دورية أكاديمية
Genomics of the divergence continuum in an African plant biodiversity hotspot, I: drivers of population divergence in Restio capensis (Restionaceae)
العنوان: | Genomics of the divergence continuum in an African plant biodiversity hotspot, I: drivers of population divergence in Restio capensis (Restionaceae) |
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المؤلفون: | Lexer, C., Wüest, R. O., Mangili, S., Heuertz, Myriam, Stölting, K. N., Pearman, P. B., Forest, F., Salamin, N., Zimmermann, N. E., Bossolini, E. |
المساهمون: | Université de Fribourg = University of Fribourg (UNIFR), Landscape Dynamics Unit, Swiss Federal Research Institute, Laboratoire d'Ecologie Alpine (LECA), Université Joseph Fourier - Grenoble 1 (UJF)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS), Biodiversité, Gènes & Communautés (BioGeCo), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB), Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology (INIA), Jodrell Laboratory, Royal Botanic Gardens Kew, Department of Ecology & Evolution, Université de Lausanne = University of Lausanne (UNIL), Swiss Institute of Bioinformatics Lausanne (SIB), Bayer Crop Science NV, Partenaires INRAE |
المصدر: | ISSN: 0962-1083. |
بيانات النشر: | HAL CCSD Wiley |
سنة النشر: | 2014 |
المجموعة: | Université Savoie Mont Blanc: HAL |
مصطلحات موضوعية: | RAD sequencing, isolation by adaptation, isolation by environment, speciation, population divergence, cape Floristic Region, [SDV]Life Sciences [q-bio] |
الوصف: | International audience ; Understanding the drivers of population divergence, speciation and species persistence is of great interest to molecular ecology, especially for species-rich radiations inhabiting the world's biodiversity hotspots. The toolbox of population genomics holds great promise for addressing these key issues, especially if genomic data are analysed within a spatially and ecologically explicit context. We have studied the earliest stages of the divergence continuum in the Restionaceae, a species-rich and ecologically important plant family of the Cape Floristic Region (CFR) of South Africa, using the widespread CFR endemic Restio capensis (L.) H.P. Linder & C.R. Hardy as an example. We studied diverging populations of this morphotaxon for plastid DNA sequences and >14 400 nuclear DNA polymorphisms from Restriction site Associated DNA (RAD) sequencing and analysed the results jointly with spatial, climatic and phytogeographic data, using a Bayesian generalized linear mixed modelling (GLMM) approach. The results indicate that population divergence across the extreme environmental mosaic of the CFR is mostly driven by isolation by environment (IBE) rather than isolation by distance (IBD) for both neutral and non-neutral markers, consistent with genome hitchhiking or coupling effects during early stages of divergence. Mixed modelling of plastid DNA and single divergent outlier loci from a Bayesian genome scan confirmed the predominant role of climate and pointed to additional drivers of divergence, such as drift and ecological agents of selection captured by phytogeographic zones. Our study demonstrates the usefulness of population genomics for disentangling the effects of IBD and IBE along the divergence continuum often found in species radiations across heterogeneous ecological landscapes. |
نوع الوثيقة: | article in journal/newspaper |
اللغة: | English |
العلاقة: | info:eu-repo/semantics/altIdentifier/pmid/25065899; hal-02634127; https://hal.inrae.fr/hal-02634127Test; PRODINRA: 324487; PUBMED: 25065899; WOS: 000341176200017 |
DOI: | 10.1111/mec.12870 |
الإتاحة: | https://doi.org/10.1111/mec.12870Test https://hal.inrae.fr/hal-02634127Test |
رقم الانضمام: | edsbas.34318D0B |
قاعدة البيانات: | BASE |
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