Northern glacial refugia and altitudinal niche divergence shape genome-wide differentiation in the emerging plant model Arabidopsis arenosa
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985939%3A_____%2F16%3A00464283" target="_blank" >RIV/67985939:_____/16:00464283 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/16:10328956
Result on the web
<a href="http://dx.doi.org/10.1111/mec.13721" target="_blank" >http://dx.doi.org/10.1111/mec.13721</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/mec.13721" target="_blank" >10.1111/mec.13721</a>
Alternative languages
Result language
angličtina
Original language name
Northern glacial refugia and altitudinal niche divergence shape genome-wide differentiation in the emerging plant model Arabidopsis arenosa
Original language description
The tropical Andes represent one of the world's biodiversity hot spots, but the evolutionary drivers generating their striking species diversity still remain poorly understood. In the treeless high-elevation Andean environments, Pleistocene glacial oscillations and niche differentiation are frequently hypothesized diversification mechanisms; however, sufficiently densely sampled population genetic data supporting this are still lacking. Here, we reconstruct the evolutionary history of Loricaria (Asteraceae), a plant genus endemic to the Andean treeless alpine zone, based on comprehensive population-level sampling of 289 individuals from 67 populations across the entire distribution ranges of its northern Andean species. Partly incongruent AFLP and plastid DNA markers reveal that the distinct genetic structure was shaped by a complex interplay of biogeography (spread along and across the cordilleras), history (Pleistocene glacial oscillations) and local ecological conditions. While plastid variation documents an early split or colonization of the northern Andes by at least two lineages, one of which further diversified, a major split in the AFLP data correlate with altitudinal ecological differentiation. This suggests that niche shifts may be important drivers of Andean diversification not only in forest-alpine transitions, but also within the treeless alpine zone itself. The patterns of genetic differentiation at the intraspecific level reject the hypothesized separation in spatially isolated cordilleras and instead suggest extensive gene flow among populations from distinct mountain chains. Our study highlights that leveraging highly variable markers against extensive population-level sampling is a promising approach to address mechanisms of rapid species diversifications.
Czech name
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Czech description
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Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EF - Botany
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/GAP506%2F12%2F0668" target="_blank" >GAP506/12/0668: Evolutionary patterns in polyploid complexes: congruent or discordant histories in three examples from the Brassicaceae family?</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Molecular Ecology
ISSN
0962-1083
e-ISSN
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Volume of the periodical
25
Issue of the periodical within the volume
16
Country of publishing house
GB - UNITED KINGDOM
Number of pages
21
Pages from-to
3929-3949
UT code for WoS article
000381578200011
EID of the result in the Scopus database
2-s2.0-84981736399