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15 results on '"Dupas, S."'

1. Population genetics of the Mediterranean corn borer (Sesamia nonagrioides) differs between wild and cultivated plants

Author

Naino Jika, Abdel Kader, Le Ru, B., Capdevielle-Dulac, C., Chardonnet, F., Silvain, J. F., Kaiser, L., Dupas, S., Evolution, génomes, comportement et écologie (EGCE), Institut de Recherche pour le Développement (IRD)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS)-Université Paris-Saclay

Subjects
Topography, [SDV]Life Sciences [q-bio], Plant Science, Moths, Plant Genetics, Geographical locations, ComputingMilieux_MISCELLANEOUS, Geography, Eukaryota, food and beverages, Agriculture, Plants, Europe, Insects, Phylogeography, Experimental Organism Systems, Biogeography, Moths and Butterflies, Medicine, France, Research Article, Valleys, Arthropoda, Science, Research and Analysis Methods, Zea mays, Host-Parasite Interactions, Model Organisms, Plant and Algal Models, Genetics, Animals, Grasses, European Union, Evolutionary Biology, Landforms, Population Biology, Ecology and Environmental Sciences, fungi, Organisms, Biology and Life Sciences, Genetic Variation, Geomorphology, Bayes Theorem, Invertebrates, Maize, Genetics, Population, Animal Studies, Earth Sciences, People and places, Population Genetics
Abstract

The population genetic structure of crop pest populations gives information about their spatial ecology, which helps in designing management strategies. In this paper, we investigated the genetic structure of the Mediterranean Corn Borer (MCB), Sesamia nonagrioides Lefèbvre (Lepidoptera: Noctuidae), one of the most important maize pests in the Mediterranean countries, using microsatellite markers for the first time in this species. Insects were collected in twenty-five locations in southwest and southeast France from cultivated and wild host plants (Zea mays, Sorghum halepense and Typha domingensis). Contrary to what has been reported so far in France, we found that MCB populations could be locally abundant on wild poales plants. Analysis was carried out at 11 polymorphic microsatellite markers. Molecular variance was significantly determined by geography, then by host plant, with 17% and 4%, respectively, when considered as a major effect, and with 14% and 1%, respectively, when considered as a marginal effect in permutational analysis. Multidimensional scaling (MDS) and GENELAND Bayesian clustering suggested that populations infecting wild plants (T. domingensis and S. halepense) were more structured locally than those affecting cultivated maize. In S. halepense, significant Isolation By Distance (IBD) indicated that this factor could explain genetic differentiation of the moth populations. In T. domingensis, local population differentiation was strong but did not depend on distance. The implication of this absence of population structure in maize and the heterogeneity of population genetics patterns in wild plants are discussed in the context of the population dynamics hypothesis and population management strategies.

Published
2020

2. Novel promoters and coding first exons in DLG2 linked to developmental disorders and intellectual disability

Author

Létard, Pascaline, Drunat, Séverine, Vial, Yoann, Duerinckx, Sarah, Ernault, Anais, Amram, Daniel, Arpin, Stéphanie, Bertoli, Marta, Busa, Tiffany, Ceulemans, Berten, Desir, Julie, Doco-Fenzy, Martine, Elalaoui, Siham Chafai, Devriendt, Koenraad, Faivre, Laurence, Francannet, Christine, Geneviève, Geneviève, Gitiaux, Cyril, Julia, Sophie, Lebon, Sébastien, Lubala, Toni, Mathieu-Dramard, Michèle, Maurey, Hélène, Metreau, Julia, Nasserereddine, Sanaa, Nizon, Mathilde, Pierquin, Geneviève, Pouvreau, Nathalie, Rivier-Ringenbach, Clothilde, Rossi, Massimiliano, Schaefer, Elise, Sznajer, Yves, Tunca, Yusuf, Guilmin Crepon, Sophie, Alberti, Corinne, Elmaleh-Bergès, Monique, Benzacken, Brigitte, Wollnick, Bernd, Woods, C Geoffrey, Rauch, Anita, El Ghouzzi, Vincent, Gressens, Pierre, Verloes, Alain, Passemard, Sandrine, Geneviève, David, Julia, Julia, Woods, C. Geoffrey, Mordel, S, Schaeffer, Stéphane, Dupas, S., Laville, Marie-Alice, Chapon, Françoise, Allouche, S., Mordel, Patrick, Dupas, Quentin, Reggiani, Claudio, Coppens, Sandra, Sekhara, Tayeb, Dimov, Ivan, Pichon, Bruno, Lufin, Nicolas, Addor, Marie-Claude, Belligni, Elga Fabia, Digilio, Maria Cristina, Faletra, Flavio, Ferrero, Giovanni Battista, Gérard, Marion, Isidor, Bertrand, Joss, Shelagh, Niel-Bütschi, Florence, Perrone, Maria Dolores, Petit, Florence, Renieri, Alessandra, Romana, Serge, Topa, Alexandra, Vermeesch, Joris Robert, Lenaerts, Tom, Casimir, Georges, Abramowicz, Marc, Bontempi, Gianluca, Vilain, Catheline, Deconinck, Nicolas, Smits, Guillaume, Université libre de Bruxelles (ULB), Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), University of Turin, IRCCS Ospedale Pediatrico Bambino Gesù [Roma], Institute for Maternal and Child Health - IRCCS 'Burlo Garofolo' [Trieste], Service de Génétique Clinique [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Queen Elizabeth University Hospital (Glasgow), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Università degli Studi di Siena = University of Siena (UNISI), Laboratoire Histologie Embryologie Cytogénétique [CHU Necker], CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Sahlgrenska University Hospital [Gothenburg], Université Catholique de Louvain = Catholic University of Louvain (UCL), Universiteit Gent = Ghent University [Belgium] (UGENT), Hôpital Erasme [Bruxelles] (ULB), Faculté de Médecine [Bruxelles] (ULB), Université libre de Bruxelles (ULB)-Université libre de Bruxelles (ULB), Neuroprotection du Cerveau en Développement / Promoting Research Oriented Towards Early Cns Therapies (PROTECT), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), AP-HP Hôpital universitaire Robert-Debré [Paris], UNIROUEN - UFR Santé (UNIROUEN UFR Santé), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU), Unité fonctionnelle de génétique clinique, Université Paris Diderot - Paris 7 (UPD7)-Hôpital Robert Debré-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Département de génétique médicale [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM), University of Antwerp (UA), Institut de Pathologie et Génétique [Gosselies] (I.P.G.), Service de Génétique, Centre Hospitalier Universitaire de Reims (CHU Reims)-Hôpital Maison Blanche-IFR 53, Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Centre for Human Genetics, Catholic University of Leuven - Katholieke Universiteit Leuven (KU Leuven)-University Hospitals Leuven [Leuven], Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER, Service de Génétique Médicale [CHU Clermont-Ferrand], CHU Clermont-Ferrand, Institut Cochin (IC UM3 (UMR 8104 / U1016)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Centre National de la Recherche Scientifique (CNRS), Service de génétique médicale [Toulouse], CHU Toulouse [Toulouse]-Hôpital Purpan [Toulouse], CHU Toulouse [Toulouse], Service de génétique médicale, CHU Amiens-Picardie, Service Neuropédiatrie, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Bicêtre, AP-HP Hôpital Bicêtre (Le Kremlin-Bicêtre), Centre de Génétique Humaine, Université de Liège-CHU Liège, Service de pédiatre-Néonatologie, CH Villefranche s/Saone, Centre de recherche en neurosciences de Lyon (CRNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hôpital de Hautepierre [Strasbourg], Medical Genetics, Epidémiologie Clinique et Evaluation Economique Appliquées aux Populations Vulnérables (ECEVE (U1123 / UMR_S_1123)), Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AP-HP Hôpital universitaire Robert-Debré [Paris], Service d'imagerie pédiatrique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Département de génétique, Allergy Unit - Department of Dermatology, University of Zürich [Zürich] (UZH), Physiopathologie et neuroprotection des atteintes du cerveau en développement, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de génétique médicale, maladies rares et médecine personnalisée [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Department of Biology [Utah], University of Utah, Laboratoire Evolution, Génomes et Spéciation (LEGS), Centre National de la Recherche Scientifique (CNRS), Hôpital Côte de Nacre [CHU Caen], CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN), Service de biochimie [CHU Caen], Signalisation, électrophysiologie et imagerie des lésions d’ischémie-reperfusion myocardique (SEILIRM), Département Génétique Médicale-Maternité, Université de Lorraine (UL), Center for Medical Genetics, Centre de Recherche Jean-Pierre AUBERT Neurosciences et Cancer - U1172 Inserm - U837 (JPArc), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Lille Nord de France (COMUE)-Université de Lille, Department of Human Genetics, Radboud University Medical Center [Nijmegen], AI-lab, Vakgroep Computerwetenschappen, Universiteit Gent [Ghent], gerard, marion, Università degli studi di Torino = University of Turin (UNITO), Universiteit Gent = Ghent University (UGENT), and Informatics and Applied Informatics

Subjects
Male, 0301 basic medicine, Guanylate Kinases/genetics, Developmental Disabilities, Intellectual disability, lcsh:Medicine, ASPM, brain imaging, brain development, Tumor Suppressor Proteins -- genetics, Genome, Mice, Intellectual Disability -- genetics -- metabolism, Global developmental delay, Copy-number variation, Promoter Regions, Genetic, Child, Genetics (clinical), Epigenomics, Genetics, ATP6 deletion, Membrane Proteins -- genetics, primary microcephaly, Neurodevelopmental disorders, food and beverages, Functional genomics, Exons, DLG2, Promoters, Animals, Female, Guanylate Kinases, Humans, Intellectual Disability, Membrane Proteins, Tumor Suppressor Proteins, Molecular Medicine, Molecular Biology, Sciences bio-médicales et agricoles, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Guanylate Kinases -- genetics, lcsh:QH426-470, Developmental Disabilities/genetics, Developmental Disabilities/metabolism, Intellectual Disability/genetics, Intellectual Disability/metabolism, Membrane Proteins/genetics, Tumor Suppressor Proteins/genetics, Genomics, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Biology, Promoter Regions, 03 medical and health sciences, Genetic, Complex V deficiency, Next generation sequencing, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Gene, MCPH, Developmental Disabilities -- genetics -- metabolism, Research, lcsh:R, Human genetics, Mitochondrial disease, lcsh:Genetics, 030104 developmental biology, centrosome, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, NARP syndrome
Abstract

Tissue-specific integrative omics has the potential to reveal new genic elements important for developmental disorders., SCOPUS: ar.j, info:eu-repo/semantics/published

Published
2017

3. Incidence and predictors of venous thromboembolism recurrence after a first isolated distal deep vein thrombosis

Author

Galanaud, J.-P., Sevestre, M.-A., Genty, C., Kahn, S.R., Pernod, G., Rolland, C., Diard, A., Dupas, S., Jurus, C., Diamand, J.-M., Quéré, I., Bosson, J.-L., Investigators, OPTIMEV-SFMV, CIC Montpellier, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-CHU Saint-Eloi-Institut National de la Santé et de la Recherche Médicale (INSERM), Caractéristiques féminines des dysfonctions des interfaces cardio-vasculaires (EA 2992), Université Montpellier 1 (UM1)-Université de Montpellier (UM), CHU Amiens-Picardie, Techniques pour l'Evaluation et la Modélisation des Actions de la Santé (TIMC-IMAG-ThEMAS), Techniques de l'Ingénierie Médicale et de la Complexité - Informatique, Mathématiques et Applications, Grenoble - UMR 5525 (TIMC-IMAG), VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-VetAgro Sup - Institut national d'enseignement supérieur et de recherche en alimentation, santé animale, sciences agronomiques et de l'environnement (VAS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF), McGill University = Université McGill [Montréal, Canada], Clinique de Médecine Vasculaire, and Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble

Subjects
Male, medicine.medical_specialty, pulmonary embolism, recurrence, Deep vein, Lower risk, cohort studies, Risk Factors, Outpatients, Humans, Medicine, Prospective Studies, Vein, Aged, Inpatients, business.industry, Incidence, Incidence (epidemiology), Anticoagulants, [SDV.MHEP.HEM]Life Sciences [q-bio]/Human health and pathology/Hematology, Venous Thromboembolism, Hematology, Middle Aged, medicine.disease, Thrombosis, 3. Good health, Pulmonary embolism, Discontinuation, Surgery, Venous thrombosis, Treatment Outcome, medicine.anatomical_structure, Female, epidemiology, France, venous thrombosis, business
Abstract

International audience; BACKGROUND:Isolated distal deep vein thrombosis (iDDVT) (i.e. without proximal DVT or pulmonary embolism) represents half of all cases of lower limb DVT. Its clinical significance and management are controversial. Data on long-term follow-up are scarce, especially concerning risk and predictors of venous thromboembolism (VTE) recurrence.METHODS:Using data from the OPTIMEV (OPTimisation de l'Interrogatoire dans l'évaluation du risque throMbo-Embolique Veineux) study, a prospective, observational, multicenter study, we compared, 3 years after an index VTE event and after discontinuation of anticoagulants, (i) the incidence and type of recurrence in patients without cancer with a first iDDVT vs. a first isolated proximal DVT (iPDVT) and (ii) predictors of recurrence after iDDVT.RESULTS:Compared with patients with iPDVT (n = 259), patients with an iDDVT (n = 490) had a lower annualized incidence of overall VTE recurrence (5.2% [95% confidence interval 3.6-7.6] vs. 2.7% [1.9-3.8], respectively; P = 0.02) but a similar incidence of pulmonary embolism recurrence (1.0% [0.5-2.3] vs. 0.9% [0.5-1.6], respectively; P = 0.83). An age of > 50 years, unprovoked character of index iDDVT, and involvement of more than one vein in one or both legs each independently tripled the risk of recurrence, with the latter then being ≥ 3% per patient-year. Neither muscular vein nor deep-calf vein location of iDDVT nor clot diameter with compression influenced the risk of recurrence.CONCLUSIONS:After stopping anticoagulants, patients with iDDVT have a significantly lower risk of overall VTE recurrence than did patients with iPDVT but a similar risk of serious recurrent VTE. Age > 50 years, unprovoked iDDVT, and number of thrombosed veins (more than one) influenced the risk of recurrence and may help to define patients at significant risk of recurrence.

Published
2014

4. Quelques exemples de bio-invasions dans le monde

Author

Vidal, Claire, Gauthier, Nathalie, Rochat, D., Hérard, F., Thiéry, A., Vayssières, J.F., Dupas, S., Dangles, Olivier, Silvain, Jean-François, Torres-Leguizamon, Magally, Zeddam, Jean-Louis, Sforza, R., Desneux, N., Institut de Recherche pour le Développement (IRD), Physiologie de l'Insecte : Signalisation et Communication (PISC), Institut National de la Recherche Agronomique (INRA)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National Agronomique Paris-Grignon (INA P-G), European Biological Control Laboratory (EBCL), United States Department of Agriculture (USDA), Université de la Méditerranée - Aix-Marseille 2, Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad), Universidad Mayor de San Andrés (UMSA), UMR - Interactions Plantes Microorganismes Environnement (UMR IPME), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Institut de Recherche pour le Développement (IRD [France-Sud]), Institut Sophia Agrobiotech (ISA), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Recherche Agronomique (INRA), Nicolas Sauvion (ed. scient.),Paul-André calatayud (ed. scient.), Denis thiéry (ed. scient.), Frédéric Marion-Poll (ed. scient.), Institut National de la Recherche Agronomique (INRA)-Université Nice Sophia Antipolis (1965 - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), Sauvion, N. (ed.), Calatayud, Paul-André (ed.), Thiéry, D. (ed.), and Marion-Pol, F. (ed.)

Subjects
Glycine max, Platanus occidentalis, INVASION, Relation plante animal, éradication, TAXONOMIE, Bemisia tabaci, PHYTOPHAGE, Interactions biologiques, Plante légumière, Coccoidea, Cerambycidae, Dynamique des populations, ADAPTATION, Anoplophora glabripennis, bio invasion, Introduction d'animaux, Lutte antiravageur, Ravageur des plantes, LEPIDOPTERE RAVAGEUR, PIEGEAGE, RESISTANCE DE L'HOTE, Tephritidae, INTRODUCTION D'ESPECES, HISTOIRE, PRATIQUE CULTURALE, Gelechiidae, INSECTE, espèces introduites, Feuillu, Cicadellidae, [SDV.OT]Life Sciences [q-bio]/Other [q-bio.OT], Anoplophora chinensis, BIOTYPE, monde, Plante fruitière, ECHANGE COMMERCIAL, Corythucha, Rhynchophorus ferrugineus, METHODE DE LUTTE, Araceae, LUTTE BIOLOGIQUE, Solanum tuberosum, Nicotiana tabacum, VECTEUR, SUCCES INVASIF, Étude de cas, INFESTATION, INVASION BIOLOGIQUE, DIVERSITE GENETIQUE, H10 - Ravageurs des plantes, Lutte biologique, analyses des risques, PLANTE HOTE, méthode de lutte, CHANGEMENT CLIMATIQUE, Écologie animale, Aphis glycines, Plante de culture, REPARTITION GEOGRAPHIQUE, Espèce envahissante
Abstract

chapitre 3; National audience

Published
2013

5. Variation of Leptopilina boulardi success in Drosophila hosts : What is inside the Black Box ?

Author

Dubuffet, A., Colinet, D., Anselme, C., Dupas, S., Carton, Y., Poirie, M., Laboratoire Evolution, Génomes et Spéciation (LEGS), Centre National de la Recherche Scientifique (CNRS), Institute of Integrative and Comparative Biology, Faculty of Biological Sciences, University of Leeds, Interactions Biotiques et Santé Végétale, Institut National de la Recherche Agronomique (INRA), UR 072, Laboratoire Evolution, Génomes et Spéciation, Institut de Recherche pour le Développement (IRD), Pontificia Universidad Católica del Ecuador, and Simonneau, Evelyne

Subjects
[SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV]Life Sciences [q-bio], [SDV.BA]Life Sciences [q-bio]/Animal biology, fungi, ComputingMilieux_MISCELLANEOUS, RELATION HOTE-PARASITE
Abstract

International audience; Interactions between Drosophila hosts and parasitoid wasps are among the few examples in which occurrence of intraspecific variation of parasite success has been studied in natural populations. Such variations can originate from three categories of factors: environmental, host and parasitoid factors. Under controlled laboratory conditions, it is possible to focus on the two last categories, and, using specific reference lines, to analyze their respective importance. Parasitoid and host contributions to variations in parasite success have largely been studied in terms of evolutionary and mechanistic aspects in two Drosophila parasitoids, Asobara tabida and, in more details, in Leptopilina boulardi. This chapter focuses on the physiological and molecular aspects of L. boulardi interactions with two Drosophila host species, while most of the evolutionary hypotheses and models are presented in Chapter 11 of Dupas et al.

Published
2009

6. Local, geographic and phylogenetic scales of coevolution in Drosophila-Parasitoid interactions

Author

Dupas, S., Dubuffet, Aurore, Carton, Yves, Poirie, Marylene, UR 072, Laboratoire Evolution, Génomes et Spéciation, Institut de Recherche pour le Développement (IRD), Pontificia Universidad Católica del Ecuador, Institute of Integrative and Comparative Biology, Faculty of Biological Sciences, University of Leeds, Interactions Biotiques et Santé Végétale, and Institut National de la Recherche Agronomique (INRA)

Subjects
DROSOPHILA PARASITOIDS, COEOLUTIONARY DIVERSIFICATION, COEVOLUTIONARY ESCALATION, [SDV]Life Sciences [q-bio], fungi, CONSTRAINTS, GEOGRAPHIC MOSAIC OF COEVOLUTION, COEVOLUTIONARY POLYMORPHISM, COEVOLUTIONARY ALTERNATION, PHYLOGENETIC
Abstract

International audience; In this chapter, we describe the geographically widespread genetic fixation of traits involved in Drosophila–parasitoid immune interactions and the situations where such fixation is not observed. We then discuss how the three classes of coevolutionary dynamics that can occur at the local scale (coevolutionary escalation, coevolutionary alternation and coevolutionary polymorphism), the geographic mosaic of selection, and the phylogenetic constraints may explain such evolutionary patterns and drive diversification in the interactions. Most Drosophila parasitoid traits involved in virulence are host-species specific. Directional selection (coevolutionary escalation) on such traits can lead to their fixation or on the contrary maintain their polymorphism if these traits are associated with fitness costs. When hosts targeted by different host-specific virulence systems coexist, fluctuations in selective pressures on these systems, together with the ability of Drosophila parasitoids to select the most susceptible host for parasitization, can lead to coevolutionary alternation. Finally, we discuss the potential for parasitoid diversification in relation with the fact that most observed geographic situations, for different parasitoid clades, correspond to coevolutionary cold spots, due to fixation of virulence in parasitoid taxa.

Published
2009

8. Viral cystatin evolution and 3D structure modelling a case of directional selection acting on a viral protein involved in a host-parasitoid interaction

Author

Serbielle, C., Chowdhury, S., Pichon, S., Dupas, S., Lesobre, J., E.O., Purisima, J.-M., Drezen, Huguet, E., Laboratoire Evolution, Génomes et Spéciation (LEGS), Centre National de la Recherche Scientifique (CNRS), and Simonneau, Evelyne

Subjects
[SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.BA]Life Sciences [q-bio]/Animal biology
Published
2008

9. Inferring from Cyt b gene the Triatoma brasiliensis Neiva, 1911 (Hemiptera : Reduviidae : Triatominae) genetic structure and domiciliary infestation in the state of Paraiba, Brazil

Author

Almeida, C., Pacheco, R., Haag, K., Dupas, S., Dotson, E., Costa, J., Laboratoire Evolution, Génomes et Spéciation (LEGS), Centre National de la Recherche Scientifique (CNRS), and Simonneau, Evelyne

Subjects
[SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.BA]Life Sciences [q-bio]/Animal biology
Published
2008

11. Genetic interactions between a parasitoid wasp and its Drosophila hosts

Author

Dubuffet, A., Dupas, S., Frey, F., Drezen, J.-M., Poirié, M., Carton, Y., Laboratoire Evolution, Génomes et Spéciation (LEGS), Centre National de la Recherche Scientifique (CNRS), and Simonneau, Evelyne

Subjects
[SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.BA]Life Sciences [q-bio]/Animal biology, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2007

12. Differential expression of the CrV1 haemocyte inactivation-associated polydnavirus gene in the African maize stem borer Busseola fusca (Fuller) parasitized by two biotypes of the endoparasitoid Cotesia sesamiae (Cameron)

Author

C.W., Gitau, Gundersen-Rindal, D., Pedroni, M., P.J., Mbugi, Dupas, S., Simonneau, Evelyne, Laboratoire Evolution, Génomes et Spéciation (LEGS), and Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.BA]Life Sciences [q-bio]/Animal biology, parasitic diseases, fungi, gene expression, busseola fusca, CrV1 genes, Cotesia sesamiae, ComputingMilieux_MISCELLANEOUS
Abstract

Polydnaviruses are rarely studied for their natural variation in immune suppressive abilities. The polydnavirus harboring braconid Cotesia sesamiae, a widespread endoparasitoid of Busseola fusca and Sesamia calamistis in sub-Saharan Africa exists as two biotypes. In Kenya, the western biotype completes development in B. fusca larvae. However, eggs of the coastal C sesamiae are encapsulated in this host and ultimately, no parasitoids emerge from parasitized B. fusca larvae. Both biotypes develop successfully in S. calamistis larvae. Encapsulation activity by B. fusca larvae towards eggs of the avirulent C sesamiae was detectable six hours post-parasitization. The differences in encapsulation of virulent and avirulent strains were associated with differences in nucleotide sequences and expression of a CrV1 polydnavirus (PDV) gene, which is associated with haemocyte inactivation in the Cotesia rubecula/Pieris rapae system. CrV1 expression was faint or absent in fat body and haemolymph samples from B. fusca parasitized by the avirulent C. sesamiae, which exhibited encapsulation of eggs. Expression was high in fat body and haernolymph samples from both B. fusca and S. calamistis larvae parasitized by the virulent C sesamiae, encapsulation in the former peaking at the same time points as CrV1 expression in the latter. Non synonymous difference in CrV1 gene sequences between virulent and avirulent wasp suggests that variations in B. fusca parasitism by C sesamiae may be due to qualitative differences in CrV1-haemocyte interactions.

Published
2007

13. Genome ecosystem and transposable elements species. *Gene*. 390: 214-220

Author

Le Rouzic, A., Dupas, S., Capy, P., Simonneau, Evelyne, Laboratoire Evolution, Génomes et Spéciation (LEGS), and Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDV.BA] Life Sciences [q-bio]/Animal biology, [SDV.BA]Life Sciences [q-bio]/Animal biology
Published
2007

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