Multiple introductions of divergent genetic lineages in an invasive fungal pathogen, Cryphonectria parasitica, in France
| العنوان: | Multiple introductions of divergent genetic lineages in an invasive fungal pathogen, Cryphonectria parasitica, in France |
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| المؤلفون: | O. Fabreguettes, Cécile Robin, Xavier Capdevielle, Cyril Dutech |
| المساهمون: | Biodiversité, Gènes & Communautés (BioGeCo), Institut National de la Recherche Agronomique (INRA)-Université de Bordeaux (UB) |
| المصدر: | Heredity Heredity, Nature Publishing Group, 2010, 105 (2), pp.220-228. ⟨10.1038/hdy.2009.164⟩ |
| بيانات النشر: | Nature Publishing Group, 2010. |
| سنة النشر: | 2010 |
| مصطلحات موضوعية: | 0106 biological sciences, CRYPHONECTRIA-HYPOVIRUS, LINKAGE DISEQUILIBRIUM, Genotype, Range (biology), Aesculus, Introduced species, Biology, 010603 evolutionary biology, 01 natural sciences, Genetic recombination, BAYESIAN CLUSTERING ANALYSIS, 03 medical and health sciences, Chestnut blight, Genetic variation, Genetics, Cryphonectria, ASCOMYCOTA, Genetics (clinical), Plant Diseases, 030304 developmental biology, Recombination, Genetic, 0303 health sciences, Genetic diversity, BIOLOGICAL INVASION, Ecology, Genetic Variation, 15. Life on land, biology.organism_classification, Evolutionary biology, Microsatellite, PRINCIPAL COMPONENT ANALYSIS, France, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Microsatellite Repeats |
| الوصف: | International audience; The occurrence of multiple introductions may be a crucial factor in the successful establishment of invasive species, but few studies focus on the introduction of fungal pathogens, despite their significant effect on invaded habitats. Although Cryphonectria parasitica, the chestnut blight fungus introduced in North America and Europe from Asia during the 20th century, caused dramatic changes in its new range, the history of its introduction is not well retraced in Europe. Using 10 microsatellite loci, we investigated the genetic diversity of 583 isolates in France, where several introductions have been hypothesized. Our analyses showed that the seven most frequent multilocus genotypes belonged to three genetic lineages, which had a different and geographically limited distribution. These results suggest that different introduction events occurred in France. Genetic recombination was low among these lineages, despite the presence of the two mating types in each chestnut stand analysed. The spatial distribution of lineages suggests that the history of introductions in France associated with the slow expansion of the disease has contributed to the low observed rate of recombination among the divergent lineages. However, we discuss the possibility that environmental conditions or viral interactions could locally reduce recombination among genotypes. |
| اللغة: | English |
| تدمد: | 0018-067X |
| DOI: | 10.1038/hdy.2009.164⟩ |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a37a4dac2f6fda0708bc2498dce5ed29 http://hdl.handle.net/20.500.12278/107855 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....a37a4dac2f6fda0708bc2498dce5ed29 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 0018067X |
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| DOI: | 10.1038/hdy.2009.164⟩ |