Katalog - Lichenological literature

613

Grube M. & Kroken S. (2000): Molecular approaches and the concept of species and species complexes in lichenized fungi, Mycological Research, 104(11): 1284-1294

The concept of species and species complexes of lichenized fungi is reviewed in the light of recent molecular approaches. Species concepts based on chemistry, morphology, reproductive mode, photobiont choice and habitat preference provide working hypotheses from which the delimitation of species or relationships within species complexes can be tested with molecular data. In studies in which a single locus such as ITS is used, a phylogenetic species concept can be applied only when the sequence data … Read more...

612

Grube M., Baloch E. & Arup U. (2004): A phylogenetic study of the Lecanora rupicola group (Lecanoraceae, Ascomycota), Mycol. Res., 108(5): 506–514

A molecular phylogeny of the Lecanora rupicola group is presented, based on ITS sequence analyses. The study includes saxicolous and corticolous members of the Lecanora rupicola group as well as other Lecanora species with pruinose apothecia. A phylogenetic hypothesis for species in Lecanora s. lat. and various other genera in Lecanoraceae, based on an alignment-free distance estimation technique, shows that the Lecanora rupicola group forms a monophyletic clade within Lecanoraceae. Affinities to … Read more...

611

Gargas A., DePriest P., Grube M. & Tehler A. (1995): Multiple origins of lichen symbioses in fungi suggested by SSU rDNA phylogeny, Science, 268: 1492-1495

Phylogenetic hypotheses provide a context for examining the evolution of heterotrophic lifestyles. The lichen lifestyle, which is the symbiotic association of fungi with algae, is found in various representatives of Dicaryomycotina, both Ascomycetes and Basidio- mycetes. A highly resolved parsimony analysis of small subunit ribosomal DNA (SSU rDNA) sequences suggests at least five independent origins of the lichen habit in disparate groups of Ascomycetes and Basidiomycetes. Because lichen associations … Read more...

610

Ekman S. & Tønsberg T. (2002): Most species of Lepraria and Leproloma form a monophyletic group closely related to Stereocaulon, Mycol. Res., 106 (11): 1262–1276

The phylogenetic position of members of the entirely asexually reproducing lichen-forming genera Lepraria and Leproloma was investigated using sequence data from the ITS1-5.8S-ITS2 and small subunit (SSU) nuclear ribosomal DNA. Phylogenetic reconstructions were carried out using a likelihood-based Bayesian Markov chain Monte Carlo (MCMC) tree sampling technique and the unweighted least squares optimality criterion, the latter based on maximum likelihood distances obtained via an alignment-free distance … Read more...

609

Ekman S. & Jørgensen P.M. (2002): Towards a molecular phylogeny for the lichen family Pannariaceae (Lecanorales, Ascomycota), Can. J. Bot., 80(6): 625-634

The phylogeny of the family Pannariaceae (Lecanorales, lichenized Ascomycota) was investigated using ITS1–5.8S–ITS2 nuclear ribosomal DNA sequences representing 21 species. Phylogenetic estimations were performed using parsimony and a Bayesian Markov chain Monte Carlo (MCMC) tree sampling procedure. Several phylogenetic null hypotheses were tested, also using MCMC. The results indicate that Pannariaceae, as currently treated, is polyphyletic and that Degelia sect. Amphiloma, Fuscopannaria … Read more...

608

Diederich P. et al. (2006): Contribution to the knowledge of lichens in northern France, Bull. Soc. Nat. luxemb., 106: 53-62

607

Crespo A., Blanco O. & Hawksworth D.L. (2001): The potential of mitochondrial DNA for establishing phylogeny and stabilising generic concepts in the parmelioid lichens, Taxon, 50: 807-819

A satisfactory resolution of the current instability of generic concepts in the parmelioid lichens, and particularly Parmelia s.l., has not so far emerged from molecular studies. The rDNA ITS sequence has proven too variable and the rDNA SSU too conserved to provide satisfactory discrimination around the family and generic levels in Parmeliaceae s .l. Studies of 31 new sequences of species belonging to 30 genera in the family (including the type species of 21) are reported here. These demonstrate … Read more...

606

Anonymus (2001): Cladonia norvegica Tønsberg & Holien (Cladoniaceae, Lecanorales, Ascomycota), Norwegian Fungus of the month, 2 p

605

Hachtel M. & Weddeling K. (1998): Vegetation und Mikroklima auf Arkose-Blockhalden im Warchetal (Hohe Ardennen/Belgien), Diplomarbeit, Univ. Bonn, 169 p

604

Bhattacharya D., Friedl T. & Helms G. (2002): Vertical evolution and intragenetic spread of lichen-fungal group I introns, J. Mol. Evol., 55: 74-84