What can molecular markers tell us about the glacial and postglacial histories of European birches?

Jadwiszczak, Katarzyna A.

doi:10.14214/sf.923

Cited by 12 publications

(18 citation statements)

References 61 publications

(88 reference statements)

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“…Two major haplotypes were found throughout Europe in all species, one dominating in western Europe and one in eastern Europe. This pattern suggests two main waves of postglacial recolonization, both from intermediate latitudes, but from different directions (Palmé ; Jadwiszczak ). However, the extensive pDNA haplotype sharing inferred to be due to hybridization, in particular among B. pendula , B. pubescens and B. nana (Palmé et al .…”

Section: Introductionmentioning

confidence: 92%

Comparative analyses of plastid and AFLP data suggest different colonization history and asymmetric hybridization between Betula pubescens and B. nana

Eidesen¹,

Alsos

Brochmann

2015

Molecular Ecology

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Birches (Betula spp.) hybridize readily, confounding genetic signatures of refugial isolation and postglacial migration. We aimed to distinguish hybridization from range-shift processes in the two widespread and cold-adapted species B. nana and B. pubescens, previously shown to share a similarly east-west-structured variation in plastid DNA (pDNA). We sampled the two species throughout their ranges and included reference samples of five other Betula species and putative hybrids. We analysed 901 individual plants using mainly nuclear high-resolution markers (amplified fragment length polymorphisms; AFLPs); a subset of 64 plants was also sequenced for two pDNA regions. Whereas the pDNA variation as expected was largely shared between B. nana and B. pubescens, the two species were distinctly differentiated at AFLP loci. In B. nana, both the AFLP and pDNA results corroborated the former pDNA-based hypothesis that it expanded from at least two major refugia in Eurasia, one south of and one east of the North European ice sheets. In contrast, B. pubescens showed a striking lack of geographic structuring of its AFLP variation. We identified a weak but significant increase in nuclear (AFLP) gene flow from B. nana into B. pubescens with increasing latitude, suggesting hybridization has been most frequent at the postglacial expansion front of B. pubescens and that hybrids mainly backcrossed to B. pubescens. Incongruence between pDNA and AFLP variation in B. pubescens can be explained by efficient expansion from a single large refugium combined with leading-edge hybridization and plastid capture from B. nana during colonization of new territory already occupied by this more cold-tolerant species.

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Section: Introductionmentioning

confidence: 92%

Comparative analyses of plastid and AFLP data suggest different colonization history and asymmetric hybridization between Betula pubescens and B. nana

Eidesen¹,

Alsos

Brochmann

2015

Molecular Ecology

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“…В этой связи интересна точка зрения ряда ав-торов [32,67,96], согласно которой растения, которые были в состоянии изменить свое строение и жизненные функции, сохранились в рефугиях и некоторые из них дали начало новым видам. Среди наиболее древних ре-ликтов ледникового времени, например, в Скандина-вии Н.И.…”

Section: природно-климатические особенности макрорегионаunclassified

“…1). Территория повторно заселялась за счет растений, преадаптированных к сходным суровым условиям (альпийские виды из прилегающих горных обла-стей) [67,87] или же сохранившихся видов из аналогичных экологических ниш прошлых эпох [39]. В дальнейшем пе-риодически происходили изменения ареалов произраста-ющих здесь видов растений.…”

Section: гибридная зона (зоны высокой концентрации близкородственных unclassified

“…Прогресс, наблю-даемый за последние два десятилетия в области молеку-лярной филогеографии, открывает новые возможности для реконструкции миграционных путей отдельных видов растений в позднеледниковье [67,76,78,79]. Для этого, как правило, используется микросателлитный метод ана-лиза хлоропластной ДНК, которая у березы, как и у дру-гих лиственных видов, передается только по материнской линии и позволяет выделить в общей популяционной вы-борке группы генетически родственных деревьев.…”

Section: гибридная зона (зоны высокой концентрации близкородственных unclassified

“…При этом установлено, что гаплотип А преобладает в по-пуляциях березы пушистой, березы повислой и березы карликовой в западной и северо-западной части Европы [78,79], а гаплотип С -в основном в восточной и юго-восточной [67,76]. Было показано, что одним из главных факторов, определяющих их распространение, является климатический.…”

Section: B)unclassified

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Genesis of the karelian birch. an ecogenetic hypothesis

Vetchinnikova

Титов

2016

Ecological genetics

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Relying on the analysis of data from the literature and own findings the authors develop and specify the previously postulated ecological-genetic hypothesis of the curly birch origins, which is based on the concept of interactions between specific natural-climatic factors and conditions in the north-western continental Europe during so-called Little Ice Age (LIA), the high genetic polymorphism, and the adaptive nature of many anatomical-morphological traits and physiological-biochemical characteristics of the representatives of the genus Betula L. growing in the area. The various facts and observations in favour of the ecological-genetic hypothesis of the origins of curly birch are reported.

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Phylogeography and paleodistribution models of a widespread birch (Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

Chen

Lou

2019

Ecology and Evolution

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Widespread tree species cover large geographical areas and play important roles in various vegetation types. Understanding how these species responded to historical climatic changes is important for understanding community assembly mechanisms with evolutionary and conservation implications. However, the location of refugial areas and postglacial history of widespread trees in East Asia remain poorly known. We combined microsatellite data (63 populations, 1756 individuals) and ecological niche modeling to examine the range‐wide population diversity, genetic structure, and historical demography of a pioneer tree species, Asian white birch ( Betula platyphylla Suk.) across East Asia. We found a north‐to‐south trend of declining genetic diversity and five clusters, corresponding to geographical regions. Different clusters were inferred to have diverged through Pleistocene climatic oscillations and have different expansion routes, leading to genetic admixture in some populations. Ecological niche models indicated that the distribution of B. platyphylla during the last glacial maximum still had a large latitude span with slight shifts toward southeast, and northern populations had more variable distribution ranges than those in the south during later climatic oscillations. Our results reflect the relatively stable distribution through the last glacial–interglacial cycles and recent multidirectional expansion of B. platyphylla , providing new hypotheses for the response pattern of widespread tree species to climate change. The gradual genetic pattern from northeast to southwest and alternative distribution dynamics possibly resulted from environmental differences caused by latitude and topographic heterogeneity.

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What can molecular markers tell us about the glacial and postglacial histories of European birches?

Cited by 12 publications

References 61 publications

Comparative analyses of plastid and AFLP data suggest different colonization history and asymmetric hybridization between Betula pubescens and B. nana

Comparative analyses of plastid and AFLP data suggest different colonization history and asymmetric hybridization between Betula pubescens and B. nana

Genesis of the karelian birch. an ecogenetic hypothesis

Phylogeography and paleodistribution models of a widespread birch (Betula platyphylla Suk.) across East Asia: Multiple refugia, multidirectional expansion, and heterogeneous genetic pattern

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