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Master Thesis

Étude du niveau constitutif des défenses basales du pommier en tant que facteur prédictif de résistance (tavelure et feu bactérien) et d’efficacité des stimulateurs de défense des plantes

Abstract : The apple is one of the most consumed and produced fruit in the world and in France it is the first production of fresh fruit of the country. In recent years apple consumption has risen slightly but its culture is debated. Indeed, to protect the orchards and respect the marketing criteria, the apple is the most processed fruit. In the current context, reducing the use of plant protection products is a major issue. It is within this framework that the ResPom team of the Institut de Rechercher en Horticlture et Semences (IRHS) proposed the PREDIRE project (PREDIction of REsistance in apple) in 2016. The starting hypothesis is that the level basal defenses are responsible for the plant's ability to resist and control pest attacks and plant defender stimulator (PPS) efficiency. The study presented in this dissertation corresponds to several phases of work carried out to explore this hypothesis. To begin, the constitutive expression of a panel of 11 defense genes was evaluated on a population of 32 genotypes selected for their diversity of resistance to scab and fire blight. This population was also used to evaluate the effectiveness of Bion® against these same pests. Then to strengthen the analyses, the constitutive expression of the panel was evaluated on an extension of 29 genotypes. We were able to analyze the correlation between the constitutive expression of defense genes and pest resistance and the effectiveness of Bion®.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-02410001
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Submitted on : Friday, December 13, 2019 - 4:14:24 PM
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Camille Pubert. Étude du niveau constitutif des défenses basales du pommier en tant que facteur prédictif de résistance (tavelure et feu bactérien) et d’efficacité des stimulateurs de défense des plantes. Sciences du Vivant [q-bio]. 2019. ⟨dumas-02410001⟩

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