Katalog - Lichenological literature

39259

Ghlimová H. (2026): Lišejníky, přehlížení hrdinové, Vesmír, 105/1: 2–5

[in Czech] a popular paper entitled: Lichens, overlooked heroes Read more...

39258

Weber L., Niittynen P. & Kantelinen A. (2026): Lichens in times of climate change – impacts and responses especially in boreal and polar ecosystems, MycoKeys, 128: 29–72

Climate change and biodiversity loss are among the most pressing issues of our time. Lichens have been shown to be sensitive to climate change, but responses are species-specific and contradictory trends have been reported. This review addresses lichen biology in relation to climate change and we overview the responses of lichens (e.g. biotic interactions, species distribution shifts and lichen acclimatisation, adaptation and extinction) to climate (e.g. temperature, precipitation, CO2-levels, snow). … Read more...

39257

Takenaka Y., Tanahashi T., Nagakura N. & Hamada N. (2000): Production of xanthones with free radical scavenging properties, emodin and sclerotiorin by the cultured lichen mycobionts of Pyrenula japonica, Zeitschrift für Naturforschung C, 55: 910–914

From the cultures of the spore-derived mycobionts of the lichen Pyrenula japonica, two new xanthones, 1,8-dihydroxy-3-hydroxymethyl-5-methoxyxanthone and 1,2,8-trihydroxy-5-methoxy-3-methylxanthone, were isolated along with 1,7-dihydroxy-3-methylxanthone, 1,5,8-trihydroxy-3-methylxanthone, 1,8-dihydroxy-5-methoxy-3-methylxanthone, emodin and sclerotiorin. Their structures were determined by spectroscopic methods. Sclerotiorin was isolated for the first time from lichen mycobionts. Radical scavenging … Read more...

39256

Muriel S., Hurtado P., Martínez I., Aragón G., Di Nuzzo L., García R. & Prieto M. (2026): Integrating functional, taxonomic, and phylogenetic diversity to explain lichen biocrust responses to edaphic and climatic drivers, Fungal Ecology, 80: 101495 [12 p.]

Lichens are bioindicators due to their sensitivity to environmental variables. As key constituents of biological soil crusts in gypsum-rich arid ecosystems, their links to abiotic factors offer insights into ecological processes. We studied lichen community responses to environmental variation in gypsum soils in Spain. Sampling was conducted in 35 plots, estimating lichen cover to quantify taxonomic diversity (TD), calculate functional diversity (FD) assessing and measuring qualitative and quantitative … Read more...

39255

Ramírez-Peña D.A., Pérez-Pérez R.E., Cultid-Medina C.A., Lücking R. & Lira-Noriega A. (2026): The lichen biota of the threatened mexican tropical montane cloud forests: diversity, ecogeography and knowledge shortfalls, Biodiversity and Conservation, 35: 52 [24 p.]

Mexican Tropical Montane Cloud Forests (TMCF) constitute a unique ecosystem at the intersection of Nearctic and Neotropical biotas. Lichens are an important component of this ecosystem, yet studies on lichenized fungi in Mexican TMCF remain scarce. Here, we compiled and analyzed data on lichenized fungi associated with Mexican TMCF, evaluating species richness, beta diversity, functional diversity, and their relationships with habitat suitability, connectivity, environmental distance, and arboreal … Read more...

39254

Baláž M., Goga M., Hegedüs M., Daneu N., Kováčová M., Tkáčiková Ľ., Balážová Ľ. & Bačkor M. (2020): Biomechanochemical solid-state synthesis of silver nanoparticles with antibacterial activity using lichens, ACS Sustainable Chemistry and Engineering, 37: 13945–13955

A completely solid-state mechanochemical synthesis of silver nanoparticles overcoming the problem with water insolubility of lichen metabolites hampering their use for the classical green synthesis in water is shown herein. Four lichen species (Xanthoria elegans, Cetraria islandica, Usnea antarctica, and Leptogium puberulum) and AgNO3 were used as reducing agents and Ag(0) precursor, respectively. The reaction progress was rapid in the first two cases, whereas in the case of U. antarctica and L. … Read more...

39253

Witherspoon C.M. & Lendemer J.C. (2026): Noteworthy records of three Usnea species from the New York Adirondacks, Evansia, 42(4): 69–81

The fruticose lichen genus Usnea, Old Man's Beard lichens, is well-recognized, charismatic and conspicuous, and readily detected during biodiversity surveys. As a result, the genus is well-represented in herbaria and the geographic ranges of the species are presumed to be thoroughly documented. During ecological fieldwork in the Adirondack Mountains of New York, however, we discovered three unexpected Usnea species. Here we report modern occurrences of two Usnea species previously known only from … Read more...

39252

Cohen P.A. & Towers G.H.N. (1995): Anthraquinones and phenanthroperylenequinones from Nephroma laevigatum, Journal of Natural Products, 58(4): 520–526

Four anthraquinones and two phenanthroperylenequinones were isolated from the lichen Nephroma laevigatum. The structures were established from their spectral data as emodin [1], 7-chloroemodin [2], 7-chloro-1-O-methylemodin [3], 7-chloro-1-O-methyl-hydroxyemodin [4], 7,7'-dichlorohypericin [5], and 2,2',7,7 '-tetrachlorohypericin [6]. Compounds 4-6 have not been reported previously. 7,7'-Dichlorohypericin [5] and 2,2',7,7'-tetrachlorohypericin [6l were also synthesized and characterized spectroscopically. Read more...

39251

Goel M., Dureja P., Rani A., Uniyal P.L. & Laatsch H. (2011): Isolation, characterization and antifungal activity of major constituents of the Himalayan lichen Parmelia reticulata Tayl., Journal of Agricultural and Food Chemistry, 59(6): 2299–2307

Antifungal activity of hexane, ethyl acetate and methanol extracts of Parmelia reticulata was evaluated against soilborne pathogenic fungi, namely, Sclerotium rolfsii, Rhizoctonia solani, R. bataticola, Fusarium udum, Pythium aphanidermatum and P. debaryanum by poisoned food technique. Maximum antifungal activity was exhibited by hexane and ethyl acetate extracts against most of the test pathogens. Secondary metabolites, namely, (±)-isousnic acid, (±)-protolichesterinic acid, atranorin, evernyl, … Read more...

39250

Wezeman T., Bräse S. & Masters K.-S. (2015): Xanthone dimers: a compound family which is both common and privileged, Natural Product Reports, 32: 6–28

Xanthone dimers are a widespread, structurally-diverse family of natural products frequently found in plants, fungi and lichens. They feature an intriguing variety of linkages between the component xanthones (benzannulated chromanones). These synthetically elusive secondary metabolites are of great interest due to their broad array of bioactivities, which has led to the xanthones being designated as ‘privileged structures’. We seek herein to give an overview of all reliably-described xanthone … Read more...