uu.seUppsala universitets publikationer
Ändra sökning
Avgränsa sökresultatet
1 - 36 av 36
RefereraExporteraLänk till träfflistan
Permanent länk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Träffar per sida
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sortering
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
  • Standard (Relevans)
  • Författare A-Ö
  • Författare Ö-A
  • Titel A-Ö
  • Titel Ö-A
  • Publikationstyp A-Ö
  • Publikationstyp Ö-A
  • Äldst först
  • Nyast först
  • Skapad (Äldst först)
  • Skapad (Nyast först)
  • Senast uppdaterad (Äldst först)
  • Senast uppdaterad (Nyast först)
  • Disputationsdatum (tidigaste först)
  • Disputationsdatum (senaste först)
Markera
Maxantalet träffar du kan exportera från sökgränssnittet är 250. Vid större uttag använd dig av utsökningar.
  • 1.
    Beier, B.-A.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    A revision of Fagonia (Zygophyllaceae)Ingår i: Systematics and BiodiversityArtikel i tidskrift (Refereegranskat)
  • 2.
    Beier, B.-A.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Two new unifoliolate species of Fagonia (Zygophyllaceae) from the Horn of Africa region, and the resurrection of F. subinermis from Iran2001Ingår i: Nordic Journal of Botany, Vol. 21, s. 449-455Artikel i tidskrift (Refereegranskat)
  • 3.
    Beier, B.-A.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Chase, M. W.
    Thulin, M.
    Phylogenetic relationships and taxonomy of subfamily Zygophylloideae (Zygophyllaceae) based on molecular and morphological data2003Ingår i: Plant Systematics and Evolution, Vol. 240, s. 10-39Artikel i tidskrift (Refereegranskat)
  • 4.
    Beier, B.-A.
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Nylander, J. A. A.
    Chase, M. W.
    Thulin, M.
    Phylogenetic relationships and biogeography of the desert plant genus Fagonia (Zygophyllaceae), inferred by parsimony and Bayesian model averagingIngår i: Molecular Phylogenetics and EvolutionArtikel i tidskrift (Refereegranskat)
  • 5.
    Beier, Björn-Axel
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Phylogeny and Taxonomy of Subfamily Zygophylloideae (Zygophyllaceae) with Special Reference to the Genus Fagonia2003Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Members of Zygophylloideae are shrubs, shrublets and herbs of arid and semiarid areas of almost all continents, and many of the species are major components of the vegetation in their areas of distribution. A phylogenetic analysis of Zygophylloideae based on noncoding trnL plastid DNA sequences and morphological data, indicates that the currently recognised genera Augea, Tetraena, and Fagonia, are embedded in Zygophyllum. A new generic classification based on six monophyletic and morphologically distinctive entities is proposed here: Augea, Fagonia, Melocarpum, Roepera, Tetraena and Zygophyllum.

    The taxonomy of the genus Fagonia is revised in detail. A key to the 34 species recognised is presented, as well as descriptions and distribution maps for each species. Five new species are described and illustrated, F. densispina, F. gypsophila and F. latistipulata from Somalia, and F. hadramautica and F. mahrana from the southern part of the Arabian peninsula. Of the accepted species, 26 are restricted to the Old World and eight to the New World. The names of all four species of Fagonia currently on the IUCN Red List of Threatened Plants are put into synonymy. Instead, eight other species are proposed for this list.

    Relationships within Fagonia are inferred from analysis of plastid trnL intron and nuclear ribosomal ITS sequences. The phylogenetic analysis is performed using parsimony and Bayesian model averaging. All species of Fagonia in the Old World, except F. cretica, form a weakly supported clade, and all Fagonia species of the New World, except F. scoparia, form a second, well supported clade, sister to the Old World clade. Fagonia scoparia, endemic to northeastern Mexico, is sister to all other Fagonia species. Vicariance-dispersal analysis indicated that the occurrences of Fagonia in South America and southern Africa are due to dispersals, and that the ancestor of Fagonia had a distribution in agreement with the boreotropics hypothesis.

    Delarbeten
    1. Phylogenetic relationships and taxonomy of subfamily Zygophylloideae (Zygophyllaceae) based on molecular and morphological data
    Öppna denna publikation i ny flik eller fönster >>Phylogenetic relationships and taxonomy of subfamily Zygophylloideae (Zygophyllaceae) based on molecular and morphological data
    2003 Ingår i: Plant Systematics and Evolution, Vol. 240, s. 10-39Artikel i tidskrift (Refereegranskat) Published
    Identifikatorer
    urn:nbn:se:uu:diva-90949 (URN)
    Tillgänglig från: 2003-10-15 Skapad: 2003-10-15Bibliografiskt granskad
    2. Two new unifoliolate species of Fagonia (Zygophyllaceae) from the Horn of Africa region, and the resurrection of F. subinermis from Iran
    Öppna denna publikation i ny flik eller fönster >>Two new unifoliolate species of Fagonia (Zygophyllaceae) from the Horn of Africa region, and the resurrection of F. subinermis from Iran
    2001 Ingår i: Nordic Journal of Botany, Vol. 21, s. 449-455Artikel i tidskrift (Refereegranskat) Published
    Identifikatorer
    urn:nbn:se:uu:diva-90950 (URN)
    Tillgänglig från: 2003-10-15 Skapad: 2003-10-15Bibliografiskt granskad
    3. A revision of Fagonia (Zygophyllaceae)
    Öppna denna publikation i ny flik eller fönster >>A revision of Fagonia (Zygophyllaceae)
    Ingår i: Systematics and BiodiversityArtikel i tidskrift (Refereegranskat) Submitted
    Identifikatorer
    urn:nbn:se:uu:diva-90951 (URN)
    Tillgänglig från: 2003-10-15 Skapad: 2003-10-15Bibliografiskt granskad
    4. Phylogenetic relationships and biogeography of the desert plant genus Fagonia (Zygophyllaceae), inferred by parsimony and Bayesian model averaging
    Öppna denna publikation i ny flik eller fönster >>Phylogenetic relationships and biogeography of the desert plant genus Fagonia (Zygophyllaceae), inferred by parsimony and Bayesian model averaging
    Ingår i: Molecular Phylogenetics and EvolutionArtikel i tidskrift (Refereegranskat) Submitted
    Identifikatorer
    urn:nbn:se:uu:diva-90952 (URN)
    Tillgänglig från: 2003-10-15 Skapad: 2003-10-15Bibliografiskt granskad
  • 6.
    Ekenäs, Catarina
    et al.
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Avdelningen för farmakognosi. Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Rosén, Josefin
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Avdelningen för farmakognosi.
    Wagner, Steffen
    Albert-Ludwigs-Universität, Freiburg, Germany.
    Merfort, Irmgard
    Albert-Ludwigs-Universität, Freiburg, Germany.
    Backlund, Anders
    Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Farmaceutiska fakulteten, Institutionen för läkemedelskemi, Avdelningen för farmakognosi.
    Andreasen, Katarina
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Secondary chemistry and ribosomal DNA data congruencies in Arnica (Asteraceae)2009Ingår i: Cladistics, ISSN 0748-3007, E-ISSN 1096-0031, Vol. 25, nr 1, s. 78-92Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    To investigate possible congruencies between DNA sequence data and secondary chemistry, we compared nuclear ribosomal DNA (nrDNA) sequence data, sesquiterpene lactone (STL) contents, and cytometric data from 35 accessions of 16 Arnica (Asteraceae) species and two outgroup taxa (Layia hieracioides and Madia sativa), using phylogenetic inference and principal component analysis (PCA). Several groups supporting multiple accessions of the same species (of A. montana, A. longifolia, A. gracilis, and A. chamissonis) are congruent between the phylogenetic trees based on nrDNA and STL data. Sesquiterpene lactone profiles were found to be highly consistent within multiple samples of A. montana and A. longifolia respectively. Moreover, sesquiterpene lactone data support subspecies classifications of A. chamissonis and A. parryi, with additional support from DNA sequence data and cytometric data. Morphology, STL data (PCA), cytometric data and DNA sequence data suggest a hybrid origin of one accession (A. gracilis × longifolia). In A. gracilis, A. latifolia, and Layia hieracioides, previously not investigated for STLs, we found large amounts of xanthalongin derivatives. This is the first time STLs have been reported from subtribe Madiinae.

  • 7.
    Erixon, Per
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Svennblad, Bodil
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Matematiska institutionen, Matematisk statistik.
    Britton, Tom
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Matematisk-datavetenskapliga sektionen, Matematiska institutionen, Matematisk statistik.
    Oxelman, Bengt
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Reliability of Bayesian Posterior Probabilities and Bootstrap Frequencies in Phylogenetics2003Ingår i: Systematic Biology, ISSN 1063-5157, E-ISSN 1076-836X, Vol. 52, nr 5, s. 665-673Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Many empirical studies have revealed considerable differences between nonparametric bootstrapping and Bayesian posterior probabilities in terms of the support values for branches, despite claimed predictions about their approximate equivalence. We investigated this problem by simulating data, which were then analyzed by maximum likelihood bootstrapping and Bayesian phylogenetic analysis using identical models and reoptimization of parameter values. We show that Bayesian posterior probabilities are significantly higher than corresponding nonparametric bootstrap frequencies for true clades, but also that erroneous conclusions will be made more often. These errors are strongly accentuated when the models used for analyses are underparameterized. When data are analyzed under the correct model, nonparametric bootstrapping is conservative. Bayesian posterior probabilities are also conservative in this respect, but less so.

  • 8.
    Kårehed, J
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Alseuosmiaceae. To be published in Families and Genera of Vascular Plants, eds. K. Kubitzki et al.Artikel i tidskrift (Refereegranskat)
  • 9.
    Kårehed, J
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Argophyllaceae. To be published in Families and Genera of Vascular Plants, eds. K. Kubitzki et alArtikel i tidskrift (Refereegranskat)
  • 10.
    Kårehed, J
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Multiple origin of the tropical forest tree family Icacinaceae2001Ingår i: American Journal of Botany, Vol. 88, nr 12, s. 2259-2274Artikel i tidskrift (Refereegranskat)
  • 11.
    Kårehed, J
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Not just hollies – the expansion of AquifolialesManuskript (Övrigt vetenskapligt)
  • 12.
    Kårehed, Jesper
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Evolutionary Studies in Asterids Emphasising Euasterids II2002Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    This thesis deals with evolutionary relationships within the asterids, a group of plants comprising about one-third of all flowering plants.

    Two new families are recognised: Pennantiaceae and Stemonuraceae. The woody Pennantia from New Zealand and Australia is the sole genus of Pennantiaceae. Stemonuraceae consist of a dozen woody genera with a pantropical distribution and a centre of diversity in South East Asia and the Malesian islands. They are characterised by long hairs on their stamens and/or fleshy appendages on their fruits. Both families were formerly included in Icacinaceae. While Pennantiaceae are unrelated to any of the former Icacinaceae and placed in the order Apiales, other former Icacinaceae genera are related to Cardiopteris, a twining herb from South East Asia and Malesia. The monogeneric family Cardiopteridaceae is enlarged as to include also these. Cardiopteridaceae and Stemonuraceae are sister groups and placed in Aquifoliales. The three other families of Aquifoliales are monogeneric and closely related. The Asian Helwingiaceae and the Central/South American Phyllonomaceae are suggested to be merged into Aquifoliaceae (hollies). The genera of Icacinaceae in the traditional sense not placed in any of the above families (all euasterids II) are members of early diverging lineages of the euasterids I and possibly included in the order Garryales.

    The three woody Australasian families Alseuosmiaceae, Argophyllaceae, and Phellinaceae are confirmed as members of Asterales, despite traditional placements not close to that order. They are, moreover, supported as each other’s closest relatives.

    The results are based mainly on parsimony analysis of DNA sequence data, but morphological studies have revealed characters in support for the molecularly based conclusions. The gene that has provided most new information is the chloroplast ndhF gene. The results are, however, drawn from combined analyses of sequences from one or several additional genes (atpB, matK, rbcL, 18S rDNA). The data have also been explored with Bayesian analysis, a statistical, model-based method that most recently has been developed for phylogeny reconstruction.

    Delarbeten
    1. Evolution of the Australasian families Alseuosmiaceae, Argophyllaceae, and Phellinaceae
    Öppna denna publikation i ny flik eller fönster >>Evolution of the Australasian families Alseuosmiaceae, Argophyllaceae, and Phellinaceae
    1999 (Engelska)Ingår i: Systematic Botany, ISSN 0363-6445, E-ISSN 1548-2324, Vol. 24, nr 4, s. 660-682Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    Based on results from cladistic analyses of morphology and DNA sequences (the two chloroplast genes rbcL and ndhF), the three Australasian families Alseuosmiaceae, Argophyllaceae, and Phellinaceae are each monophyletic, belong within Asterales, and together form a monophyletic group. Two new rbcL sequences and thirteen new ndhF sequences were obtained. Congruence tests did not reveal any significant incongruence between the two molecular data sets or between the molecular and morphological data. The character evolution of the Alseuosmiaceae-Argophyllaceae-Phellinaceae group is discussed. The Australasian ancestor of this group was probably a woody plant with simple, alternate, serrate leaves and regular, choripetalous, epigynous flowers borne in panicles. All tree families should be retained in line with the "principle of ease of identification."

    Nationell ämneskategori
    Naturvetenskap
    Identifikatorer
    urn:nbn:se:uu:diva-90032 (URN)
    Tillgänglig från: 2002-10-24 Skapad: 2002-10-24 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
    2. Alseuosmiaceae. To be published in Families and Genera of Vascular Plants, eds. K. Kubitzki et al.
    Öppna denna publikation i ny flik eller fönster >>Alseuosmiaceae. To be published in Families and Genera of Vascular Plants, eds. K. Kubitzki et al.
    Artikel i tidskrift (Refereegranskat) Accepted
    Identifikatorer
    urn:nbn:se:uu:diva-90033 (URN)
    Tillgänglig från: 2002-10-24 Skapad: 2002-10-24Bibliografiskt granskad
    3. Argophyllaceae. To be published in Families and Genera of Vascular Plants, eds. K. Kubitzki et al
    Öppna denna publikation i ny flik eller fönster >>Argophyllaceae. To be published in Families and Genera of Vascular Plants, eds. K. Kubitzki et al
    Artikel i tidskrift (Refereegranskat) Accepted
    Identifikatorer
    urn:nbn:se:uu:diva-90034 (URN)
    Tillgänglig från: 2002-10-24 Skapad: 2002-10-24Bibliografiskt granskad
    4. Multiple origin of the tropical forest tree family Icacinaceae
    Öppna denna publikation i ny flik eller fönster >>Multiple origin of the tropical forest tree family Icacinaceae
    2001 Ingår i: American Journal of Botany, Vol. 88, nr 12, s. 2259-2274Artikel i tidskrift (Refereegranskat) Published
    Identifikatorer
    urn:nbn:se:uu:diva-90035 (URN)
    Tillgänglig från: 2002-10-24 Skapad: 2002-10-24Bibliografiskt granskad
    5. Not just hollies – the expansion of Aquifoliales
    Öppna denna publikation i ny flik eller fönster >>Not just hollies – the expansion of Aquifoliales
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-90036 (URN)
    Tillgänglig från: 2002-10-24 Skapad: 2002-10-24 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
    6. The family Pennantiaceae and its relationships to Apiales
    Öppna denna publikation i ny flik eller fönster >>The family Pennantiaceae and its relationships to Apiales
    2003 (Engelska)Ingår i: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 141, nr 1, s. 1-24Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    The early evolution of the flowering plant order Apiales is discussed based on information from morphology and DNAsequences from four genes (ndhF,rbcL,atpBandmatK). A model-based approach of analysis, Bayesian inference, isused to analyse the data and the results are compared with those from parsimony analysis. In particular, a new familyof the order, the monogeneric Pennantiaceae from New Zealand and Australia, aids in the understanding of howthe order originated. The ancestor of Apiales was probably a shrub or small tree with alternate, simple leaves, paniculateinflorescences, five-merous flowers with free petals, and drupes.

    Nationell ämneskategori
    Naturvetenskap
    Identifikatorer
    urn:nbn:se:uu:diva-90037 (URN)10.1046/j.1095-8339.2003.00110.x (DOI)
    Tillgänglig från: 2002-10-24 Skapad: 2002-10-24 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
  • 13.
    Kårehed, Jesper
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    The family Pennantiaceae and its relationships to Apiales2003Ingår i: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 141, nr 1, s. 1-24Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The early evolution of the flowering plant order Apiales is discussed based on information from morphology and DNAsequences from four genes (ndhF,rbcL,atpBandmatK). A model-based approach of analysis, Bayesian inference, isused to analyse the data and the results are compared with those from parsimony analysis. In particular, a new familyof the order, the monogeneric Pennantiaceae from New Zealand and Australia, aids in the understanding of howthe order originated. The ancestor of Apiales was probably a shrub or small tree with alternate, simple leaves, paniculateinflorescences, five-merous flowers with free petals, and drupes.

  • 14.
    Kårehed, Jesper
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Lundberg, Johannes
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Bremer, Birgitta
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Bremer, Kåre
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Evolution of the Australasian families Alseuosmiaceae, Argophyllaceae, and Phellinaceae1999Ingår i: Systematic Botany, ISSN 0363-6445, E-ISSN 1548-2324, Vol. 24, nr 4, s. 660-682Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Based on results from cladistic analyses of morphology and DNA sequences (the two chloroplast genes rbcL and ndhF), the three Australasian families Alseuosmiaceae, Argophyllaceae, and Phellinaceae are each monophyletic, belong within Asterales, and together form a monophyletic group. Two new rbcL sequences and thirteen new ndhF sequences were obtained. Congruence tests did not reveal any significant incongruence between the two molecular data sets or between the molecular and morphological data. The character evolution of the Alseuosmiaceae-Argophyllaceae-Phellinaceae group is discussed. The Australasian ancestor of this group was probably a woody plant with simple, alternate, serrate leaves and regular, choripetalous, epigynous flowers borne in panicles. All tree families should be retained in line with the "principle of ease of identification."

  • 15.
    Lantz, Henrik
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Andreasen, Katarina
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för organismbiologi, Systematisk biologi.
    Bremer, Birgitta
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Nuclear rDNA ITS sequence data used to construct the first phylogeny of Vanguerieae (Rubiaceae)2002Ingår i: Plant Systematics and Evolution, ISSN 0378-2697, nr 230, s. 173-187Artikel i tidskrift (Refereegranskat)
  • 16.
    Lundberg, Johannes
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Phylogenetic Studies in the Euasterids II: with Particular Reference to Asterales and Escalloniaceae2001Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    The present study is concerned with the evolutionary relationships among the Euasterids II, a group of angiosperms that includes the orders Apiales, Aquifoliales, Asterales, and Dipsacales together with several small, poorly known families yet unplaced as to order.

    Parsimony analysis of nucleotide sequence data from the chloroplast genes atpB, ndhF and rbcL together with morphological data are used to construct a phylogeny of the order Asterals, which in the present sense includes 11 families and more than 26 000 species. It is argued that Rousseaceae should be expanded to include also Carpodetaceae (and thus contain four genera), and that Donatia should be re-merged with Stylidiaceae. The present study also strongly supports that the sister taxon to the largest plant family, Asteraceae (Compositae), is the small South American Calyceraceae. A new addition to Asterales is Platyspermation (formerly in Escalloniaceae).

    Using the recently developed Bayesian approach to phylogenetic reconstruction, in combination with a dataset consisting of the atpB, ndhF and rbcL nucleotide sequences, a resolved and fairly well supported phylogeny of the Euasterids II could be reconstructed. Based on this analysis, and furthermore supported by morphological characters, the South Hemispheric family Escalloniaceae is recircumscribed to include the monogeneric families Eremosynaceae, Tribelaceae and Polyosmaceae, and in this new circumscription it includes seven genera. The formerly escalloniacean member Quintinia, together with the monogeneric families Paracryphiaceae and Sphenostemonaceae, is argued to consitute a monophyletic family Paracryphiaceae sensu lato, supported by several morphological characters.

  • 17.
    Långström, Elisabeth
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Systematics of Echiochilon and Ogastemma (Boraginaceae), and the Phylogeny of Boraginoideae2002Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    Echiochilon, Ogastemma and Sericostoma are revised resulting in the recognition of 15 species of Echiochilon and one Ogastemma species. Several species are placed in synonymy and three new species are described, E. baricum, E. callianthum and E. cyananthum. The single species of Sericostoma is shown to be nested within Echiochilon.

    The plastid atpB gene was sequenced for Echiochilon and Ogastemma from the Old World and Antiphytum from the New World, plus for a selection of 33 other Boraginaceae taxa. They were analysed together with selected outgroup taxa to give a framework of the tribes of Boraginoideae. The analysis gave support for establishing the new tribe Echiochileae for Antiphytum, Echiochilon and Ogastemma, and for merging the traditionally accepted tribe Eritrichieae with Cynoglosseae. The ITS region was sequenced for all but one species of Echiochilon and for representatives of Antiphytum and Ogastemma. Phylogenetic analysis of Echiochilon revealed that the strongly zygomorphic-flowered species form a paraphyletic group. The morphological data gave results fairly congruent with the ITS phylogeny.

    Biogeographic interpretations of the ITS and atpB phylogenies indicated a trans-Atlantic dispersal of Antiphytum as the most plausible explanation to the Old/New World disjunction. Analyses using DIVA (Dispersal Vicariance Analysis) of the distributions of the Echiochilon species indicated an ancestor to Echiochilon with a wide distribution over northern Africa and Arabia to India.

    Delarbeten
    1. Revision of the three Boraginaceae genera Echiochilon, Ogastemma and Sericostoma
    Öppna denna publikation i ny flik eller fönster >>Revision of the three Boraginaceae genera Echiochilon, Ogastemma and Sericostoma
    1999 (Engelska)Ingår i: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 130, nr 3, s. 185-259Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    The Afro-Asiatic genus Echiochilon Desf. (Boraginaceae) is revised and 14 species are recognized. The two monotypic genera Ogastemma Brummitt and Sericostoma Stocks ex Wight (Boraginaceae), earlier suggested to be close relatives of Echiochilon, are also revised to evaluate their distinction from the genus Echiochilon. There is no support for including any of the two monotypic genera in Echiochilon. Morphological aspects of the three genera are discussed. Three new species are described: E. baricutn Lonn sp. nov. and E. cyananthum Lönn sp. nov. from northern Somalia, and E. callianthum Lonn sp. nov. from Arabia. A key, descriptions, pictures and distribution maps are provided for all species of Echiochilon, and descriptions and distribution maps are provided also for Ogastemma and Sericostoma. Several lectotypes are selected and several names arc placed in synonymy.

    Nationell ämneskategori
    Biologiska vetenskaper
    Identifikatorer
    urn:nbn:se:uu:diva-89725 (URN)10.1111/j.1095-8339.1999.tb00521.x (DOI)
    Tillgänglig från: 2002-03-20 Skapad: 2002-03-20 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
    2. Tribes of Boraginoideae (Boraginaceae) and placement of Antiphytum , Echiochilon , Ogastemma and Sericostoma: A phylogenetic analysis based on atp B plastid DNA sequence data
    Öppna denna publikation i ny flik eller fönster >>Tribes of Boraginoideae (Boraginaceae) and placement of Antiphytum , Echiochilon , Ogastemma and Sericostoma: A phylogenetic analysis based on atp B plastid DNA sequence data
    2002 (Engelska)Ingår i: Plant Systematics and Evolution, ISSN 0378-2697, E-ISSN 1615-6110, Vol. 234, nr 1-4, s. 137-153Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    The genera Antiphytum, Echiochilon, Ogastemma and Sericostoma, which have been difficult to place within the tribes of the subfamily Boraginoideae (Boraginaceae), are analysed using plastid atpB sequence data. A selection of Boraginaceae genera was used to obtain a framework for the phylogenetic position of Antiphytum, Echiochilon, Ogastemma and Sericostoma. Sericostoma is found to belong within Echiochilon. The new tribe Echiochileae, Boragineae and Lithospermeae are monophyletic but the tribes Eritrichieae and Cynoglosseae are paraphyletic. The biogeography of Echiochileae (Echiochilon and Ogastemma from Africa and western Asia, and Antiphytum from America) is discussed. 

    Nyckelord
    Antiphytum, Echiochilon, Ogastemma, Sericostoma, Boraginaceae, Echiochileae phylo- geny, atpB, tribes, biogeography
    Nationell ämneskategori
    Botanik
    Identifikatorer
    urn:nbn:se:uu:diva-89726 (URN)10.1007/s00606-002-0195-z (DOI)
    Tillgänglig från: 2002-03-20 Skapad: 2002-03-20 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
    3. Phylogeny of Echiochilon (Echiochileae, Boraginaceae) Based on ITS Sequences and Morphology
    Öppna denna publikation i ny flik eller fönster >>Phylogeny of Echiochilon (Echiochileae, Boraginaceae) Based on ITS Sequences and Morphology
    2003 (Engelska)Ingår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 52, nr 4, s. 725-735Artikel i tidskrift (Refereegranskat) Published
    Nationell ämneskategori
    Biologiska vetenskaper
    Identifikatorer
    urn:nbn:se:uu:diva-89727 (URN)
    Tillgänglig från: 2002-03-20 Skapad: 2002-03-20 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
  • 18.
    Långström, Elisabeth
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Chase, M. W.
    Tribes of Boraginoideae (Boraginaceae) and placement of Antiphytum , Echiochilon , Ogastemma and Sericostoma: A phylogenetic analysis based on atp B plastid DNA sequence data2002Ingår i: Plant Systematics and Evolution, ISSN 0378-2697, E-ISSN 1615-6110, Vol. 234, nr 1-4, s. 137-153Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The genera Antiphytum, Echiochilon, Ogastemma and Sericostoma, which have been difficult to place within the tribes of the subfamily Boraginoideae (Boraginaceae), are analysed using plastid atpB sequence data. A selection of Boraginaceae genera was used to obtain a framework for the phylogenetic position of Antiphytum, Echiochilon, Ogastemma and Sericostoma. Sericostoma is found to belong within Echiochilon. The new tribe Echiochileae, Boragineae and Lithospermeae are monophyletic but the tribes Eritrichieae and Cynoglosseae are paraphyletic. The biogeography of Echiochileae (Echiochilon and Ogastemma from Africa and western Asia, and Antiphytum from America) is discussed. 

  • 19.
    Långström, Elisabeth
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Oxelman, Bengt
    Phylogeny of Echiochilon (Echiochileae, Boraginaceae) Based on ITS Sequences and Morphology2003Ingår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 52, nr 4, s. 725-735Artikel i tidskrift (Refereegranskat)
  • 20.
    Lönn, Elisabeth
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Revision of the three Boraginaceae genera Echiochilon, Ogastemma and Sericostoma1999Ingår i: Botanical journal of the Linnean Society, ISSN 0024-4074, E-ISSN 1095-8339, Vol. 130, nr 3, s. 185-259Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The Afro-Asiatic genus Echiochilon Desf. (Boraginaceae) is revised and 14 species are recognized. The two monotypic genera Ogastemma Brummitt and Sericostoma Stocks ex Wight (Boraginaceae), earlier suggested to be close relatives of Echiochilon, are also revised to evaluate their distinction from the genus Echiochilon. There is no support for including any of the two monotypic genera in Echiochilon. Morphological aspects of the three genera are discussed. Three new species are described: E. baricutn Lonn sp. nov. and E. cyananthum Lönn sp. nov. from northern Somalia, and E. callianthum Lonn sp. nov. from Arabia. A key, descriptions, pictures and distribution maps are provided for all species of Echiochilon, and descriptions and distribution maps are provided also for Ogastemma and Sericostoma. Several lectotypes are selected and several names arc placed in synonymy.

  • 21.
    Oh, Il-Chan
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Schönenberger, Jürg
    Department of Botany, Stockholm University, Lilla Frescativägen 5, SE-106 91 Stockholm, Sweden.
    Motley, Timothy J.
    Department of Biological Sciences, 110 Mills Godwin Building/45th Street, Old Dominion University, Norfolk, Virginia 23529-0266 U.S.A..
    Myrenås, Mattias
    Laboratory for Molecular Systematics, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden.
    Anderberg, Arne A.
    Department of Phanerogamic Botany, Swedish Museum of Natural History, P.O. Box 50007, SE-104 05 Stockholm, Sweden.
    Phylogenetic relationships among endemic Hawaiian Lysimachia (Myrsinaceae): insights from nuclear and chloroplast DNA sequence data2013Ingår i: Pacific Science, ISSN 0030-8870, E-ISSN 1534-6188, Vol. 67, nr 7, s. 237-251Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The 16 endemic Hawaiian species of Lysimachia form a monophyletic group referred to as subgenus Lysimachiopsis (Marr and Bohm 1997). The group has radiated into various habitats and most species are endemic to a single island. Previous taxonomic treatments have revealed problems, particularly within the L. hillebrandii/L. remyi complex. We conducted phylogenetic analyses including 12 species of the subgenus Lysimachiopsis using nuclear ribosomal DNA (ETS, ITS) and chloroplast DNA (rpl16, rpl20-rps12, rps16, trnH-psbA, trnS-G) sequences in order to reconstruct phylogenetic relationships. A combined analysis using all sequence data supports three major clades and provides new insights into the evolutionary history of the group, especially within the problematic L. hillebrandii/L. remyi complex. The resulting molecular phylogeny provides support for the following clades: (1) L. hillebrandii and L. waianaeensis, (2) L. remyi ssp. remyi, L. maxima, and L. remyi ssp. subherbacea, (3) L. remyi ssp. caliginis and L. remyi ssp. kipahuluensis, and (4) L. glutinosa, L. scopulensis, and L. kalalauensis. The phylogenetic pattern is largely congruent with the biogeographical distribution of the species in the Hawaiian Islands. Our results also indicate that earlier taxonomic treatments of the group need to be partially revised in order to reflect phylogenetic relationships.

  • 22.
    Popp, Magnus
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Erixon, Per
    Eggens, Frida
    Oxelman, Bengt
    Origin and evolution of a circumpolar polyploid species complex in Silene (Caryophyllaceae)Manuskript (Övrigt vetenskapligt)
  • 23.
    Popp, Magnus
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Oxelman, Bengt
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Evolution of a RNA polymerase gene family in Silene (Caryophyllaceae) - incomplete concerted evolution and topological congruence among paralogues2004Ingår i: Systematic Biology, ISSN 1063-5157, E-ISSN 1076-836X, Vol. 53, nr 6, s. 914-932Artikel i tidskrift (Refereegranskat)
    Abstract [sv]

    Four low-copy nuclear DNA intron regions from the second largest subunits of the RNA polymerase gene family (RPA2, RPB2, RPD2a, and RPD2b), the internal transcribed spacers (ITSs) from the nuclear ribosomal regions, and the rps16 intron from the chloroplast were sequenced and used in a phylogenetic analysis of 29 species from the tribe Sileneae (Caryophyllaceae). We used a low stringency nested polymerase chain reaction (PCR) approach to overcome the difficulties of constructing specific primers for amplification of the low copy nuclear DNA regions. Maximum parsimony analyses resulted in largely congruent phylogenetic trees for all regions. We tested overall model congruence in a likelihood context using the software PLATO and found that ITSs, RPA2, and RPB2 deviated from the maximum likelihood model for the combined data. The topology parameter was then isolated and topological congruence assessed by nonparametric bootstrapping. No strong topological incongruence was found. The analysis of the combined data sets resolves previously poorly known major relationships within Sileneae. Two paralogues of RPD2 were found, and several independent losses and incomplete concerted evolution were inferred. The among-site rate variation was significantly lower in the RNA polymerase introns than in the rps16 intron and ITSs, a property that is attractive in phylogenetic analyses.

  • 24.
    Popp, Magnus
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Oxelman, Bengt
    Inferring the history of the polyploid Silene aegaea (Caryophyllaceae) using plastid and homoeologous nuclear DNA sequences2001Ingår i: Molecular Phylogenetics and Evolution, ISSN 1055-7903, Vol. 20, nr 3, s. 474-481Artikel i tidskrift (Refereegranskat)
  • 25. Remberg, P
    et al.
    Björk, Lars
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Hedner, T
    Sterner, Olov
    Characteristics, clinical effect profile and tolerability of a nasal spray preparation of Artemisia abrotanum L. for allergic rhinitis2004Ingår i: Phytomedicine, ISSN 0944-7113, E-ISSN 1618-095X, Vol. 11, nr 1, s. 36-42Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A nasal spray formulation containing an extract of Artemisia abrotanum L. was developed for therapeutic use in patients with allergic rhinitis and other upper airway disorders. The nasal spray preparation used contains a mixture of essential oils (4 mg/ml) and flavonols (2.5 microg/ml), of which some components have been shown to possess antiinflammatory, expectorant, spasmolytic as well as antiseptic and antimicrobial activities. The most important constituents in the essential oil fraction of the preparation are 1,8-cineole, linalool and davanone, while the flavonol fraction contains centauredin, casticin and quercetin dimethyl-ethers. No trace of thujon was observed in the essential oil of the Artemisia abrotanum L. genotype "Tycho" used for the manufacture of the nasal spray preparation. In 12 patients with diagnoses of allergic rhinitis, allergic conjunctivitis and/or bronchial obstructive disease, the nasal spray was given immediately after the appearance of characteristic allergic nasal symptoms. In 10 of the 12 patients, allergic rhinitis with nasal congestion, sneezing and rhinorrhea was dominant. After administration of the nasal spray, all patients experienced a rapid and significant symptom relief of nasal symptoms, comparable to the effect of antihistamine and chromoglicate preparations which several of the patients had used previously. The effect was present within 5 minutes after the administration and lasted for several hours. In 7 of the 10 rhinitis patients with concomitant symptoms of allergic conjunctivitis, a significant subjective relief of eye symptoms was also experienced. In 3 of the 6 patients who had a history of characteristic symptoms of endogenous, exogenous or exercise induced bronchial obstructive disease, there was a bronchial symptom relief by the nasal spray preparation which was experienced as rapid and clinically significant. It is concluded from the present proof of concept study, that a nasal spray formulation containing an extract characterised by a mixture of essential oils and flavonols from the Artemisia abrotanum L. genotype "Tycho", appears to be clinically useful and suitable for the prophylactic and therapeutic management of patients with allergic rhinitis and adjuvant symptoms

  • 26.
    Tibell, Leif
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Tholurna dissimilis and generic delimitations in Caliciaceae inferred from nuclear ITS and LSU rDNA phylogenies (Lecanorales, lichenized ascomycetes)2003Ingår i: Mycological Research, ISSN 0953-7562, E-ISSN 1469-8102, Vol. 107, nr 12, s. 1403-1418Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The phylogenetic relationships of Tholurna dissimilis were investigated in relation to a phylogeny of twenty-three species in Caliciaceae and eighteen species from Physciaceae. ITS and LSU regions of the nuclear ribosomal DNA were used for the reconstruction of phylogenies by maximum parsimony methods. Calicium adaequatum was shown to be the closest relative of and possibly congeneric with Tholurna. Calicium is thus not monophyletic unless Tholurna is included. Calicium in the molecular phylogeny contains several distinct clades, which to some extent can be characterized morphologically. Cyphelium in a traditional sense is probably not monophyletic. Cyphelium s. str. has immersed apothecia, large smooth spores and a very thin excipulum throughout. C. inquinans and C. karelicum, which form a distinct and highly supported clade, may be accommodated in Acolium, possibly along with other Cyphelium and Calicium species. The phylogenies presented here do not support the recognition of neither Physciaceae nor Caliciaceae in a narrow sense, but they also do not exclude this. Numerous spliceosomal and unclassified insertions were found in the LSU sequences. They to some extent offered phylogenetic information both with respect to location and by their sequence similarities.

  • 27.
    Tibell, Leif
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Tholurna dissimilis and generic delimitations in Caliciaceae inferred from nuclear ITS and LSU rDNA phylogenies (Lecanorales, lichenized ascomycetes)2003Ingår i: Mycological Research, ISSN 0953-7562, E-ISSN 1469-8102, Vol. 107, nr 12, s. 1403-1418Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    The phylogenetic relationships of Tholurna dissimilis were investigated in relation to a phylogeny of twenty-three species in Caliciaceae and eighteen species fromPhysciaceae. ITS and LSU regions of the nuclear ribosomal DNA were used for the reconstruction of phylogenies by maximum parsimony methods. Calicium adaequatumwas shown to be the closest relative of and possibly congeneric with Tholurna. Caliciumis thus not monophyletic unless Tholurna is included. Calicium in the molecular phylogeny contains several distinct clades, which to some extent can be characterized morphologically. Cyphelium in a traditional sense is probably not monophyletic.Cyphelium s. str. has immersed apothecia, large smooth spores and a very thin excipulum throughout. C. inquinans and C. karelicum, which form a distinct and highly supported clade, may be accommodated in Acolium, possibly along with otherCyphelium and Calicium species. The phylogenies presented here do not support the recognition of neither Physciaceae nor Caliciaceae in a narrow sense, but they also do not exclude this. Numerous spliceosomal and unclassified insertions were found in the LSU sequences. They to some extent offered phylogenetic information both with respect to location and by their sequence similarities.

  • 28.
    Tibell, Leif
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Koffman, Anna
    Chaenotheca nitidula, a New Species of Calicioid Lichen from North America2002Ingår i: The Bryologist, ISSN 0007-2745, E-ISSN 1938-4378, Vol. 105, nr 3, s. 353-357Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    Chaenotheca nitidula is described as a new species from northeastern North America. It is characterized by long, shining stalks; rather small, spheric, non-pruinose capitul; immersed thallus; and its association with Stichococcus as photobiont. In a phylogenetic analysis based on rDNA ITS1-5.8S-ITS2 sequences, C. nitidula was most closely related to Chaenotheca gracilenta and C. gracillima. It occurs on wood of conifers in old woodlands and has so far been recorded from Maine and New Brunswick.

  • 29.
    Tibell, Leif
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Thor, Göran
    Calicioid lichens and fungi of Japan2003Ingår i: Journal of the Hattori Botanical Laboratory, ISSN 0073-0912, Vol. 94, s. 205-259Artikel i tidskrift (Refereegranskat)
  • 30.
    Tibell, Leif
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Titov, Alexander
    Lisická, Eva
    Calicioid lichens and fungi described by J. Nádvorník.2003Ingår i: Mycotaxon, ISSN 0093-4666, E-ISSN 2154-8889, Vol. 87, nr 1, s. 3-24Artikel i tidskrift (Refereegranskat)
    Abstract [en]

    A revision of 53 taxon names of calicioid lichens and fungi described by J. Nádvorník and 3 taxon names by M. Servít & J. Nádvorník is presented. For the following taxa lectotypes have been designated: Calicium adspersum f. nuda, Calicium consociatum, Calicium cretzoiui, Calicium quercinum f. nuda, Calicium quercinum f. subcrustosa, Calicium salicinum var. arenarium, Calicium viridireagens, Chaenotheca dilatata, Chaenothecopsis gracilis, Coniocybe farinacea f. minima, Cyphelium brachysporum, Cyphelium inquinans f. ecrustacea, Mycocalicium rappii. One new combination, Chaenothecopsis rappii, is proposed.

  • 31.
    Vinnersten, Annika
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Tracing History: Phylogenetic, Taxonomic, and Biogeographic Research in the Colchicum Family2003Doktorsavhandling, sammanläggning (Övrigt vetenskapligt)
    Abstract [en]

    This thesis concerns the history and the intrafamilial delimitations of the plant family Colchicaceae. A phylogeny of 73 taxa representing all genera of Colchicaceae, except the monotypic Kuntheria, is presented. The molecular analysis based on three plastid regions—the rps16 intron, the atpB-rbcL intergenic spacer, and the trnL-F region—reveal the intrafamilial classification to be in need of revision. The two tribes Iphigenieae and Uvularieae are demon-strated to be paraphyletic. The well-known genus Colchicum is shown to be nested within Androcymbium, Onixotis constitutes a grade between Neodregea and Wurmbea, and Gloriosa is intermixed with species of Littonia. Two new tribes are described, Burchardieae and Tripladenieae, and the two tribes Colchiceae and Uvularieae are emended, leaving four tribes in the family. At generic level new combinations are made in Wurmbea and Gloriosa in order to render them monophyletic. The genus Androcymbium is paraphyletic in relation to Colchicum and the latter genus is therefore expanded. An investigation of the distribution of colchicine within the expanded Colchicaceae is conducted to evaluate the potential of colchicine as a synapomorphy of the re-circumscribed family. The results demonstrate presence of colchicine in all genera previously not examined in Colchicaceae and in the genus Burchardia, earlier reported to lack colchicine. Hence, demonstrating colchicine to be a synapomorphy for the family. An attempt to date the phylogeny of the order Liliales together with a dispersal-vicariance (DIVA) analysis indicates that the split between Colchicaceae and Alstromeriaceae-Luzuriagaceae represents a vicariance event following the disintegration of the Australian-Antarctican-South American link, ~34 million years ago. Further, the DIVA analysis indicates that Colchicaceae originated in Australia, first reached Asia and North America, and later Africa, from where they expanded to Europe and also dispersed back to Australia.

    Delarbeten
    1. Age and biogeography of major clades in Liliales
    Öppna denna publikation i ny flik eller fönster >>Age and biogeography of major clades in Liliales
    2001 Ingår i: American Journal of Botany, Vol. 88, nr 9, s. 1695-1703Artikel i tidskrift (Refereegranskat) Published
    Identifikatorer
    urn:nbn:se:uu:diva-91111 (URN)
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21Bibliografiskt granskad
    2. Phylogenetic relationships within Colchicaceae
    Öppna denna publikation i ny flik eller fönster >>Phylogenetic relationships within Colchicaceae
    2003 Ingår i: American Journal of Botany, Vol. 90, nr 10, s. 1455-1462Artikel i tidskrift (Refereegranskat) Published
    Identifikatorer
    urn:nbn:se:uu:diva-91112 (URN)
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21Bibliografiskt granskad
    3. A new classification of Colchicaceae
    Öppna denna publikation i ny flik eller fönster >>A new classification of Colchicaceae
    2007 (Engelska)Ingår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 56, nr 1, s. 171-178Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    A recent molecular study of Colchicaceae showed four of the 19 genera and two of the five tribes to be paraphyletic. The genus Colchicum is nested within Androcymbium, Onixotis constitutes a grade between Neodregea and Wurmbea, Gloriosa is intermixed with species of Littonia, and Burchardia forms a grade sister to the rest of the family. The current classification of Colchicaceae is discussed and a revised classification is presented, based on the primary principle of monophyly. The recognition of subfamily Wurmbaeoideae for the cormous genera results in a paraphyletic Uvularioideae unless a further two or three subfamilies are recognized among the rhizomatous members of the family. This is not justified in such a small family. A revised tribal taxonomy is presented, recognizing six morphologically diagnosable, monophyletic clades at tribal level. The tribes were defined to maximize nomenclatural and taxonomic stability. Three emended tribes, Anguillarieae, Colchiceae and Iphigenieae, are recognized in the wurmbaeoid clade. The uvularioid grade is divided into Uvularicae and two new tribes, Burchardieae and Tripladenieae. The genus Burchardia is probably paraphyletic and further tribes may be required to accommodate segregates pending analysis of all species in the genus. The genera Neodregea and Onixotis are included within a widened circumscription of Wurmbea, defined by an ebracteate, spiciform inflorescence and three leaves. The genus Littonia is included within an expanded Gloriosa, distinguished by a stoloniferous corm, opposite or verticillate lower leaves, yellow to orange flowers, and more or less fleshy seeds. The necessary new combinations in these two genera are provided.

    Nationell ämneskategori
    Biologiska vetenskaper
    Identifikatorer
    urn:nbn:se:uu:diva-91113 (URN)000244825300019 ()
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
    4. The genus Colchicum L. redefined to include Androcymbium Willd. based on molecular evidence
    Öppna denna publikation i ny flik eller fönster >>The genus Colchicum L. redefined to include Androcymbium Willd. based on molecular evidence
    2007 (Engelska)Ingår i: Taxon, ISSN 0040-0262, E-ISSN 1996-8175, Vol. 56, nr 3, s. 872-882Artikel i tidskrift (Refereegranskat) Published
    Abstract [en]

    A recent molecular analysis of the Colchicaceae has revealed that the genus Androcymbium is paraphyletic in relation to Colchicum and that the genus Merendera is polyphyletic. The implications of these results on the monophyly of the genera in this alliance are discussed. Two independent lineages within the paraphyletic Androcymbium are characterised by enlarged and brightly or contrastingly coloured bracts, which conceal the flowers. The tepals in these species are always cucullate. In the remaining lineages the flowers are more prominent and the tepals are mostly flat. No morphological characters can be identified that serve to diagnose the lineages in Androcymbium that are retrieved by the molecular analysis, and the only practical option is to include all species of Androcymbium within an expanded circumscription of Colchicum. The genus Colchicum in this expanded sense is defined by its short-stemmed or acaulescent habit, androecial nectaries, and 2-4-porate pollen. The necessary synonomy and new combinations are made.

    Nyckelord
    Androcymbium, Colchicum, Mediterranean, South Africa, Taxonomy
    Nationell ämneskategori
    Biologiska vetenskaper
    Identifikatorer
    urn:nbn:se:uu:diva-91114 (URN)000249247400022 ()
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21 Senast uppdaterad: 2017-12-14Bibliografiskt granskad
    5. Historical biogeography of Colchicaceae inferred from dispersal-vicariance analysis
    Öppna denna publikation i ny flik eller fönster >>Historical biogeography of Colchicaceae inferred from dispersal-vicariance analysis
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-91115 (URN)
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
    6. Colchicine distribution in Colchicaceae investigated by mass spectrometry
    Öppna denna publikation i ny flik eller fönster >>Colchicine distribution in Colchicaceae investigated by mass spectrometry
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-91116 (URN)
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
    7. A note on Iphigenia novae-zelandiae (Colchicaceae)
    Öppna denna publikation i ny flik eller fönster >>A note on Iphigenia novae-zelandiae (Colchicaceae)
    Manuskript (Övrigt vetenskapligt)
    Identifikatorer
    urn:nbn:se:uu:diva-91117 (URN)
    Tillgänglig från: 2003-11-21 Skapad: 2003-11-21 Senast uppdaterad: 2010-01-13Bibliografiskt granskad
  • 32.
    Vinnersten, Annika
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Bremer, Kåre
    Age and biogeography of major clades in Liliales2001Ingår i: American Journal of Botany, Vol. 88, nr 9, s. 1695-1703Artikel i tidskrift (Refereegranskat)
  • 33.
    Vinnersten, Annika
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Bremer, Kåre
    Historical biogeography of Colchicaceae inferred from dispersal-vicariance analysisManuskript (Övrigt vetenskapligt)
  • 34.
    Vinnersten, Annika
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Larsson, Sonny
    Colchicine distribution in Colchicaceae investigated by mass spectrometryManuskript (Övrigt vetenskapligt)
  • 35.
    Vinnersten, Annika
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Macfarlane, Terry D.
    Case, Andrea L.
    A note on Iphigenia novae-zelandiae (Colchicaceae)Manuskript (Övrigt vetenskapligt)
  • 36.
    Vinnersten, Annika
    et al.
    Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Teknisk-naturvetenskapliga fakulteten, Biologiska sektionen, Institutionen för evolutionsbiologi, Systematisk botanik.
    Reeves, Gail
    Phylogenetic relationships within Colchicaceae2003Ingår i: American Journal of Botany, Vol. 90, nr 10, s. 1455-1462Artikel i tidskrift (Refereegranskat)
1 - 36 av 36
Referera