- Background: Many fungal species occur across a variety of habitats. Particularly lichens, fungi forming symbioses with photosynthetic partners, have evolved remarkable tolerances for environmental extremes. Despite their ecological importance and ubiquity, little is known about the genetic basis of adaption in lichen populations. Here we studied patterns of genome-wide differentiation in the lichen-forming fungus Lasallia pustulata along an altitudinal gradient in the Mediterranean region. We resequenced six populations as pools and identified highly differentiated genomic regions. We then detected gene-environment correlations while controlling for shared population history and pooled sequencing bias, and performed ecophysiological experiments to assess fitness differences of individuals from different environments.
Results: We detected two strongly differentiated genetic clusters linked to Mediterranean and temperate-oceanic climate, and an admixture zone, which coincided with the transition between the two bioclimates. High altitude individuals showed ecophysiological adaptations to wetter and more shaded conditions. Highly differentiated genome regions contained a number of genes associated with stress response, local environmental adaptation, and sexual reproduction.
Conclusions: Taken together our results provide evidence for a complex interplay between demographic history and spatially varying selection acting on a number of key biological processes, suggesting a scenario of ecological speciation.
MetadatenVerfasserangaben: | Francesco Dal GrandeORCiD, Rahul SharmaGND, Anjuli Meiser, Gregor RolshausenORCiDGND, Burkhard Büdel, Bagdevi Mishra, Marco ThinesORCiDGND, Jürgen OtteORCiDGND, Markus PfenningerORCiDGND, Imke SchmittORCiDGND |
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URN: | urn:nbn:de:hebis:30:3-437255 |
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DOI: | https://doi.org/10.1186/s12862-017-0929-8 |
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ISSN: | 1471-2148 |
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Pubmed-Id: | https://pubmed.ncbi.nlm.nih.gov/28359299 |
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Titel des übergeordneten Werkes (Englisch): | BMC evolutionary biology |
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Verlag: | BioMed Central ; Springer |
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Verlagsort: | London ; Berlin ; Heidelberg |
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Dokumentart: | Wissenschaftlicher Artikel |
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Sprache: | Englisch |
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Datum der Veröffentlichung (online): | 29.06.2017 |
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Datum der Erstveröffentlichung: | 31.03.2017 |
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Veröffentlichende Institution: | Universitätsbibliothek Johann Christian Senckenberg |
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Datum der Freischaltung: | 29.06.2017 |
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Freies Schlagwort / Tag: | Adaptation; Altitudinal; Climate change; Fungi; Gradient; Pool-Seq; Population genomics; SNP; Symbiosis |
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Jahrgang: | 17 |
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Ausgabe / Heft: | 1, Art. 93 |
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Seitenzahl: | 14 |
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Erste Seite: | 1 |
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Letzte Seite: | 14 |
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Bemerkung: | © The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated. |
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HeBIS-PPN: | 424941279 |
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Institute: | Biowissenschaften / Institut für Ökologie, Evolution und Diversität |
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| Fachübergreifende Einrichtungen / Biodiversität und Klima Forschungszentrum (BiK-F) |
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DDC-Klassifikation: | 5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie |
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Sammlungen: | Universitätspublikationen |
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| Sammlung Biologie / Sondersammelgebiets-Volltexte |
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Lizenz (Deutsch): | Creative Commons - Namensnennung 4.0 |
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