Resilience of genetic diversity in forest trees over the Quaternary
CERVANTES, Sandra
University of Oulu [Finland] = Oulun yliopisto [Suomi] = Université d'Oulu [Finlande]
University of Oulu [Finland] = Oulun yliopisto [Suomi] = Université d'Oulu [Finlande]
BAGNOLI, Francesca
Istituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
Istituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
GRIVET, Delphine
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology [INIA]
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology [INIA]
JORGE, Véronique
Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt [BioForA]
Biologie intégrée pour la valorisation de la diversité des Arbres et de la Forêt [BioForA]
OLSSON, Sanna
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology [INIA]
Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria = National Institute for Agricultural and Food Research and Technology [INIA]
PINOSIO, Sara
Istituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
Istituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
ROGIER, Odile
Système d'Information des GENomes des Animaux d'Elevage [SIGENAE]
Génétique Animale et Biologie Intégrative [GABI]
Système d'Information des GENomes des Animaux d'Elevage [SIGENAE]
Génétique Animale et Biologie Intégrative [GABI]
VENDRAMIN, Giovanni
Istituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
< Réduire
Istituto di Bioscienze e BioRisorse = Institute of Biosciences and Bioresources [IBBR CNR]
Langue
en
Communication dans un congrès
Ce document a été publié dans
26th IUFRO World Congress, 2024-06-23, Stockholm.
Résumé en anglais
Synchronous effective population size changes and genetic stability of forest trees through glacial cyclesThe effect of past environmental changes on the demography and genetic diversity of natural populations remains a ...Lire la suite >
Synchronous effective population size changes and genetic stability of forest trees through glacial cyclesThe effect of past environmental changes on the demography and genetic diversity of natural populations remains a contentious issue and has rarely been investigated across multiple, phylogenetically distant species. Here, we performed comparative population genomic analyses and demographic inferences for seven widely distributed and ecologically contrasted European forest tree species based on concerted sampling of 164 populations across their natural ranges. For all seven species, the effective population size, Ne, increased or remained stable over many glacial cycles and up to 15 million years in the most extreme cases. Hence, surprisingly, the drastic environmental changes associated with the Pleistocene glacial cycles have had little impact on the level of genetic diversity of dominant forest tree species, despite major shifts in their geographic ranges. Based on their trajectories of Ne over time, the seven tree species can be divided into three major groups, highlighting the importance of life history and range size in determining synchronous variation in genetic diversity, over time. Altogether, our results indicate that forest trees were able to retain their evolutionary potential over very long periods of time despite strong environmental changes.< Réduire
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