S C H Barrett

Summary

Affiliation: University of Toronto
Country: Canada

Publications

  1. ncbi request reprint The evolution and maintenance of monoecy and dioecy in Sagittaria latifolia (Alismataceae)
    Marcel E Dorken
    Department of Botany, University of Toronto, Ontario, Canada
    Evolution 56:31-41. 2002
  2. ncbi request reprint Mating patterns and genetic diversity in the wild daffodil Narcissus longispathus (Amaryllidaceae)
    S C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Heredity (Edinb) 92:459-65. 2004
  3. ncbi request reprint Sexual interference of the floral kind
    S C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Heredity (Edinb) 88:154-9. 2002
  4. ncbi request reprint The evolution of plant sexual diversity
    Spencer C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Nat Rev Genet 3:274-84. 2002
  5. ncbi request reprint Correlated evolution of floral morphology and mating-type frequencies in a sexually polymorphic plant
    Spencer C H Barrett
    Department of Botany, University of Toronto, Toronto, Ontario M5S 3B2, Canada
    Evolution 58:964-75. 2004
  6. ncbi request reprint The evolution of polymorphic sexual systems in daffodils (Narcissus)
    Spencer C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    New Phytol 165:45-53. 2005
  7. pmc Mating strategies in flowering plants: the outcrossing-selfing paradigm and beyond
    Spencer C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Philos Trans R Soc Lond B Biol Sci 358:991-1004. 2003
  8. ncbi request reprint Mating patterns and demography in the tristylous daffodil Narcissus triandrus
    K A Hodgins
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada M5S 3B2
    Heredity (Edinb) 96:262-70. 2006
  9. pmc Multiple multilocus DNA barcodes from the plastid genome discriminate plant species equally well
    Aron J Fazekas
    Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada
    PLoS ONE 3:e2802. 2008
  10. ncbi request reprint Solving the puzzle of mirror-image flowers
    Linley K Jesson
    Department of Botany, University of Toronto, Ontario, Canada
    Nature 417:707. 2002

Detail Information

Publications48

  1. ncbi request reprint The evolution and maintenance of monoecy and dioecy in Sagittaria latifolia (Alismataceae)
    Marcel E Dorken
    Department of Botany, University of Toronto, Ontario, Canada
    Evolution 56:31-41. 2002
    ..latifolia is governed by interactions between ecology, life history, and mating...
  2. ncbi request reprint Mating patterns and genetic diversity in the wild daffodil Narcissus longispathus (Amaryllidaceae)
    S C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Heredity (Edinb) 92:459-65. 2004
    ..15. The observed patterns of genetic differentiation among populations are likely influenced by the mating system, and a combination of local topography, watershed affinities and gene flow...
  3. ncbi request reprint Sexual interference of the floral kind
    S C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Heredity (Edinb) 88:154-9. 2002
    ....
  4. ncbi request reprint The evolution of plant sexual diversity
    Spencer C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Nat Rev Genet 3:274-84. 2002
    ..The integration of phylogenetic, ecological and population-genetic studies have provided new insights into the selective mechanisms that are responsible for major evolutionary transitions between reproductive modes...
  5. ncbi request reprint Correlated evolution of floral morphology and mating-type frequencies in a sexually polymorphic plant
    Spencer C H Barrett
    Department of Botany, University of Toronto, Toronto, Ontario M5S 3B2, Canada
    Evolution 58:964-75. 2004
    ..triandrus. We interpret the L-biased morph ratios and the unusual morphology of N. triandrus as a consequence of its atypical intramorph compatibility system...
  6. ncbi request reprint The evolution of polymorphic sexual systems in daffodils (Narcissus)
    Spencer C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    New Phytol 165:45-53. 2005
    ..These features are consequences of the unusual association between stylar polymorphism and a self-incompatibility system that permits intramorph mating...
  7. pmc Mating strategies in flowering plants: the outcrossing-selfing paradigm and beyond
    Spencer C H Barrett
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Philos Trans R Soc Lond B Biol Sci 358:991-1004. 2003
    ..The scope of future research on mating strategies needs to be broadened to include investigations of functional links among flowers, inflorescences and plant architecture within the framework of life-history evolution...
  8. ncbi request reprint Mating patterns and demography in the tristylous daffodil Narcissus triandrus
    K A Hodgins
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada M5S 3B2
    Heredity (Edinb) 96:262-70. 2006
    ..There were no consistent differences among the style morphs in outcrossing or biparental inbreeding indicating that the maintenance of trimorphism vs dimorphism is unlikely to be associated with inbreeding of maternal parents...
  9. pmc Multiple multilocus DNA barcodes from the plastid genome discriminate plant species equally well
    Aron J Fazekas
    Department of Integrative Biology, University of Guelph, Guelph, Ontario, Canada
    PLoS ONE 3:e2802. 2008
    ....
  10. ncbi request reprint Solving the puzzle of mirror-image flowers
    Linley K Jesson
    Department of Botany, University of Toronto, Ontario, Canada
    Nature 417:707. 2002
    ..Here we show that a mendelian locus governs the inheritance of style orientation and that this curious form of sexual asymmetry functions to promote cross-pollination in bee-pollinated plants...
  11. ncbi request reprint Plant reproductive systems and evolution during biological invasion
    Spencer C H Barrett
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks St, Toronto, ON, Canada M5S 3B2
    Mol Ecol 17:373-83. 2008
    ..Knowledge of the likelihood and speed at which local adaptation evolves in invasive plants will be particularly important for management practices when evolutionary changes enhance ecological opportunities and invasive spread...
  12. ncbi request reprint Sexing pollen reveals female bias in a dioecious plant
    Ivana Stehlik
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
    New Phytol 175:185-94. 2007
    ..nivalis, but is insufficient to fully explain the degree of bias...
  13. ncbi request reprint Pollination intensity influences sex ratios in dioecious Rumex nivalis, a wind-pollinated plant
    Ivana Stehlik
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Evolution 60:1207-14. 2006
    ..96). Our results are the first to demonstrate a functional relation between stigmatic pollen capture, seed set, and sex ratio and suggest that certation can contribute towards female-biased sex ratios in dioecious plants...
  14. pmc High outcrossing in the annual colonizing species Ambrosia artemisiifolia (Asteraceae)
    Jannice Friedman
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks St, Toronto, Ontario, Canada
    Ann Bot 101:1303-9. 2008
    ..Here, the role of density for the mating system of Ambrosia artemisiifolia (common ragweed), a wind-pollinated annual colonizing species previously reported as self-compatible, is explored...
  15. ncbi request reprint Population structure and genetic diversity in tristylous Narcissus triandrus: insights from microsatellite and chloroplast DNA variation
    Kathryn A Hodgins
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON M5S 3B2, Canada
    Mol Ecol 16:2317-32. 2007
    ..M-morph frequencies were positively correlated with differentiation at microsatellite loci, indicating that the evolutionary processes influencing these neutral markers also influence alleles controlling the style morphs...
  16. pmc Environmental influence on primary sex ratio in a dioecious plant
    Ivana Stehlik
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada M5S 3B2
    Proc Natl Acad Sci U S A 105:10847-52. 2008
    ..The most probable explanation for biased primary sex ratios in Rumex is selective fertilization resulting from pollen tube competition...
  17. doi request reprint The population genomics of plant adaptation
    Mathieu Siol
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
    New Phytol 188:313-32. 2010
    ....
  18. doi request reprint The consequences of monoecy and protogyny for mating in wind-pollinated Carex
    Jannice Friedman
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada
    New Phytol 181:489-97. 2009
    ..We propose that geitonogamy in self-compatible wind-pollinated species with unisexual flowers may be widespread and provides reproductive assurance...
  19. pmc Wind of change: new insights on the ecology and evolution of pollination and mating in wind-pollinated plants
    Jannice Friedman
    Department of Ecology and Evolutionary Biology, University of Toronto, Ontario, Canada
    Ann Bot 103:1515-27. 2009
    ..Finally, it is proposed that geitonogamous selfing may alleviate pollen limitation in many wind-pollinated plants with unisexual flowers...
  20. pmc Mating-system variation, demographic history and patterns of nucleotide diversity in the Tristylous plant Eichhornia paniculata
    Rob W Ness
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario M5S 3B2, Canada
    Genetics 184:381-92. 2010
    ..Our results suggest that the recent multiple origins of selfing in E. paniculata from diverse outcrossing populations result in higher diversity than expected under long-term equilibrium...
  21. pmc Understanding plant reproductive diversity
    Spencer C H Barrett
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
    Philos Trans R Soc Lond B Biol Sci 365:99-109. 2010
    ..For each evolutionary transition, I consider what we have discovered and some of the problems that still remain unsolved. I conclude by discussing how new approaches might influence future research in plant reproductive biology...
  22. pmc Darwin's legacy: the forms, function and sexual diversity of flowers
    Spencer C H Barrett
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Philos Trans R Soc Lond B Biol Sci 365:351-68. 2010
    ..This has helped to link work on pollination biology and mating systems, two subfields of reproductive biology that remained largely isolated during much of the twentieth century despite Darwin's efforts towards integration...
  23. pmc Evolutionary constraints on adaptive evolution during range expansion in an invasive plant
    Robert I Colautti
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada
    Proc Biol Sci 277:1799-806. 2010
    ..Identifying genetic constraints on key life-history traits can provide novel insights into invasion dynamics and the causes of range limits in introduced species...
  24. pmc Ecological genetics of sex ratios in plant populations
    Spencer C H Barrett
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada
    Philos Trans R Soc Lond B Biol Sci 365:2549-57. 2010
    ....
  25. ncbi request reprint Female reproductive success and the evolution of mating-type frequencies in tristylous populations
    Kathryn A Hodgins
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    New Phytol 171:569-80. 2006
    ..Our results suggest that interactions between mating patterns and female fertility are responsible for variation in morph frequencies and loss of the M-morph from tristylous populations of N. triandrus...
  26. pmc Spatial ecology of mating success in a sexually polymorphic plant
    Ivana Stehlik
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Proc Biol Sci 273:387-94. 2006
    ..Mating success in N. assoanus was characterized by both density- and frequency-dependent processes, a condition that may be a general feature of the spatial ecology of plant mating...
  27. pmc The genetics of mirror-image flowers
    Linley K Jesson
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Proc Biol Sci 269:1835-9. 2002
    ..The simple inheritance of dimorphic enantiostyly has implications for the evolution and maintenance of this unusual sexual polymorphism...
  28. doi request reprint Evolutionary pathways to self-fertilization in a tristylous plant species
    Spencer C H Barrett
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, Ontario, Canada
    New Phytol 183:546-56. 2009
    ..The relatively simple genetic control of herkogamy reduction and frequent colonizing episodes may often create demographic conditions favouring transitions to selfing in E. paniculata...
  29. ncbi request reprint A theoretical investigation of the evolution and maintenance of mirror-image flowers
    Linley K Jesson
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Am Nat 161:916-30. 2003
    ....
  30. ncbi request reprint Life-history differentiation and the maintenance of monoecy and dioecy in Sagittaria latifolia (Alismataceae)
    Marcel E Dorken
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada M5S 3B2
    Evolution 57:1973-88. 2003
    ..Selection for divergent life histories between monoecious and dioecious populations of S. latifolia appears to be the principal mechanism maintaining the integrity of the two sexual systems in areas of geographic overlap...
  31. doi request reprint Asymmetrical mating patterns and the evolution of biased style-morph ratios in a tristylous daffodil
    Kathryn A Hodgins
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, Canada
    Genet Res (Camb) 90:3-15. 2008
    ....
  32. ncbi request reprint Mechanisms governing sex-ratio variation in dioecious Rumex nivalis
    Ivana Stehlik
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario M5S 3B2, Canada
    Evolution 59:814-25. 2005
    ..Poor performance of Y1Y2 gametophytes and male sporophytes in R. nivalis may be a consequence of the accumulation of deleterious mutations on Y-sex chromosomes...
  33. ncbi request reprint Chloroplast haplotype variation among monoecious and dioecious populations of Sagittaria latifolia (Alismataceae) in eastern North America
    M E Dorken
    Department of Botany, University of Toronto, 25 Willcocks Street, ON, M5S 3B2, Canada
    Mol Ecol 13:2699-707. 2004
    ..The distribution of cpDNA haplotypes in dioecious populations represents a subset of the variation found in monoecious populations, a pattern expected if dioecy has evolved from monoecy in S. latifolia...
  34. ncbi request reprint Phylogenetic analysis of the ecological correlates of dioecy in angiosperms
    J C Vamosi
    Department of Botany, University of Toronto, Toronto, ON Canada, Canada
    J Evol Biol 16:1006-18. 2003
    ....
  35. doi request reprint Division of labour within flowers: heteranthery, a floral strategy to reconcile contrasting pollen fates
    M Vallejo-Marín
    Department of Ecology and Evolutionary Biology, University of Toronto, Toronto, ON, Canada
    J Evol Biol 22:828-39. 2009
    ....
  36. ncbi request reprint Perspective: purging the genetic load: a review of the experimental evidence
    Peter Crnokrak
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario, M5S 3B2, Canada
    Evolution 56:2347-58. 2002
    ..Further research is required to resolve the discrepancy between the results obtained using different experimental approaches...
  37. pmc Sex determination and the evolution of dioecy from monoecy in Sagittaria latifolia (Alismataceae)
    Marcel E Dorken
    Department of Botany, University of Toronto, 25 Willcocks Street, Toronto, Ontario MSS 3B2, Canada
    Proc Biol Sci 271:213-9. 2004
    ..These results are consistent with predictions for the evolution of dioecy via gynodioecy, rather than the expected monoecy-paradioecy pathway, given the ancestral monoecious condition...
  38. pmc Modification of flower architecture during early stages in the evolution of self-fertilization
    Mario Vallejo-Marín
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada M5S 3B2
    Ann Bot 103:951-62. 2009
    ....
  39. doi request reprint Natural selection on floral traits through male and female function in wild populations of the heterostylous daffodil Narcissus triandrus
    Kathryn A Hodgins
    Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, Canada
    Evolution 62:1751-63. 2008
    ..triandrus was stronger through male than female function probably because floral morphology plays an important role in promoting effective cross-pollen transfer in populations of this heterostylous species...
  40. doi request reprint Pollinator responses to variation in floral display and flower size in dioecious Sagittaria latifolia (Alismataceae)
    Mélanie Glaettli
    Department of Ecology and Evolutionary Biology, 25 Willcocks Street, University of Toronto, Toronto, Canada
    New Phytol 179:1193-201. 2008
    ..Small daily floral displays may benefit males by allowing extended flowering periods and greater opportunities for effective pollen dispersal...
  41. ncbi request reprint Consequences of hierarchical allocation for the evolution of life-history traits
    Anne C Worley
    Department of Botany, University of Toronto, Toronto, Ontario M5S 3B2, Canada
    Am Nat 161:153-67. 2003
    ..Thus, allocation hierarchies can profoundly affect life-history evolution by causing traits to evolve in the opposite direction to that predicted by trade-offs...
  42. pmc Sex in advertising: dioecy alters the net benefits of attractiveness in Sagittaria latifolia (Alismataceae)
    Jana C Vamosi
    Department of Biological Sciences, University of Calgary, Canada
    Proc Biol Sci 273:2401-7. 2006
    ..We propose that this could explain why dioecy is strongly correlated with reduced floral display among angiosperm species...
  43. ncbi request reprint Rooting phylogenetic trees with distant outgroups: a case study from the commelinoid monocots
    Sean W Graham
    Department of Biological Sciences, University of Alberta, Edmonton, Canada
    Mol Biol Evol 19:1769-81. 2002
    ..Rooting discriminatory power is shown to be stronger, in general, for more closely related outgroups and is highly correlated among different real outgroups, genes, and optimality criteria...
  44. pmc Frequency-dependent variation in reproductive success in Narcissus: implications for the maintenance of stigma-height dimorphism
    John D Thompson
    Centre d Ecologie Fonctionnelle et Evolutive, CNRS, 1919 Route de Mende, 34293 Montpellier Cedex 5, France
    Proc Biol Sci 270:949-53. 2003
    ..Our experimental results also provide insights into the mechanisms governing the biased style-morph ratios in populations of Narcissus species...
  45. ncbi request reprint Botany: specialized bird perch aids cross-pollination
    Bruce Anderson
    School of Botany and Zoology, University of KwaZulu Natal, Private Bag X01, Scottsville, Pietermaritzburg 3209, South Africa
    Nature 435:41-2. 2005
    ..We find that this structure promotes the plant's mating success by causing the malachite sunbird (Nectarinia famosa), its main pollinator, to adopt a position ideal for the cross-pollination of its unusual ground-level flowers...
  46. ncbi request reprint Herkogamy and mating patterns in the self-compatible daffodil Narcissus longispathus
    Mónica Medrano
    Estacion Biologica de Donana, Consejo Superior de Investigaciones Cientificas, E 41013 Sevilla, Spain
    Ann Bot 95:1105-11. 2005
    ....
  47. ncbi request reprint Whither plant evo-devo?
    William E Friedman
    Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO 80309, USA
    New Phytol 178:468-72. 2008
  48. ncbi request reprint Reproductive consequences of interactions between clonal growth and sexual reproduction in Nymphoides peltata: a distylous aquatic plant
    Yong Wang
    Laboratory of Plant Systematics and Evolutionary Biology, College of Life Sciences, Wuhan University, Wuhan 430072, Hubei, China
    New Phytol 165:329-35. 2005
    ..peltata we found no evidence for evolutionary changes to the heterostylous syndrome, as reported in Nymphoides, including populations of N. peltata in other parts of its geographical range...