Genetic signatures of a range expansion in natura: when clones play leapfrog
| Autor: | Katherine J. Hayden, Stéphane De Mita, Etienne K. Klein, Constance Xhaard, Ronan Becheler, Pascal Frey, Fabien Halkett |
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| Přispěvatelé: | Interactions Arbres-Microorganismes (IAM), Université de Lorraine (UL)-Institut National de la Recherche Agronomique (INRA), Biostatistique et Processus Spatiaux (BIOSP), Institut National de la Recherche Agronomique (INRA), Agence Nationale de la Recherche (ANR-11-BSV7-0007, ANR-12-ADAP-0009, ANR-13-BSV7-0011), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), Biostatistique et Processus Spatiaux (BioSP), European Project: 267196,EC:FP7:PEOPLE,FP7-PEOPLE-2010-COFUND,AGREENSKILLS(2012) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
0301 basic medicine Range (biology) [SDV]Life Sciences [q-bio] dynamique de la colonisation champignon pathogène Biology 010603 evolutionary biology 01 natural sciences Gene flow 03 medical and health sciences Colonization Biological invasions fungal pathogen Temporal scales dispersal range expansion alpes Ecology Evolution Behavior and Systematics Original Research Nature and Landscape Conservation Genetic diversity structure génétique des populations Ecology Melampsora genetic diversity dispersion des populations 15. Life on land biology.organism_classification colonization vallée de la durance 030104 developmental biology melampsora larici populina Genetic structure Biological dispersal fungal plant pathogen |
| Zdroj: | Ecology and Evolution Ecology and Evolution, Wiley Open Access, 2016, 6 (18), pp.6625-6632. ⟨10.1002/ece3.2392⟩ Ecology and Evolution, 2016, 6 (18), pp.6625-6632. ⟨10.1002/ece3.2392⟩ |
| ISSN: | 2045-7758 |
| Popis: | The genetic consequences of range expansions have generally been investigated at wide geographical and temporal scales, long after the colonization event. A unique ecological system enabled us to both monitor the colonization dynamics and decipher the genetic footprints of expansion over a very short time period. Each year an epidemic of the poplar rust (Melampsora larici‐populina) expands clonally and linearly along the Durance River, in the Alps. The colonization dynamics observed in 2004 showed two phases with different genetic outcomes. Upstream, fast colonization maintained high genetic diversity. Downstream, the colonization wave progressively faltered, diversity eroded, and differentiation increased, as expected under recurrent founder events. In line with the high dispersal abilities of rust pathogens, we provide evidence for leapfrog dispersal of clones. Our results thus emphasize the importance of colonization dynamics in shaping spatial genetic structure in the face of high gene flow. |
| Databáze: | OpenAIRE |
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