Results 31 to 40 of about 1,299 (187)

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

The extracts of Lobaria pindarensis, an edible lichen from Himalayas, suppress inflammatory response and fibrillation of amyloid β-protein in cultured microglial cells: Active depsidones, norstictic acid and stictic acid, are responsible for the functions

open access: yesJournal of Functional Foods, 2023
¨ anen is an edible and medicinal lichen found in the Himalayas that has been used as ethnomedicine for years to combat inflammation. The study aimed to evaluate the ability of L.
Mei-Xia Yang   +12 more
semanticscholar   +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

Depside and Depsidone Synthesis in Lichenized Fungi Comes into Focus through a Genome-Wide Comparison of the Olivetoric Acid and Physodic Acid Chemotypes of Pseudevernia furfuracea

open access: yesBiomolecules, 2021
Primary biosynthetic enzymes involved in the synthesis of lichen polyphenolic compounds depsides and depsidones are non-reducing polyketide synthases (NR-PKSs), and cytochrome P450s.
Garima Singh   +3 more
doaj   +1 more source

Tinctoride A, a New Hopan‐Type Triterpenoic Peracid from the Thallus of Lichen Parmotrema Tinctorum (Despr. ex Nyl.) Hale

open access: yesJournal of Chemistry, Volume 2022, Issue 1, 2022., 2022
A new hopan‐type triterpenoic peracid, tinctoride A (1), together with three known compounds, zeorin (2), 6β,22‐dihydroxyhopane (3), and ergosterol peroxide (4), was isolated from Parmotrema tinctorum (Despr. ex Nyl.) Hale. Their chemical structures were identified by extensive 1D and 2D NMR analysis and high‐resolution mass spectroscopy and compared ...
Le-Thuy-Thuy-Trang Hoang   +12 more
wiley   +1 more source

Species boundaries in the messy middle—A genome‐scale validation of species delimitation in a recently diverged lineage of coastal fog desert lichen fungi

open access: yesEcology and Evolution, Volume 11, Issue 24, Page 18615-18632, December 2021., 2021
We investigate species boundaries and the potential for micro‐endemism for a charismatic genus of lichen fungi occurring in Baja California. Genome‐scale data support high species‐level diversity, along with high levels of endemism, while highlighting the problem of delimiting species, particularly in groups with complex, recent phylogeographic ...
Jesse Jorna   +13 more
wiley   +1 more source

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