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Lichens (1):
Recent article
Lichens
Abstract
We also propose an extension of the existing algorithm for the generation of probabilistic fractals, in order to obtain color fractal images. Then we show the results of our experiments and conclude this paper....
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PMID: 20643608
PDF is available here.
PDF is available here.
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Abstract
We report studies of the potential antioxidant and prooxidant activity of usnic acid extracted from Xanthoparmelia farinosa (Vainio) using a human lymphocyte cell line (Jurkat-cells) under UV-B-irradiation. Cell survival and cell metabolism were determined using different conditions such as usnic ac...
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PMID: 20656501
PDF is available here.
PDF is available here.
Abstract
We have tested the ODT by studying lichens instead of plants as photosynthetically active organisms. Prior to acetone rinsing, we found five times higher concentration of meta-scrobiculin in the reproductive parts (soralia) of Lobaria scrobiculata compared to somatic parts of this foliose epiphytic...
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PMID: 21058569
PDF is available here.
PDF is available here.
Journal of Antibiotics (63)9 2010
Abstract
A new 1,1-dichlorocyclopropane-containing angucycline, JBIR-88 (1), and a new butenolide, JBIR-89 (2), respectively, were isolated from the fermentation broths of two lichen-derived actinomycetes identified as a new species of Streptomyces (strains RI104-LiC106 and RI104-LiB101) using phylogenetic m...
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PMID: 20664606
PDF is available here.
PDF is available here.
Theory in Biosciences (129)2-3 2010
Abstract
When new entities are formed by the integration of individual organisms, these new entities possess characteristics which go beyond the sum of the individual properties of each element of the association, resulting in the development of new attributes and capacities as an integrated whole. In this p...
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PMID: 20549382
PDF is available here.
PDF is available here.
Abstract
Analyses of lead concentration and isotopic composition of recent and archived samples of the lace lichen (Ramalina menziesii) chronicle more than a century of atmospheric lead contamination in central California. The contamination extends back to our oldest sample from 1892, when lead levels in lic...
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PMID: 20527766
PDF is available here.
PDF is available here.
Pharmaceutical Biology (48)7 2010
Abstract
Cladonia clathrata Ahti & L. Xavier-Filho (Cladoniaceae) is a lichen; several Cladonia species extracts have been used for various remedies in folk medicine. In order to evaluate the actions of this lichen, studies were performed on antinociceptive, anti-inflammatory, and antioxidant activities. The...
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PMID: 20645771
PDF is available here.
PDF is available here.
Abstract
We estimated life span and assessed environmental factors influencing changes in vitality, fertility, abundance, and distribution of the epiphytic lichen species Lobaria pulmonaria on two spatial scales, individual trees and forest patches, over a period of approximately 10 years in 66 old-growth fo...
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PMID: 20715632
PDF is available here.
PDF is available here.
Abstract
These results suggest that topographic barriers influence the atmospheric transport and deposition of PAHs in high-elevation ecosystems and that PAH sources to these national park ecosystems range from local point sources to diffuse regional and global sources....
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PMID: 20465303
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
|
PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
|
PMID: 20067490
PDF is available here.
PDF is available here.
Conservation Biology (24)3 2010
Abstract
We used predictions from empirical landscape studies to set quantitative conservation criteria and targets in a multispecies and multiscale conservation planning effort. We used regression analyses to compare species richness and occurrence of five red-listed lichens on 50 ancient oaks (Quercus robu...
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PMID: 20067490
PDF is available here.
PDF is available here.
Abstract
We did not find close relationship between heavy metal content (in localities as well as lichen thalli) and photobiont diversity. Presence of multiple algal genotypes in single lichen thallus has been confirmed.
Copyright 2009 Elsevier Inc. All rights reserved....
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PMID: 20031214
PDF is available here.
PDF is available here.
Abstract
We estimated a screening efficiency due to cortical atranorin crystals at 61, 38, and 40% of blue, green and red light, respectively, whereas parietin screened 81, 27 and 1% of these wavelength ranges. Removal of atranorin caused similar levels of increased photoinhibition for P. aipolia in blue, gr...
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PMID: 20135325
PDF is available here.
PDF is available here.
Abstract
We found a relatively strong inhibition effect of usnic acid on the growth of alga Scenedesmus, accompanied by an increase of cell size, an alteration of assimilation pigment composition, followed by strong degradation of chlorophyll a, a decrease of chlorophyll a fluorescence, and an increase of re...
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PMID: 20306219
PDF is available here.
PDF is available here.
Biotechnology Letters (32)4 2010
Abstract
I collagen is the major structural protein in dermis and its presence is used to monitor skin cell proliferation and aging. Recently, novel usimine compounds have been found in the Antarctic lichen Ramalina terebrata. In the present study, usimine-C induced cell proliferation of human dermal fibrobl...
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PMID: 20035371
PDF is available here.
PDF is available here.
Abstract
We presume that, in any region on Mars where liquid water might be available, even for short periods of time, a eukaryotic symbiotic organism would have the ability to survive, at least over weeks, and to temporarily photosynthesize....
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PMID: 20402583
PDF is available here.
PDF is available here.
Abstract
We didn't reveal the isotope specificity of any one species as it was not possible to establish a correlation between values of delta 13C and a particular species....
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PMID: 20297687
PDF is available here.
PDF is available here.
Abstract
Microbiological analysis has been made of 120 samples from biotopes of the western coast of the Antarctic peninsula (Rasmussen cope, Tuxen cope, Waugh mountain), Argentine archipelago islands (Galindez, Skua, Corner, Barchans, Irizar, Uruguay, Cluls, Three Little Pigs, King-George), as well as neigh...
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PMID: 20455435
PDF is available here.
PDF is available here.
Abstract
We characterized the emissions at the exhaust of a Common Rail (CR) diesel engine, representative of light-duty class, equipped with a catalyzed diesel particulate filter (CDPF) in controlled environment. The downstream exhausts were directly analyzed (for PM, CO, CO2, 02, HCs, NOx) by infrared and...
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PMID: 21174966
PDF is available here.
PDF is available here.
Abstract
Lichens are symbiotic organisms of fungi and algae or cyanobacteria. Lichen-forming fungi synthesize a great variety of secondary metabolites, many of which are unique. Developments in analytical techniques and experimental methods have resulted in the identification of about 1050 lichen substances...
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PMID: 20469633
PDF is available here.
PDF is available here.
Abstract
From the cultures of spore-derived mycobionts of the lichen Lecanora leprosa a novel naphtho[1,8-cd]pyran-3-one derivative, lecanopyrone, was isolated. Its structure was determined by spectroscopic methods. The assembly pattern of acetate units in its biosynthesis was verified using...
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PMID: 21319703
PDF is available here.
PDF is available here.
Abstract
Family Collemataceae (Peltigerales, Ascomycota) includes species of cyanolichens with foliose to fruticose or crustose thalli, with simple or septate ascospores. The current classification divides this family into two groups on the basis of ascospore types. The objective of this study was to evaluat...
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PMID: 20361496
PDF is available here.
PDF is available here.
Abstract
We conducted a phylogenetic study of Catapyrenium and Placidiopsis as currently delimited to evaluate the monophyly of each genus and infer infrageneric relationships. An initial family level phylogenetic analysis based on the nuLSU locus and implementing a backbone constraint tree (with both weight...
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PMID: 20361497
PDF is available here.
PDF is available here.
Abstract
Species delimitation in lichen-forming fungi has been based largely on morphological differences of fungal structures and the lichen thallus with an assumption that morphology reflects hereditary changes. One of the distinguishing features between Cladonia pyxidata and C. pocillum (Cladoniaceae, Asc...
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PMID: 20524586
PDF is available here.
PDF is available here.
Journal of Environmental Biology (31)1-2 2010
Abstract
Sorensen similarity indices of lichen species in Serif Yuksal forest ranged between 0.29 and 0.84. A linear relation was found between species number sum of two lichen populations and their similarity indices. The linear equation is Y = 0.0076x + 0.1467 and the R2 of the equation is 0.2476 which is...
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PMID: 20648825
PDF is available here.
PDF is available here.
Abstract
We present data of a case study of dietary strategies and fallback foods in snub-nosed monkeys (Rhinopithecus bieti) in the Samage Forest, Northwest Yunnan, PRC. The snub-nosed monkeys adjusted intake of plant food items corresponding with changes in the phenology of deciduous trees in the forest an...
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PMID: 19890849
PDF is available here.
PDF is available here.
Natural Product Research (23)10 2009
Abstract
A detailed chemical and spectroscopic investigation of the terrestrial lichen Candelaria concolor has yielded several lichenic metabolites belonging to the pulvinic acid series, as well as several depside derivatives including pulvinic dilactone (1), vulpinic acid (4) and calycin...
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PMID: 19521906
PDF is available here.
PDF is available here.
Abstract
We analyze samples, by a polyphasic approach, from three lichen species (Cladonia arbuscula, Lecanora polytropa and Umbilicaria cylindrica) from alpine environments. Our results indicate that bacteria can form highly structured, biofilm-like assemblages on fungal surfaces and reach considerable abun...
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PMID: 19554038
PDF is available here.
PDF is available here.
Abstract
We show that atmospheric Hg accumulated in lichens is characterized by NMF with negative delta199Hg and delta201Hg values (-0.3 to -1 per thousand), making the atmosphere and the aquatic environment complementary reservoirs regarding photoreduction and NMF of Hg isotopes. Because few other reactions...
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PMID: 19731659
PDF is available here.
PDF is available here.
Abstract
We know little about the mechanisms and feedbacks that control this process in natural ecosystems. We here examine BNF in four taxonomically and ecologically different groups over the course of forest ecosystem development. At nine sites along the Franz Josef soil chronosequence (South Westland, New...
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PMID: 19739381
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
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PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
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PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
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PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
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PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
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PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
|
PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
|
PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
|
PMID: 19289158
PDF is available here.
PDF is available here.
Fitoterapia (80)5 2009
Abstract
A traditional preparation of Parmotrema saccatilobum (Taylor) Hale (Family: Parmeliaceae) is being considered for inclusion into the PNG national drug formulary by the Ministry of Health Taskforce on Traditional Medicines. The lichen preparation is traditionally used in the Milne Bay...
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PMID: 19289158
PDF is available here.
PDF is available here.
Abstract
Lobaric acid (1) has been isolated from lichen, Stereocaulon sasakii together with a new benzofuran, sakisacaulon A (2). Lobaric acid (1) inhibited the polymerization of tubulin. Structure-activity relationship of lobaric acid and its derivatives on inhibitory activity of tubulin pol...
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PMID: 19481447
PDF is available here.
PDF is available here.
Abstract
The Azores archipelago (nine islands) stretches across a sizable longitude span and sits directly on the pathway of long-range transport for airborne species over the North Atlantic Ocean. These airborne species include dusts from Africa's Sahara and Sahel and non-natural contaminants from the Unite...
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PMID: 19418815
PDF is available here.
PDF is available here.
Abstract
Samples of soil, plants, and lichens were analysed for heavy metal content (Cd, Cr, Cu, Ni, Pb, and Zn) in relation to different distances from the tunnel ventilation systems in order to evaluate the environmental pollution caused by car exhausts pollution from the Tauerntunnel and the Katschbergtun...
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PMID: 18415694
PDF is available here.
PDF is available here.
Journal of Hazardous Materials (162)2-3 2009
Abstract
We show that a 25% lichen cover modifies physical and chemical properties of asbestos-cement sheets containing chrysotile and crocidolite fibres. By innovatively coupling pull up tests and image analysis of linear structures, we show that fibre loss is significantly lower ( approximately 30%) where...
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PMID: 18692312
PDF is available here.
PDF is available here.
Plant Biology (11)2 2009
Abstract
Arctic and alpine terricolous lichens are adapted to harsh environments and are tolerant to extremely low temperatures when metabolically inactive. However, there are reports indicating that freezing can be lethal to metabolically active lichens. With a projected warmer and more unstable climate, wi...
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PMID: 19228329
PDF is available here.
PDF is available here.
Abstract
In order to evaluate environmental factors limiting distribution of species, diversity of epiphytic lichens was studied in 34 sites along an altitudinal gradient from 1300 to 1900 m on north-facing and south-facing slopes of Elmali Cedar Research Forest (Antalya province, Turkey) regarding the dispe...
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PMID: 20121019
PDF is available here.
PDF is available here.
Abstract
We report the presence of group I introns at these positions within the chloroplast-encoded large subunit ribosomal RNA gene of several lichen-forming green algae belonging to the Trebouxia genus. In contrast to the introns inserted at position 2449, all introns inserted at positions 1917, 1931, and...
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PMID: 19440984
PDF is available here.
PDF is available here.
Marine Biotechnology (11)1 2009
Abstract
Our results may also provide some leads in the development of new immunomodulating drugs....
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PMID: 18612687
PDF is available here.
PDF is available here.
Abstract
Introduced reindeer, Rangifer tarandus, overexploited lichen-rich plant communities on St. Matthew Island in the Bering Sea. A die-off of the reindeer followed, exacerbated by extreme weather in 1964, resulting in extirpation of the reindeer. A similar pattern of removal of lichens as major componen...
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PMID: 19260341
PDF is available here.
PDF is available here.
Abstract
We found, however, that the tripartite cyanobacterial lichen Lobaria pulmonaria doubled in annual biomass growth after a single 20-minute immersion in a phosphorus solution (K2HPO4), as compared to controls receiving no supplemental phosphorus. This stimulation of cyanolichens by phosphorus has dire...
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PMID: 19323240
PDF is available here.
PDF is available here.
Microbial Ecology (57)2 2009
Abstract
We did not know if they are a normal part of the vegetation cover or just a phenomenon that occasionally occurs here and there. In order to investigate diversity, distribution patterns, and the driving factors of both, we followed a random sampling system of observatories along a transect, stretchin...
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PMID: 18850242
PDF is available here.
PDF is available here.