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Contenuto archiviato il 2024-05-07

Reduction of the chemical inputs in a vegetable crop by the use of beneficial rhizospheric microorganisms

Obiettivo

The main objectives are as follows :
* To select strains of fluorescent pseudomonads for their rhizospheric competence and glomalean fungi for their symbiotic competence in Argentine and Uruguayan soils.
* To further select among these strains those which are able to suppress soilborne diseases of tomato and to promote plant growth of tomato.
* To characterize some modes of action responsible for the beneficial effects of the selected microorganisms and to describe their interactions with the host-plant in order to determine the conditions of their application.
Expected Outcome

The work carried out in this project should provide microbial strains enabling the reduction of the use of pesticides in tomato crops in Argentina and Uruguay. Inoculation of tomato with these strains should improve plant growth and health. The selected strains should be compatible with other cultural practices. The mode of action of the beneficial microorganisms and interactions with the host plant will be analyzed in order to identify the most favorable environment for the expression of beneficial effects. Guidelines describing the conditions of application of the microorganisms to improve efficacy, could then be given to farmers.
The key activities envisaged are :
* Establishment of a large collection of fluorescent pseudomonads and glomalean fungi. Isolations of bacteria and glomalean fungi will be made from Argentine soils either used for cultivation of tomato or not.
* Characterization of microbial diversity in order to select fluorescent pseudomonads for their rhizosphere competence. Bacterial traits enabling the discrimination of soil and rhizospheric populations will be used to preselect rhizosphere competent strains. Such preselected strains will be subsequently tested for their rhizospheric competence in different soil types from Argentina and Uruguay. Strains of glomalean fungi will also be selected for their symbiotic competence. The effect of soil characteristics on the rhizosphere and on the symbiotic competence of the selected strains will be assessed.
* Selection of strains, for their ability to promote plant growth and/or to suppress tomato diseases, among the rhizosphere and symbiotic competent strains. The beneficial effects of the selected strains will be further tested in commercial conditions specially in naturally infested soils in Argentina. The compatibility of these strains with other cultural practices will be checked.
* Evaluation of the effects of the selected microorganisms on root development of the host plant, infected or not with pathogens. Description of the colonization pattern and cellular and molecular interactions between the host-plant, the pathogens and the beneficial microorganisms. Characterization of microbial metabolites and activities responsible for the beneficial effects on plant growth and plant health.

Campo scientifico (EuroSciVoc)

CORDIS classifica i progetti con EuroSciVoc, una tassonomia multilingue dei campi scientifici, attraverso un processo semi-automatico basato su tecniche NLP. Cfr.: Il Vocabolario Scientifico Europeo.

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Coordinatore

Institut National de la Recherche Agronomique (INRA)
Contributo UE
Nessun dato
Indirizzo
17 rue Sully
21034 Dijon
Francia

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Costo totale

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Partecipanti (5)

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