Microchemical Methods for the Identification of Lichens
01 Jun 2003-The Bryologist (The American Bryological and Lichenological Society)-Vol. 106, Iss: 2, pp 345-345
TL;DR: The Moss Genus Fissidens in New Zealand: An Illustrated Key is illustrated by B.J. BEEVER and N.M. Malcolm.
Abstract: J. BEEVER, B. MALCOLM AND N. MALCOLM. The Moss Genus Fissidens in New Zealand. An Illustrated Key. Te Puninga Fissidens I Aotearoa. iv 1 91 pages (soft cover, coil-bound) 1 CD (pdf format). Micro-Optics Press, Box 320, Nelson, New Zealand. 2002. [ISBN 0-9582224-6-0.] Price: NZ$60. (Price includes postage to anywhere in the world. A personal or institutional cheque in the buyer’s local currency for the equivalent amount is acceptable. Cheques should be made payable to Micro-Optics Press.)
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Field Museum of Natural History1, American Museum of Natural History2, University of California, Santa Cruz3, Complutense University of Madrid4, National Autonomous University of Mexico5, Saint Louis University6, University of Idaho7, Ramkhamhaeng University8, Charles Darwin Foundation9, Anadolu University10, Royal Botanic Garden Edinburgh11, George Mason University12, Conservation International13, Australian National University14, University of Tromsø15, University of Minnesota16, Hungarian Academy of Sciences17, National University of the Northeast18, University of Koblenz and Landau19, Landcare Research20, University of Barcelona21, University of British Columbia22, University of Graz23, University of California, Riverside24, Oregon University System25, National Scientific and Technical Research Council26, University of the South Pacific27, University of Chicago28, University of Bergen29, Academy of Sciences of the Czech Republic30, Charles University in Prague31, Mahasarakham University32, University of Illinois at Chicago33, Universidad de Oriente34, University of Salzburg35, Smithsonian Tropical Research Institute36, University of Hamburg37, University of Bradford38, University of Liège39, Goethe University Frankfurt40, University of Copenhagen41, King Mongkut's Institute of Technology Ladkrabang42, Khon Kaen University43, Swedish University of Agricultural Sciences44, Natural History Museum45, University of Oslo46, Council of Scientific and Industrial Research47, University of Wisconsin-Madison48, Museum für Naturkunde49
TL;DR: A total of 100 new species of lichenized fungi are described, representing a wide taxonomic and geographic range, and emphasizing the dire need for taxonomic expertise in lichenology.
Abstract: The number of undescribed species of lichenized fungi has been estimated at roughly 10,000. Describing and cataloging these would take the existing number of taxonomists several decades; however, the support for taxonomy is in decline worldwide. In this paper we emphasize the dire need for taxonomic expertise in lichenology. We bring together 103 colleagues from institutions worldwide to describe a total of 100 new species of lichenized fungi, representing a wide taxonomic and geographic range. The newly described species are: Acarospora flavisparsa, A. janae, Aderkomyces thailandicus, Amandinea maritima, Ampliotrema cocosense, Anomomorpha lecanorina, A. tuberculata, Aspicilia mansourii, Bacidina sorediata, Badimia multiseptata, B. vezdana, Biatora epirotica, Buellia sulphurica, Bunodophoron pinnatum, Byssoloma spinulosum, Calopadia cinereopruinosa, C. editae, Caloplaca brownlieae, C. decipioides, C. digitaurea, C. magnussoniana, C. mereschkowskiana, C. yorkensis, Calvitimela uniseptata, Chapsa microspora, C. psoromica, C. rubropulveracea, C. thallotrema, Chiodecton pustuliferum, Cladonia mongkolsukii, Clypeopyrenis porinoides, Coccocarpia delicatula, Coenogonium flammeum, Cresponea ancistrosporelloides, Crocynia microphyllina, Dictyonema hernandezii, D. hirsutum, Diorygma microsporum, D. sticticum, Echinoplaca pernambucensis, E. schizidiifera, Eremithallus marusae, Everniastrum constictovexans, Fellhanera borbonica, Fibrillithecis sprucei, Fissurina astroisidiata, F. nigrolabiata, F. subcomparimuralis, Graphis caribica, G. cerradensis, G. itatiaiensis, G. marusa, Gyalideopsis chicaque, Gyrotrema papillatum, Harpidium gavilaniae, Hypogymnia amplexa, Hypotrachyna guatemalensis, H. indica, H. lueckingii, H. paracitrella, H. paraphyscioides, H. parasinuosa, Icmadophila eucalypti, Krogia microphylla, Lecanora mugambii, L. printzenii, L. xanthoplumosella, Lecidea lygommella, Lecidella greenii, Lempholemma corticola, Lepraria sekikaica, Lobariella sipmanii, Megalospora austropacifica, M. galapagoensis, Menegazzia endocrocea, Myriotrema endoflavescens, Ocellularia albobullata, O. vizcayensis, Ochrolechia insularis, Opegrapha viridipruinosa, Pannaria phyllidiata, Parmelia asiatica, Pertusaria conspersa, Phlyctis psoromica, Placopsis imshaugii, Platismatia wheeleri, Porina huainamdungensis, Ramalina hyrcana, R. stoffersii, Relicina colombiana, Rhizocarpon diploschistidina, Sticta venosa, Sagenidiopsis isidiata, Tapellaria albomarginata, Thelotrema fijiense, Tricharia nigriuncinata, Usnea galapagona, U. pallidocarpa, Verrucaria rhizicola, and Xanthomendoza rosmarieae. In addition, three new combinations are proposed: Fibrillithecis dehiscens, Lobariella botryoides, and Lobariella pallida.
215 citations
TL;DR: There was a significant positive relationship between NO(x) and lichen abundance due to the ubiquitous distribution of pollution tolerant species, mainly associated with eutrophication.
138 citations
Cites methods from "Microchemical Methods for the Ident..."
...Thin-layer chromatography was used to identify sterile crusts and problematic lichens (Orange et al., 2001)....
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TL;DR: This study reveals that the photobiont, generally the subsidiary member of the symbiotic lichen association, could exhibit clear preferences for environmental factors that may limit the ecological niches available to lichens and lead to the existence of specific lichen guilds.
Abstract: The distribution patterns of symbiotic algae are thought to be conferred mainly by their hosts, however, they may originate in algal environmental requirements as well. In lichens, predominantly terrestrial associations of fungi with algae or cyanobacteria, the ecological preferences of photobionts have not been directly studied so far. Here, we examine the putative environmental requirements in lichenized alga Asterochloris, and search for the existence of ecological guilds in Asterochloris-associating lichens. Therefore, the presence of phylogenetic signal in several environmental traits was tested. Phylogenetic analysis based on the concatenated set of internal transcribed spacer rDNA and actin type I intron sequences from photobionts associated with lichens of the genera Lepraria and Stereocaulon (Stereocaulaceae, Ascomycota) revealed 13 moderately to well-resolved clades. Photobionts from particular algal clades were found to be associated with taxonomically different, but ecologically similar lichens. The rain and sun exposure were the most significant environmental factor, clearly distinguishing the Asterochloris lineages. The photobionts from ombrophobic and ombrophilic lichens were clustered in completely distinct clades. Moreover, two photobiont taxa were obviously differentiated based on their substrate and climatic preferences. Our study, thus reveals that the photobiont, generally the subsidiary member of the symbiotic lichen association, could exhibit clear preferences for environmental factors. These algal preferences may limit the ecological niches available to lichens and lead to the existence of specific lichen guilds.
138 citations
Cites methods from "Microchemical Methods for the Ident..."
...Lichens were identified using conventional lichenological methods; all Lepraria specimens were analysed using thin-layer chromatography on Merck silica gel 60 F254 pre-coated glass plates in solvent systems A, B and C, according to Orange et al. (2001)....
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TL;DR: Progress in genomics, mass spectrometry and other analytical technologies are continuing to illuminate the wealth of biological and chemical diversity present within the lichen holobiome, and implementation of novel biodiscovery strategies such as metagenomic screening, coupled with synthetic biology approaches to reconstitute, re-engineer and heterologously express lichen-derived biosynthetic gene clusters in a cultivable host offer a promising means for tapping into this hitherto inaccessible wealth of natural products.
Abstract: Lichens, which are defined by a core symbiosis between a mycobiont (fungal partner) and a photobiont (photoautotrophic partner), are in fact complex assemblages of microorganisms that constitute a largely untapped source of bioactive secondary metabolites. Historically, compounds isolated from lichens have predominantly been those produced by the dominant fungal partner, and these continue to be of great interest for their unique chemistry and biotechnological potential. In recent years it has become apparent that many photobionts and lichen-associated bacteria also produce a range of potentially valuable molecules. There is evidence to suggest that the unique nature of the symbiosis has played a substantial role in shaping many aspects of lichen chemistry, for example driving bacteria to produce metabolites that do not bring them direct benefit but are useful to the lichen as a whole. This is most evident in studies of cyanobacterial photobionts, which produce compounds that differ from free living cyanobacteria and are unique to symbiotic organisms. The roles that these and other lichen-derived molecules may play in communication and maintaining the symbiosis are poorly understood at present. Nonetheless, advances in genomics, mass spectrometry and other analytical technologies are continuing to illuminate the wealth of biological and chemical diversity present within the lichen holobiome. Implementation of novel biodiscovery strategies such as metagenomic screening, coupled with synthetic biology approaches to reconstitute, re-engineer and heterologously express lichen-derived biosynthetic gene clusters in a cultivable host, offer a promising means for tapping into this hitherto inaccessible wealth of natural products.
133 citations
TL;DR: This paper examines the community structure of lichen epiphytes on aspen (Populus tremula L.) in Scotland, including species across all functional groups and comprising, therefore, taxonomically difficult ‘microlichens’.
Abstract: Aim Lichen epiphytes are important for biodiversity conservation and are also widely applied as environmental indicators. However, biogeographical and ecological knowledge underpinning lichen epiphyte conservation, and the use of lichens as indicators, is based primarily on a limited range of ‘macrolichen’ species. Wider trends in epiphyte biodiversity remain largely unexplored. This paper examines the community structure of lichen epiphytes on aspen (Populus tremula L.) in Scotland, including species across all functional groups and comprising, therefore, taxonomically difficult ‘microlichens’.
Location Northern Britain (Scotland).
Methods Epiphytes were sampled from 12 sites throughout Scotland and examined at two scales: between and within aspen stands. Species were classified into contrasting functional groups and ordination by detrended correspondence analysis was used to summarize community structure.
Results Within aspen stands (between trees) epiphyte communities showed successional patterns related to tree age. These successional patterns changed predictably for stands aligned along a climatic gradient (between stands).
Main conclusions A dual climatic–successional trend in epiphyte community structure is presented. Large-scale trends in epiphyte diversity are explained as the local response of species with contrasting functional traits to climate and autogenic succession. Turnover of functional groups between stands is positively related to β-diversity, and ecological limits to the frequency of contrasting functional groups are presented. Accordingly, the study and application of lichen species with similar functional traits may inadequately represent patterns of biodiversity. This prompts criticism of the currently accepted conservation strategy, i.e. (1) an emphasis in the conservation literature on ‘macrolichen’ species with similar ecologies and (2) the application of lichen indices over climatically variable geographical areas.
119 citations
Cites methods from "Microchemical Methods for the Ident..."
...The identification of equivocal sterile crusts was confirmed using thin-layer chromatography with solvent systems A and G (Orange et al., 2001)....
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...Identification of specimens was using standard light microscopy at ·6–·40 (Meiji EMZ-TR), ·100, ·400 and under oil at ·1000 (Meiji ML-2300) and standard chemical spot tests with K, C and Pd (Orange et al., 2001)....
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...Lugol’s iodine was used to stain ascoma tissue where necessary (Orange et al., 2001)....
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