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UNDERSTANDING TRITROPHIC INTERACTIONS: PLANT-MICROBE-INSECT. ITS IMPLICATION ON INTEGRATED PLANT PROTECTION AND BIOLOGICAL NITROGEN FIXATION OF LEGUMES

Project description

Validating an innovative pest control strategy for legume crops

The symbiotic relationship between legume crops and nitrogen-fixing bacteria greatly improves soil fertility. However, insect attacks or microbe infections of roots can hamper this capacity for nitrogen fixation. Traditionally, pest control uses chemical pesticides, but their overuse has resulted in pest resistance. The MSCA-funded TRITRONITRO project proposes to test a sustainable pest management strategy to control root-damaging pathogens and insects. Pea crops will be inoculated with natural entomopathogenic fungi to examine the tritrophic interactions among plant, microbes, and insects. The project will determine whether the fungi can effectively invade plant and nodule tissues to protect plants from pathogens and insects, thus preserving biological nitrogen fixation.

Objective

Biological nitrogen fixation (BNF) is one of the key agroecosystem services provided by legumes. Legume crops have a positive impact on the atmosphere and soil quality: i) by lowering emissions of greenhouse gases compared with other crops grown under mineral fertilisation and ii) by supporting BNF to the following crop when grown as components of crop rotations. This results in cost savings on synthetic fertilisers and fossil energy inputs in the system and on tillage, due to improved soil structure. However, factors such as insect attack, foliar disease and root microbial infection have a direct or indirect influence in reducing nitrogen fixation capacity and yield. Therefore, control of root-feeding organisms is essential for maximisation of nitrogen uptake by legumes. Conventionally, agrochemicals have been used to protect legume crops from pest and diseases, but their indiscriminate use has resulted in pest resistance and secondary pest resurgence, and they are detrimental to beneficial organisms for crop defence. The importance of driving reforms in response to the European commitment to sustainable agriculture and food production is directing my research interests towards a long-term mission that enables implementation of a new agricultural concept regarding food production that is safer for humans and the environment. The proposed project will use peas as a plant model to look for innovative strategies for reducing the dependence on chemical inputs, applying cutting edge technologies to leverage the use of beneficial soil microbes in the crop system. I suggest a pest management strategy to control nodule feeder insects by means of entompathogenic fungi (EPF). By exploring tritrophic interactions in plant-microbe-insect relations, this action seeks to evaluate whether EFP inoculated into legume crops can invade plant and nodule tissues, protect plants from pathogens and insects, influence BNF and affect the behavioural responses of aboveground insects.

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Programme(s)

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Topic(s)

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MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF)

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Call for proposal

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(opens in new window) H2020-MSCA-IF-2017

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Coordinator

INSTITUT NATIONAL DE RECHERCHE POUR L'AGRICULTURE, L'ALIMENTATION ET L'ENVIRONNEMENT
Net EU contribution

Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.

€ 185 076,00
Address
147 RUE DE L'UNIVERSITE
75007 Paris
France

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Region
Ile-de-France Ile-de-France Paris
Activity type
Research Organisations
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Total cost

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€ 185 076,00
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