Incipient adaptive radiation of New Zealand and Australian <i>Microseris</i> (Asteraceae): an amplified fragment length polymorphism (AFLP) study

Vijverberg, Kitty; Kuperus, P.; Breeuwer, Johannes A. J.; Bachmann, Konrad

doi:10.1046/j.1420-9101.2000.00241.x

Cited by 35 publications

(36 citation statements)

References 34 publications

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“…Genetic relatedness between individuals was inferred from amplified fragment length polymorphism (AFLP) markers. These markers have proven highly informative in studies of plant population genetic structure and history (15,16).…”

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confidence: 99%

Genetic introgression as a potential to widen a species' niche: Insights from alpine Carex curvula

Choler

Erschbamer

Tribsch

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

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Understanding what causes the decreasing abundance of species at the margins of their distributions along environmental gradients has drawn considerable interest, especially because of the recent need to predict shifts in species distribution patterns in response to climatic changes. Here, we address the ecological range limit problem by focusing on the sedge, Carex curvula, a dominant plant of high-elevation grasslands in Europe, for which two ecologically differentiated but crosscompatible taxa have been described in the Alps. Our study heuristically combines an extensive phytoecological survey of alpine plant communities to set the niche attributes of each taxon and a population genetic study to assess the multilocus genotypes of 177 individuals sampled in typical and marginal habitats. We found that ecological variation strongly correlates with genetic differentiation. Our data strongly suggest that ecologically marginal populations of each taxon are mainly composed of individuals with genotypes resulting from introgressive hybridization. Conversely, no hybrids were found in typical habitats, even though the two taxa were close enough to crossbreed. Thus, our results indicate that genotype integrity is maintained in optimal habitats, whereas introgressed individuals are favored in marginal habitats. We conclude that gene flow between closely related taxa might be an important, although underestimated, mechanism shaping species distribution along gradients.alpine flora ͉ evolutionary ecology ͉ introgressive hybridization ͉ local adaptation ͉ niche theory

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confidence: 99%

Genetic introgression as a potential to widen a species' niche: Insights from alpine Carex curvula

Choler

Erschbamer

Tribsch

et al. 2003

Proc. Natl. Acad. Sci. U.S.A.

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“…The extent of variation detected by this technique has allowed for finescale assessment of both the inter-and intraspecific distribution of variation. For instance, Vijverberg et al (2000) used AFLP data to study inter-and intraspecific variation in closely related species in Microseris (Asteraceae). Giannasi et al (2001) determined species limits in a group of closely related snakes in the genus Trimeresurus (Viperidae) and Parsons and Shaw (2001) assessed species boundaries and genetic diversity among Hawaiian crickets of the genus Laupala (Gryllidae).…”

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confidence: 99%

Species Delimitation and the Origin of Populations in Island Representatives of Phylica (Rhamnaceae)

et al. 2003

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Abstract. Relationships between the closely related island species of Phylica (Rhamnaceae) and a mainland species, P. paniculata, were elucidated using amplified fragment length polymorphisms (AFLPs). Parsimony, neighbor joining, and principal coordinate (PCO) analyses indicated that each of the species studied is distinct. AFLPs were also useful in elucidating the genetic relationships and possible infraspecific origins of different island populations in the Atlantic and Indian Oceans. Phylica nitida on Réunion is likely to have been derived from P. nitida on Mauritius. Although the sampling on New Amsterdam is not extensive, the data are also consistent with the hypothesis that P. arborea on New Amsterdam was derived from a single colonization of P. arborea from Gough Island. Similarly, the Gough Island population appears to have been derived from a single colonization event, but it is so distinct from those on Tristan da Cunha, that there may have been two separate dispersals to Gough and Tristan/Nightingale from different lines of the mainland progenitor. There is also evidence of a recolonization from Gough to Tristan da Cunha. Thus, Phylica arborea is capable of repeated long distance dispersal, up to 8000 km, even though the fruits and seeds are not of a type normally associated with this phenomenon.

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“…Phylogenetic analyses based on chloroplast markers show three geographically correlated clades within M. lanceolata that all include individuals of both ecotypes, suggesting parallel independent origins [89]. Nuclear AFLP markers also support this hypothesis, as genetic distance among populations correlates strongly with geographic distance rather than ecotype identity [90]. This pattern may be explained by a single origin and dispersal of each ecotype followed by significant local hybridization between ecotypes, but Vijverberg et al [90] emphasize that these populations have managed to maintain their ecotypic characteristics even in the face of gene flow.…”

Section: A11 Eucalyptus Globulusmentioning

confidence: 84%

“…Nuclear AFLP markers also support this hypothesis, as genetic distance among populations correlates strongly with geographic distance rather than ecotype identity [90]. This pattern may be explained by a single origin and dispersal of each ecotype followed by significant local hybridization between ecotypes, but Vijverberg et al [90] emphasize that these populations have managed to maintain their ecotypic characteristics even in the face of gene flow. Given this and evidence that crosses between and within ecotypes are viable, it seems likely that selection is acting in parallel to maintain or recreate fixed differences between these populations.…”

Section: A11 Eucalyptus Globulusmentioning

confidence: 99%

Parallel Ecological Speciation in Plants?

Ostevik

Moyers

Owens

et al. 2012

International Journal of Ecology

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Populations that have independently evolved reproductive isolation from their ancestors while remaining reproductively cohesive have undergone parallel speciation. A specific type of parallel speciation, known as parallel ecological speciation, is one of several forms of evidence for ecology's role in speciation. In this paper we search the literature for candidate examples of parallel ecological speciation in plants. We use four explicit criteria (independence, isolation, compatibility, and selection) to judge the strength of evidence for each potential case. We find that evidence for parallel ecological speciation in plants is unexpectedly scarce, especially relative to the many well-characterized systems in animals. This does not imply that ecological speciation is uncommon in plants. It only implies that evidence from parallel ecological speciation is rare. Potential explanations for the lack of convincing examples include a lack of rigorous testing and the possibility that plants are less prone to parallel ecological speciation than animals.

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Incipient adaptive radiation of New Zealand and Australian Microseris (Asteraceae): an amplified fragment length polymorphism (AFLP) study

Cited by 35 publications

References 34 publications

Genetic introgression as a potential to widen a species' niche: Insights from alpine Carex curvula

Genetic introgression as a potential to widen a species' niche: Insights from alpine Carex curvula

Species Delimitation and the Origin of Populations in Island Representatives of Phylica (Rhamnaceae)

Parallel Ecological Speciation in Plants?

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