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INRAE

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Last update: May 2021

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Dutech Cyril

Chercheur

Equipe GEMFOR

 

Cyril DUTECH

UMR 1202 Biodiversité Gènes & Communautés
INRA
69 route d'Arcachon
33610 CESTAS Cedex – France

Tel : 05 57 12 27 25

Courriel : cyril.dutech_at_pierroton.inra.fr

Parcours professionnel et formation

Chargé de recherches à l'INRA-Bordeaux depuis décembre 2002
Séjour post-doctoral à l'Université de St Louis (UMSL, Missouri) et à l'Université de Los Angeles (UCLA, Californie) de septembre 2001 à novembre 2002. sous la direction de Victoria Sork
Doctorat de Génétique des populations, 2001, Université Montpellier II
DEA Biodiversité, Génétique et Evolution, 1995, Université Paris VI
Maîtrise de Biologie des Organismes et des Populations, 1994, Université Paris VI

Thématiques de recherches

Que ce soit au cours de mes recherches en thèse sur la diversité génétique d'un arbre de la forêt guyanaise (Vouacapoua americana) au sein de Silvolab ou depuis mon recrutement dans l'équipe de pathologie forestière de l'UMR BioGeCo, mes thèmes de recherches sont principalement centrés sur la compréhension des processus biologiques et historiques qui affectent la diversité génétique des populations naturelles et expliquent leur dynamique évolutive. Trois espèces sont particulièrement étudiées: Cryphonectria parasitica, Erysiphe alphitoides et Armillaria ostoyae.

Actuellement, quatre questions sont au centre de mes recherches:
Quelle est la part de la reproduction sexuée dans les populations de champignons phytopathogènes sachant que de nombreuses espèces semblent capables de se maintenir essentiellement par voie asexuée ou en pratiquant des recombinaisons partielles (recombinaisons mitotiques par exemple)?
Comment se dispersent les agents pathogènes entre les populations et notamment quelle est la part de l'activité humaine dans cette dispersion et le rôle joué par la structure du paysage?

De nombreuses épidémies semblent issues d'introductions récentes. Peut-on retracer l'histoire de ces colonisations et comprendre les mécanismes évolutifs qui ont assuré le succès invasif de ces espèces (hybridation, évolution du mode de reproduction et de la virulence,…)?
Quels sont les impacts de ces champignons pathogènes sur la diversité génétique de leurs hôtes respectifs? Peuvent-ils favoriser la diversité génétique de leurs hôtes notamment par des processus type fréquence-dépendante?

Mes approches sont essentiellement basées sur l'analyse des structures génétiques à partir de différents marqueurs moléculaires (microsatellites nucléaires, séquences mitochondriales, EST,…) et interprétées dans le cadre de la génétique des populations. Cette approche est complétée par l'utilisation des statistiques spatiales et des expérimentations sur le terrain.

Publications majeures

Feau N ., Dutech C., Brusini J., Rigling D. , Robin C. (2014)  Multiple introductions and recombination in Cryphonectria hypovirus 1: perspective for a sustainable biological control of chestnut bligh. Evolutionary Applications. 7:580-596

Dutech C., Barrès B., Bridier J., Robin C., Milgroom M.G., Ravigné V. (2012) The Chestnut Blight Fungus World Tour: successive introduction events from diverse origins in an invasive plant fungal pathogen. Molecular Ecology 21: 3931–3946

Feau N, Decourcelle T., Husson C., Desprez-Loustau ML, Dutech C. (2011) Finding single copy genes out of sequenced genomes for multilocus phylogenetics in non-model fungi. Plos One 6:e18803

Dutech C, Fabreguettes O., Capdevielle X.,  Robin C. (2010) Multiple introductions of divergent lineages in an invasive fungal pathogen, Cryphonectria parasitica, in France. Heredity 105:220-228

Dutech C. , Rossi J.-P. , Fabreguettes O. , Robin C. (2008) Geostatistical genetic analysis for inferring the dispersal pattern of a partially clonal species: example of the chestnut blight fungus. Molecular Ecology 17:4597-4607

Mougou A., Dutech C. & Desprez-Loustau ML. (2008) New insights into the identity and origin of the causal agent of oak powdery mildew in Europe. Forest Pathology 38:275-287 (pdf)

Dutech, C., Enjalbert, J., Fournier, E., Delmotte, F., Barrès, B., Carlier, J., Tharreau, D., Giraud, T. (2007) Challenges of microsatellite isolation in fungi. Fungal Genetic and Biology 44:933-949. (pdf)

Austerlitz F., C. Dutech, V. L. Sork, F. W. Davis, & P. E. Smouse. (2007) Estimating anisotropy of pollen dispersal: the case of Quercus lobata. Heredity 99:193-204. (pdf)

Breuillin, F., Dutech, C. & Robin, C. (2006) Genetic diversity of the chestnut blight fungus Cryphonectria parasitica within four French populations assessed by microsatellite loci. Mycological Research 110: 288-296 (pdf)

Dutech, C., Sork, V.L., Irwin, A.J., Smouse, P.E. & Davis, F.W. (2005) Gene flow and fine-scale genetic structure in a wind-pollinated tree species, Quercus lobata (Fagaceaee). American Journal of Botany 92: 252-261. (pdf)

Austerlitz, F., Dick, C., Dutech, C., Klein, E.K., Oddou-Muratorio, S., Smouse, P.E. & Sork, V.L. (2004) Using genetic markers to estimate the pollen dispersal curve. Molecular Ecology 13: 937-954. (pdf)

Dutech, C., Joly, H.I. & Jarne, P. (2004) Gene flow, historical population dynamics and genetic diversity within French Guianan populations of a rainforest tree species, Vouacapoua americana. Heredity 92: 69-77. (pdf)

Dutech, C., Maggia, L., Tardy, C., Joly, H.I. & Jarne, P. (2003) Tracking a genetic signal of extinction-recolonization events in a neotropical tree species: Vouacapoua americana Aublet in French Guiana. Evolution 57: 2753-2764. (pdf)

Dutech, C., Seiter, J., Petronelli, P., Joly, H.I. & Jarne, P. (2002) Evidence of low gene flow in a neotropical tree species in two forest stands of French Guiana. Molecular Ecology 11: 725-738. (pdf)