Katalog - Lichenological literature

39204

Torres-Benítez A., Ortega-Valencia J.E., Hillmann-Eggers M., Sanchez M., Pereira I., Gómez-Serranillos M.P. & Simirgiotis M.J. (2025): Chemical composition and antioxidant, enzyme inhibition and cytoprotective activity of two Antarctic lichens of the genus Psoroma (Pannariaceae), Natural Product Research, 39(18): 5165–5178

Lichens contain different types of chemical compounds with multiple biological activities that demonstrate their potential pharmacological use. This research aims to report the metabolomic identification of the ethanolic extracts of P. antarcticum and P. hypnorum, their antioxidant, enzyme inhibitory, and their cytoprotection activity. Sixteen metabolites were identified in P. antarcticum and twelve in P. hypnorum; the extracts reported variable antioxidant activity with IC50 >350 µg/mL in DPPH·, … Read more...

39203

Shukla V., Asati A., Patel D.K., Semwal M., Kumar N. & Upreti D.K. (2017): Metabolic profiling and its plausible environmental significance in a common Himalayan lichen, In: Shukla V., Kumar S. & Kumar N. (eds), Plant adaptation strategies in changing environment, p. 235–251, Springer, Singapore

Metabolomics is an important technique that detects change in the quantitative profile of the organism to observe its response towards diverse genetic alterations and environmental conditions. In the present study, metabolite profiling of Heterodermia diademata, a common foliose lichen in Garhwal Himalayas, has been carried out in different environmental niches within an altitudinal gradients of 700–1850 m a.s.l. especially for its metabolites to decode any environmental significance. Metabolites, … Read more...

39202

Dembitsky V.M. (2017): The multiple properties of some of the lichenized ascomycetes: Biological activity and active metabolites, In: Shukla V., Kumar S. & Kumar N. (eds), Plant adaptation strategies in changing environment, p. 201–234, Springer, Singapore

The main objective of this chapter was to describe the physicochemical and biological characteristics of selected lichenized ascomycetes and the influence of their physiologically active compounds on human health, through scientifically proven information. The chapter presents the biologically active metabolites derived from lichen species (polyphenols, volatile compounds, lipids, phospholipids, fatty acids, and organic acids). Lichens and their metabolites have been demonstrated to possess numerous … Read more...

39201

Armstrong R.A. (2017): Adaptation of lichens to extreme conditions, In: Shukla V., Kumar S. & Kumar N. (eds), Plant adaptation strategies in changing environment, p. 1–27, Springer, Singapore

Lichens exhibit the classic features of stress-tolerant organisms, viz. slow growth rates, considerable longevity, low demand for nutrients, and the presence of specific adaptations to survive in the most inhospitable environments on Earth. The ability of lichens to tolerate the extremes posed by deserts, polar regions, and chemically rich environments involves both morphological and physiological adaptation and changes in ecological behaviour so that species adapt to relatively protected niches … Read more...

39200

Killmann D., Leh B., Herzog J. & Fischer E. (2025): Aktuelle Bestandssituation der Echten Lungenflechte (Lobaria pulmonaria (L.) Hoffm.) im nördlichen Rheinland-Pfalz [Current status of the Tree Lungwort (Lobaria pulmonaria (L.) Hoffm.) in northern Rhineland-Palatinate], Decheniana (Bonn), 178: 35–40

[in German with English abstract: ] The current inventory situation of the tree lungwort (Lobaria pulmonaria), which is threatened with extinction in Germany, is documented in northern Rhineland-Palatinate. The formerly quite large population near Virneburg (Eifel) is in extreme decline and highly threatened by extinction. A new discovery near Bad Bertrich is reported. Key words: lichens; Lobaria pulmonaria; biodiversity; nature conservation; red list. Read more...

39199

de Carolis R., Stoppiello G., Turchetti B., Bartolomeo G., Coleine C., Tetriach M. [recte Tretiach M.], Selbmann L. & Muggia L. (2025): Cryptic associated fungi isolated from Antarctic epilithic lichens of the Victoria Land and the description of five new fungal species, Persoonia, 55: 439–476

Lichen thalli are niches for microorganisms, including microfungi, microalgae and non-photosynthetic bacteria, which form communities of variable composition, often shaped by the environmental conditions under which the lichen thalli develop. In Antarctica lichens represent an important group of organisms characterized by a high percentage of endemism, which have specialized to grow on rocks, as the predominant substrate for colonization. potential role as fungal species hotspots. The culturable … Read more...

39198

Jiang B., Mei S.X., Han Q.B., Xiang W. & Sun H.D. (2001): A new phenolic compound from Thamnolia vermicularis, Chinese Chemical Letters, 12(1): 47–48

A new phenolic compound, thamnolin (1), was isolated from the extract of Thamnolia vermicularis. Its structure was determined as 6-tricosyl-2,4-dimethoxy-phenol by spectral methods. Keywords: Thamnolia vermicularis, phenolic compound, thamnolin. Read more...

39197

Johnston P.R. & Park D. (2025): An updated multigene phylogeny of Leotiomycetes, Persoonia, 55: 527–566

A paper by Johnston and others published in 2019 provided three Leotiomycetes-wide phylogenies, one based on genomes, one a multigene phylogeny with up to 15 genes, and one based on ITS sequences. The genomic and multigene phylogenies provided a backbone phylogeny for the class that has proven to be robust, providing a phylogenetically stable concept for the large order Helotiales. However, a lack of genomic data for the clades outside of Helotiales, towards the root of the tree, meant that relationships … Read more...

39196

Guo J., Li Z.-L., Wang A.-L., Liu X.-Q., Wang J., Guo X., Jing Y.-K. & Hua H.-M. (2011): Three new phenolic compounds from the lichen Thamnolia vermicularis and their antiproliferative effects in prostate cancer cells, Planta Medica, 77(18): 2042–2046

Three new phenolic compounds, thamnoliadepsides A (1), B (2), and thamnolic acid A (3), and seven known compounds, everninic acid (4), baeomycesic acid (5), β-orcinol (6), β-resorcylic acid (7), ethyl orsellinate (8), squamatic acid (9), and vermicularin (10), were isolated from the lichen Thamnolia vermicularis (Sw.) Ach. ex Schaerer. Their structures were determined based on spectroscopic analysis, including 2D-NMR experiments and HR-MS techniques. Compound 1 inhibited growth of prostate cancer … Read more...

39195

Huynh B.L.C., Duong T.H., Do T.M.L., Pinnock T.G., Pratt L.M., Yamamoto S., Watarai H., Tanahashi T. & Nguyen K.P.P. (2016): New γ-lactone carboxylic acids from the lichen Parmotrema praesorediosum (Nyl.) Hale, Parmeliaceae, Records of Natural Products, 10: 332–340

From the lichen Parmotrema praesorediosum (Nyl.) Hale, Parmeliaceae, collected in Vietnam, five new (1, 2, 3, 5, 6) and one known (4) γ -lactonic acids were isolated. The structures of the new compounds were established by 1D and 2D NMR spectroscopy, as well as high resolution-electrospray ionization (HR-ESI)-MS analysis. The absolute configuration of new compounds was determined by ultraviolet circular dichroism spectroscopy. Compounds were evaluated for their cytotoxic activity against HeLa (human … Read more...