Two distinct AFLP types in three populations of marram grass (<i>Ammophila arenaria</i>) in Wales

Hol, W. H. Gera; Wurff, A.W.G. van der; Skøt, Leif; Cook, R.

doi:10.1017/s147926210899417x

Cited by 8 publications

(6 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the simple‐match similarity coefficient has been used to differentiate populations of the tetraploid marram grass based on AFLPs ( Amnophila arenaria ; Hol et al . ) and to assess isolation by distance patterns in hexaploid and enneaploid (9x) individuals of a tallgrass species ( Andropogon gerardii ; Rouse et al . ).…”

Section: Extending Population Genetic Tools Used For Diploids To Polymentioning

confidence: 99%

“…There are several distance/ similarity measures (Box 3), most of which were not specifically developed for polyploids, but which can be applied to polyploid data. For example, the simple-match similarity coefficient has been used to differentiate populations of the tetraploid marram grass based on AFLPs (Amnophila arenaria; Hol et al 2008) and to assess isolation by distance patterns in hexaploid and enneaploid (9x) individuals of a tallgrass species (Andropogon gerardii; Rouse et al 2011). Its calculation for polyploid data does not require modification of the formula for haploids and the index can include mixed ploidies (Kosman & Leonard 2005).…”

Section: Genetic Distance-based Analysesmentioning

confidence: 99%

See 1 more Smart Citation

Recent progress and challenges in population genetics of polyploid organisms: an overview of current state‐of‐the‐art molecular and statistical tools

2013

View full text Add to dashboard Cite

Despite the importance of polyploidy and the increasing availability of new genomic data, there remain important gaps in our knowledge of polyploid population genetics. These gaps arise from the complex nature of polyploid data (e.g. multiple alleles and loci, mixed inheritance patterns, association between ploidy and mating system variation). Furthermore, many of the standard tools for population genetics that have been developed for diploids are often not feasible for polyploids. This review aims to provide an overview of the state-of-the-art in polyploid population genetics and to identify the main areas where further development of molecular techniques and statistical theory is required. We review commonly used molecular tools (amplified fragment length polymorphism, microsatellites, Sanger sequencing, next-generation sequencing and derived technologies) and their challenges associated with their use in polyploid populations: that is, allele dosage determination, null alleles, difficulty of distinguishing orthologues from paralogues and copy number variation. In addition, we review the approaches that have been used for population genetic analysis in polyploids and their specific problems. These problems are in most cases directly associated with dosage uncertainty and the problem of inferring allele frequencies and assumptions regarding inheritance. This leads us to conclude that for advancing the field of polyploid population genetics, most priority should be given to development of new molecular approaches that allow efficient dosage determination, and to further development of analytical approaches to circumvent dosage uncertainty and to accommodate 'flexible' modes of inheritance. In addition, there is a need for more simulation-based studies that test what kinds of biases could result from both existing and novel approaches.

show abstract

Section: Extending Population Genetic Tools Used For Diploids To Polymentioning

confidence: 99%

Section: Genetic Distance-based Analysesmentioning

confidence: 99%

Recent progress and challenges in population genetics of polyploid organisms: an overview of current state‐of‐the‐art molecular and statistical tools

2013

View full text Add to dashboard Cite

show abstract

“…It has been introduced in many other dune areas of the world for dune stabilization purposes (Tutin et al 1980). Although it is able to produce seeds, the main mechanism of dispersal is clonal growth, which results in low intra-population genetic variation within a site, with only a few related clones per site, and relatively high genetic distances between geographically separated populations (Hol et al 2008;Rodríguez-Echeverría et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Evidence of population differentiation in the dune grass Ammophila arenaria and its associated root-feeding nematodes

Peña

Bonte

Moens³

2009

Plant Soil

View full text Add to dashboard Cite

The interactions between herbivores and their host plants determine, to a great extent, the formation, structure and sustainability of terrestrial communities. The selection pressures that herbivores exert on plants and vice versa might vary geographically, leading eventually to population differentiation and local adaptation. In order to test whether there was reciprocal population differentiation among plants and belowground herbivores, we performed a cross-inoculation experiment using combinations of species and populations of root-feeders belonging to the genus Pratylenchus and the dune grass Ammophila arenaria from different geographic origins. Plant and herbivore responses in terms of growth and multiplication, respectively, were assessed at the end of the experiment. The 16 plant-herbivore combinations tested showed a high variation in the outcome of the interaction and revealed population differentiation in the responses of both, the host plant and the rootherbivores. The outcome in plant and herbivore performance was strongly case-dependent and for the sympatric combinations tested, support for local adaptation was not found. Nonetheless, the variation in plant-herbivore responses to experimental conditions highlights the plasticity of the interaction and may be pointing at spatial structuring in belowground plantherbivore interactions.

show abstract

“…The genotype of the populations from Het Zwin, Oostvoorne, Sa˜o Jacinto and Comporta has previously been characterised by means of ISSR markers (Rodriguez-Echeverria, Freitas & van der Putten 2008) revealing genetic differences between all these populations that corresponded to geographical distance. Although the distance between Westende and De Panne is somewhat smaller (17 km) than average distances in the cited study, a study by Hol et al (2008) demonstrated genetic differentiation between stands of A. arenaria in coastal and inland dunes located a mere 200 m apart. Analysis of seedlings of these six populations with AFLP markers confirmed both differentiation between populations and isolation by distance (Vandegehuchte M.L., Breyne P., de la Pen˜a E. & Bonte D., unpublished data).…”

Section: S T U D Y S I T E a N D S Y S T E Mmentioning

confidence: 59%

“…We deliberately chose geographically distant populations in order to maximise the genetic variation between, relative to within, populations. The low variation within populations is probably due to the almost exclusively clonal reproduction of A. arenaria in the field (Huiskes 1979; Hol et al. 2008).…”

Section: Methodsmentioning

confidence: 99%

Contrasting covariation of above- and belowground invertebrate species across plant genotypes

Vandegehuchte¹,

Peña

Bonte

2010

Journal of Animal Ecology

View full text Add to dashboard Cite

Summary1. Invertebrate species generally do not respond independently to genotypic variation in plants, giving rise to clusters of species that naturally associate with or avoid certain genotypes. This covariation causes coevolution to be diffuse rather than pairwise. Studies on this topic, however, have never considered the belowground invertebrate community, leaving a critical gap in our understanding. 2. We investigated the covariation among naturally colonising above-and belowground invertebrate species across six genetically distinct populations of the dune grass Ammophila arenaria. After having grown from seed in a common garden, plants were randomised in a single field site to exclude all but broad-sense genetic variation. 3. Strong positive covariation across genotypes among both above-and belowground invertebrates was detected, while correlations between these two groups were negative. This clustering of above-and belowground species matched well with order level taxonomy. Host range, trophic level and food type on the other hand did not correspond well with the clusters. Within the cluster of aboveground fauna, subsequent groupings were not related to any phylogenetic or ecological characteristic, although correlations within these subgroups were very high. We furthermore demonstrated significant differences in multiple invertebrate species occurrence between plant genotypes, in general as well as at the above-and belowground level. 4. The observed strong covariation suggests diffuse coevolution between A. arenaria and its associated invertebrate species. The trade-off between root and shoot invertebrates could however hamper directional selection on resistance to either group. 5. Our results clearly demonstrate the need for studies of plant-animal interactions to include the belowground fauna, as this might drastically alter our general conception of how plants and their associated animal communities interact and how these interactions shape the process of evolution.

show abstract

Two distinct AFLP types in three populations of marram grass (Ammophila arenaria) in Wales

Cited by 8 publications

References 29 publications

Recent progress and challenges in population genetics of polyploid organisms: an overview of current state‐of‐the‐art molecular and statistical tools

Recent progress and challenges in population genetics of polyploid organisms: an overview of current state‐of‐the‐art molecular and statistical tools

Evidence of population differentiation in the dune grass Ammophila arenaria and its associated root-feeding nematodes

Contrasting covariation of above- and belowground invertebrate species across plant genotypes

Contact Info

Product

Resources

About