Bactericidal activity of crude extracts from lichen Ramalina pacifica were screened against 20 clinical pathogenic strains isolated from different infectious sources which belong to Pseudomonas aeruginosa, Klebsiella pneumonia, Salmonella typhi, Salmonella paratyphi, Echerichia coli, and Staphylococcus aureus. The minimal inhibitory concentration of petroleum ether extract and ethanol extract w...

Epiphytic lichens possess unique life history traits that can have conflicting effects on genetic structure: symbiotic mutualism between a fungus with its algal or cyanobacterial photobiont, association with a host plant, and ability to reproduce sexually and asexually. Our study species, Ramalina menziesii, has small ascospores that can facilitate long-distance gene movement, and it is capable...

Lichen symbioses are microecosystems hosting many other living organisms besides the two major lichen symbionts (i.e., lichenized fungi [the mycobiont] and green microalgae or cyanobacteria photobiont]). Recent investigations evidenced that fungi, non-photosynthetic bacteria, co-inhabit within thalli, but their diversity roles still underinvestigated. Here we present an ad hoc stratified sampli...

For the first time in this study, effect of nanoparticles (NP) sizes on antimicrobial activity Ag NPs different obtained by reaction Ramalina fraxinea(R. fraxinea) extract and silver nitrate (AgNO3) at concentrations was evaluated. purpose, characteristic light absorption points, charge surface were determined ultraviolet-visible spectroscopy (UV-Vis), zeta potential, hydrodynamic diameters dyn...

Lichens are slow-growing associations of fungi and green algae or cyanobacteria. This symbiotic association forms a common thallus that does not possess roots or a waxy cuticle and depends mainly on atmospheric input of mineral nutrients. The lifestyle of most lichens is composed of alternating periods of desiccation with low metabolic activity and hydration that induces increase in their metab...

In the present investigation, effects of Ramalina capitata acetone extract on micronucleus distribution on human lymphocytes, on cholinesterase activity and antioxidant activity (by the CUPRAC method) were examined, for the first time as well as its HPLC profile. Additionally, total phenolic compounds (TPC), antioxidant properties (estimated via DPPH, ABTS and TRP assays) and antibacterial acti...