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Martin Grube - One of the best experts on this subject based on the ideXlab platform.

  • the new species Lecanora bicinctoidea its position and considerations about phenotypic evolution in the Lecanora rupicola group
    Mycologia, 2007
    Co-Authors: Juliane Blaha, Martin Grube
    Abstract:

    A phylogenetic analysis of the Lecanora rupicola group based on combined nITS rDNA and b- tubulin sequences and a combined dataset of ITS, b- tubulin and partial sequences of polyketide synthase genes reveals a previously unrecognized species, which here is introduced under the name Lecanora bicinctoidea. The new species is a sister group of the L. swartzii complex (including L. swartzii and L. lojkaeana), which is characterized by eucorticate ascomata, and a morphological diversity that includes also a dwarf-fruticose lineage. The preferential occurrence on vertical to overhanging siliceous rocks corresponds more closely to L. swartzii. A detailed investigation of phenotypic characters reveals that the new species differs from the superficially similar morphospecies L. bicincta in several ways, such as a thallus of comparatively small areoles and broadly sessile ascomata and the development of an am- phithecial cortex devoid of algal remnants (i.e. an eucortex). L. bicinctoidea contains methyl 3a-hydroxy- 4-O-demethylbarbatate, a chemical compound not known from other members of the L. rupicola group. We also discuss the importance of eucortex formation as one of several factors that are involved in the evolution of substrate-detached thallus structures.

  • high photobiont diversity associated with the euryoecious lichen forming ascomycete Lecanora rupicola Lecanoraceae ascomycota
    Biological Journal of The Linnean Society, 2006
    Co-Authors: Juliane Blaha, Elisabeth Baloch, Martin Grube
    Abstract:

    The diversity and phylogenetic position of photobionts in the widespread saxicolous, crustose lichen-forming asco- mycete Lecanora rupicola s.l. is presented. The algal partners of this lichen species complex belong to diverse and unrelated lineages in the genus Trebouxia . Specimens were sampled from different habitats and geographical ori- gins. Either whole thallus DNA extractions or minute fragments of the algal layer of the lichen thallus were sub- jected to polymerase chain reaction, using primers that specifically amplify internal transcribed spacer rDNA of the photobionts. No correlations between different chemical races of L. rupicola with particular lineages of Trebouxia spp. were found. Irrespective of the different algal partners, all lichen thalli abundantly developed ascomata. L. rupicola apparently maintains full fecundity with a low degree of selectivity for photobionts, which promotes the occurrence of this lichen-forming species in ample ecological situations. © 2006 The Linnean Society of London, Bio- logical Journal of the Linnean Society , 2006, 88 , 283-293. ADDITIONAL KEYWORDS: Lecanora rupicola - lichens - phylogeny - selectivity - symbiosis - Trebouxio- phyceae - Trebouxia .

  • a phylogenetic study of the Lecanora rupicola group Lecanoraceae ascomycota
    Fungal Biology, 2004
    Co-Authors: Martin Grube, Elisabeth Baloch, Ulf Arup
    Abstract:

    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 the core group of Lecanora are not well supported, likewise the monophyly of Lecanora s. str. with other species groups in Lecanora, such as the lobate taxa (and Rhizoplaca) is not supported. A more detailed analysis involving Lecanora species with pruinose apothecial discs was carried out with model-based Bayesian Markov chain Monte Carlo (B/MCMC) tree sampling. The results suggest the monophyly of the Lecanora species that are characterized by the presence of chromones. Corticolous as well as saxicolous species are included. Lepraria flavescens is closely related to the Lecanora swartzii subgroup, and the new name Lecanora rouxii nom. nov. is introduced for that species. Other Lecanora species with pruinose discs are not closely related to the Lecanora rupicola group.

  • on the phylogeny of some polyketide synthase genes in the lichenized genus Lecanora
    Fungal Biology, 2003
    Co-Authors: Martin Grube, Juliane Blaha
    Abstract:

    The ketosynthase domains of putative polyketide synthase (PKS) genes from 15 species in the lichenized genus Lecanora as well as three representatives of other genera were amplified and sequenced using conserved primers. A phylogenetic analysis was carried out with the corresponding amino acid sequences, including those of non-lichenized fungi. The phylogenetic hypothesis places all PKS sequences from Lecanora and the other genera in a clade of PKSs that produce complex aromatic compounds. The PKSs from Lecanora are found in two distinct clades. One of these forms a monophyletic group with PKSs producing precursors of dihydroxy naphthalenes from non-lichenized species. This includes PKSs from the L. rupicola group and several other species which are not closely related. The other clade represents at least one functionally different protein and has no close relationships with known PKSs from other fungi. A comparison between an ITS phylogeny of the species with their DNA sequences of ketosynthase domains reveals similar PKS genes in certain closely related species. Coevolution was unapparent in other clades, suggesting the presence of paralogous genes.

  • where does Lecanora demissa ascomycota Lecanorales belong
    Lichenologist, 1999
    Co-Authors: Ulf Arup, Martin Grube
    Abstract:

    Abstract Abstract: Lecanora demissa (Korb.) Zahlbr. is a crustose, lobate lichen that produces soredia and conidiomata but no apothecia. Its placement in Lecanora has long been questioned but nothing better has been proposed. We have studied the nuclear rDNA of the ITS regions and the SSU of L. demissa . In an alignment of the ITS regions of several representatives of Lecanora s. lat. it could clearly be shown by a PAUP analysis, using Aspicilia caesiocinerea as outgroup, that L. demissa does not belong to Lecanora . In a PAUP analysis of sequences of the SSU from representatives of the order Lecanorales, using members of Saccharomycetales as outgroup, L. demissa clustered on a well-supported branch with Caloplaca chlorina . In a further analysis of the ITS sequences of L. demissa together with representatives of Caloplaca and Xanthoria using Protoparmelia as outgroup two most parsimonious trees were found. In these trees the L. demissa branch was well within a strongly supported clade with C. cerina , the type species of the genus Caloplaca . The sister taxon to L. demissa in this analysis was C. variabilis . Chemical data and characters of the conidiomata support the affinity with Caloplaca and the new combination C. demissa (KOrb.) Arup & Grube is therefore proposed. A lectotype for Imbricaria demissa has been designated. The phylogenetic analysis of several representatives of the genera Caloplaca and Xanthoria suggests that these genera are not monophyletic as presently circumscribed. Two large, monophyletic groups of species could be recognized, one with Xanthoria species mixed with lobate and crustose members of Caloplaca , and one with mainly crustose Caloplaca , including both species with orange or black apothecia.

Christian Printzen - One of the best experts on this subject based on the ideXlab platform.

  • the new genus pulvinora Lecanoraceae for species of the Lecanora pringlei group including the new species pulvinora stereothallina
    The Bryologist, 2021
    Co-Authors: Lidia S Yakovchenko, Evgeny A Davydov, Jason Hollinger, Frank Bungartz, Christian Parrinello, Christian Printzen
    Abstract:

    Phylogenetic reconstructions based on ITS/5.8S, mtSSU and nuLSU DNA sequence data suggest that Lecanora pringlei from North America and a closely related new species from the Altai Mountains, Russia, should be transferred to a new genus Pulvinora, phylogenetically related to Frutidella. It is distinguished by Lecanora-type asci, mycolecanorine apothecia soon becoming convex with an algal layer pushed below the hypothecium, and a pulvinate thallus with squamules at the tip of pseudopodetia-like, branched, pale brownish structures. Lecanora subcavicola and L. pringlei subsp. brandegeei do not belong to this new genus Pulvinora; consequently, we propose the new combination L. brandegeei to accommodate the latter taxon. Pulvinora stereothallina is distinguished from P. pringlei in the shape and size of its squamules (plane to concave, up to 3.0 mm long vs. remaining convex, up to 1.5 mm long), by the lack of maculae, the presence of a whitish pruina on the margins and elevated parts of its squamules, by apothecia coalescing into clusters (vs. single), an ochre-yellow to brownish (vs. colorless) proper exciple, larger ascospores, and different secondary metabolites. Lectotypes of Lecidea pringlei Tuck. and L. brandegeei Tuck. are designated here from the collections deposited in fh.

  • a preliminary phylogeny of the Lecanora saligna group with notes on species delimitation
    Lichenologist, 2021
    Co-Authors: Cristobal Ivanovich, Zdeněk Palice, Christian Dolnik, Volker Otte, Mohammad Sohrabi, Christian Printzen
    Abstract:

    Lecanora s. lat. is a genus of crustose, rarely placodioid lichens comprising c. 1000 recognized species and subdivided into several morphology-based groups. Some of these groups have been supported in phylogenetic analyses and segregated as new genera. One of the remaining groups that has not been previously studied by molecular methods in much detail, the L. saligna-group, includes corticolous and lignicolous crustose lichens, usually containing isousnic or usnic acid (or both) as major secondary metabolites. As part of our ongoing project ‘Lecanomics’, a phylogenetic analysis based on two loci was conducted and found the L. saligna-group to be divided into two main clades and several well-supported minor clades. The L. varia clade, chosen as one of the outgroups, emerged within the L. saligna-group. The majority of the clades are characterized by phenotypic differences. However, several well-supported clades share similarities with their sister groups, suggesting that species circumscriptions based solely on phenotypic characters may be too conservative to characterize the true species diversity present within the group. Also, there is evidence for some geographical separation of lineages; for example, most North American individuals, previously known as Lecanora saligna and L. albellula, form two clades separate from their European namesakes and are here preliminarily called ‘Lecanora sp. B’, ‘Lecanora sp. C’ and ‘Lecanora sp. D’. However, L. saligna and L. albellula also appear to occur in North America, and some specimens from the Caucasus and Iran cluster within the North American clades. Lecanora anopta and L. subravida are reported for the first time from Iran.

  • the phylogenetic position of species of Lecanora s l containing calycin and usnic acid with the description of Lecanora solaris yakovchenko davydov sp nov
    Lichenologist, 2019
    Co-Authors: Lidia S Yakovchenko, Evgeny A Davydov, Yoshihito Ohmura, Christian Printzen
    Abstract:

    Phylogenetic reconstructions based on ITS/5.8S and mtSSU DNA sequence data suggest a close relationship between two Lecanora species containing calycin and usnic acid and the Lecanora polytropa group. Lecanora solaris Yakovchenko & Davydov sp. nov. is described from the Altai Mountains in Russia. Its gross morphology resembles that of L. somervellii as both species have an effigurate, citrine-yellow thallus (due to the production of calycin). However, L. solaris is distinguished from L. somervellii by having a small, squamulose to marginally lobate umbilicate thallus and apothecia with a persistent margin, whereas L. somervellii has a large, distinctly placodioid thallus and an apothecial margin that is soon excluded.

  • Lecanora kohu a new species of Lecanora lichenised ascomycota Lecanoraceae from the chatham islands new zealand
    New Zealand Journal of Botany, 2017
    Co-Authors: Christian Printzen, Alan M Fryday, Dan Blanchon, P J De Lange, David M Houston, J R Rolfe
    Abstract:

    ABSTRACTLecanora kohu Printzen, Blanchon, Fryday et de Lange is described as new to science from Rangatira (South East Island), Chatham Islands. It is morphologically similar to L. symmicta (Ach.) Ach., from which it is distinguished by the continuous, areolate thallus, immersed apothecia with pale pink to pink-brown discs, and by the presence of atranorin and psoromic acid rather than usnic acid, zeorin and xanthones in the thallus. The new species is so far known only from Rangatira (South East Island), the southernmost of the three main islands of the Chatham Islands group where it was collected twice in 2015 on the bark of Melicytus chathamicus (Violaceae) and on the bark of an undescribed species of Muehlenbeckia (Polygonaceae), M. aff. australis. Using the New Zealand Threat Classification System, the new species has been assessed as ‘Data Deficient’.

  • a molecular phylogeny of the Lecanora varia group including a new species from western north america
    Mycological Progress, 2010
    Co-Authors: Sergio Perezortega, Toby Spribille, Zdeněk Palice, John A Elix, Christian Printzen
    Abstract:

    The phylogeny of the Lecanora varia group is inferred from ITS sequences using Bayesian and ML phylogenetic analysis methods. According to our data, usnic acid-containing, corticolous Lecanora species do not form a monophyletic group but occur in three major clades together with other groups of Lecanora and Protoparmeliopsis. The new combination Lecanora filamentosa (Stirt.) Elix & Palice is proposed. The new species Lecanora schizochromatica is described from northwestern North America. It produces atranorin as a major substance and is closely related to the morphologically and chemically similar L. filamentosa. The American Biatora pullula Tuck. is synonymised with Lecanora anopta Nyl., which is hereby reported for continental North America for the first time. The phylogenetic relationships between the major clades of Lecanora are still largely unresolved and require more intensive taxon and character sampling.

Thorsten H Lumbsch - One of the best experts on this subject based on the ideXlab platform.

  • diploschistes euganeus erstmals fur die schweiz und Lecanora pseudistera neu fur das tessin nachgewiesen
    Herzogia, 2013
    Co-Authors: Thorsten H Lumbsch
    Abstract:

    Abstract: Lumbsch, H. T. 2013. Diploschistes euganeus firstly recorded for Switzerland and Lecanora pseudistera newly recorded for Ticino. - Herzogia 26: 197–199. Diploschistes euganeus and Lecanora pseudistera were found in 2012 in Ticino on an excursion organized by the BLAM. The localities are listed and the distribution and diagnostic features to distinguish them from similar species are briefly discussed.

  • two new species and a new record of Lecanora sensu stricto Lecanoraceae ascomycota from india
    Phytotaxa, 2012
    Co-Authors: Khwanruan Papong, Sanjeeva Nayaka, Thorsten H Lumbsch
    Abstract:

    The new species Lecanora girigangaensis and L. upretii from Himachal Pradesh in India are described. The former has large apothecia with a constricted base, melacarpella- type amphithecium, glabrata- type epihymenium, hyaline hypothecium, and contains atranorin and usnic acid, while the latter is characterized by having yellow-brown to pale brown apothecial discs, a melacarpella- type amphithecium, pulicaris- type epihymenium, and contains atranorin and usnic acid. Also, Lecanora subalbellina is recorded from Asia for the first time.

  • new and noteworthy species of the lichen genus Lecanora ascomycota Lecanoraceae from south korea
    Lichenologist, 2011
    Co-Authors: L U Lei, Yogesh Joshi, Young Jin Koh, John A Elix, Hai Ying Wang, Thorsten H Lumbsch, Jae-seoun Hur
    Abstract:

    Two new species, Lecanora hafelliana L. Lu, Y. Joshi & Hur and L. loekoesii Y. Joshi, L. Lu & Hur, are described as new to science from South Korea and eight species, L. campestris (Schaer.) Hue, L. cenisia Ach., L. nipponica H. Miyaw., L. perplexa Brodo, L. plumosa Mull. Arg., L. polytropa (Hoffm.) Rabenh., L. subrugosa Nyl. and L. sulcata (Hue) H. Miyaw., are recorded from South Korea for the first time. Lecanora hafelliana is characterized by the presence of hafellic acid, which is reported for the first time in this genus, while L. loekoesii is characterized by multispored asci and a thallus containing norstictic acid.

  • a taxonomic survey of Lecanora sensu stricto in thailand Lecanoraceae ascomycota
    Lichenologist, 2011
    Co-Authors: Khwanruan Papong, Thorsten H Lumbsch
    Abstract:

    The species of Lecanora sensu stricto occurring in Thailand are revised. Twenty-eight species are accepted with one new species, L. kansriae described for a taxon with small crystals in the amphithecium and containing the stictic acid chemosyndrome. Eight species are recorded from Thailand for the first time: L. coronulans, L. farinacea, L. interjecta, L. leproplaca, L. melaleuca, L. plumosa, L. pseudargentata, and L. toroyensis. Previous records of L. casuarinophila, L. insignis, L. pulicaris, and L. subgranulata are shown to be based on misidentifications. The new combination Vainionora flavidorufa is proposed for Lecanora flavidorufa Hue (syn. L. lividocarnea Vain. and L. lividoglauca Vain.). A key for the identification of the treated species is provided.

  • a new species and new records of Lecanora Lecanoraceae ascomycota from south east asia
    Lichenologist, 2011
    Co-Authors: Khwanruan Papong, Kansri Boonpragob, Thorsten H Lumbsch
    Abstract:

    The new species Lecanora ulrikii from Bhutan and Thailand is described. It belongs to Lecanora s. str. and is characterized by relatively large, orange-brown to brown apothecia that are constricted at the base, a clear to inspersed hymenium, an epihymenium of the glabrata -type, and by the presence of atranorin, usnic acid and the isoarthothelin chemosyndrome. Further, three species, L. arthothelinella, L. austrotropica and L. subimmergens , are reported for the first time from Thailand.

Saarela Jeffery - One of the best experts on this subject based on the ideXlab platform.

Juliane Blaha - One of the best experts on this subject based on the ideXlab platform.

  • the new species Lecanora bicinctoidea its position and considerations about phenotypic evolution in the Lecanora rupicola group
    Mycologia, 2007
    Co-Authors: Juliane Blaha, Martin Grube
    Abstract:

    A phylogenetic analysis of the Lecanora rupicola group based on combined nITS rDNA and b- tubulin sequences and a combined dataset of ITS, b- tubulin and partial sequences of polyketide synthase genes reveals a previously unrecognized species, which here is introduced under the name Lecanora bicinctoidea. The new species is a sister group of the L. swartzii complex (including L. swartzii and L. lojkaeana), which is characterized by eucorticate ascomata, and a morphological diversity that includes also a dwarf-fruticose lineage. The preferential occurrence on vertical to overhanging siliceous rocks corresponds more closely to L. swartzii. A detailed investigation of phenotypic characters reveals that the new species differs from the superficially similar morphospecies L. bicincta in several ways, such as a thallus of comparatively small areoles and broadly sessile ascomata and the development of an am- phithecial cortex devoid of algal remnants (i.e. an eucortex). L. bicinctoidea contains methyl 3a-hydroxy- 4-O-demethylbarbatate, a chemical compound not known from other members of the L. rupicola group. We also discuss the importance of eucortex formation as one of several factors that are involved in the evolution of substrate-detached thallus structures.

  • high photobiont diversity associated with the euryoecious lichen forming ascomycete Lecanora rupicola Lecanoraceae ascomycota
    Biological Journal of The Linnean Society, 2006
    Co-Authors: Juliane Blaha, Elisabeth Baloch, Martin Grube
    Abstract:

    The diversity and phylogenetic position of photobionts in the widespread saxicolous, crustose lichen-forming asco- mycete Lecanora rupicola s.l. is presented. The algal partners of this lichen species complex belong to diverse and unrelated lineages in the genus Trebouxia . Specimens were sampled from different habitats and geographical ori- gins. Either whole thallus DNA extractions or minute fragments of the algal layer of the lichen thallus were sub- jected to polymerase chain reaction, using primers that specifically amplify internal transcribed spacer rDNA of the photobionts. No correlations between different chemical races of L. rupicola with particular lineages of Trebouxia spp. were found. Irrespective of the different algal partners, all lichen thalli abundantly developed ascomata. L. rupicola apparently maintains full fecundity with a low degree of selectivity for photobionts, which promotes the occurrence of this lichen-forming species in ample ecological situations. © 2006 The Linnean Society of London, Bio- logical Journal of the Linnean Society , 2006, 88 , 283-293. ADDITIONAL KEYWORDS: Lecanora rupicola - lichens - phylogeny - selectivity - symbiosis - Trebouxio- phyceae - Trebouxia .

  • on the phylogeny of some polyketide synthase genes in the lichenized genus Lecanora
    Fungal Biology, 2003
    Co-Authors: Martin Grube, Juliane Blaha
    Abstract:

    The ketosynthase domains of putative polyketide synthase (PKS) genes from 15 species in the lichenized genus Lecanora as well as three representatives of other genera were amplified and sequenced using conserved primers. A phylogenetic analysis was carried out with the corresponding amino acid sequences, including those of non-lichenized fungi. The phylogenetic hypothesis places all PKS sequences from Lecanora and the other genera in a clade of PKSs that produce complex aromatic compounds. The PKSs from Lecanora are found in two distinct clades. One of these forms a monophyletic group with PKSs producing precursors of dihydroxy naphthalenes from non-lichenized species. This includes PKSs from the L. rupicola group and several other species which are not closely related. The other clade represents at least one functionally different protein and has no close relationships with known PKSs from other fungi. A comparison between an ITS phylogeny of the species with their DNA sequences of ketosynthase domains reveals similar PKS genes in certain closely related species. Coevolution was unapparent in other clades, suggesting the presence of paralogous genes.