Results 41 to 50 of about 1,788 (181)

Mitodepressive and clastogenic effects of aqueous extracts of the lichens Myelochroa lindmanii and Canoparmelia texana (Lecanorales, Parmeliaceae) on meristematic cells in plant bioassays

open access: yesGenetics and Molecular Biology, 2008
The cytotoxicity effect of aqueous extracts of the lichens species Myelochroa lindmanii and Canoparmelia texana (Lecanorales, Parmeliaceae) were evaluated using meristematic cells of lettuce (Lactuca sativa) and maize (Zea mays).
José Marcello Salabert de Campos   +3 more
doaj   +1 more source

Distinct Microbial Communities in Adjacent Rock and Soil Substrates on a High Arctic Polar Desert

open access: yesFrontiers in Microbiology, 2021
Understanding microbial niche variability in polar regions can provide insights into the adaptive diversification of microbial lineages in extreme environments. Compositions of microbial communities in Arctic soils are well documented but a comprehensive
Yong-Hoe Choe   +2 more
doaj   +1 more source

Die Gattung Aspicilia, ihre Ableitungen nebst Bemerkungen tiber cryptolecanorine Ascocarporganisation bei anderen Genera der Lecanorales (Ascomycetes lichenisati). [PDF]

open access: yes, 1991
Innerhalb der Gattung Aspicilia coll. werden einige Evolutionslinien aufgezeigt und taxonomische wie nomenklatorische Konsequenzen für gewtihnlich als Sphaerothallia Nees bezeichnete Arten werden diskutiert.
Hafellner, Josef
core   +4 more sources

Can Parietin Transfer Energy Radiatively to Photosynthetic Pigments? [PDF]

open access: yes, 2018
The main role of lichen anthraquinones is in protection against biotic and abiotic stresses, such as UV radiation. These compounds are frequently deposited as crystals outside the fungal hyphae and most of them emit visible fluorescence when excited by ...
0000-0001-6498-975X   +6 more
core   +3 more sources

Using phylogenetic and coalescent methods to understand the species diversity in the Cladia aggregata complex (Ascomycota, Lecanorales). [PDF]

open access: yesPLoS ONE, 2012
The Cladia aggregata complex is one of the phenotypically most variable groups in lichenized fungi, making species determination difficult and resulting in different classifications accepting between one to eight species.
Sittiporn Parnmen   +5 more
doaj   +1 more source

Phylogenetic placement of Lepraria cryptovouauxii sp. nov. (Lecanorales, Lecanoromycetes, Ascomycota) with notes on other Lepraria species from South America [PDF]

open access: yesMycoKeys, 2019
Lepraria cryptovouauxii is described as a new semicryptic species similar to L. vouauxii, from which it differs geographically (South America) and phylogenetically; both species differ in nucleotide position characters in nucITS barcoding marker ...
Beata Guzow-Krzemińska   +5 more
doaj   +3 more sources

A preliminary phylogeographic study of Flavopunctelia and Punctelia inferred from rDNA ITS-sequences [PDF]

open access: yes, 2005
A preliminary phylogeny of the genera Flavopunctelia and Punctelia is presented. Genus and species delimitations have been investigated using ITS rDNA-sequencing of populations from different continents.
Adler, Monica Teresa   +5 more
core  

El género Heterodermia (Lecanorales - Physciaceae) en el centro norte de Argentina [PDF]

open access: yesActa Botanica Brasilica, 2012
Como parte de un trabajo taxonómico que tiene por objetivo revisar las especies foliosas de Physciaceae que crecen en el centro y norte de Argentina se describió la morfología, anatomía y química de especímenes de Heterodermia coleccionados recientemente en estas regiones. Se citan por primera vez para Argentina Heterodermia japonica y H.
Rodriguez, Juan Manuel   +2 more
openaire   +4 more sources

Deciphering the biosynthetic pathways of lichen acids

open access: yesNew Phytologist, EarlyView.
Summary Depsides and depsidones are polyketide‐derived lichen acids widely distributed in lichen thalli, yet the biosynthetic gene clusters (BGCs) responsible for their production remain poorly understood. To address this gap, we investigated the diversity and evolutionary relationships of polyketide BGCs in lichens.
Wonyong Kim   +11 more
wiley   +1 more source

Coalescent-based species delimitation approach uncovers high cryptic diversity in the cosmopolitan lichen-forming fungal genus Protoparmelia (Lecanorales, Ascomycota). [PDF]

open access: yesPLoS ONE, 2015
Species recognition in lichen-forming fungi has been a challenge because of unsettled species concepts, few taxonomically relevant traits, and limitations of traditionally used morphological and chemical characters for identifying closely related species.
Garima Singh   +11 more
doaj   +1 more source

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