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2篇 您的检索式:作者名="Felix Grewe"
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1Phylogenomic analysis of 2556 single-copy protein-coding genes resolves most evolutionary relationships for the major clades in the most diverse group of lichen-forming fungi显示文摘Phylogenomic datasets continue to enhance our understanding of evolutionary relationships in many lineages of organisms.However,genome-scale data have not been widely implemented in reconstructing relationships in lichenized fungi.Here we generate a data set comprised of 2556 single-copy protein-coding genes to reconstruct previously unresolved rela-tionships in the most diverse family of lichen-forming fungi,Parmeliaceae.Our sampling included 51 taxa,mainly from the subfamily Parmelioideae,and represented six of the seven previously identified major clades within the family.Our results provided strong support for the monophyly of each of these major clades and most backbone relationships in the topology were recovered with high nodal support based on concatenated dataset and species tree analyses.The alectorioid clade was strongly supported as sister-group to all remaining clades,which were divided into two major sister-groups.In the first major clade the anzioid and usneoid clades formed a strongly supported sister-group relationship with the cetrarioid?hypogymnioid group.The sister-group relationship of Evernia with the cetrarioid clade was also strongly supported,whereas that between the anzioid and usneoid clades needs further investigation.In the second major clade Oropogon and Platismatia were sister to the parmelioid group,while the position of Omphalora was not fully resolved.This study demonstrates the power of genome-scale data sets to resolve long-standing,ambiguous phylogenetic rela-tionships of lichen-forming fungi.Furthermore,the topology inferred in this study will provide a valuable framework for better understanding diversification in the most diverse lineage of lichen-forming fungi,Parmeliaceae.David Pizarro Pradeep K.Divakar Felix Grewe Steven D.Leavitt Jen-Pan Huang Francesco Dal Grande Imke Schmitt Mats Wedin Ana Crespo H.Thorsten Lumbsch 2018Fungal Diversity2018,,5:0
2Phylogenomic reconstruction addressing the Peltigeralean backbone(Lecanoromycetes,Ascomycota)显示文摘Rapid radiations in Fungi are only beginning to be studied with phylogenomic data.The evolutionary history of the lichenized fungal order Peltigerales has not been well resolved,particularly for the Collematineae.Here,we used concatenation and coalescent-based species tree methods to reconstruct the phylogeny of the Peltigerales based on sequences of 125 nuclear single-copy exon sequences among 60 samples,representing 58 species.Despite uneven,lineage-specific missing data and significant topological incongruence of individual exon trees,the resulting phylogenies were concordant and successfully resolved the phylogenetic relationships of the Peltigerales.Relationships in the Collematineae were defined by short branches and lower nodal support than in other parts of the tree,due in part to conflicting signal in exon trees,suggesting rapid diversification events in the early evolution of the suborder.Using tree distance measures,we were able to identify a minimum subset of exons that could reconstruct phylogenetic relationships in Peltigerales with higher support than the 125-exon dataset.Comparisons between the minimum and complete datasets in species tree inferences,bipartition analyses,and divergence time estimations displayed similar results,although the minimum dataset was characterized by higher levels of error in estimations of divergence times.Contrasting our inferences from the complete and minimum datasets to those derived from few nuclear and mitochondrial loci reveal that our topology is concordant with topologies reconstructed using the nuclear large subunit and mitochondrial small subunit ribosomal DNA markers,but the target capture datasets had much higher support values.We demonstrated how target capture approaches can effectively decipher ancient rapid radiations in cases where well resolved individual exon trees are sufficiently sampled and how to identify subsets of loci that are appropriate for fungal order-level phylogenetics.Todd J.Widhelm Felix Grewe Bernard Goffinet Mats Wedin Trevor Goward Luis F.Coca Isabel Distefano Alica Košuthová· H.Thorsten Lumbsch 2021Fungal Diversity2021,,5:0
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