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您的检索式：作者名="Toby Spribille"
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| 1 | Global assessment of genetic variation and phenotypic plasticity in the lichen-forming species Tephromela atra显示文摘Understanding how many species exist and the processes by which they form remains a central topic of ecological and evolutionary biology,but represents a special challenge within microbial groups.The lichen-forming fungi represent one of the best examples in which species evolution and diversity create patterns of high phenotypic plasticity coupled with wide geographic distributions.We sampled the lichen-forming species Tephromela atra and related species at a world-wide scale to reconstruct a phylogenetic hypothesis using three nuclear markers.Samples were also studied for morphological and chemical traits to assess how well the phenotypic relationships with species,previously segregated from T.atra,agrees with molecular data.We used a genealogical concordance approach and identified 15 monophyletic clades,which may represent independent lineages.By combining morphological and chemical characters,ecological preferences and geographic origin we distinguish six different species.Although subtle phenotypical traits are frequently used for describing previously cryptic species in fungi,the continuum of variability found in morphology and chemical patterns in T.atra prevents the description of new taxa with characteristic traits.We observed that phenotypic characters arise in parallel at local or regional scale but are not correlated with genetic isolation.Therefore,they are insufficient for characterizing species with broad geographic ranges within T.atra. | Lucia Muggia Sergio Pérez-Ortega Alan Fryday Toby Spribille Martin Grube | 2014 | Fungal Diversity2014，，1： | 0 |
| 2 | Expanded taxon sampling disentangles evolutionary relationships and reveals a new family in Peltigerales (Lecanoromycetidae, Ascomycota)显示文摘Lichens that incorporate cyanobacterial symbionts(cyanolichens)are an ecologically key group of species used as biomonitors at all latitudes.Cyanolichen evolution is however based on intense studies of few keystone species and the bulk of species diversity,especially of small species in cold climates,has yet to be accounted for in phylogenetic studies.We assembled an expanded data set including members of all nine currently accepted Peltigeralean families as well as hitherto undersampled representatives of small,radially symmetrical,placodioid cyanolichen genera from the Northern and Southern Hemispheres.Bayesian and maximum likelihood consensus trees from our multilocus analyses(nuSSU,nuLSU and mtSSU)recovered the genera Koerberia,Vestergrenopsis and Steinera as a new,fully supported,family-level clade within the Peltigerales.This clade is further supported by a posteriori morphological analysis and we describe it here as the new family Koerberiaceae.The recently described and physiognomically similar genus Steineropsis,by contrast,is recovered as sister to Protopannaria in the Pannariaceae(Collematineae).Previous analyses have recovered strong monophyletic groups around Pannariaceae,Lobariaceae and Peltigeraceae.We discuss in detail the phylogenetic relationships of all these taxa,provide a pan-Peltigeralean overview of phenotypic characteristics and illustrate all major ascus apical structures.Our topology provides strong backbone support for the sister relationship of Peltigerineae to Collematineae as well as for most currently recognized families of the Peltigerales.The following new combinations are made:Steinera symptychia(Tuck.)T.Sprib.&Muggia,and Vestergrenopsis sonomensis(Tuck.)T.Sprib.&Muggia. | Toby Spribille Lucia Muggia | 2013 | Fungal Diversity2013，，1： | 0 |
| 3 | Diagnostics for a troubled backbone:testing topological hypotheses of trapelioid lichenized fungi in a large-scale phylogeny of Ostropomycetidae(Lecanoromycetes)显示文摘Trapelioid fungi constitute a widespread group of mostly crust-forming lichen mycobionts that are key to understanding the early evolutionary splits in the Ostropomycetidae,the second-most species-rich subclass of lichenized Ascomycota.The uncertain phylogenetic resolution of the approximately 170 species referred to this group contributes to a poorly resolved backbone for the entire subclass.Based on a data set including 657 newly generated sequences from four ribosomal and four protein-coding gene loci,we tested a series of a priori and new evolutionary hypotheses regarding the relationships of trapelioid clades within Ostropomycetidae.We found strong support for a monophyletic group of nine core trapelioid genera but no statistical support to reject the long-standing hypothesis that trapelioid genera are sister to Baeomycetaceae or Hymeneliaceae.However,we can reject a sister group relationship to Ostropales with high confidence.Our data also shed light on several longstanding questions,recovering Anamylopsoraceae nested within Baeomycetaceae,elucidating two major monophyletic groups within trapelioids(recognized here as Trapeliaceae and Xylographaceae),and rejecting the monophyly of the genus Rimularia.We transfer eleven species of the latter genus to Lambiella and describe the genus Parainoa to accommodate a previously misunderstood species of Trapeliopsis.Past phylogenetic studies in Ostropomycetidae have invoked Bdivergence order^for drawing taxonomic conclusions on higher level taxa.Our data show that if backbone support is lacking,contrasting solutions may be recovered with different or added data.We accordingly urge caution in concluding evolutionary relationships from unresolved phylogenies. | Philipp Resl Kevin Schneider Martin Westberg Christian Printzen Zdeněk Palice Göran Thor Alan Fryday Helmut Mayrhofer Toby Spribille | 2015 | Fungal Diversity2015，，4： | 0 |
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