Marcel E. Dorken
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View article: Environmental context shapes sex-specific costs of reproduction in a dioecious plant
Environmental context shapes sex-specific costs of reproduction in a dioecious plant Open
Background and Aims Trade-offs between current reproduction and future performance are fundamental constraints on evolution. In dioecious plants, females and males can differ in how much of a limiting resource they allocate to reproduction…
View article: Time in sympatry correlates with the strength of reproductive isolation in hybridising <i>Typha</i>
Time in sympatry correlates with the strength of reproductive isolation in hybridising <i>Typha</i> Open
In North America, hybridisation between Typha angustifolia and T. latifolia results in the highly impactful T. × glauca . In Europe, where its parental taxa are also sympatric, T . × glauca is scarce, suggesting stronger reproductive isola…
View article: Do costs of reproduction differ between the sexes of dioecious plants?
Do costs of reproduction differ between the sexes of dioecious plants? Open
Background Costs of reproduction arise from fitness-based trade-offs between current and future reproduction. Because the average fitness of females and males is constrained to be equal, and because costs of reproduction are paid in units …
View article: Allopatric speciation in cattails: Genomics reveal bottlenecks, balancing selection, and adaptive introgressions in Typha, a wetland ecosystem engineer
Allopatric speciation in cattails: Genomics reveal bottlenecks, balancing selection, and adaptive introgressions in Typha, a wetland ecosystem engineer Open
Speciation can be broadly understood within two non-mutually exclusive frameworks: genetic drift under isolation and natural selection under ecological divergence. Here, we examined the genomic diversity and differentiation of five Typha s…
View article: Costs of reproduction in flowering plants
Costs of reproduction in flowering plants Open
Summary Costs of reproduction arise when investments into current reproduction reduce future reproductive fitness. Studies on reproductive costs use diverse approaches, including the analysis of gene expression, physiology, trade‐offs betw…
View article: SNP‐RFLP Markers for the Study of <i>Arabidopsis lyrata</i>
SNP‐RFLP Markers for the Study of <i>Arabidopsis lyrata</i> Open
Arabidopsis lyrata has become a useful system for the study of comparative genomics, hybridization, polyploidization, and evolutionary transitions from outcrossing to selfing. Previous studies of its mating system have used microsatellite …
View article: Quality not quantity: seedlings of the invasive hybrid cattail Typha x glauca outcompete the more abundant seedlings of their maternal parent T. angustifolia
Quality not quantity: seedlings of the invasive hybrid cattail Typha x glauca outcompete the more abundant seedlings of their maternal parent T. angustifolia Open
Numerous invasive plant taxa are hybrids that outcompete their parent species, thus exhibiting heterosis. Invasive hybrids can also have an advantage if the genotypes of one or both parent species are replaced by hybrid genotypes (genetic …
View article: Heterosis is more important than propagule pressure for the establishment of invasive hybrid cattail (Typha x glauca) populations
Heterosis is more important than propagule pressure for the establishment of invasive hybrid cattail (Typha x glauca) populations Open
A notable proportion of invasive plant taxa are interspecific hybrids, and their success can be influenced by both the frequency with which hybrids are formed (propagule pressure) and their ability to outcompete their parent species. A vas…
View article: Range expansion of the invasive hybrid cattail Typha x glauca exceeds that of its maternal plant T. angustifolia in the western Prairie Pothole Region of North America
Range expansion of the invasive hybrid cattail Typha x glauca exceeds that of its maternal plant T. angustifolia in the western Prairie Pothole Region of North America Open
Wetlands around the world face unprecedented threats, including from invasive species. In North America, the invasive cattail hybrid Typha x glauca dominates wetlands around the Laurentian Great Lakes, and more recently was found in high a…
View article: Allopatric speciation in cattails: Genomics reveal bottlenecks, balancing selection, and adaptive introgressions in <i>Typha</i> , a wetland ecosystem engineer
Allopatric speciation in cattails: Genomics reveal bottlenecks, balancing selection, and adaptive introgressions in <i>Typha</i> , a wetland ecosystem engineer Open
Speciation can be broadly understood within two non-mutually exclusive frameworks: genetic drift under isolation and natural selection under ecological divergence. Here, we examined the genomic diversity and differentiation of five Typha s…
View article: Development of genomic resources for cattails ( <i>Typha</i> ), a globally important macrophyte genus
Development of genomic resources for cattails ( <i>Typha</i> ), a globally important macrophyte genus Open
A critical knowledge gap in freshwater plant research is the lack of genetic tools necessary to answer fundamental questions about their demographic histories, adaptation and phylogenetic relationships. One example of this is Typha , a glo…
View article: A simple method to genetically differentiate invasive F<sub>1</sub><i>Typha</i>hybrids (<i>T</i>. ×<i>glauca</i>) and advanced-generation/backcrossed hybrids from parent species (<i>T. latifolia</i>and<i>T. angustifolia</i>) in eastern Canada and northeastern USA
A simple method to genetically differentiate invasive F<sub>1</sub><i>Typha</i>hybrids (<i>T</i>. ×<i>glauca</i>) and advanced-generation/backcrossed hybrids from parent species (<i>T. latifolia</i>and<i>T. angustifolia</i>) in eastern Canada and northeastern USA Open
A widespread Typha (cattail) hybrid zone in southeastern Canada and northeastern USA comprises T. latifolia, T. angustifolia , and their hybrid T . × glauca . In this region the hybrid is considered invasive because of its detrimental impa…
View article: Self-fertilization does not lead to inbreeding depression in Typha parent species or hybrids
Self-fertilization does not lead to inbreeding depression in Typha parent species or hybrids Open
Some of the most impactful invasive plants are hybrids that exhibit heterosis and outperform their parent species. Heterosis can result from multiple genetic processes, and may also be more likely when parental populations are inbred. Howe…
View article: Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <i>Sagittaria latifolia</i>
Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <i>Sagittaria latifolia</i> Open
Many plants express their female and male sex roles at different times (dichogamy), with important consequences for mating. Dichogamy can yield mate limitation via biased floral sex ratios, particularly at the beginning and end of the flow…
View article: Causes and consequences of sex ratio variation in plants. A commentary on: ‘Life history characteristics and historical factors are important to explain regional variation in reproductive traits and genetic diversity in perennial mosses’
Causes and consequences of sex ratio variation in plants. A commentary on: ‘Life history characteristics and historical factors are important to explain regional variation in reproductive traits and genetic diversity in perennial mosses’ Open
This article comments on: Irene Bisang, Johan Ehrlén, and Lars Hedenäs. Life-history characteristics and historical factors are important to explain regional variation in reproductive traits and genetic diversity in perennial mosses, Annal…
View article: Development of genomic resources for cattails (<i>Typha</i>), a globally important macrophyte genus
Development of genomic resources for cattails (<i>Typha</i>), a globally important macrophyte genus Open
1. Background A critical knowledge gap in freshwater plants research is the lack of genetic tools necessary to answer fundamental questions about their demographic histories, adaptation, and phylogenetic relationships. One example of this …
View article: Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em>
Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em> Open
Datasets and analysis code for Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious Sagittaria latifolia List of file names, description and variable list, including full names and d…
View article: R codes and data files for analysis and data presentation for all data analysed on the study
R codes and data files for analysis and data presentation for all data analysed on the study Open
R codes for the linear and generalized linear mixed model analyses presented in the study "Self-fertilization does not lead to inbreeding depression in Typha parent species or hybrids" by Rock, Whitehead et al. Y prefix for each data file…
View article: Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em>
Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em> Open
Datasets and analysis code for Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious Sagittaria latifolia List of file names, description and variable list, including full names and d…
View article: Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em>
Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em> Open
Datasets and analysis code for Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious Sagittaria latifolia List of file names, description and variable list, including full names and d…
View article: Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em>
Datasets and analysis code for - Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious <em>Sagittaria latifolia</em> Open
Datasets and analysis code for Male reproductive success is not strongly affected by phenological changes in mate availability in monoecious Sagittaria latifolia List of file names, description and variable list, including full names and d…
View article: Sexual selection on male but not female function in monoecious and dioecious populations of broadleaf arrowhead ( <i>Sagittaria latifolia</i> )
Sexual selection on male but not female function in monoecious and dioecious populations of broadleaf arrowhead ( <i>Sagittaria latifolia</i> ) Open
Direct measures of sexual selection in plants are rare and complicated by immobility and modular growth. For plants, instantaneous measures of fitness typically scale with size, but covariances between size and mating success could obscure…
View article: Patterns of pollen dispersal and pollen capture in the hybridizing cattails, <i>Typha latifolia</i> and <i>Typha angustifolia</i>
Patterns of pollen dispersal and pollen capture in the hybridizing cattails, <i>Typha latifolia</i> and <i>Typha angustifolia</i> Open
Pollen dispersal regulates the formation of the invasive, wind-pollinated hybrid cattail Typha × glauca Godron, the F 1 offspring of the broadleaf ( Typha latifolia L.) and narrowleaf ( Typha angustifolia L.) cattail. An earlier study sugg…
View article: No evidence for incipient speciation by selfing in North American <i>Arabidopsis lyrata</i>
No evidence for incipient speciation by selfing in North American <i>Arabidopsis lyrata</i> Open
Self‐fertilization inherently restricts gene flow by reducing the fraction of offspring that can be produced by inter‐population matings. Therefore, mating system transitions from outcrossing to selfing could result in reproductive isolati…
View article: Variation in glyphosate effects and accumulation in emergent macrophytes
Variation in glyphosate effects and accumulation in emergent macrophytes Open
Sesin, Verena, Davy, Christina M., Dorken, Marcel E., Gilbert, Janice M., Freeland, Joanna R. (2021): Variation in glyphosate effects and accumulation in emergent macrophytes. Management of Biological Invasions 12 (1): 66-84, DOI: 10.3391/…
View article: Limited phenological and pollinator-mediated isolation among selfing and outcrossing <i>Arabidopsis lyrata</i> populations
Limited phenological and pollinator-mediated isolation among selfing and outcrossing <i>Arabidopsis lyrata</i> populations Open
Transitions from outcrossing to selfing have been a frequent evolutionary shift in plants and clearly play a role in species divergence. However, many questions remain about the initial mechanistic basis of reproductive isolation during th…