Richard J. Abbott
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View article: Genomic changes and stabilization following homoploid hybrid speciation of the Oxford ragwort Senecio squalidus
Genomic changes and stabilization following homoploid hybrid speciation of the Oxford ragwort Senecio squalidus Open
Oxford ragwort (Senecio squalidus) is one of only two homoploid hybrid species known to have originated very recently, so it is a unique model for determining genomic changes and stabilization following homoploid hybrid speciation. Here, w…
View article: The emerging importance of cross‐ploidy hybridisation and introgression
The emerging importance of cross‐ploidy hybridisation and introgression Open
Natural hybridisation is now recognised as pervasive in its occurrence across the Tree of Life. Resurgent interest in natural hybridisation fuelled by developments in genomics has led to an improved understanding of the genetic factors tha…
View article: Evolutionary origin of genomic structural variations in domestic yaks
Evolutionary origin of genomic structural variations in domestic yaks Open
Yak has been subject to natural selection, human domestication and interspecific introgression during its evolution. However, genetic variants favored by each of these processes have not been distinguished previously. We constructed a grap…
View article: Multi-omics data provide insight into the adaptation of the glasshouse plant Rheum nobile to the alpine subnival zone
Multi-omics data provide insight into the adaptation of the glasshouse plant Rheum nobile to the alpine subnival zone Open
Subnival glasshouse plants provide a text-book example of high-altitude adaptation with reproductive organs enclosed in specialized semi-translucent bracts, monocarpic reproduction and continuous survival under stress. Here, we present gen…
View article: Edaphic ecotypic divergence in <i>Senecio vulgaris</i> and the evolutionary potential of predominantly self-fertilising species
Edaphic ecotypic divergence in <i>Senecio vulgaris</i> and the evolutionary potential of predominantly self-fertilising species Open
Funding: The research was funded by a research studentship from the Ministry of Agriculture, Fisheries and Food (United Kingdom).
View article: Self-pollination, style length development and seed set in self-compatible Asteraceae: evidence from <i>Senecio vulgaris</i> L.
Self-pollination, style length development and seed set in self-compatible Asteraceae: evidence from <i>Senecio vulgaris</i> L. Open
Background: Variation in style length has been reported in Senecio vulgaris and has been associated with outcrossing rate. Aims: To determine if (i) long styles lack germinated pollen on stigmas left to self-pollinate, (ii) successful self…
View article: Introduction to special issue: the ecology and evolution of plants in extreme environments
Introduction to special issue: the ecology and evolution of plants in extreme environments Open
In plant ecology, extreme environments are those that pose physiological or other limitations to plant growth, especially for non-adapted taxa. In these environments, the severity of climate conditions and/or the limitations imposed by par…
View article: Plant speciation in the Namib Desert: potential origin of a widespread derivative species from a narrow endemic
Plant speciation in the Namib Desert: potential origin of a widespread derivative species from a narrow endemic Open
Funding: This research was funded in part by the award of a Natural Environment Research Council (NERC) CASE research studentship to J.J.M.
View article: Abiotic Niche Divergence of Hybrid Species from Their Progenitors
Abiotic Niche Divergence of Hybrid Species from Their Progenitors Open
Although more frequently discussed recently than previously, the role of ecology in homoploid hybrid and allopolyploid speciation has not been subjected to comparative analysis. We examined abiotic niche divergence of 22 assumed homoploid …
View article: Plant speciation in the Namib Desert: origin of a widespread derivative species from a narrow endemic
Plant speciation in the Namib Desert: origin of a widespread derivative species from a narrow endemic Open
Background Parapatric (or ‘budding’) speciation is increasingly recognized as an important phenomenon in plant evolution but its role in extreme (e.g. desert) environments is poorly documented. Aims To test this speciation model in a hypot…
View article: Plant speciation in the Namib Desert: potential origin of a widespread derivative species from a narrow endemic
Plant speciation in the Namib Desert: potential origin of a widespread derivative species from a narrow endemic Open
Parapatric (or ‘budding’) speciation is increasingly recognised as an important phenomenon in plant evolution but its role in extreme (e.g. desert) environments is poorly documented. To test this speciation model in a hypothesised sister p…
View article: Plant speciation in the Quaternary
Plant speciation in the Quaternary Open
There are conflicting views between palaeobotanists and plant systematists/evolutionary biologists regarding the occurrence of plant speciation in the Quaternary. Palaeobotanists advocate that Quaternary speciation was rare despite opposin…
View article: Piezo-deformable Mirrors for Active Mode Matching in Advanced LIGO
Piezo-deformable Mirrors for Active Mode Matching in Advanced LIGO Open
The detectors of the laser interferometer gravitational-wave observatory (LIGO) are broadly limited by the quantum noise and rely on the injection of squeezed states of light to achieve their full sensitivity. Squeezing improvement is limi…
View article: Occurrence and Prevention of Delayed Autonomous Selfing in Salvia umbratica (Lamiaceae)
Occurrence and Prevention of Delayed Autonomous Selfing in Salvia umbratica (Lamiaceae) Open
Delayed autonomous selfing (DAS) provides reproductive assurance under conditions of pollinator and/or pollen-limitation. Few plant species have been investigated to determine if DAS is terminated when a flower is sufficiently pollinated b…
View article: Plant speciation in the Quaternary
Plant speciation in the Quaternary Open
Background : There are conflicting views between palaeobotanists and plant systematists / evolutionary biologists regarding the occurrence of plant speciation in the Quaternary. Palaeobotanists advocate that Quaternary speciation was rare …
View article: Sharing and reporting benefits from biodiversity research
Sharing and reporting benefits from biodiversity research Open
The most remarkable feature of our planet is the diversity of its life forms, ranging from viruses and nanobacteria to blue whales and giant sequoias to satanic leaf‐tailed geckos and leafy seadragons (look them up!). Life is found in esse…
View article: <i>Senecio</i> as a model system for integrating studies of genotype, phenotype and fitness
<i>Senecio</i> as a model system for integrating studies of genotype, phenotype and fitness Open
Summary Two major developments have made it possible to use examples of ecological radiations as model systems to understand evolution and ecology. First, the integration of quantitative genetics with ecological experiments allows detailed…
View article: Editorial: Polyploid Population Genetics and Evolution—From Theory to Practice
Editorial: Polyploid Population Genetics and Evolution—From Theory to Practice Open
EDITORIAL article Front. Ecol. Evol., 28 November 2019Sec. Evolutionary and Population Genetics Volume 7 - 2019 | https://doi.org/10.3389/fevo.2019.00460
View article: Ancient introgression drives adaptation to cooler and drier mountain habitats in a cypress species complex
Ancient introgression drives adaptation to cooler and drier mountain habitats in a cypress species complex Open
Introgression may act as an important source of new genetic variation to facilitate the adaptation of organisms to new environments, yet how introgression might enable tree species to adapt to higher latitudes and elevations remains unclea…
View article: Late Pleistocene speciation of three closely related tree peonies endemic to the Qinling–Daba Mountains, a major glacial refugium in Central China
Late Pleistocene speciation of three closely related tree peonies endemic to the Qinling–Daba Mountains, a major glacial refugium in Central China Open
Determining the factors promoting speciation is a major task in ecological and evolutionary research and can be aided by phylogeographic analysis. The Qinling–Daba Mountains (QDM) located in central China form an important geographic barri…
View article: Completing the hybridization triangle: the inheritance of genetic incompatibilities during homoploid hybrid speciation in ragworts (<i>Senecio</i>)
Completing the hybridization triangle: the inheritance of genetic incompatibilities during homoploid hybrid speciation in ragworts (<i>Senecio</i>) Open
A new homoploid hybrid lineage needs to establish a degree of reproductive isolation from its parent species if it is to persist as an independent entity, but the role hybridization plays in this process is known in only a handful of cases…
View article: Genetic diversity hotspots and refugia identified by mapping multi-plant species haplotype diversity in China: supplementary material
Genetic diversity hotspots and refugia identified by mapping multi-plant species haplotype diversity in China: supplementary material Open
Historical processes during the Quaternary are likely to have left a signature on the geographical distribution of intraspecific genetic variation. In particular, high genetic uniqueness could be expected within glacial refugia for multipl…
View article: Population genomic analysis reveals that homoploid hybrid speciation can be a lengthy process
Population genomic analysis reveals that homoploid hybrid speciation can be a lengthy process Open
An increasing number of species are thought to have originated by homoploid hybrid speciation ( HHS ), but in only a handful of cases are details of the process known. A previous study indicated that Picea purpurea , a conifer in the Qingh…
View article: Reticulate evolution within a spruce ( <i>Picea</i> ) species complex revealed by population genomic analysis
Reticulate evolution within a spruce ( <i>Picea</i> ) species complex revealed by population genomic analysis Open
The role of reticulation in the rapid diversification of organisms is attracting greater attention in evolutionary biology. Evidence of genetic exchange between diverging taxa is reported frequently, although most studies fail to show how …
View article: Demographic expansion and genetic load of the halophyte model plant <i>Eutrema salsugineum</i>
Demographic expansion and genetic load of the halophyte model plant <i>Eutrema salsugineum</i> Open
The halophyte model plant Eutrema salsugineum (Brassicaceae) disjunctly occurs in temperate to subarctic Asia and North America. This vast, yet extremely discontinuous distribution constitutes an ideal system to examine long‐distance dispe…
View article: Hybridisation and detection of a hybrid zone between mesic and desert ragworts (<i>Senecio</i>) across an aridity gradient in the eastern Mediterranean
Hybridisation and detection of a hybrid zone between mesic and desert ragworts (<i>Senecio</i>) across an aridity gradient in the eastern Mediterranean Open
Background: Hybrid zones provide excellent opportunities for studying plant adaptation and speciation.
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\nAims: We tested whether two herbaceous species of Senecio, S. vernalis and S. glaucus, hybridise in the eastern Mediterranean regio…