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Objectif Végétal : une dynamique partenariale

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    Contents

    • Biocontrol products: definitions and work in progress
    • Auxilary macro-organisms
    • Chemical mediators
    • Natural substances
    • Living microorganisms
    • Focus on PRIs
    • Biocontrol through plant diversity

    Biocontrol products: definitions and work in progress

    Auxilary macro-organismes

     

    Invertebrates, insects, mites or nematodes. Modes of action: parasitoids, predators or entomopathogenic nematodes.

     

     

     

    The EGI (Ecology and Genetics of Insests) team of IGEPPAuxilary macro-organismes
    , in collaboration with LARIS, Plante&Cité, FREDON PACA, KOPPERT and IF TECH, has developed an integrated biological protection strategy with the use of a nematode and an auxiliary insect, which has led to commercial products (Tigranem,Tigrador). A tool also been created to quantify leaf discolouration and evaluate the effectiveness of biocontrol products - PETAAL projet - (2009 - 2012) – FUI funds.


     

     

     

    Bruno Jaloux

    bruno.jaloux @ agrocampus-ouest.fr

     

     

    Chemical mediators

     

    Insect pheromones and kairomones. Modes of action: sexual confusion, mass entrapment.

     

     

    Chemical mediators

    The EGI team of IGEPP has shown that low doses of neonicotinoids promote the reproduction of pests by stimulating their sense of smell - PHEROTOX projet (2012-2016) - ANR funds
    The potential interactions between low doses of insectmust be taken into account when using them for biocontrol.

     


     

     

     

    Sylvia Anton

    sulvia.anton @ inra.fr

     

    Natural substances

     

    Substances of plant, animal, microbial and mineral origin. Modes of action: direct effect on the pest or stimulation of the defenses of the plant.

     

    Natural substances
    During her PhD thesis at LBPV, Sabine Tourneur evaluates the role of miPEPs (new class of regulatory peptides) in controlling the interaction between sunflower and the parasitic plant orobanche - miPEPITO project (2017-2020) in collaboration with MicroPEP Technologies - ANR funds.

     

    Philippe Delavault

     

     

    Philippe Delavaut

    philippe.delavault @ unv-nantes.fr

     

     

     

     

     


    IRHS
    is studying the ability of secondary metabolites extracted from microorganisms to induce plant defenses (qPFD® test) or inhibit the growth of phytopathogenic fungi - NABUCO Projet (2015-2018) in collaboration with Agrauxine - Lesaffre Plant Care - Ministry of Agriculture funds.

     

    Thomas Guillemette

     

     

     

    Thomas Guillemette

    thomas.guillemette @ univ-angers.fr

     

     

     

     


    IRHS
    and SONAS have patented natural substances capable of marking pests more ensitive to plant defenses.

    These "sensitines" could act in synergy with PRIs (Plant Resistance Inducers).

     

     

     

     

     

    Living microorganisms

     

    Fungi, bacteria, viruses. Modes of action: direct effect o the pest, nutritional or spatial competition, stimulation of the defenses of the plant.

     

     

    Living microorgamisms
    IRHS
    identifies microorganisms that are aggressive to phytopathogenic fungi -NABUCO project (2015-2018) in collaboration with Agrauxine - Lesaffre Plant Care - Ministry of Agriculture funds.

    Thomas Guillemette

     

     

     

     

    Thomas Guillemette

    thomas.guillemette @ univ-angers.fr

     

     

     

     

    Living microorganisms
    Samir Rezki's thesis (2014-2017) at IRHS studied the behaviour of microbiota associated with seeds during the transmission of phytopathogenic agents - MetaSEED project (2014-2016) in collaboration with HM Clause and Vilmorinfunded by Région Pays de la Loire

    Microbial populations could thus be identified as potential biocontrol agents capable of competing with plant pathogens transmitted by/to seeds.

     

    Mathieu Barret

     

     

     

    Matthieu Barret

    matthieu.barret @ inra.fr

     

     

     

     

    FOCUS on PRIs

    Plant Resistance Inducers (PRIS): any no-pathogenc micro organism cabalbe of promoting resistance in plants to biotic stress. http://elicitra.org/

     

    PRIs

     

    IRHSand UEH are working on the integration of PRIs in the management of apple orchards under production conditions (PEPS project - 2014-2018 – Casdar funds and Tavinnov projet -2017-2020- SMaCH INRA meta-programme funds): are particularly studied factors influencing the effectiveness of PRIs (environment, inputs, others), the sustainability of this protection strategy.

     

    Marie-Noelle Brisset

     

    Marie-Noelle Brisset

    marie-noelle.brisset @ inra.fr

     

     

     

     

     

    Romain Warneys' PhD thesis, carried out at IRHS as part of the Pomme d'épi project (2016-2019 - funded by RFI Objectif Végétal) and Michaela Skopikova's PhD thesis at SONAS (2017-2020), aim to explore the mode of action of PRIs at different levels (epignetic, transcriptomoc, protein and metabolic) in apple trees.

     Alexandre Degrave

     

     

    Alexandre Degrave

    alexendre.degrave@agrocampus-ouest.fr

     

     

     

     

     

     

    PRIs

    The effectiveness of PRIs depends on the physiological state of the plant, which is partly conditioned by abiotic stress IRHS is developing tools for evaluating this physiological state,
    based on expression of stress marker genes and imaging techniques (ESTIM project: joint laboratory with SAS Arexhor Pays de la Loire - ANR LabCom funds) and activation of transposable elements.

     

    Mathieu Gaucher

     

    Mathieu Gaucher

    mathieu.gaucher @ inra.fr

     

     

     

     

    IRHS seeks to combine constituent defenses, QTLs partial genetic resistance and PRIs to control apple scab. This is the subject of Juliette bénéjam's PhD thesis (2017-2020), associated with the PREDIRE project (2016-2019 - funded by RFI Objectif Végétal) and QTLstim Project (2017-2020 – INRA funds).

    Charles-Eric Durel

     

     

     

    Charles-Eric Durel

    charle-eric.durel@inra.fr

     

     

     

     

    PRIs

    Among the defense genes induced by PRIs, some are involved in the production of volatile organic compounds. IRHS and EGI team of IEPP are studying PRI's ability to modify the behaviour of the aphid by olfactometry and ElectroPenetroGraphy.

     

    Sylvia Anton

     

     

     

    Sylvia Anton

    sylvia.anton @ inra.fr

     

     

     

     

    Biocontrol through plant diversity

     

     

    Bicontrol, biodiversity

    Agricultural pratices, the flora of the field and its border, agricultural landscape are major determinants of biological control. A conceptual model integrating
    them is being developed at EGI team of IGEPP - PEERLESS project (2013-2017) – funded by ANR Agrobiosphère and Chaire AEI. Anna Pollier's thesis improved flower strips for the biological control of insect pests of rapeseed and wheat.

    Yann Tricault

     

     

    Yann Tricault

    yann.tricault@agrocampus-ouest.fr

     

     

     

     

     

    Biocontrol, biodiversity

     

    Nicolas Carton's PhD thesis at LEVA made it possible to propose combinations of lupine and cereals to control weeks while ensuring the productivity of both crops.

     

    Guenaëlle Hellou

     

     

    Guenaëlle Hellou

    ghellou @ groupe-esa.fr

     

     

     

     

     

     

     

    Bicontrol, diversity

     

    Associated crops can also provide food resources for auxiliaires; Martin Luquet's PhD thesis at EGI team of IGEPP (2016-2019) focuses on parasitoids of aphids in cereal-protein associations.

    Bruno Jaloux

     

     

     

    Bruno Jaloux

    bruno.jaloux @ agrocampus-ouest.fr

     

     

     

     


     

    LBPV seeks to indentify legume species with negatives allelopathic activitity in relation to the rowing orobanch, with a view to associating them with rapessed crops - PHERAFAB projet (2014-2017) - CASDAR funds

     

    Philppe Simier

     

     

     

    Philippe Simier

    philippe.simier @ univ-nantes.fr

     

     

     

     

     

    Biocontrol, diversity

     

    Mixing varieties or species of different resistances helps to limit the spread of pets and slow down resistance circumvention. A mathematical model has been developed at the IRHS to design these mixtures according to the constraints of the plot, and successfully used in the projets Vergers cidricoles de demain (2012-2014 then 2015-2018) - CASDAR funds.

    Model usable on all crops, at plot, farm or landscape scale.

     

     

     

    Nathalia Sapoukhina

     

     

     

    Nathalia Sapoukhina

    nathalia.sapoukhina @ inra.fr

     

     

     

     

    Next page

    Contact

    Looking for partners?

    Two contacts to support your projects:

    • Emeline Defossez,


    contact to support your R&D projects and put you in touch

     

    emeline.defossez@

    vegepolys.eu

     

     

    • Tanegmart Redjala


    Close interface with the laboratoires of the Federative Research Structure "Quasav"

     tanegmart.redjala@univ-angers.f (tanegmart.redjala @ univ-angers.fr)