Cytoplasmic DNA variation does not support a recent contribution of Pinus sylvestris L. from the Caucasus to the main range

Semerikov, Nikolay V.; Петрова, И. В.; Sannikov, S. N.; Семерикова, С. А.; Tashev, Alexander; Lascoux, Martin; Семериков, В. Л.

doi:10.1007/s11295-020-01458-8

Cited by 12 publications

(9 citation statements)

References 51 publications

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“…The British Isles were largely ice‐covered during the LGM and the contemporary population is certainly a product of postglacial establishment. However, in other molecular data sets, there is no sign of the severe founder effect that would be expected by a rapid wave of migration from a small source population (Wachowiak et al, 2011; Sejrup et al, 2016; Semerikov et al, 2020). Some heterogeneity of the western populations in Scotland compared to other locations was shown based on mtDNA RFLP variation (Sinclair et al, 1998) and, although no differentiation between Scottish and mainland European populations was observed at the cp SSR loci, a unique, low‐frequency allele was identified in some western sites (Provan et al, 1998).…”

Section: Discussionmentioning

confidence: 97%

“…Such endemic mitotypes may represent new variants or remnants of isolated stands that survived locally, but did not contribute to the major recolonization events. Recent mtDNA and cp DNA analyses suggested that the eastern Black Sea region, including Crimea, Caucasus, and Asia Minor, has a distinct origin and might have been isolated from the populations of the main range for a long time (over hundreds of thousands of years, Semerikov et al, 2020; Dering et al, 2021). Our data show that populations across a large area of the Black Sea basin, including Crimea, western Ukraine, Romania, Bulgaria, and western Russia, share haplotypes that were not observed elsewhere in our sample.…”

Section: Discussionmentioning

confidence: 99%

“…However, due to the low spatial resolution of these markers, population structure has only been resolved at a broad scale (Soranzo et al, 2000;Naydenov et al, 2007;Pyhäjärvi et al, 2008;Wójkiewicz et al, 2016a;Dering et al, 2017;Semerikov et al, 2018;Zimmer & Sønstebø, 2018). Southern refugial populations were certainly present and are consistently evident in marker data sets as locations of distinctive mitotypes in Iberia, Italy, and Turkey (Cheddadi et al, 2006;Dering et al, 2017;Donnelly et al, 2017;Semerikov et al, 2020). North of these locations, little genetic structure is evident, as much of western Europe was found to be dominated by a single mitotype, while a distinctive group of populations was evident from elevated frequencies of a different mitotype in eastern Sweden, Finland, and western Russia (Sinclair et al, 1999;Soranzo et al, 2000;Cheddadi et al, 2006;Naydenov et al, 2007;Pyhäjärvi et al, 2008;Buchovska et al, 2013;Dering et al, 2017;Semerikov et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

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Phylogeography of Scots pine in Europe and Asia based on mtDNA polymorphisms

Wachowiak

Weronika

Perry

et al. 2022

J of Sytematics Evolution

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We analyzed mitochondrial DNA polymorphisms to search for evidence of the genetic structure and patterns of admixture in 124 populations (N = 1407 trees) across the distribution of Scots pine in Europe and Asia. The markers revealed only a weak population structure in Central and Eastern Europe and suggested postglacial expansion to middle and northern latitudes from multiple sources. Major mitotype variants include the remnants of Scots pine at the north-western extreme of the distribution in the Scottish Highlands; two main variants (western and central European) that contributed to the contemporary populations in Norway and Sweden; the central-eastern European variant present in the Balkan region, Finland, and Russian Karelia; and a separate one common to most eastern European parts of Russia and western Siberia. We also observe signatures of a distinct refugium located in the northern parts of the Black Sea basin that contributed to the patterns of genetic variation observed in several populations in the Balkans, Ukraine, and western Russia. Some common haplotypes of putative ancient origin were shared among distant populations from Europe and Asia, including the most southern refugial stands that did not participate in postglacial recolonization of northern latitudes. The study indicates different genetic lineages of the species in Europe and provides a set of genetic markers for its finer-scale population history and divergence inference.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Phylogeography of Scots pine in Europe and Asia based on mtDNA polymorphisms

Wachowiak

Weronika

Perry

et al. 2022

J of Sytematics Evolution

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“…This trend does not preclude migration in the opposite direction. For example, Pinus sylvestris apparently dispersed primarily from western Europe (Semerikov et al ., 2020 ).…”

Section: Discussionmentioning

confidence: 99%

Teasing apart the joint effect of demography and natural selection in the birth of a contact zone

Milesi

Tiret

et al. 2022

New Phytologist

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Summary Vast population movements induced by recurrent climatic cycles have shaped the genetic structure of plant species. During glacial periods species were confined to low‐latitude refugia from which they recolonized higher latitudes as the climate improved. This multipronged recolonization led to many lineages that later met and formed large contact zones. We utilize genomic data from 5000 Picea abies trees to test for the presence of natural selection during recolonization and establishment of a contact zone in Scandinavia. Scandinavian P. abies is today made up of a southern genetic cluster originating from the Baltics, and a northern one originating from Northern Russia. The contact zone delineating them closely matches the limit between two major climatic regions. We show that natural selection contributed to its establishment and maintenance. First, an isolation‐with‐migration model with genome‐wide linked selection fits the data better than a purely neutral one. Second, many loci show signatures of selection or are associated with environmental variables. These loci, regrouped in clusters on chromosomes, are often related to phenology. Altogether, our results illustrate how climatic cycles, recolonization and selection can establish strong local adaptation along contact zones and affect the genetic architecture of adaptive traits.

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“…Furthermore, a major part of the current geographic distribution of Scots pine in eastern European Plains and Asia contained ice‐free regions during LGM (Seppä, 1996; Hughes et al, 2016) and thus could contribute to the maintenance of species genetic resources and diversity (Svendsen et al, 2004; Buchovska et al, 2013). However, the potential role of these regions as possible expansion centers that contribute to the recolonization of Central Europe and Fennoscandia after the retreat of the glaciers remains largely unknown (Prus‐Głowacki et al, 2012; Kyrkjeeide et al, 2014; Semerikov et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Mid‐Pleistocene events influenced the current spatial structure of genetic diversity in Scots pine (Pinus sylvestris L.)

Łabiszak,

Wachowiak

2023

J of Sytematics Evolution

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Scots pine (Pinus sylvestris L.) is one of the most important tree species of the temperate and boreal zones in Eurasia. Its wide distribution range and current patterns of genetic variation have been influenced by Quaternary climatic oscillations and the demographic processes connected to them. In order to better understand the relationship between evolutionary history and demographic factors in a widespread species with a large genome, we used the single‐nucleotide polymorphism (SNP) array to genotype thousands of SNP markers across 62 natural populations (N = 686 trees) of Scots pine in Eurasia. This provides the largest range‐wide SNPs' genetic diversity assessment of Scots pine to date. Our findings show evidence of past admixture events between genetic clusters that were retained despite the potential for effective pollen‐mediated gene flow across the species' distribution range. We also examined the contemporary population structure of the species and analyzed the range‐wide genetic diversity patterns. Phylogenetic analyses and demographic modeling suggest that the observed divergence patterns between genetic lineages likely predate the last glaciation events. Two of the most distinctive groups are represented by trees from the eastern parts of Fennoscandia and Eastern Russia, which have remained separated since the mid‐Pleistocene. The patterns of genetic variation also confirm the dual colonization of Fennoscandia and the existence of an admixture zone in Central Europe that was formed during multiple waves of postglacial recolonization. This study provides insights into the genetic relationships of Scots pine populations from Europe and Asia and offers a more comprehensive understanding of the species' history.

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Cytoplasmic DNA variation does not support a recent contribution of Pinus sylvestris L. from the Caucasus to the main range

Cited by 12 publications

References 51 publications

Phylogeography of Scots pine in Europe and Asia based on mtDNA polymorphisms

Phylogeography of Scots pine in Europe and Asia based on mtDNA polymorphisms

Teasing apart the joint effect of demography and natural selection in the birth of a contact zone

Mid‐Pleistocene events influenced the current spatial structure of genetic diversity in Scots pine (Pinus sylvestris L.)

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