Katalog - Lichenological literature

33583

Simijaca D., Lücking R. & Moncada B. (2021): Two new species of Astrothelium (Trypetheliaceae) with amyloid ascospores inhabiting the canopy of Quercus humboldtii trees in Colombia, Phytotaxa, 508(2): 229–234

Subandine and high Andean forests are often dominated by oak trees and these are recognized as suitable phorophytes for diverse epiphyte communities. Among the latter, lichens in the upper strata appear to be understudied. Here, we report the discovery of two new species of Astrothelium (Trypetheliaceae), a diverse genus of tropical crustose lichens, both with the unusual feature of muriform, amyloid ascospores. Astrothelium mordonialensis is characterized by an olive-green thallus with solitary … Read more...

33584

Chi J., Lee H., Hong S.G. & Kim H.-C. (2021): Spectral characteristics of the Antarctic vegetation: A case study of Barton Peninsula, Remote Sensing, 13(13): 2470 [21 p.]

Spectral information is a proxy for understanding the characteristics of ground targets without a potentially disruptive contact. A spectral library is a collection of this information and serves as reference data in remote sensing analyses. Although widely used, data of this type for most ground objects in polar regions are notably absent. Remote sensing data are widely used in polar research because they can provide helpful information for difficult-to-access or extensive areas. However, a lack … Read more...

33585

Wethalawe A.N., Alwis Y.V., Udukala D.N. & Paranagama P.A. (2021): Antimicrobial compounds isolated from endolichenic fungi: A review, Molecules, 26(13): 3901 [17 p.]

A lichen is a symbiotic relationship between a fungus and a photosynthetic organism, which is algae or cyanobacteria. Endolichenic fungi are a group of microfungi that resides asymptomatically within the thalli of lichens. Endolichenic fungi can be recognized as luxuriant metabolic artists that produce propitious bioactive secondary metabolites. More than any other time, there is a worldwide search for new antibiotics due to the alarming increase in microbial resistance against the currently available … Read more...

33586

Chae H.-J., Kim G.-J., Deshar B., Kim H.-J., Shin M.-J., Kwon H., Youn U.-J., Nam J.-W., Kim S.-H., Choi H. & Suh S.-S. (2021): Anticancer activity of 2-O-caffeoyl alphitolic acid extracted from the lichen, Usnea barbata 2017-KL-10, Molecules, 26(13): 3937 [12 p.]

Colorectal cancer is one of the life-threatening ailments causing high mortality and morbidity worldwide. Despite the innovation in medical genetics, the prognosis for metastatic colorectal cancer in patients remains unsatisfactory. Recently, lichens have attracted the attention of researchers in the search for targets to fight against cancer. Lichens are considered mines of thousands of metabolites. Researchers have reported that lichen-derived metabolites demonstrated biological effects, such as … Read more...

33587

An D.-F., Jiang L.-Q., Zhang K., Li G.-D., Wang X.-Y., Jiang M.-G., Lang L., Wang L.-S., Imhof J.F., Jiang C.-L. & Jiang Y. (2021): Glaciibacter favus sp. nov., isolated from a lichen sample, Archives of Microbiology, 203: 2439–2444

A novel Actinobacterium strain YIM 131861 T, was isolated from lichen collected from the South Bank Forest of the Baltic Sea, Germany. It was Gram-stain-positive, strictly aerobic, catalase positive and oxidase negative, yellow pigmented. Cells were motile with a polar fagellum, irregular rod shaped and did not display spore formation. The strain grew at 15−30 °C (optimum 25 °C), at pH 6.0−10.0 (optimum pH 7.0) and in the presence of 0−1.5% (w/v) NaCl (optimum 1%). Phylogenetic analysis … Read more...

33588

Chen X., Bai F., Huang J., Lu Y., Wu Y., Yu J. & Bai S. (2021): The organisms on rock cultural heritages: Growth and weathering, Geoheritage, 13: 56 [17 p.]

Weathering represents severe destruction to outdoor cultural rock heritages. In the process, biological weathering caused by microorganisms is known to be the key process. With abundantly available nutrients and a suitable climate, there is a higher abundance and diversity of microorganisms in moss and lichen biocrusts than on bare rock surfaces. However, few studies have been conducted on weathering in these microhabitats. In this review, we emphasize the role of microorganisms, mosses, and … Read more...

33589

Broome A., Inchboard L.L., Perks M., Clarke T.-K., Park K.J. & Thompson R. (2021): Can epiphytic lichens of remnant Atlantic oakwood trees in a planted ancient woodland site survive early stages of woodland restoration?, Annals of Forest Science, 78: 58 [21 p.]

Key message: Epiphytic lichens of remnant Atlantic oakwood trees, enclosed within a recently planted conifer matrix, show ability to survive early stages of woodland restoration (conifer removal). Context: Atlantic oakwood, ancient semi-natural woodland (ASNW), supports important epiphytic lichens. Fragmented ASNW, historically in-filled with conifers, are now being restored to reflect ASNW tree and ground flora character. Concerns exist that sudden and total removal of the conifer matrix will … Read more...

33590

Suresh A.B. & Nadumane V.K. (2021): The metabolite 5‑methyl‑1,3‑benzenediol and its derivative methyl‑2,4‑dihydroxy‑6‑methylbenzoate from the lichen Parmotrema tinctorum with potent apoptotic and anti‑angiogenesis effects, 3 Biotech, 11: 346 [22 p.]

Nature has been a rich resource of novel anticancer agents, one such source being lichens, which represent the symbiosis between algae and fungi with diverse range of secondary metabolites having therapeutic signifcance. With respect to this, the present study evaluates the in vitro apoptogenic profle of secondary metabolites from the lichen Parmotrema tinctorum towards cancer cell lines. Treatment with TLC-purifed fraction 1 from P. tinctorum resulted in signifcant reduction in the cell viabilities … Read more...

33591

Mark C.J., Painting C.J., O’Hanlon J.C. & Holwell G.I. (2021): Lichen moths do not beneft from ‘element imitation’ masquerade in the absence of a matching background, Evolutionary Ecology, 35: 401–412

Predation places signifcant selection pressures on prey species and many have evolved incredible and diverse colour patterns in response. A fascinating example of such adaptive colouration and morphology is masquerade, a camoufage strategy in which organisms resemble innocuous and inedible objects, such as leaves or twigs. Masquerading prey avoid predation by being misclassifed as irrelevant parts of the environment, rather than as food. Here we assess a putative case of masquerade in the North … Read more...

33592

Cameron R.P. (2021): GIS-based modeling to assess ecological niche differentiation in four species of sympatric lichens at risk in Nova Scotia, Canada, Bryologist, 124(3): 323–334

Species distribution models (SDMs) rely on the concept of niche theory that suggests that individual species live within definable ranges of environmental conditions. Comparisons of SDMs between species can help further the understanding of competitive exclusion and niche differentiation. SDMs were created for Erioderma pedicellatum, E. mollissimum, Pectenia plumbea and Pannaria lurida, four sympatric species that occur in Nova Scotia, Canada. Logistic regression was used to create SDMs using … Read more...