Results 61 to 70 of about 503,811 (193)

The lichen flora of the Chagos Archipelago : including a comparison with other island and coastal tropical floras [PDF]

open access: yes, 2000
The 1996 Chagos Expedition provided the first opportunity to study the archipelago’s lichen flora. Seventeen of the 55 islands were ecologically investigated, some in more detail than others, and lists and representative collections of lichens have been ...
Aptroot, André, Seaward, Mark R. D.
core  

A comparative study of lichen biochemistry and air pollution status of urban, semi urban and industrial area of Hooghly and Burdwan district, West Bengal [PDF]

open access: yesJournal of Stress Physiology & Biochemistry, 2011
Lichens are group of nonvascular plants. Lichen absorbs water and nutrient passively from their environment. Because of this lichens are particularly sensitive to environmental factors such as temperature, water availability, and air pollutants and/or by
Das K.   +4 more
doaj  

A Multifunctional and Possible Skin UV Protectant, (3R)-5-Hydroxymellein, Produced by an Endolichenic Fungus Isolated from Parmotrema austrosinense

open access: yesMolecules, 2016
Lichens are considered a great bio-resource because they produce large numbers of secondary metabolites with many biological activities; however, they have not been cultivated under artificial conditions to date.
Lu Zhao   +4 more
doaj   +1 more source

Population Genetics and Photobiont Selectivity in Antarctic Lichens [PDF]

open access: yes, 2013
This thesis examines population genetic structure and migration indices of an Antarctic endemic lichen Buellia frigida as well as algal selectivity of the lichens Buellia frigida, Umbilicaria aprina and Umbilicaria decussata in the Ross Sea Region of ...
Burgess-Jones, Tracey
core  

Effect of lichen substances complex on selected soil fungi [PDF]

open access: yes, 2022
Promotor: dr hab. inż. Paweł Czarnota, prof. UR - 306 s., aneks - 215 s.Głównym celem przeprowadzonych eksperymentów było określenie wpływu wyekstrahowanego wodą deszczową kompleksu substancji porostowych na dynamikę wzrostu mycelium trzech wybranych ...
Furmanek, Łukasz
core  

Lichen Depsides and Depsidones Reduce Symptoms of Diseases Caused by Tobacco Mosaic Virus (TMV) in Tobacco Leaves

open access: yesNatural Product Communications, 2012
Two depsides and five depsidones, isolated from lichens, were tested to determine their in vivo protective effects on tobacco leaves challenged with Tobacco Mosaic Virus (TMV).
Ingrid Ramírez   +7 more
doaj   +1 more source

Foliicolous lichens and their lichenicolous fungi collected during the Smithsonian International Cryptogamic Expedition to Guyana 1996 [PDF]

open access: yes, 1998
A total of 233 foliicolous lichen species and 18 lichenicolous fungi are reported from Guyana as a result of the Smithsonian „International Cryptogamic Expedition to Guyana“ 1996.
Lücking, Robert
core  

Anti-angiogenic and antiproliferative properties of the lichen substances (-)-usnic acid and vulpinic acid

open access: yes, 2015
WOS: 000359348000006PubMed ID: 26136299The anti-proliferative activities of the lichen substances (-)-usnic acid and vulpinic acid on the viability of HepG2 hepatocarcinoma cells, NS20Y neuroblastoma cells and HUVEC endothelial cells were studied by the ...
Koparal, Ayşe Tansu
core   +1 more source

A provisional survey of the interaction between net photosynthetic rate, respiratory rate, and thallus water content in some New Zealand cryptogams [PDF]

open access: yes, 1980
The effect of water content on photosynthetic and respiratory rates in eight lichen species and one bryophyte species were studied using an injection infrared gas analyser technique. All species snowed a strong relationship between net assimilation rate (
Green, T.G. Allan   +2 more
core  

Lichen substance concentrations in the lichen Hypogymnia physodes are correlated with heavy metal concentrations in the substratum

open access: yes, 2013
Lichen substances (i.e. lichen-specific carbon-based secondary compounds) are known to be involved in the uptake and immobilization of metal ions, though the biochemical mechanisms of this interaction are largely unexplained.
Leuschner, Christoph   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy