C Lexer

Summary

Affiliation: Royal Botanic Gardens
Country: UK

Publications

  1. ncbi request reprint Contact zones: natural labs for studying evolutionary transitions
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Curr Biol 16:R407-9. 2006
  2. ncbi request reprint Admixture in European Populus hybrid zones makes feasible the mapping of loci that contribute to reproductive isolation and trait differences
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Richmond, Surrey, UK
    Heredity (Edinb) 98:74-84. 2007
  3. pmc Review. The genic view of plant speciation: recent progress and emerging questions
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Philos Trans R Soc Lond B Biol Sci 363:3023-36. 2008
  4. pmc Genetics of species differences in the wild annual sunflowers, Helianthus annuus and H. petiolaris
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
    Genetics 169:2225-39. 2005
  5. ncbi request reprint Barrier to gene flow between two ecologically divergent Populus species, P. alba (white poplar) and P. tremula (European aspen): the role of ecology and life history in gene introgression
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 14:1045-57. 2005
  6. ncbi request reprint Adaptation to environmental stress: a rare or frequent driver of speciation?
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
    J Evol Biol 18:893-900. 2005
  7. ncbi request reprint Towards forest community and ecosystem genomics
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, UK
    New Phytol 173:673-6. 2007
  8. ncbi request reprint Shared alleles in sympatric oaks: recurrent gene flow is a more parsimonious explanation than ancestral polymorphism
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 15:2007-12. 2006
  9. doi request reprint Within-population spatial genetic structure in four naturally fragmented species of a neotropical inselberg radiation, Alcantarea imperialis, A. geniculata, A. glaziouana and A. regina (Bromeliaceae)
    T Barbara
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
    Heredity (Edinb) 101:285-96. 2008
  10. ncbi request reprint Population differentiation and species cohesion in two closely related plants adapted to neotropical high-altitude 'inselbergs', Alcantarea imperialis and Alcantarea geniculata (Bromeliaceae)
    T Barbara
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 16:1981-92. 2007

Detail Information

Publications24

  1. ncbi request reprint Contact zones: natural labs for studying evolutionary transitions
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Curr Biol 16:R407-9. 2006
    ..Contrasts between related diploid and polyploid taxa can serve as windows into the evolution of sexual systems. A recent study of a moving diploid-polyploid contact zone explores this topic in novel ways...
  2. ncbi request reprint Admixture in European Populus hybrid zones makes feasible the mapping of loci that contribute to reproductive isolation and trait differences
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Richmond, Surrey, UK
    Heredity (Edinb) 98:74-84. 2007
    ..tremula genotypes. We interpret our results in terms of the potential for admixture mapping in these two ecologically divergent Populus species, and we validate a modified approach of studying genotypic clines in 'mosaic' hybrid zones...
  3. pmc Review. The genic view of plant speciation: recent progress and emerging questions
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Philos Trans R Soc Lond B Biol Sci 363:3023-36. 2008
    ....
  4. pmc Genetics of species differences in the wild annual sunflowers, Helianthus annuus and H. petiolaris
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
    Genetics 169:2225-39. 2005
    ..Our results inform the genetics of species differences in Helianthus and suggest an approach for the simultaneous mapping of inter- and intraspecific QTL...
  5. ncbi request reprint Barrier to gene flow between two ecologically divergent Populus species, P. alba (white poplar) and P. tremula (European aspen): the role of ecology and life history in gene introgression
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 14:1045-57. 2005
    ..alba N(e)c. 500-550; P. tremula N(e)c. 550-700). Our results indicate that hybrid zones will be valuable tools for studying the genetic architecture of the barrier to gene flow between these two ecologically divergent Populus species...
  6. ncbi request reprint Adaptation to environmental stress: a rare or frequent driver of speciation?
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
    J Evol Biol 18:893-900. 2005
    ..We pinpoint areas for future study and predict that in many taxa 'broad' hybrid zones maintained by ecological selection will be valuable venues for addressing the link between environmental stress, adaptation, and speciation...
  7. ncbi request reprint Towards forest community and ecosystem genomics
    Christian Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3DS, UK
    New Phytol 173:673-6. 2007
  8. ncbi request reprint Shared alleles in sympatric oaks: recurrent gene flow is a more parsimonious explanation than ancestral polymorphism
    C Lexer
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 15:2007-12. 2006
  9. doi request reprint Within-population spatial genetic structure in four naturally fragmented species of a neotropical inselberg radiation, Alcantarea imperialis, A. geniculata, A. glaziouana and A. regina (Bromeliaceae)
    T Barbara
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey, UK
    Heredity (Edinb) 101:285-96. 2008
    ..Our results indicate a high potential for divergence with gene flow in inselberg bromeliads and they provide base-line data about the long-term effects of fragmentation in plants...
  10. ncbi request reprint Population differentiation and species cohesion in two closely related plants adapted to neotropical high-altitude 'inselbergs', Alcantarea imperialis and Alcantarea geniculata (Bromeliaceae)
    T Barbara
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 16:1981-92. 2007
    ....
  11. doi request reprint Sympatric bromeliad species (Pitcairnia spp.) facilitate tests of mechanisms involved in species cohesion and reproductive isolation in Neotropical inselbergs
    C Palma-Silva
    Jodrell Laboratory, Royal Botanic Gardens Kew, Richmond, Surrey, UK
    Mol Ecol 20:3185-201. 2011
    ..Inselbergs with multiple closely related co-occurring species should be of special interest to students of speciation in mountain systems, and to ongoing conservation programmes in the Atlantic Rainforest biodiversity hotspot...
  12. pmc Reconstructing the history of selection during homoploid hybrid speciation
    Sophie Karrenberg
    Institute of Integrative Biology, Eidgenossische Technische Hochschule Zurich, Zurich, Switzerland
    Am Nat 169:725-37. 2007
    ..This study presents a new method to test for selection and supports earlier claims that fertility selection and phenotypic selection on ecologically relevant traits have operated simultaneously during sunflower hybrid speciation...
  13. ncbi request reprint Clonality and spatial genetic structure in Populus x canescens and its sympatric backcross parent P. alba in a Central European hybrid zone
    Marcela van Loo
    Jodrell Laboratory, Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    New Phytol 177:506-16. 2008
    ..alba and P. tremula in time and space. Both clonality and SGS need to be taken into account explicitly when designing population genomics studies of locus-specific effects in hybrid zones...
  14. pmc Genetic architecture of leaf ecophysiological traits in Helianthus
    Larry C Brouillette
    Department of Plant Biology, University of Georgia, Athens, GA 30602, USA
    J Hered 98:142-6. 2007
    ..We speculate that the genetic architecture underlying leaf nitrogen may have facilitated the colonization of active desert sand dunes by H. anomalus...
  15. pmc Microsatellite signature of ecological selection for salt tolerance in a wild sunflower hybrid species, Helianthus paradoxus
    Cécile Edelist
    Department of Biology, Indiana University, Bloomington, IN 47405, USA
    Mol Ecol 15:4623-34. 2006
    ..In contrast, no difference in diversity levels was observed between the two microsatellite classes in parental populations...
  16. pmc Hybridization and the colonization of novel habitats by annual sunflowers
    Loren H Rieseberg
    Department of Biology, Indiana University, Bloomington, IN 47405, USA
    Genetica 129:149-65. 2007
    ..This body of work corroborates earlier claims regarding the role of hybridization in adaptive evolution and provides an experimental and conceptual framework for ongoing studies in this area...
  17. ncbi request reprint A genetic linkage map of Silene vulgaris based on AFLP markers
    Martin Bratteler
    ETH Zurich, Institute of Integrative Biology, Plan Ecological Genetics, 8092 Zurich, Switzerland
    Genome 49:320-7. 2006
    ..The maps represent a first step towards the identification of quantitative trait loci associated with habitat adaptation in the non-model species Silene vulgaris...
  18. pmc Response to salinity in the homoploid hybrid species Helianthus paradoxus and its progenitors H. annuus and H. petiolaris
    Sophie Karrenberg
    Plant Ecological Genetics, Institute of Integrative Biology, ETH Zurich, 8092 Zurich, Switzerland
    New Phytol 170:615-29. 2006
    ..paradoxus is related to sodium replacing potassium, calcium and magnesium as vacuolar osmotica. The evolutionary and genetic mechanisms likely to be involved are discussed...
  19. ncbi request reprint Sympatric speciation in palms on an oceanic island
    Vincent Savolainen
    Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3DS, UK
    Nature 441:210-3. 2006
    ..This case study of sympatric speciation in plants provides an opportunity for refining theoretical models on the origin of species, and new impetus for exploring putative plant and animal examples on oceanic islands...
  20. pmc Selection on leaf ecophysiological traits in a desert hybrid Helianthus species and early-generation hybrids
    Fulco Ludwig
    Department of Plant Biology, 2502 Plant Sciences Building, University of Georgia, Athens, Georgia 30602 7271, USA
    Evolution 58:2682-92. 2004
    ....
  21. pmc Reconstructing the origin of Helianthus deserticola: survival and selection on the desert floor
    Briana L Gross
    Department of Biology, Indiana University, Bloomington, Indiana 47405, USA
    Am Nat 164:145-56. 2004
    ..deserticola phenotype. Thus, H. deserticola may have originated from habitat-mediated directional selection acting on hybrids between H. annuus and H. petiolaris in a desert environment...
  22. ncbi request reprint The origin of ecological divergence in Helianthus paradoxus (Asteraceae): selection on transgressive characters in a novel hybrid habitat
    Christian Lexer
    Indiana University, Department of Biology, Jordan Hall 325, Bloomington, Indiana 47405, USA
    Evolution 57:1989-2000. 2003
    ..annuus and H. petiolaris. These results are consistent with the hypothesis that transgressive segregation of elemental uptake and leaf succulence contributed to the origin of salt adaptation in the diploid hybrid species H. paradoxus...
  23. ncbi request reprint Major ecological transitions in wild sunflowers facilitated by hybridization
    Loren H Rieseberg
    Department of Biology, Indiana University, Bloomington, IN 47405, USA
    Science 301:1211-6. 2003
    ..The same combinations of parental chromosomal segments required to generate extreme phenotypes in synthetic hybrids also occurred in ancient hybrids. Thus, hybridization facilitated ecological divergence in sunflowers...
  24. ncbi request reprint Cross-species transfer of nuclear microsatellite markers: potential and limitations
    Thelma Barbará
    Jodrell Laboratory, Royal Botanic Gardens Kew, Richmond, Surrey TW9 3DS, UK
    Mol Ecol 16:3759-67. 2007
    ..We discuss the implications of these findings and close with an outlook on potential alternative sources of cross-species transferable markers...