Long-distance gene flow outweighs a century of local selection and prevents local adaptation in the Irish famine pathogen [i]Phytophthora infestans[/i]
| Autor: | Josselin Montarry, Roselyne Corbière, Didier Andrivon, Isabelle Glais, Hélène Magalon, Bruno Marquer, Claudine Pasco |
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| Přispěvatelé: | Institut de Génétique, Environnement et Protection des Plantes (IGEPP), Institut National de la Recherche Agronomique (INRA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), INRA Plant Health and the Environment Division, AGROCAMPUS OUEST-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Recherche Agronomique (INRA), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST, Andrivon, Didier |
| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
0106 biological sciences
clonal lineage evolution gene flow host resistance local adaptation microsatellites potato late blight selection microsatellite [SDV]Life Sciences [q-bio] résistance de l'hôte flux génique 01 natural sciences Gene flow 03 medical and health sciences Pathosystem Genetics Blight sélection évolution Ecology Evolution Behavior and Systematics Selection (genetic algorithm) 030304 developmental biology Local adaptation Isolation by distance 2. Zero hunger 0303 health sciences biology Resistance (ecology) Ecology food and beverages biology.organism_classification adaptation locale mildiou Phytophthora infestans lignée clonale General Agricultural and Biological Sciences 010606 plant biology & botany Research Article |
| Zdroj: | Evolutionary Applications Evolutionary Applications, Blackwell, 2014, 7 (4), pp.442-452. ⟨10.1111/eva.12142⟩ Evolutionary Applications, 2014, 7 (4), pp.442-452. ⟨10.1111/eva.12142⟩ Evolutionary Applications 4 (7), 442-452. (2014) |
| ISSN: | 1752-4563 1752-4571 |
| DOI: | 10.1111/eva.12142⟩ |
| Popis: | International audience; Sustainably managing plant resistance to epidemic pathogens implies controlling the genetic and demographic changes in pathogen populations faced with resistant hosts. Resistance management thus depends upon the dynamics of local adaptation, mainly driven by the balance between selection and gene flow. This dynamics is best investigated with populations from locally dominant hosts in islands with long histories of local selection. We used the unique case of the potato late blight pathosystem on Jersey, where a monoculture of potato cultivar Jersey Royal' has been in place for over a century. We also sampled populations from the coasts of Brittany and Normandy, as likely sources for gene flow. The isolation by distance pattern and the absence of genetic differentiation between Jersey and the closest French sites revealed gene flow at that spatial scale. Microsatellite allele frequencies revealed no evidence of recombination in the populations, but admixture of two genotypic clusters. No local adaptation in Jersey was detected from pathogenicity tests on Jersey Royal and on French cultivars. These data suggest that long-distance gene flow (similar to 50/100km) prevents local adaptation in Jersey despite a century of local selection by a single host cultivar and emphasize the need for regional rather than local management of resistance gene deployment. |
| Databáze: | OpenAIRE |
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