Phylogeography of the Narrow Endemic, &lt;I&gt;Helenium virginicum&lt;/I&gt; (Asteraceae), Based upon ITS Sequence Comparisons

Simurda, Maryanne C.; Marshall, David C.; Knox, John S.

doi:10.1600/036364405775097725

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…2002; Schönswetter et al . 2004, 2006; Tribsch 2004; Schönswetter & Tribsch 2005; Simurda et al . 2005; Skrede et al .…”

Section: Introductionmentioning

confidence: 99%

“…Molecular analysis of DNA represents a good possibility for studying colonization routes of species. Up to now, the main interest in reconstructing the different colonization routes of plants after glaciation by means of molecular methods focused on the one hand on tree species (Bennett et al 1991;Magri et al 2006), and on the other hand, on glacial relict endemics in the Alps and in Fennoscandia (Tremblay & Schoen 1999;Despres et al 2002;Malm & Prentice 2002;Reisch et al 2002;Schönswetter et al 2004Schönswetter et al , 2006Tribsch 2004;Schönswetter & Tribsch 2005;Simurda et al 2005;Skrede et al 2006;Reisch 2007). A variety of these studies have shown that the distribution of genetic variation among populations is not only determined by contemporary but also by historical processes of genetic drift, gene flow and migration.…”

Section: Introductionmentioning

confidence: 99%

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Genetic variation of Eryngium campestre L. (Apiaceae) in Central Europe

2008

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In Germany, Eryngium campestre is restricted to dry habitats along the rivers Rhine and Elbe and to a few areas in Central Germany. This distribution pattern is usually regarded as a typical pattern of postglacial immigration. In the present study, we investigated whether these two geographically distinct distribution areas are genetically differentiated and whether conclusions can be drawn regarding colonization history. To analyse the phylogeographic structure of E. campestre in Central Europe, 278 individuals from 29 populations within Germany and from further reference populations within Europe were analysed. We applied amplified fragment length polymorphisms to examine their genetic relatedness. Our analyses revealed three groups: a Mediterranean group additionally including two Rhine populations; a Rhine-Main group which further includes the westernmost population from the central German dry area; and one group which includes all eastern populations. Our results show that the two geographically distinct areas are genetically differentiated. As genetic diversity within the Elbe populations is very low, we conclude that this area, which was strongly affected through the late glacial maximum, was colonized relatively recently. High genetic diversity in the Rhine populations indicates a contact zone where lineages of different origin met. This would imply that today's patterns of genetic variation were caused through glacial range contractions and expansions. The present study is one of the first studies that deal with the postglacial distribution pattern of a dry grassland plant species in Central Europe and the results suggest that a survival of E. campestre at least during the Dryas cold stage might be possible.

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“…2002; Schönswetter et al . 2004, 2006; Tribsch 2004; Schönswetter & Tribsch 2005; Simurda et al . 2005; Skrede et al .…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Genetic variation of Eryngium campestre L. (Apiaceae) in Central Europe

2008

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Nuclear and chloroplast DNA-based phylogenies of Chrysanthemoides Tourn. ex Medik. (Calenduleae; Asteraceae) reveal extensive incongruence and generic paraphyly, but support the recognition of infraspecific taxa in C. monilifera

Barker¹,

Howis²,

Nordenstam³

et al. 2009

South African Journal of Botany

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Recent Origin of a Range‐Restricted Species With Subsequent Introgression in its Widespread Congener in the Phyteuma spicatum Group (Campanulaceae)

Larsson,

Šarhanová,

Paun

et al. 2024

Molecular Ecology

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Understanding the causes of restricted geographic distributions is of major interest to evolutionary and conservation biologists. Inferring historical factors has often relied on ad hoc interpretations of genetic data, and hypothesis testing within a statistical framework under different demographic scenarios remains underutilised. Using coalescent modelling on RAD‐sequencing data, we (i) test hypotheses about the origin of Phyteuma gallicum (Campanulaceae), a range‐restricted endemic of central France sympatric with its widespread congener Ph. spicatum, and (ii) date its origin, irrespective of its mode of origin, to test the hypothesis that the restricted range is due to a recent time of origin. The best supported model of origin is one of a dichotomous split of Ph. gallicum, confirmed as distinct species, and the Central European Ph. nigrum with subsequent gene flow between Ph. gallicum and Ph. spicatum. The split of Ph. gallicum and Ph. nigrum is estimated at 45–55,000 years ago. Coalescent modelling on genomic data not only clarified the mode of origin (dichotomous speciation instead of a previously hypothesised hybridogenic origin) but also identified recency of speciation as a sufficient, although likely not the sole, factor to explain the restricted distribution range. Coalescent modelling strongly improves our understanding of the evolution of range‐restricted species that are frequently of conservation concern, as is the case for Ph. gallicum.

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Phylogeography of the Narrow Endemic, <I>Helenium virginicum</I> (Asteraceae), Based upon ITS Sequence Comparisons

Cited by 7 publications

References 49 publications

Genetic variation of Eryngium campestre L. (Apiaceae) in Central Europe

Genetic variation of Eryngium campestre L. (Apiaceae) in Central Europe

Nuclear and chloroplast DNA-based phylogenies of Chrysanthemoides Tourn. ex Medik. (Calenduleae; Asteraceae) reveal extensive incongruence and generic paraphyly, but support the recognition of infraspecific taxa in C. monilifera

Recent Origin of a Range‐Restricted Species With Subsequent Introgression in its Widespread Congener in the Phyteuma spicatum Group (Campanulaceae)

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