Exploring the causes of small effective population sizes in cyst nematodes using artificial Globodera pallida populations

Autor: Josselin Montarry, Sylvain Fournet, Pierre-Loup Jan, Eric J. Petit, Eric Grenier, Romain Mabon, Sylvie Bardou-Valette
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), Unité Mixte de Recherche sur les Herbivores - UMR 1213 (UMRH), Institut National de la Recherche Agronomique (INRA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Écologie et santé des écosystèmes (ESE), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut National de la Recherche Agronomique (INRA)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS), Institut National de la Recherche Agronomique (INRA)-Université de Rennes (UR)-AGROCAMPUS OUEST
Jazyk: angličtina
Rok vydání: 2019
Předmět:
0106 biological sciences
Evolution
nematode
[SDV]Life Sciences [q-bio]
Population
Zoology
selection
Potato cyst nematode
010603 evolutionary biology
01 natural sciences
General Biochemistry
Genetics and Molecular Biology
[SHS]Humanities and Social Sciences
03 medical and health sciences
Effective population size
Genetic drift
medicine
Animals
[SDV.BV]Life Sciences [q-bio]/Vegetal Biology
Cyst
[INFO]Computer Science [cs]
Tylenchoidea
Globodera pallida
education
Selection (genetic algorithm)
Plant Diseases
Solanum tuberosum
030304 developmental biology
General Environmental Science
Population Density
0303 health sciences
education.field_of_study
General Immunology and Microbiology
biology
General Medicine
biology.organism_classification
medicine.disease
plant resistance
Nematode
[SDE]Environmental Sciences
genetic drift
General Agricultural and Biological Sciences
effective population size
Zdroj: Proceedings of the Royal Society B: Biological Sciences
Proceedings of the Royal Society B: Biological Sciences, Royal Society, The, 2019, 286 (1894), ⟨10.1098/rspb.2018.2359⟩
Proceedings of the Royal Society B: Biological Sciences, 2019, 286 (1894), ⟨10.1098/rspb.2018.2359⟩
ISSN: 0962-8452
1471-2954
DOI: 10.1098/rspb.2018.2359⟩
Popis: The effective size of a population is the size of an ideal population which would undergo genetic drift at the same rate as the real population. The balance between selection and genetic drift depends on the effective population size (Ne), rather than the real numbers of individuals in the population (N). The objectives of the present study were to estimateNein the potato cyst nematodeGlobodera pallidaand to explore the causes of a lowNe/Nratio in cyst nematodes using artificial populations. Using a temporal analysis of 24 independent populations, the medianNewas 58 individuals (minNe= 25 and maxNe= 228).Neis commonly lower thanNbut in the case of cyst nematodes, theNe/Nratio was extremely low. Using artificial populations showed that this low ratio did not result from migration, selection and overlapping generations, but could be explain by the fact thatG. pallidapopulations deviate in structure from the assumptions of the ideal population by having unequal sex ratios, high levels of inbreeding and a high variance in family sizes. The consequences of a lowNe, resulting in a strong intensity of genetic drift, could be important for their control becauseG. pallidapopulations will have a low capacity to adapt to changing environments.
Databáze: OpenAIRE
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