Ecological trade-offs drive phenotypic and genetic differentiation of Arabidopsis thaliana in Europe.

Autor: Bastias CC; CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France. crbasc@gmail.com.; Área de Ecología, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Córdoba, Spain. crbasc@gmail.com., Estarague A; CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France.; LEPSE, Univ Montpellier, INRAE, Institut Agro Montpellier, Montpellier, France., Vile D; LEPSE, Univ Montpellier, INRAE, Institut Agro Montpellier, Montpellier, France., Gaignon E; CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France., Lee CR; Institute of Ecology and Evolutionary Biology & Institute of Plant Biology, National Taiwan University, Taipei, Taiwan., Exposito-Alonso M; Department of Plant Biology, Carnegie Institution for Science, Stanford, CA, USA., Violle C; CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France., Vasseur F; CEFE, Univ Montpellier, CNRS, EPHE, IRD, Montpellier, France.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2024 Jun 18; Vol. 15 (1), pp. 5185. Date of Electronic Publication: 2024 Jun 18.
DOI: 10.1038/s41467-024-49267-0
Abstrakt: Plant diversity is shaped by trade-offs between traits related to competitive ability, propagule dispersal, and stress resistance. However, we still lack a clear understanding of how these trade-offs influence species distribution and population dynamics. In Arabidopsis thaliana, recent genetic analyses revealed a group of cosmopolitan genotypes that successfully recolonized Europe from its center after the last glaciation, excluding older (relict) lineages from the distribution except for their north and south margins. Here, we tested the hypothesis that cosmopolitans expanded due to higher colonization ability, while relicts persisted at the margins due to higher tolerance to competition and/or stress. We compared the phenotypic and genetic differentiation between 71 European genotypes originating from the center, and the south and north margins. We showed that a trade-off between plant fecundity and seed mass shapes the differentiation of A. thaliana in Europe, suggesting that the success of the cosmopolitan groups could be explained by their high dispersal ability. However, at both north and south margins, we found evidence of selection for alleles conferring low dispersal but highly competitive and stress-resistance abilities. This study sheds light on the role of ecological trade-offs as evolutionary drivers of the distribution and dynamics of plant populations.
(© 2024. The Author(s).)
Databáze: MEDLINE
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