En savoir plus

Research scientist at INRAE Rennes, France – Joint Laboratory for Genetics, Environment and Plant Protection (IGEPP)

Date of birth: 28^th May 1980

https://cv.archives-ouvertes.fr/josselin-montarry

Contact address

UMR1349 IGEPP, INRAE – Agrocampus Ouest – Université Rennes1, Domaine de la Motte, BP 35327, 35653 Le Rheu Cedex, France

Career

Since 2010: INRAE scientist (CR1) at INRAE Rennes (France), nematodes (Globodera, Heterodera) – potato, beet, tobacco.

2008-2010: Post-doc fellowship at INRA Avignon (France), virus (PVY, CMV) – pepper.

2007-2008: Post-doc fellowship at INRA Bordeaux (France),Erysiphe necator– vine.

2004-2007: PhD at INRA Rennes (France),Phytophthora infestans– potato. 

Research interests and Expertise

The study of the sustainability of agricultural systems in general, and of the available tools to manage pests in particular, is a central challenge currently facing agricultural research. My research topic is the durability of plant resistances to parasites, and my career path has led me to work on oomycetes, fungi, virus and nematodes. The emergence of plant parasite populations adapted to resistant cultivars (qualitative and quantitative resistances) puts, sometimes very quickly, an end to that way to manage parasites, which is already the less dependent towards phytosanitary inputs and thus central into programs of integrated protection of crops.

In order to identify useful criteria to include the durability of plant resistances into the schemes of selection and of deployment of resistances, I assess, by combining approaches of experimental evolutions and of population genetics, the relative part of the evolutionary forces involved during resistance breakdowns, that is to say during the appearance of virulent individuals into avirulent populations, during their multiplication in the population and then during their dispersal at the landscape scale.

Ten selected publications

Eoche-Bosy D., Gautier M., Esquibet M., Legeai F., Bretaudeau A., Bouchez O., Fournet S., Grenier E. and Montarry J. (2017) Genome scans on experimentally evolved populations reveal candidate regions for adaptation to plant resistance in the potato cyst nematode Globodera pallida. Molecular Ecology  26: 4700-4711. DOI

Pilet-Nayel M.L., Moury B., Caffier V., Montarry J., Kerlan M.C., Fournet S., Durel C.E. and Delourme R. (2017) Quantitative resistance to plant pathogens in pyramiding strategies for durable crop protection. Frontiers in Plant Science  8: 1838. DOI

Kröner A., Mabon R., Corbière R., Montarry J. and Andrivon D. (2017) The coexistence of generalist and specialist clonal lineages in natural populations of the Irish Famine pathogen Phytophthora infestans explains local adaptation to potato and tomato. Molecular Ecology  26: 1891-1901. DOI

Pasco C., Montarry J., Marquer B. and Andrivon D. (2016) And the nasty ones lose in the end: foliar pathogenicity trades off with asexual transmission in the Irish famine pathogen Phytophthora infestans. New Phytologist 209: 334-342. DOI

Montarry J., Jan P.L., Gracianne C., Overall A.D.J., Bardou-Valette S., Olivier E., Fournet S., Grenier E. and Petit E.J. (2015) Heterozygote deficits in cyst plant-parasitic nematodes: possible causes and consequences. Molecular Ecology 24: 1654-1667. DOI

Fournet S., Kerlan M.C., Renault L., Dantec J.P., Rouaux C. and Montarry J. (2013) Selection of nematodes by resistant plants has implications for local adaptation and cross-virulence. Plant Pathology 62 : 184-193. DOI

Fabre F., Montarry J., Coville J.*, Senoussi R., Simon V. and Moury B. (2012) Modelling the evolutionary dynamics of viruses within their hosts: a case study using high-throughput sequencing. PLoS Pathogens 8: e1002654. DOI

Montarry J., Doumayrou J., Simon V. and Moury B. (2011) Genetic background matters: A plant-virus gene-for-gene interaction is strongly influenced by genetic contexts. Molecular Plant Pathology 12: 911-920. DOI

Montarry J., Hamelin F.M., Glais I., Corbière R. and Andrivon D. (2010) Fitness costs associated with unnecessary virulence factors and life history traits: evolutionary insights from the potato late blight pathogen Phytophthora infestans. BMC Evolutionary Biology 10: 283. DOI

Montarry J., Andrivon D., Glais I., Mialdea G., Corbière R. and Delmotte F. (2010) Microsatellite markers reveal two genetic groups in the French population of the invasive plant pathogen Phytophthora infestans. Molecular Ecology  19: 1965-1977. DOI