فهرست نشریات علمی دسترسی آزاد ایران

Background: Despite the wide diversity of the basic growth forms (crustose, squamulose, foliose, and fruticose), all lichens have a similar internal morphology. The bulk of the lichen’s body is formed from filaments of the fungal partner, and the relative density of these filaments defines the layers within the lichen. Objectives: To continue and complete the previous study, this study was designed to assess the antibacterial and antifungal activity of different extractions of lichens. Results: Among the six tested lichens, methanol extracts of P. squamulosum , P. biziana , and L. prophetae-eliae showed relatively high antibacterial activities and also the acetone extraction of L. prophetae-eliae showed antibacterial activity against S. epidermidis and B. cereus . The bacteria were more sensitive than the fungi. The methanol extract of P. squamulosum showed the highest antibacterial activity; besides, the least amount of MIC value was 250 mg/mL. Conclusions: It seems that the tested lichens could be effective as antibiotics; especially, in terms of drug resistance, they can be proper substitutes; but, further studies are suggested.