5 results on '"Saubin, Méline"'
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2. Improving the design of sustainable crop protection strategies thanks to population genetics concepts
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Saubin, Méline, Louet, Clémentine, Bousset, Lydia, Fabre, Frédéric, Fudal, Isabelle, Grognard, Frédéric, Mailleret, Ludovic, Stoeckel, Solenn, Touzeau, Suzanne, Petre, Benjamin, Halkett, Fabien, Interactions Arbres-Microorganismes (IAM), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut de Génétique, Environnement et Protection des Plantes (IGEPP), 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Santé et agroécologie du vignoble (UMR SAVE), Université de Bordeaux (UB)-Institut des Sciences de la Vigne et du Vin (ISVV)-Ecole Nationale Supérieure des Sciences Agronomiques de Bordeaux-Aquitaine (Bordeaux Sciences Agro)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), BIOlogie et GEstion des Risques en agriculture (BIOGER), AgroParisTech-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Biological control of artificial ecosystems (BIOCORE), Inria Sophia Antipolis - Méditerranée (CRISAM), Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Laboratoire d'océanographie de Villefranche (LOV), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), 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), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-INSTITUT AGRO 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), Université Nice Sophia Antipolis (1965 - 2019) (UNS), and 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)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Université Côte d'Azur (UCA)
- Subjects
[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[MATH.MATH-GM]Mathematics [math]/General Mathematics [math.GM] ,food and beverages ,[SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis - Abstract
Cropping genetically resistant plants allows to control pathogen populations while substantially reducing chemical inputs. However, resistances are often quickly defeated by pathogens. In this context, how can sustainable crop protection be achieved? This question has shaped the debate about the durability of genetic resistances in agriculture for decades, and, despite active research efforts, has not been satisfactorily answered yet. Here we demonstrate from a bibliography analysis that the research field of resistance durability evolved into two non-overlapping directions: (i) the subfield of 'epidemiology and evolution', which aims to forecast and explain pathogen population dynamics; (ii) the subfield of 'molecular interactions', which studies the molecular processes involved in the overcoming of resistance and in the dialogue between plants and pathogens. After reviewing briefly these two subfields and the gap between the corresponding research communities, we propose strategies to merge these approaches into one by using the concepts of population genetics. Ultimately, such new eco-evolutionary studies could be used to determine the best strategy for the deployment of genetically resistant cultivars by integrating, from gene to landscape, all relevant and contextual biological knowledge into sound theoretical models.
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- 2021
3. Impact of ploidy and pathogen life cycle on resistance durability
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Saubin, Méline, De Mita, Stéphane, Halkett, Fabien, Interactions Arbres-Microorganismes (IAM), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and HALKETT, Fabien
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[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[MATH.MATH-GM]Mathematics [math]/General Mathematics [math.GM] ,[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry ,[SDV.GEN.GPO] Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[MATH.MATH-GM] Mathematics [math]/General Mathematics [math.GM] ,[SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis ,[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry ,ComputingMilieux_MISCELLANEOUS ,[SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis - Abstract
International audience
- Published
- 2021
4. From population genomics to molecular approaches to identify and analyse the first avirulence gene in the poplar rust fungus Melampsora larici-populina
- Author
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Louet, Clémentine, Saubin, Méline, Persoons, Antoine, Andrieux, Axelle, Fabre, Bénédicte, Pétrowski, Jérémy, de Mita, Stéphane, Frey, Pascal, Duplessis, Sébastien, Halkett, Fabien, Interactions Arbres-Microorganismes (IAM), Université de Lorraine (UL)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and HALKETT, Fabien
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[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[SDV.SA.SF]Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry ,[SDV.GEN.GPO] Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis ,[SDV.SA.SF] Life Sciences [q-bio]/Agricultural sciences/Silviculture, forestry ,ComputingMilieux_MISCELLANEOUS ,[SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis - Abstract
International audience
- Published
- 2020
5. Evolutionary dynamics of virulence spread: effects of life cycle, genetic determinism and host resistance deployment
- Author
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Saubin, Méline, Louet, Clémentine, De Mita, Stéphane, Persoons, Antoine, Andrieux, Axelle, Pétrowski, Jérémy, Fabre, Bénédicte, Frey, Pascal, Halkett, Fabien, Interactions Arbres-Microorganismes (IAM), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), and HALKETT, Fabien
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[SDV.GEN.GPO]Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[SDV.BID.EVO]Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] ,fungi ,[SDV.BID.EVO] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE] ,[SDV.GEN.GPO] Life Sciences [q-bio]/Genetics/Populations and Evolution [q-bio.PE] ,[SDV.EE.IEO] Life Sciences [q-bio]/Ecology, environment/Symbiosis ,[SDV.EE.IEO]Life Sciences [q-bio]/Ecology, environment/Symbiosis - Abstract
International audience; Melampsora larici-populina is a partially asexual basidiomycete fungus responsible for poplar rust, with its sexual stage on larch (Larix sp.) and its asexual stage on poplar (Populus sp.). Resistant 7 poplar cultivars were widely planted in northern France until a major resistance breakdown which occurred in 1994. This selective event lead to a rapid and complete shift in the pathogen population. Two independent mutations are responsible for the virulent recessive allele: a SNP and a deletion. Here we study the dynamics of virulence allele fixation both theoretically and empirically, by modeling virulence fixation in different evolutionary scenarios, and by tracing back the polymorphism evolution at the candidate locus before, during and after the resistance breakdown. The modeling part highlighted the interplay between the life cycle (host alternation or not) and the extent of resistance deployment on the probability and dynamics of fixation. Fluorescence ratio methods allowed us to successfully characterize genotypes of reference strains. This method will be applied to nearly 300 isolates collected from 1988 to 2016. By linking our model results and the observed polymorphism evolution in the studied populations, we will investigate whether the combined presence of the deletion and the mutation conferring virulence may have led to such a rapid and complete replacement of the pathogen population.
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- 2019
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