Results 21 to 30 of about 545 (181)

Biosynthetic gene cluster synteny: Orthologous polyketide synthases in Hypogymnia physodes, Hypogymnia tubulosa, and Parmelia sulcata

open access: yesMicrobiologyOpen, Volume 12, Issue 5, October 2023., 2023
The new Parmelia sulcata genome from the metagenomic sample was evaluated with Hypogymnia physodes and Hypogymnia tubulosa to identify orthologous polyketide synthase (PKS)‐related biosynthetic gene clusters (BGC). The phylogenetic tree highlights the relation of investigated sequences.
Nadim Ahmad   +6 more
wiley   +1 more source

How to build a lichen: from metabolite release to symbiotic interplay

open access: yesNew Phytologist, Volume 238, Issue 4, Page 1362-1378, May 2023., 2023
Summary Exposing their vegetative bodies to the light, lichens are outstanding amongst other fungal symbioses. Not requiring a pre‐established host, ‘lichenized fungi’ build an entirely new structure together with microbial photosynthetic partners that neither can form alone.
Gregor Pichler   +4 more
wiley   +1 more source

Two‐step isolation of the two major paraconic acids of Cetraria islandica

open access: yesJournal of Separation Science, Volume 46, Issue 6, March 2023., 2023
The lichen Cetraria islandica is traditionally used as a demulcent for the symptomatic treatment of irritations of the mouth and throat and associated dry cough, as well as for the treatment of temporary loss of appetite. In addition to depsides and depsidones, thalli contain paraconic acids, a group of secondary metabolites commonly found in lichens ...
Eduardo Villicaña González   +2 more
wiley   +1 more source

A Biosynthetic and Taxonomic Atlas of the Global Lichen Holobiont. [PDF]

open access: yesEnviron Microbiol
This analysis of 794 publicly available lichen shotgun metagenomic datasets, covering 467 unique lichen species from 34 countries, revealed that lichens are complex holobionts. They harbour a variety of fungal, algal, and bacterial players with remarkable biosynthetic capabilities.
Waterworth SC   +4 more
europepmc   +2 more sources

ASAP‐MS and DART‐MS as ancillary tools for direct analysis of the lichen metabolome

open access: yesPhytochemical Analysis, Volume 33, Issue 7, Page 1028-1035, October 2022., 2022
Abstract Introduction Lichens contain unique metabolites that most often need to be characterized from a limited amount of material. While thin layer chromatography is still the preferred analysis method for most lichenologists, liquid chromatography gives a deeper insight in the lichen metabolome, but an extractive step is needed before any analysis ...
Simon Ollivier   +6 more
wiley   +1 more source

New insights into the Van Krevelen diagram: Automated molecular formula determination from HRMS for a large chemical profiling of lichen extracts

open access: yesPhytochemical Analysis, Volume 33, Issue 7, Page 1111-1120, October 2022., 2022
Abstract Introduction In recent years, LC‐MS has become the golden standard for metabolomic studies. Indeed, LC is relatively easy to couple with the soft electrospray ionization. As a consequence, many tools have been developed for the structural annotation of tandem mass spectra.
Simon Ollivier   +6 more
wiley   +1 more source

Anti‐Inflammatory Potential of Compounds Isolated from Tunisian Lichens Species

open access: yesChemistry &Biodiversity, Volume 19, Issue 8, August 2022., 2022
Abstract The lichen's special symbiotic structure enables it to produce bioactive substances. They have historically been recognized for their aesthetic and medicinal benefits. Furthermore, in recent years, they have performed in various fields, including perfumery, dyeing, and pharmacology due to their rich secondary metabolites.
Mohamed Mendili   +6 more
wiley   +1 more source

Nuanced qualitative trait approaches reveal environmental filtering and phylogenetic constraints on lichen communities

open access: yesEcosphere, Volume 13, Issue 4, April 2022., 2022
Abstract We propose that a qualitative trait approach based on more detailed nuanced traits may reveal previously overlooked patterns, especially when combined with phylogenetic perspectives. By sampling epiphytic lichens and using a functional approach based on nuanced qualitative traits, such as a much greater resolution over photobiont identity ...
Natália M. Koch   +5 more
wiley   +1 more source

Chemical properties of key metabolites determine the global distribution of lichens

open access: yesEcology Letters, Volume 25, Issue 2, Page 416-426, February 2022., 2022
In lichen symbioses, secondary metabolites produced by the lichen fungi (mycobionts) provide UV protection on which trebouxioid green algae as the most prominent photobionts sensitively depend. These metabolites differ in their UV absorbance capability and solvability and therefore vary in their propensity of being leached from the lichen body by high ...
Andreas H. Schweiger   +6 more
wiley   +1 more source

Phytochemical Characterization and Pharmacological Properties of Lichen Extracts from Cetrarioid Clade by Multivariate Analysis and Molecular Docking

open access: yesEvidence-Based Complementary and Alternative Medicine, Volume 2022, Issue 1, 2022., 2022
Introduction. Lichens, due to the presence of own secondary metabolites such as depsidones and depsides, became a promising source of health‐promoting organisms with pharmacological activities. However, lichens and their active compounds have been much less studied.
Isabel Ureña-Vacas   +6 more
wiley   +1 more source

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