JJH Katalog - Lichenological literature

35517

Kalra R., Conlan X.A. & Goel M. (2023): Recent advances in research for potential utilization of unexplored lichen metabolites - Biotechnology Advances, 62: 108072

Several research studies have shown that lichens are productive organisms for the synthesis of a broad range of secondary metabolites. Lichens are a self-sustainable stable microbial ecosystem comprising an exhabitant fungal partner (mycobiont) and at least one or more photosynthetic partners (photobiont). The successful symbiosis is responsible for their persistence throughout time and allows all the partners (holobionts) to thrive in many extreme habitats, where without the synergistic relationship … Read more...

35518

Mercado-Díaz J.A., Lücking R., Moncada B., Campbell K.C.S.E., Delnatte C., Familia L., Falcón-Hidalgo B., Motito-Marín A., Rivera-Queralta Y., Widhelm T.J. & Lumbsch H.T. (2023): Species assemblages of insular Caribbean Sticta (lichenized Ascomycota: Peltigerales) over ecological and evolutionary time scales - Molecular Phylogenetics and Evolution, 186: 107830 [16 p.]

Phylogenetic approaches to macroevolution have provided unique insight into evolutionary relationships, ancestral ranges, and diversification patterns for many taxa. Similar frameworks have also been developed to assess how environmental and/or spatial variables shape species diversity and distribution patterns at different spatial/temporal scales, but studies implementing these are still scarce for many groups, including lichens. Here, we combine phylogeny-based ancestral range reconstruction and … Read more...

35519

Nirhamo A., Pykälä J., Jääskeläinen K. & Kouki J. (2023): Habitat associations of red-listed epiphytic lichens in Finland - Silva Fennica, 57: 22019

The Finnish red list shows that the epiphytic lichen flora of Finnish forests is highly threatened and declining steeply. Red lists provide limited information on the habitat associations of threatened species, which could be relevant in informing management and conservation measures. We used documented empirical data and expert assessments to determine for each red-listed (IUCN categories Near Threatened, NT; Vulnerable, VU; Endangered, EN; Critically Endangered, CR; Regionally Extinct, RE) epiphytic … Read more...

35545

Chesnokov S.V., Davydov E.A., Konoreva L.A., Prokopiev I.A., Poryadina L.N., Zheludeva E.V. & Shavarda A.L. (2023): The monotypic genus Flavocetraria and two new genera: Cladocetraria and Foveolaria, in the cetrarioid core - Plant Systematics and Evolution, 309: 24 [17 p.]

Data on morphology, anatomy, secondary chemistry, ecology, as well as phylogenetic reconstructions based on ITS/5.8S and mtSSU sequence data suggest that “Flavocetraria” minuscula should be transferred to a new monotypic genus Cladocetraria, phylogenetically related to “Cetraria” obtusata and Cetrariella. Cladocetraria minuscula is morphologically similar to Flavocetraria cucullata especially in miniature forms, but differs from this species in having helmet-shaped tips wrapped inside (up-turned) … Read more...

35546

Zulfiqar R. & Khalid A.N. (2023): A novel saxicolous species of Circinaria (Megasporaceae, Ascomycota) from Pakistan - Plant Systematics and Evolution , 309: 21 [6 p.]

During a lichen survey of different localities of Pakistan, a novel taxon in genus Circinaria was collected and identified as C. thorstenii. The key characters of C. thorstenii are rimose–areolate thallus surface, absence of lobes, presence of pseudocyphellae, taller hypothecium (35–80 μm), larger ascospores (20–40 × 15–28 μm) and the absence of secondary metabolites. The new species is described and illustrated here, based on morpho-anatomical characters and multigene (ITS, mtSSU, nuLSU) … Read more...

35551

Dutheil P., Paatero J., Rodushkin I., Sundström T., Leppänen A.-P. & Salminen-Paatero S. (2023): 137Cs and isotopic ratios of Pu and U in lichens and mosses from Russian Arctic areas - Environmental Science and Pollution Research, 30: 76769–76783

Knowledge of past anthropogenic sources of radionuclide contamination in Russian Arctic areas is important to assess the radioecological situation of these less-studied regions. Therefore, we investigated the sources of radionuclide contamination in Russian Arctic in the 1990s. Lichen and moss samples were collected from 1993 to 1996 in Kola Peninsula, Franz Josef Land, and few other locations. The activity concentration of (137)Cs was determined from the archived samples by gamma spectrometry in … Read more...

35552

Badiali C., Petruccelli V., Brasili E. & Pasqua G. (2023): Xanthones: Biosynthesis and Trafficking in Plants, Fungi and Lichens - Plants (Basel), 12(4): 36840041

Xanthones are a class of secondary metabolites produced by plant organisms. They are characterized by a wide structural variety and numerous biological activities that make them valuable metabolites for use in the pharmaceutical field. This review shows the current knowledge of the xanthone biosynthetic pathway with a focus on the precursors and the enzymes involved, as well as on the cellular and organ localization of xanthones in plants. Xanthone biosynthesis in plants involves the shikimate and … Read more...

35553

Delves J., Lewis J.E.J., Ali N., Asad S.A., Chatterjee S., Crittenden P.D., Jones M., Kiran A., Pandey B.P., Reay D., Sharma S., Tshering D., Weerakoon G., van Dijk N., Sutton M.A., Wolseley P.A. & Ellis C.J. (2023): Lichens as spatially transferable bioindicators for monitoring nitrogen pollution - Environmental Pollution, 328: 121575 [10 p.]

Excess nitrogen is a pollutant and global problem that harms ecosystems and can severely affect human health. Pollutant nitrogen is becoming more widespread and intensifying in the tropics. There is thus a requirement to develop nitrogen biomonitoring for spatial mapping and trend analysis of tropical biodiversity and ecosystems. In temperate and boreal zones, multiple bioindicators for nitrogen pollution have been developed, with lichen epiphytes among the most sensitive and widely applied. However, … Read more...

35678

Manninen S., Jääskeläinen K., Stephens A., Iwanicka A., Tang S. & van Dijk N. (2023): NH3 concentrations below the current critical level affect the epiphytic macrolichen communities – Evidence from a Northern European City - Science of the Total Environment, 877: 162877 [11 p.]

Acidophytic, oligotrophic lichens on tree trunks are widely considered to be the most sensitive biota to elevated concentrations of atmospheric ammonia (NH3). We studied the relationships between measured NH3 concentrations and the composition of macrolichen communities on the acidic bark of Pinus sylvestris and Quercus robur and the base-rich bark of Acer platanoides and Ulmus glabra at ten roadside and ten non-roadside sites in Helsinki, Finland. NH3 and nitrogen dioxide (NO2) concentrations were … Read more...

35573

Aleksić G., Vasić P. & Jakšić M. (2023): Records of lichen species from genus Acarospora, new for Serbia, southwest Balkan Peninsula - Bulletin of Natural Sciences Research, 13(1): 1–4

The lichens: Acarospora impressula, A. nitrophila, A. nodulosa, A. schleicheri, A. sinopica, A. smaragdula and A. umbillicata, collected in North Kosovo are reported as a new species to Serbia, following a recent lichenological survey. Location, herbarium deposits and substrates are given, together with notes on distribution of the reported taxa. Keywords: Lichens, New records, Biodiversity, Genus Acarospora, R. Serbia. [Note: Images of lichens in the paper likely belong to members of other genera … Read more...