First inventory of lichens and lichenicolous fungi in the Khosrov Forest State Reserve, Armenia

Gasparyan, Arsen; Aptroot, André; Moreno, Ana Rosa Burgaz; Otte, Volker; Zakeri, Zakieh; Rico, Vı́ctor J.; Araújo, Elena; Crespo, Ana; Divakar, Pradeep K.; Lumbsch, H. Thorsten

doi:10.7320/flmedit25.105

Cited by 10 publications

(2 citation statements)

References 2 publications

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“…In this context Armenia is a crossroad also for variety of rare and still unexplored lichens' species [17].…”

Section: Discussionmentioning

confidence: 99%

“…antifungal, antibacterial, antiviral, antitumor, cytotoxic, analgesic, antipyretic properties) of lichens sampled from different regions of the glob has been investigated [6, [13][14][15]. Despite its small territory Armenia is a crossroad for variety of rare lichens' species [16,17], biodiversity and biotechnological potential of which, still remains unexplored.…”

Section: Introductionmentioning

confidence: 99%

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Antimicrobial and Antioxidant Potentials of Non-cytotoxic Extracts of Corticolous Lichens Sampled in Armenia

Sargsyan

Gasparyan

Tadevosyan³

et al. 2021

Preprint

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Due to wide range of secondary metabolites, lichens were used from antiquity as sources of colorants, perfumes and medicaments. This research focuses on exploring the antioxidant, antimicrobial and cytotoxic activities of methanol, ethanol, acetone extracts and aqueous infusions of corticolous lichens sampled from Armenia. Methanol, ethanol and acetone extracts from all tested lichens were active against Gram-positive bacterial strains. The most effective solvent to retrieve antimicrobial compounds was methanol. Aqueous infusions of tested lichens didn’t show any significant antibacterial and antifungal activity. The highest antimicrobial activity was observed for methanol extract of Ramalina sinensis. The minimum inhibitory concentration of methanol extract of Ramalina sinensis were 0.9 to 1.8 mg mL-1. Pseudevernia furfuracea demonstrated antifungal activity (Ø 12 mm). Methanol extract of Parmelia sulcata demonstrated largest DPPH radical scavenging activity (71%). The cytotoxicity was measured on human HeLa (cervical carcinoma) cell lines using microculture tetrazolium test assay. The IC50 values estimated for methanol extracts of Peltigera praetextata, Evernia prunastri, R. sinensis and R. farinacea species in HeLa cell line were within 1.8-2.8 mg mL-1 and considered as non-cytotoxic. Obtained results suggest that studied lichens can be prospective in biotechnologies as alternative sources of antimicrobial and antioxidant substances.

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“…In this context Armenia is a crossroad also for variety of rare and still unexplored lichens' species [17].…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Antimicrobial and Antioxidant Potentials of Non-cytotoxic Extracts of Corticolous Lichens Sampled in Armenia

Sargsyan

Gasparyan

Tadevosyan³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

Antimicrobial and antioxidant potentials of non-cytotoxic extracts of corticolous lichens sampled in Armenia

et al. 2021

View full text Add to dashboard Cite

Due to wide range of secondary metabolites, lichens were used from antiquity as sources of colorants, perfumes and medicaments. This research focuses on exploring the antioxidant, antimicrobial and cytotoxic activities of methanol, ethanol, acetone extracts and aqueous infusions of corticolous lichens sampled from Armenia. Methanol, ethanol and acetone extracts from all tested lichens were active against Gram-positive bacterial strains. The most effective solvent to retrieve antimicrobial compounds was methanol. Aqueous infusions of tested lichens didn’t show any significant antibacterial and antifungal activity. The highest antimicrobial activity was observed for methanol extract of Ramalina sinensis. The minimum inhibitory concentration of methanol extract of Ramalina sinensis were 0.9–1.8 mg mL− 1. Pseudevernia furfuracea demonstrated antifungal activity (Ø 12 mm). Methanol extract of Parmelia sulcata demonstrated largest 1,1-diphenyl-2-picryl-hydrazil (DPPH) radical scavenging activity (71 %). The cytotoxicity was measured on human HeLa (cervical carcinoma) cell lines using microculture tetrazolium test assay. The IC50 values estimated for methanol extracts of Peltigera praetextata, Evernia prunastri, Ramalina sinensis and Ramalina farinacea species in HeLa cell line were within 1.8–2.8 mg mL− 1 and considered as non-cytotoxic. Obtained results suggest that studied lichens can be prospective in biotechnologies as alternative sources of antimicrobial and antioxidant substances.

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Verrucaria juglandis, a New Corticolous Lichen Species from Armenia

Gasparyan¹,

Aptroot²

2016

Herzogia

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First inventory of lichens and lichenicolous fungi in the Khosrov Forest State Reserve, Armenia

Cited by 10 publications

References 2 publications

Antimicrobial and Antioxidant Potentials of Non-cytotoxic Extracts of Corticolous Lichens Sampled in Armenia

Antimicrobial and Antioxidant Potentials of Non-cytotoxic Extracts of Corticolous Lichens Sampled in Armenia

Antimicrobial and antioxidant potentials of non-cytotoxic extracts of corticolous lichens sampled in Armenia

Verrucaria juglandis, a New Corticolous Lichen Species from Armenia

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