Adapting through glacial cycles: insights from a long‐lived tree (<i>Taxus baccata</i>)

Mayol, María; Riba, Miquel; González‐Martínez, Santiago C.; Bagnoli, Francesca; Beaulieu, Jacques‐Louis de; Berganzo, Elisa; Burgarella, Concetta; Dubreuil, Marta; Krajmerová, Diana; Paule, Ladislav; Romšáková, Ivana; Vettori, Cristina; Vincenot, Lucie; Vendramin, Giovanni G.

doi:10.1111/nph.13496

Cited by 73 publications

(82 citation statements)

References 84 publications

(88 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, the genetic and distributional difference among populations should be paid more attention in relation to species conservation. After the glacial periods, migrations from separate refugia would meet in contact zones forming high genetic diversity there (Havrdova et al, ; Mayol et al, ). As we discussed above, B. platyphylla showed high genetic diversity in north China because of admixture.…”

Section: Discussionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

show abstract

“…In this context, we note a recent finding by Mayol et al . () that environmental adaptation during interglacials might have strongly shaped the present‐day genetic structure of a temperate conifer. Here, a very similar result was obtained for Asian butternuts, with the aid of isolation by environment analysis.…”

Section: Discussionmentioning

confidence: 99%

Phylogeographic breaks within Asian butternuts indicate the existence of a phytogeographic divide in East Asia

2015

View full text Add to dashboard Cite

Summary East Asia has been hypothesized to be subdivided into two distinct northern and southern areas, separated by a band of dry climate that was far more severe in the early Tertiary but still exists today. However, this biogeographic hypothesis has rarely been tested using a molecular phylogeographic approach. We genotyped 70 populations throughout the distributional range of Asian butternuts (Juglans section Cardiocaryon) using eight chloroplast DNA regions, one single‐copy nuclear gene, and 17 nuclear microsatellite loci, supplemented with paleodistribution modeling of the major genetic clades. The genetic data consistently identified two clades, one northern, comprising Juglans mandshurica and Juglans ailantifolia, and one southern, comprising Juglans cathayensis. The two clades diverged through climate‐induced vicariance of an ancestral northern range during the mid‐Miocene and remained mostly separate thereafter, with geographical isolation of the Japanese Islands and refugial isolation or secondary contacts in the late Pleistocene producing further subdivision within the northern clade. But beyond all that, we also discovered a role of environmental adaptation in maintaining and/or reinforcing the north–south divergence. Asian butternuts offer a strong case for the existence of a biogeographic divide between the northern and southern parts of East Asia during the Neogene and into the Pleistocene.

show abstract

“…Influence of climate, deer, dioecy, and excessive shading were the subject of many studies (e.g Thomas & Polwart, 2003;Farris & Filigheddu 2008;Iszkulo et al, 2009;Linares, 2013;Garbarino et al, 2015). Temperature is the primary determinant of northern and eastern limits of T. baccata range (Thomas & Polwart, 2003;Mayol et al, 2015). Yew individuals that are not effectively protected against deer have no chance of survival (Mysterud & Østbye, 2004;Perrin et al, 2006;Dhar et al, 2008;Iszkuło et al, 2014).…”

Section: Taxus Baccata Declining In North and Central Europementioning

confidence: 99%

Postglacial migration dynamics helps to explain current scattered distribution of Taxus baccata

Iszkuło¹,

Pers‐Kamczyc²,

Nalepka³

et al. 2016

Dendrobiology

View full text Add to dashboard Cite

Taxus baccata L. has a scattered distribution and the decline of yew woodlands is observed across the entire species range. Passively protected populations in the central and northern part of their distribution are declining without human intervention. However, the establishment of new yew populations is observed in habitats that have been significantly transformed by humans. The following question need to be answered: why do yews find better in environmental conditions that have been strongly modified by humans compared to natural systems? The Quaternary history might be the key to understand the current yew situation. As suggested by palaeobotanical studies, pollen of T. baccata was observed at optima of the interglacials, but in subsequent periods, it has been displaced by that of other shade-tolerant species. Pollen diagrams indicate that after the last glaciation, the yew did not appear earlier than other shade-tolerant species and did not have the opportunity to become common in occurrence, as in previous interglacial periods. As a result, yews occur only as relict populations within environmental islands where the competition with other shade-tolerant species is low. The negative human impact on yew is well-documented, but limitations resulting from the biology of this species are also very important. T. baccata is a species whose current scattered distribution may explain the Quaternary history. Yew situation is better in artificial conditions because people reduce competition from other trees species and deer pressure. Possible positive impact of human on yew distribution in the past is also discussed. The current biological condition of this species suggests the need for active protection.

show abstract

Adapting through glacial cycles: insights from a long‐lived tree (Taxus baccata)

Cited by 73 publications

References 84 publications

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

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

Phylogeographic breaks within Asian butternuts indicate the existence of a phytogeographic divide in East Asia

Postglacial migration dynamics helps to explain current scattered distribution of Taxus baccata

Contact Info

Product

Resources

About