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Nico Cellinese - One of the best experts on this subject based on the ideXlab platform.

  • origins of east asian campanuloideae Campanulaceae diversity
    Molecular Phylogenetics and Evolution, 2018
    Co-Authors: Kioug Yoo, Andrew A Crowl, Kyungah Kim, Kyeongsik Cheon, Nico Cellinese
    Abstract:

    Abstract The Campanulaceae comprises approximately 2300 species that are distributed among five major lineages: Campanuloideae, Cyphioideae, Cyphocarpoideae, Lobelioideae, and Nemacladoideae. Of these, the Campanuloideae, a primarily Old World clade, has the largest diversity in East Asia. In this study, we reconstruct the phylogeny of East Asian Campanuloideae based on one nuclear gene (i.e., PPR70) and five plastid markers (i.e., atpB, matK, petD, rbcL, and trnL-trnF). We then use this phylogenetic framework to reconstruct the biogeographical history of the genus. Our molecular dataset includes 376 of the 1045 currently recognized species in the Campanuloideae. Of the 376 sampled species, 116 are from East Asia, representing ca. 60% of the East Asian Campanuloideae. Our PPR dataset included sequences for 156 accessions, representing 54 species, while our plastid dataset included sequences for 305 accessions, representing 354 species. Phylogenetic analyses recovered three large clades containing East Asian taxa: Campanulinae, Platycodinae, and Wahlenberginae. The historical assembly of Campanuloideae diversity in East Asia appears to have resulted from numerous, independent movements from Africa, Europe/W. Asia, and North America. Africa was inferred as the ancestral range for the Campanuloideae. Movement of the largest East Asian clade (Platycodinae) occurred at approximately 53.1 Ma (46.6–58.73 95% HPD) from Africa, with much of the current diversity found in East Asia having resulted from in situ diversification. Thirteen additional movements into East Asia, primarily from Europe/Western Asia, occurred subsequently. One dispersal event from western North America was also inferred. In contrast, only six movements out of East Asia were found. Our results suggest that East Asia has acted primarily as a sink for Campanuloideae diversity, with Europe, Western Asia, and Africa representing major source areas.

  • naming diversity in an evolutionary context phylogenetic definitions of the roucela clade Campanulaceae campanuloideae and the cryptic taxa within
    Ecology and Evolution, 2017
    Co-Authors: Andrew A Crowl, Nico Cellinese
    Abstract:

    In recent times, evolution has become a central tenet of taxonomy, but nomenclature has consistently been decoupled from the tree-thinking process, often leading to significant issues in reconciling traditional (Linnaean) names with clades in the Tree of Life. Recent evolutionary studies on the Roucela clade, a group of endemic plants found in the Mediterranean Basin, motivated the establishment of phylogenetic concepts to formally anchor clade names on the Campanuloideae (Campanulaceae) tree. These concepts facilitate communication of clades that approximate traditionally defined groups, in addition to naming newly discovered cryptic diversity in a phylogenetic framework.

  • a global perspective on Campanulaceae biogeographic genomic and floral evolution
    American Journal of Botany, 2016
    Co-Authors: Andrew A Crowl, Nicholas W Miles, Clayton J Visger, Kimberly Hansen, Tina J Ayers, Rosemarie Haberle, Nico Cellinese
    Abstract:

    PREMISE OF THE STUDY The Campanulaceae are a diverse clade of flowering plants encompassing more than 2300 species in myriad habitats from tropical rainforests to arctic tundra. A robust, multigene phylogeny, including all major lineages, is presented to provide a broad, evolutionary perspective of this cosmopolitan clade. METHODS We used a phylogenetic framework, in combination with divergence dating, ancestral range estimation, chromosome modeling, and morphological character reconstruction analyses to infer phylogenetic placement and timing of major biogeographic, genomic, and morphological changes in the history of the group and provide insights into the diversification of this clade across six continents. KEY RESULTS Ancestral range estimation supports an out-of-Africa diversification following the Cretaceous-Tertiary extinction event. Chromosomal modeling, with corroboration from the distribution of synonymous substitutions among gene duplicates, provides evidence for as many as 20 genome-wide duplication events before large radiations. Morphological reconstructions support the hypothesis that switches in floral symmetry and anther dehiscence were important in the evolution of secondary pollen presentation mechanisms. CONCLUSIONS This study provides a broad, phylogenetic perspective on the evolution of the Campanulaceae clade. The remarkable habitat diversity and cosmopolitan distribution of this lineage appears to be the result of a complex history of genome duplications and numerous long-distance dispersal events. We failed to find evidence for an ancestral polyploidy event for this clade, and our analyses indicate an ancestral base number of nine for the group. This study will serve as a framework for future studies in diverse areas of research in Campanulaceae.

  • taxonomic and biogeographic implications of a phylogenetic analysis of the Campanulaceae based on three chloroplast genes
    Taxon, 2009
    Co-Authors: Rosemarie C Haberle, Linda A Raubeson, Nico Cellinese, Ashley Dang, Tammy Lee, Cynthia Penaflor, Helen Cortesburns, Andrea Oestreich, Erika J Edwards, Sangtae Kim
    Abstract:

    Campanulaceae are a large, nearly cosmopolitan angiosperm family that are well-accepted as monophyletic but whose intrafamilial and intrageneric relationships are controversial. We used DNA sequences of the chloroplast genes atpB, matK, and rbcL to infer the phylogeny of 102 taxa in 41 genera plus four outgroup taxa. Our sampling represents a wide taxonomic and geographic diversity from within the family. Results from maximum parsimony and Bayesian analyses provide strong evidence for two major clades in the family, with the platycodonoids sister to the remaining members of the family, the wahlenbergioids and campanuloids. There are two clear divisions within the campanuloids that correspond well with the historical Campanula s.str. and Rapunculus groups ofBoissier and Fedorov. The phylogenetic positions of the Northern European species Wahlenbergia hederacea and the genus Jasione remain unresolved. Our results also provide evidence that the large, inclusive genera Wahlenbergia and Campanula are polyphyletic, and the smaller, segregate genera Symphyandra, Prismatocarpus, and Legousia are not monophyletic. Insights are provided into the different biogeographic origins of several oceanic island endemics. Heterochaenia, Nesocodon, and Berenice occur in a single clade, which suggests a single colonization of the Indian Ocean Mascarene Islands. Conversely, Wahlerrbergia linifolia and W. angustifolia of St. Helena Island in the mid-Atlantic are not sister taxa. The Macaronesian taxa, Canarina canariensis, and Musschia aurea, which display convergent bird-pollination adaptations and with Azorina vidalii of the Azores, woody growth form, fall into separate major lineages. The North American Campanulaceae also do not form a monophyletic group, providing evidence that these taxa are the descendents of multiple introductions onto the North American continent.

  • historical biogeography of the endemic Campanulaceae of crete
    Journal of Biogeography, 2009
    Co-Authors: Nico Cellinese, Stephen A. Smith, Rosemarie C Haberle, Erika J Edwards, Sangtae Kim, Manolis Avramakis, Michael J Donoghue
    Abstract:

    Aim The clade Campanulaceae in the Cretan area is rich in endemics, with c. 50% of its species having restricted distributions. These species are analysed in the context of a larger phylogeny of the Campanulaceae. Divergence times are calculated and hypotheses of vicariance and dispersal are tested with the aim of understanding whether Cretan lineages represent remnants of an older continental flora. Location The Cretan area: Crete and the Karpathos Islands (Greece). Methods We obtained chloroplast DNA sequence data from rbcL, atpB and matK genes for 102 ingroup taxa, of which 18 are from the Cretan area, 11 are endemics, and two have disjunct, bi-regional distributions. We analysed the data using BEAST, a Bayesian approach that simultaneously infers the phylogeny and divergence times. We calibrated the tree by placing a seed fossil in the phylogeny, and used published age estimates as a prior for the root. Results The phylogenetic reconstruction shows that all Campanula species fall within a well-supported campanuloid clade; however, Campanula is highly polyphyletic. The Cretan endemics do not form a monophyletic group, and species are scattered throughout the campanuloid clade. Therefore, the Cretan taxa did not evolve following a single vicariance or dispersal event. Most Cretan lineages represent remnants of an older continental flora, with the exception of one clade that radiated in situ after island isolation, and one lineage that appears to have arrived by dispersal. Main conclusions Most Cretan species were present in the islands at the time of their isolation, and very little long-distance dispersal to Crete and diversification within Crete has occurred since then. Endemism is probably driven by loss of species on the mainland after island isolation. Species on the islands may have been more widespread in the past, but they are now restricted to often inaccessible areas, probably as a result of human pressure.

Andrew A Crowl - One of the best experts on this subject based on the ideXlab platform.

  • origins of east asian campanuloideae Campanulaceae diversity
    Molecular Phylogenetics and Evolution, 2018
    Co-Authors: Kioug Yoo, Andrew A Crowl, Kyungah Kim, Kyeongsik Cheon, Nico Cellinese
    Abstract:

    Abstract The Campanulaceae comprises approximately 2300 species that are distributed among five major lineages: Campanuloideae, Cyphioideae, Cyphocarpoideae, Lobelioideae, and Nemacladoideae. Of these, the Campanuloideae, a primarily Old World clade, has the largest diversity in East Asia. In this study, we reconstruct the phylogeny of East Asian Campanuloideae based on one nuclear gene (i.e., PPR70) and five plastid markers (i.e., atpB, matK, petD, rbcL, and trnL-trnF). We then use this phylogenetic framework to reconstruct the biogeographical history of the genus. Our molecular dataset includes 376 of the 1045 currently recognized species in the Campanuloideae. Of the 376 sampled species, 116 are from East Asia, representing ca. 60% of the East Asian Campanuloideae. Our PPR dataset included sequences for 156 accessions, representing 54 species, while our plastid dataset included sequences for 305 accessions, representing 354 species. Phylogenetic analyses recovered three large clades containing East Asian taxa: Campanulinae, Platycodinae, and Wahlenberginae. The historical assembly of Campanuloideae diversity in East Asia appears to have resulted from numerous, independent movements from Africa, Europe/W. Asia, and North America. Africa was inferred as the ancestral range for the Campanuloideae. Movement of the largest East Asian clade (Platycodinae) occurred at approximately 53.1 Ma (46.6–58.73 95% HPD) from Africa, with much of the current diversity found in East Asia having resulted from in situ diversification. Thirteen additional movements into East Asia, primarily from Europe/Western Asia, occurred subsequently. One dispersal event from western North America was also inferred. In contrast, only six movements out of East Asia were found. Our results suggest that East Asia has acted primarily as a sink for Campanuloideae diversity, with Europe, Western Asia, and Africa representing major source areas.

  • naming diversity in an evolutionary context phylogenetic definitions of the roucela clade Campanulaceae campanuloideae and the cryptic taxa within
    Ecology and Evolution, 2017
    Co-Authors: Andrew A Crowl, Nico Cellinese
    Abstract:

    In recent times, evolution has become a central tenet of taxonomy, but nomenclature has consistently been decoupled from the tree-thinking process, often leading to significant issues in reconciling traditional (Linnaean) names with clades in the Tree of Life. Recent evolutionary studies on the Roucela clade, a group of endemic plants found in the Mediterranean Basin, motivated the establishment of phylogenetic concepts to formally anchor clade names on the Campanuloideae (Campanulaceae) tree. These concepts facilitate communication of clades that approximate traditionally defined groups, in addition to naming newly discovered cryptic diversity in a phylogenetic framework.

  • a global perspective on Campanulaceae biogeographic genomic and floral evolution
    American Journal of Botany, 2016
    Co-Authors: Andrew A Crowl, Nicholas W Miles, Clayton J Visger, Kimberly Hansen, Tina J Ayers, Rosemarie Haberle, Nico Cellinese
    Abstract:

    PREMISE OF THE STUDY The Campanulaceae are a diverse clade of flowering plants encompassing more than 2300 species in myriad habitats from tropical rainforests to arctic tundra. A robust, multigene phylogeny, including all major lineages, is presented to provide a broad, evolutionary perspective of this cosmopolitan clade. METHODS We used a phylogenetic framework, in combination with divergence dating, ancestral range estimation, chromosome modeling, and morphological character reconstruction analyses to infer phylogenetic placement and timing of major biogeographic, genomic, and morphological changes in the history of the group and provide insights into the diversification of this clade across six continents. KEY RESULTS Ancestral range estimation supports an out-of-Africa diversification following the Cretaceous-Tertiary extinction event. Chromosomal modeling, with corroboration from the distribution of synonymous substitutions among gene duplicates, provides evidence for as many as 20 genome-wide duplication events before large radiations. Morphological reconstructions support the hypothesis that switches in floral symmetry and anther dehiscence were important in the evolution of secondary pollen presentation mechanisms. CONCLUSIONS This study provides a broad, phylogenetic perspective on the evolution of the Campanulaceae clade. The remarkable habitat diversity and cosmopolitan distribution of this lineage appears to be the result of a complex history of genome duplications and numerous long-distance dispersal events. We failed to find evidence for an ancestral polyploidy event for this clade, and our analyses indicate an ancestral base number of nine for the group. This study will serve as a framework for future studies in diverse areas of research in Campanulaceae.

Yasushi Ohizumi - One of the best experts on this subject based on the ideXlab platform.

Kioug Yoo - One of the best experts on this subject based on the ideXlab platform.

  • origins of east asian campanuloideae Campanulaceae diversity
    Molecular Phylogenetics and Evolution, 2018
    Co-Authors: Kioug Yoo, Andrew A Crowl, Kyungah Kim, Kyeongsik Cheon, Nico Cellinese
    Abstract:

    Abstract The Campanulaceae comprises approximately 2300 species that are distributed among five major lineages: Campanuloideae, Cyphioideae, Cyphocarpoideae, Lobelioideae, and Nemacladoideae. Of these, the Campanuloideae, a primarily Old World clade, has the largest diversity in East Asia. In this study, we reconstruct the phylogeny of East Asian Campanuloideae based on one nuclear gene (i.e., PPR70) and five plastid markers (i.e., atpB, matK, petD, rbcL, and trnL-trnF). We then use this phylogenetic framework to reconstruct the biogeographical history of the genus. Our molecular dataset includes 376 of the 1045 currently recognized species in the Campanuloideae. Of the 376 sampled species, 116 are from East Asia, representing ca. 60% of the East Asian Campanuloideae. Our PPR dataset included sequences for 156 accessions, representing 54 species, while our plastid dataset included sequences for 305 accessions, representing 354 species. Phylogenetic analyses recovered three large clades containing East Asian taxa: Campanulinae, Platycodinae, and Wahlenberginae. The historical assembly of Campanuloideae diversity in East Asia appears to have resulted from numerous, independent movements from Africa, Europe/W. Asia, and North America. Africa was inferred as the ancestral range for the Campanuloideae. Movement of the largest East Asian clade (Platycodinae) occurred at approximately 53.1 Ma (46.6–58.73 95% HPD) from Africa, with much of the current diversity found in East Asia having resulted from in situ diversification. Thirteen additional movements into East Asia, primarily from Europe/Western Asia, occurred subsequently. One dispersal event from western North America was also inferred. In contrast, only six movements out of East Asia were found. Our results suggest that East Asia has acted primarily as a sink for Campanuloideae diversity, with Europe, Western Asia, and Africa representing major source areas.

  • complete chloroplast genome sequence of adenophora remotiflora Campanulaceae
    Mitochondrial DNA, 2016
    Co-Authors: Kyungah Kim, Kyeongsik Cheon, Sukil Jang, Kioug Yoo
    Abstract:

    AbstractThe complete chloroplast genome of Adenophora remotiflora was determined in this study. The total genome size was 171 724 bp in length, containing a pair of inverted repeats of 27 437 bp, which were separated by large single copy and small single copy of 105 555 bp and 11 295 bp, respectively. The overall GC contents of the plastid genome were 38.8%. One hundred and twelve unique genes were annotated, including 78 protein coding genes, 30 tRNA genes and 4 rRNA genes. In these genes, 15 genes contained one intron and 2 genes had two introns. A phylogenetic tree showed that Adenophora remotiflora was closely related to Hanabusaya asiatica.

Schaefer Hanno - One of the best experts on this subject based on the ideXlab platform.