scholarly journals Water Distribution in Foliose Lichen Species: Interactions between Method of Hydration, Lichen Substances and Thallus Anatomy

2000 ◽  
Vol 86 (3) ◽  
pp. 595-601 ◽  
Author(s):  
V Souza-Egipsy
Keyword(s):  
Species Interactions ◽  
Water Distribution ◽  
Lichen Species ◽  
Lichen Substances ◽  
Thallus Anatomy ◽  
Foliose Lichen

Lecidea rubrocastanea, a new lichen species from conifer bark and wood in interior western North America (Lecanorales, lichenized ascomycetes)

2007 ◽  
Vol 39 (4) ◽  
pp. 339-347 ◽  
Author(s):  
Toby SPRIBILLE ◽  
Christian PRINTZEN
Keyword(s):  
British Columbia ◽  
North America ◽  
Morphological Traits ◽  
Washington State ◽  
Lichen Species ◽  
Western North America ◽  
Lichenized Ascomycetes ◽  
Lichen Substances ◽  
Thin Walled

Abstract:Lecidea rubrocastanea T. Sprib. & Printzen is described as new from conifer bark and wood in montane valleys of inland British Columbia, Idaho, Montana, Oregon and Washington State. It is characterized by its combination of a crustose olivaceous thallus lacking secondary lichen substances, small, dark burgundy-red or maroon apothecia, dark-capped paraphyses, Lecidella-type ascus, small, thin-walled ascospores, and bacilliform conidia. The generic affinities of the species based on analysis of ITS DNA are unclear, but it has numerous morphological traits in common with Japewia.

scholarly journals Lichens growth on Sun Temple of Konark in Odisha, India- A curse or blessing

2017 ◽  
Vol 2 (02) ◽  
Author(s):  
Sandeep Kumar Nayak ◽  
Prashant Kumar Behera ◽  
Rajesh Bajpai ◽  
Dalip Kumar Upreti ◽  
Kunja Bihari Satapathy
Keyword(s):  
Secondary Metabolites ◽  
Lichen Species ◽  
Present Observation ◽  
Crustose Lichen ◽  
Almost All ◽  
The Temple ◽  
Foliose Lichen ◽  
Lichen Growth

The present observation on the famous Sun Temple of Konark, Odisha for Lichen growth revealed that a more than 500 different spots were found on main temple, small sculptures erected within the temple premises and boundary walls. A total of 15 species belonging 14 genera and 11 families were found growing on the sites surveyed. Ten lichen species tightly adhere to the substrate forming crust (crustose lichen) and producing secondary metabolites were dominated on almost all the sites while only four leafy (foliose lichen) species and one squamulose species were recorded.

scholarly journals Lichens growth on Sun Temple of Konark in Odisha, India- A curse or blessing

2017 ◽  
Vol 2 (02) ◽  
Author(s):  
Sandeep Kumar Nayak ◽  
Prashant Kumar Behera ◽  
Rajesh Bajpai ◽  
Dalip Kumar Upreti ◽  
Kunja Bihari Satapathy
Keyword(s):  
Secondary Metabolites ◽  
Lichen Species ◽  
Present Observation ◽  
Crustose Lichen ◽  
Almost All ◽  
The Temple ◽  
Foliose Lichen ◽  
Lichen Growth

The present observation on the famous Sun Temple of Konark, Odisha for Lichen growth revealed that a more than 500 different spots were found on main temple, small sculptures erected within the temple premises and boundary walls. A total of 15 species belonging 14 genera and 11 families were found growing on the sites surveyed. Ten lichen species tightly adhere to the substrate forming crust (crustose lichen) and producing secondary metabolites were dominated on almost all the sites while only four leafy (foliose lichen) species and one quamulose species were recorded.

scholarly journals Biodeterioration Patterns and Their Interpretation for Potential Applications to Stone Conservation: A Hypothesis from Allelopathic Inhibitory Effects of Lichens on the Caestia Pyramid (Rome)

2020 ◽  
Vol 12 (3) ◽  
pp. 1132 ◽  
Author(s):  
Giulia Caneva ◽  
Maria Rosaria Fidanza ◽  
Chiara Tonon ◽  
Sergio Enrico Favero-Longo
Keyword(s):  
Biochemical Properties ◽  
Lichen Species ◽  
Archaeological Sites ◽  
Inhibitory Effects ◽  
Stone Conservation ◽  
Lichen Substances ◽  
Potential Applications ◽  
The Rich ◽  
Source Of Information

The colonisation of stone by different organisms often leaves biodeterioration patterns (BPs) on the surfaces even if their presence is no longer detectable. Peculiar weathering patterns on monuments and rocks, such as pitting phenomena, were recognised as a source of information on past colonisers and environmental conditions. The evident inhibition areas for new bio-patinas observed on the marble blocks of the Caestia Pyramid in Rome, recognisable as tracks of previous colonisations, seem a source for developing new natural products suitable for restoration activities. To hypothesise past occurring communities and species, which gave rise to such BPs, we carried out both in situ observations and analyses of the rich historical available iconography (mainly photographs). Moreover, we analysed literature on the lichen species colonising carbonate stones used in Roman sites. Considering morphology, biochemical properties and historical data on 90 lichen species already reported in Latium archaeological sites, we suppose lichen species belonging to the genus Circinaria (Aspicilia s.l.) to be the main aetiological agent of such peculiar BPs. These results seem relevant to highlight the long-lasting allelopathic properties of some lichen substances potentially applicable as a natural product to control colonisation, improving the environmental and economical sustainability of stone restoration.

scholarly journals Nephroma orvoi (Nephromatoideae, Peltigeraceae) – a new lichen species for Russia

Turczaninowia ◽  
2021 ◽  
Vol 24 (4) ◽  
pp. 54-57
Author(s):  
Gennady P. Urbanavichus ◽  
Irina N. Urbanavichene
Keyword(s):  
British Columbia ◽  
Nature Reserve ◽  
Lichen Species ◽  
Lower Side ◽  
Rock Outcrops ◽  
Open Habitat ◽  
Murmansk Region ◽  
Lichen Substances ◽  
Region Description

The lichen species Nephroma orvoi is reported as new to Russia from two localities in Murmansk Region. Description and colour illustrations of the material studied are provided. The species was previously known from Norway, Sweden, Finland, Switzerland, Canada (Alberta and British Columbia), USA (Washington), and Greenland. In Russia, it grows on rock outcrops in open habitat along the shore of a Paz River (Pasvik Nature Reserve) and in the bed of a small unnamed stream (neighborhood of Fedorova Tundra Mt.). The specimens were identified by the morphology (mostly laminal, brown, corticate soredia; faveolate, wrinkle-ridged lobes; lower side with short pseudotomentum in middle and inner part) and the identification was confirmed by lichen substances (a series of specific triterpenoids).

VI. Chemical investigations of the lidien species Alectoria nigricans (ACH.) Nyl. and Parmelia alpicola Th. Fr.

1967 ◽  
Vol 22 (7) ◽  
pp. 777-783 ◽  
Author(s):  
Yngve Johannes Solberg
Keyword(s):  
Fatty Acid ◽  
Chromatographic Separation ◽  
Lichen Species ◽  
Main Compound ◽  
Special Regard ◽  
Lichen Substances ◽  
Paper Chromatographic Separation

Parmelia alpicola Th. Fr. and Alectoria nigricans (Ach.) Nyl. have been chemically investigated with special regard to their content of lichen substances. Both the species have been found to contain Alectorialic acid as the main compound and probably Thamnolic acid in trace amounts. In addition to these two acids, mannitol and a tetrahydroxy fatty acid have been isolated from Parmelia alpicola. Further-more three unidentified substances have been detected in the same lichen species by paper chromatographic separation.Alectorialic acid was identified as a depside aldehyde and most likely as a mixed orcinol and β-orcinol derivate. The depside was hydrolysed and the aldehyde-component was found to be Atranol.

Eutrophication threatens the biochemical diversity in lichens

2011 ◽  
Vol 43 (2) ◽  
pp. 147-154 ◽  
Author(s):  
Markus HAUCK
Keyword(s):  
Single Species ◽  
Lichen Species ◽  
Chemical Diversity ◽  
Data Sets ◽  
High Nitrogen ◽  
Secondary Chemistry ◽  
Nitrogen Levels ◽  
Lichen Symbiosis ◽  
Lichen Substances ◽  
Secondary Substances

AbstractLichens respond sensitively to ambient nitrogen levels. Global change, which includes the increase of nitrogen-polluted environments, causes the decline of species sensitive to eutrophication, whereas some species tolerant of high nitrogen levels increase. Lichens produce hundreds of carbon-based secondary substances (so-called lichen substances), most of which are unique to the lichen symbiosis. In the present paper, correlative patterns between the eutrophication tolerance of lichen species and their secondary chemistry are analyzed using two data sets, one classifying the eutrophication tolerance of more than 500 Central European lichen species, and another of epiphytic lichens from more than 1200 plots from the Netherlands. Analyses show that, in general, the diversity of lichen secondary metabolites decreases along with increasing tolerance to eutrophication. Most notable is the reduced diversity of depsides and depsidones, the two largest groups of lichen substances, but dibenzofurans and fatty acids are also generally found in lichens sensitive to eutrophication. Conversely, anthraquinones and pulvinic acids are found most frequently in lichens from nitrogen-rich environments that can result from eutrophication. A family-wide analysis of the datasets indicates that loss of chemical diversity is not due to a single species-rich lichen family, but a characteristic of many lichen families.

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