Katalog - Lichenological literature

38300

Yang C., Xiao S., Yan S., Zhang M., Cai Q., Fu S. & Meng Q. (2019): New phomalone derivatives from the endolichenic fungus Cochliobolus kusanoi in Ny-Alesund Arctic, Journal of the Chinese Chemical Society, 66(3): 325-329

Natural products from endolichenic fungi, isolated from different lichen species, have been attracting much attention because of their potential to produce metabolites with activities and/or new structures. The filamentous fungus M227-2 isolated from lichen in Ny-Alesund Arctic showed significant anti-microbial activity and was identified as Cochliobolus kusanoi based on 18S rDNA. Secondary metabolites of M227-2 were investigated in order to exploit them as lead compounds for new antibiotics. Chemical … Read more...

38299

de Moura Baptista L.R., Gasper A.L., Lorscheitter M.L. & Scherer C. (2019): Physiognomic and multivariate phytosociological analyses of a subtropical peat bog located on the Eastern Plateau in southern Brazil, Wetlands, 39: 1069–1077

Subtropical peat bog vegetation in southern Brazil was examined using physiognomic and phytosociological approaches. The analysis included vascular (angiosperms, pteridophytes) and non-vascular species (bryophytes, mat-forming algae, lichens, macroscopic fungi). The breadth of this approach is novel among wetland studies in southern Brazil. The study examined the Banhado Amarelo peat bog (29°19′05″S, 50°08′18″W), which is located in the Brazilian highlands of Rio Grande do Sul (RS) state. … Read more...

38298

Vijaykumar S.D. (2020): Review on advanced methods for extraction and identification of nature-derived bioactive and economic products, , pp. 75-100

In recent years, the interest in the development of procedures for extraction of bioactive compounds from natural sources with more liability gains increased attention globally, due to their potential applications in many sectors such as food and beverages, paper, textile, chemical, and pharmaceutical industries. Problems like consumption of energy and time and solvent quantity are associated with conventional extraction procedures led to demand for alternative techniques for extraction of nature-derived … Read more...

38297

Sujetovienė G., Jasas M., Miškelytė D., Dikšaitytė A., Januškaitienė I., Kacienė G., Dagiliūtė R. & Žaltauskaitė J. (2025): Toxic effects of tetracycline on non-target lichen Evernia prunastri, Journal of Toxicology and Environmental Health, Part A, 88(10): 395–408

Tetracycline (TC) antibiotics are one of the class of drugs widely used in clinical practice but also constitute a significant environmental concern. However, the adverse effects of TC on non-target organisms have not been well studied. The aim of this study was to examine the influence of exposure to high levels of TC on thalli of lichens to determine the impact on (1) physiological parameters including integrity of cell membranes, photosynthetic efficiency and viability, (2) oxidative stress … Read more...

38296

Sebova D., Zilakova S., Medvecova V., Goga M., Frenak R., Bardelcikova A., Mirossay A., Mirossay L., Mojzis J. & Kello M. (2025): Antiproliferative and pro-apoptotic effects of Pseudevernia furfuracea (L.) Zopf extract and its active component physodic acid via oxidative stress and DNA damage in breast cancer cells , Frontiers in Oncology, 15: 1557884 [20 p.]

Background: Mammary gland malignancies are the most diagnosed oncological diseases in women. The currently available treatment faces several problems, including resistance to cytostatics and the relatively high recurrence rates. These limitations have led to an increasing interest in natural substances as potential anticancer agents. Therapeutic approaches using a combination of natural anticancer agent and conventional cytostatic drug could also be beneficial in minimising the risk of chemotherapy. … Read more...

38295

Guan H. & Liu X. (2019): Do biocrust successional stage determine the degradation of vascular vegetation via alterations in its hydrological roles in semi-arid ecosystem?, Ecohydrology, 12(3): e2075

Biocrusts may influence soil moisture by changing soil hydrological properties and thus affect the growth of vascular vegetation. However, their effects on soil moisture and vascular vegetation have not been sufficiently evaluated. In this study, five treatments, including bare land with sporadic cyanobacterial biocrusts (BL), lichen-dominated biocrusts, Artemisia ordosica (AO), A. ordosica with moss biocrusts, and old-aged A. ordosica with moss biocrusts (OAMB), were established to evaluate the … Read more...

38294

Gorbunov A.V., Lyapunov S.M. & Ermolaev B.V. (2019): Distribution of mercury in natural and urban environments of Karelia, Northwest Russia, Ekologiya Cheloveka (Human Ecology), 2019(4): 10-17

We studied accumulation of mercury in the main natural and urban environments of Karelia, Northwest Russia, and assessed potential sources of mercury in a human body. Methods. A total of 200 samples of soil, vegetation, water, surface water, sediments and fish were collected. An analysis of samples was carried out by cold steam atomic absorption method. Diagrams of mercury distribution in soil, birch leaves and lichens were created. Data on fish consumption by the population of Petrozavodsk and Medvezhyegorsk … Read more...

38293

Loppi S., Ravera S. & Paoli L. (2019): Coping with uncertainty in the assessment of atmospheric pollution with lichen transplants, Environmental Forensics, 20(3): 228-233

In the assessment of atmospheric deposition using lichen transplants, coping with uncertainty is mandatory in cases of environmental forensics, when understanding whether an area is polluted or not, or tracing a given pollution source is of paramount importance. In this article, we have suggested a method based on the calculation of exposed-to-control ratios of element concentrations and on the quantification of the overall uncertainty associated with such calculation, which proved to be very robust … Read more...

38292

Ali S. & Hameed H.N. (2019): Antibacterial and antioxidant activity of a chemically induced mutant of Xanthoria parietina, Journal of Animal and Plant Sciences, 29(3): 881-888

Biological active secondary metabolite parietin was extracted from wild-type and mutant strain of lichen Xanthoriaparietina. Six different solvents (acetone, ethanol, methanol, hexane, chloroform and distilled water) were used to extract parietin. The parietin activity was found to be maximum when extraction was carried out with 3 ml of methanol at 30ºC for 1h. The extracts were proceeded to antibacterial activity against different strains of bacteria.Anion DPPH (1,1-Diphenyl-2-picrylhydrazyl) scavenging, … Read more...

38291

Husnunnisa, Ismed F., Taher M., Ichwan S.J.A., Bakhtiar A. & Arbain D. (2019): Screening of some Sumatran medicinal plants and selected secondary metabolites for their cytotoxic potential against MCF-7 and HSC-3 cell lines, Journal of Research in Pharmacy, 23(4): 770-776

In continuation of our study of Sumatran plants and bioactivities of their constituents particularly their cytotoxic activities, we re-extracted lichen Stereocaulon graminosum Schaer (Stereocaulaceae), and isolated atranorin (1) and stictic acid (4).. These isolated compounds have been tested for their cytotoxic activities against human breast adenocarcinoma cancer cell (MCF-7) and human oral squamous carcinoma cancer cell (HSC-3) using MTT assay with a slight modification. Some methanolic extracts … Read more...