins, steroids, and alkaloids) is likely to be responsible for the antifungal activities sought.

Conclusion: The antifungal properties of A. herba alba , C. cinerea , A. tenuifolius , and E. guyoniana make these plants of potential interest for the control of fungi affecting both wheat yield and safety.