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@article{2252806,
author = {Wos, Guillaume and Arc, Erwann and Huelber, Karl and Konecna, Veronika and Knotek, Adam and Pozarova, Doubravka and Bertel, Clara and Kaplenig, Dominik and Malík Mandáková, Terezie and Neuner, Gilbert and Schoenswetter, Peter and Kranner, Ilse and Kolar, Filip},
article_number = {10},
doi = {http://dx.doi.org/10.1111/1365-2745.13961},
keywords = {alpine environment; Arabidopsis arenosa; evolutionary ecology; gene flow; local adaptation; parallel evolution; ploidy; transplantation experiment},
language = {eng},
issn = {0022-0477},
journal = {Journal of Ecology},
title = {Parallel local adaptation to an alpine environment in Arabidopsis arenosa},
url = {https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2745.13961},
volume = {110},
year = {2022}
}
TY - JOUR
ID - 2252806
AU - Wos, Guillaume - Arc, Erwann - Huelber, Karl - Konecna, Veronika - Knotek, Adam - Pozarova, Doubravka - Bertel, Clara - Kaplenig, Dominik - Malík Mandáková, Terezie - Neuner, Gilbert - Schoenswetter, Peter - Kranner, Ilse - Kolar, Filip
PY - 2022
TI - Parallel local adaptation to an alpine environment in Arabidopsis arenosa
JF - Journal of Ecology
VL - 110
IS - 10
SP - 2448-2461
EP - 2448-2461
PB - Wiley
SN - 00220477
KW - alpine environment
KW - Arabidopsis arenosa
KW - evolutionary ecology
KW - gene flow
KW - local adaptation
KW - parallel evolution
KW - ploidy
KW - transplantation experiment
UR - https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2745.13961
N2 - Parallel local adaptation, that is, when distinct genetic lineages independently adapt to the same selective environment, provides strong evidence for the action of natural selection. A few cases of parallel local adaptation were reported in plants but underlying mechanisms promoting or preventing the parallel response, such as the balance between migration and selection, were rarely quantified. Here, we conducted a transplant experiment to test whether distinct foothill-alpine population pairs of Arabidopsis arenosa exhibited similar adaptive responses to a contrasting alpine environment. We further investigated selection and migration patterns in these populations. Seedlings of 16 foothill and alpine populations of A. arenosa from four distinct mountain regions (one occupied by diploid and three by tetraploid populations) were transplanted into one low- and one high-elevation site. We recorded fitness proxies over two growing seasons to test whether the elevation-of-origin advantage was manifested in the same way across the four regions of origin. Then, we quantified the strength of selection on the traits at each transplantation site and used coalescent simulations to estimate past gene flow intensity between each pair of foothill and alpine populations in each region. We demonstrated that the four pairs of populations exhibited similar adaptive responses to elevation difference in terms of survival, number of flowering plants, stem height and accumulation of above-ground dry biomass; the other traits (rosette size, number of leaves, stems and flowers) exhibited rather regional-specific patterns. In addition, we found minor effects of ploidy level on the fitness proxies recorded. Our selection and migration analysis revealed that parallel local adaptation was probably achieved by differential selective pressure at low versus high elevation in combination with lack or limited gene flow between foothill and alpine populations. Synthesis. We show that the previously documented strong morphological and genetic distinctness of alpine A. arenosa compared to their foothill counterparts, which has been hypothesized to be driven by natural selection, is indeed mirrored in fitness differences consistent with parallel local adaptation. Our results provide experimental support for the repeatability of adaptive evolution and highlight the prominent role of divergent selection.
ER -
WOS, Guillaume, Erwann ARC, Karl HUELBER, Veronika KONECNA, Adam KNOTEK, Doubravka POZAROVA, Clara BERTEL, Dominik KAPLENIG, Terezie MALÍK MANDÁKOVÁ, Gilbert NEUNER, Peter SCHOENSWETTER, Ilse KRANNER and Filip KOLAR. Parallel local adaptation to an alpine environment in Arabidopsis arenosa. \textit{Journal of Ecology}. Wiley, 2022, vol.~110, No~10, p.~2448-2461. ISSN~0022-0477. Available from: https://dx.doi.org/10.1111/1365-2745.13961.
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