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Objectif Végétal : une dynamique partenariale

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    Seed maturation/conservation

    When the seed perceives a pathogenic agent, there is a trade-off between the activation of its basal defences and its own development:

    Activation of genes involved in the establishment of defence mechanisms

    Slowdown of seed maturation process (reduction of the TKW and chlorophyll retention)

    Proteic and biochemical molecular markers for seed maturity and longevity have been identified in field crop and vegetable crop species:

    • LEA proteins (Late Embyogenesis Abudant)
    • Sucrose/oligosaccharides ratio

    Some genes involved in defence mechanisms have been shown to regulate seed longevity.

    Approaches of gene co-expression networks were developed to:

    • Decipher the molecular bases of seed vigour acquisition, and thus identify the key regulator genes that have been conserved between species
    • Better understand the seed development dynamic in optimal and stressful conditions



    Olivier Leprince

                     Professor, Agrocampus-Ouest,

    team ConcerTo, UMR IRHS
    olivier.leprince @ agrocampus-ouest.fr



    Seedling establishment

    Exploration of genetic diversity enabled to identify the key physiological characteristics of hypocotyl for successful sprout in abiotic stress conditions:

    • The high number of cells in the embryo
    • The high ability  for cell lengthening in disadvantageous conditions

    QTL were identified for these characteristics.

    Identification of a membrane transporter that regulates nitrate absorption and root architecture in seedlings.


    Béatrice Teulat

    Teacher-researcher, Agrocampus-Ouest,
    leader of SESaN team, UMR IRHS

    beatrice.teulat @ agrocampus-ouest.fr


    Anis Limami

    Teacher-researcher, Angers University,
    team SESaN, UMR IRHS
    anis.limami @ univ-angers.fr



    These investigations are done thanks to the shared

    equipements of SFR QUASAV  :

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    Looking for partners?

    Two contacts to support your projects:


    • Aurore Gautier,

    contact to support your R&D projects land to put you through

    aurore.gauthier @ vegepolys.eu


    • Tanegmart Redjala,

    close interface with the laboratories of the Research Federative Structure Quasav.

    tanegmart.redjala @ univ-angers.fr