Description du projet
Repenser le riz: une révolution nutritionnelle durable
Le phosphore (P) représente un élément essentiel pour les plantes, mais une ressource planétaire limitée. Sa faible disponibilité dans les sols agricoles a contraint les agriculteurs à utiliser des engrais P de manière excessive, ce qui constitue une menace pour notre environnement, et en particulier pour les masses d’eau libres. Le riz, troisième céréale la plus produite au monde, n’utilise efficacement que 25 % du phosphore. Avec le soutien du programme Actions Marie Skłodowska-Curie, le projet P-use efficient rice vise à améliorer à la fois l’efficacité de l’utilisation du phosphore et la valeur nutritionnelle du riz. Ce projet étudiera le rôle des pyrophosphates d’inositol (PP-InsPs) dans la signalisation et l’homéostasie du P. Ses travaux pourraient permettre d’améliorer génétiquement les cultivars de riz, d’accroître l’efficacité de l’utilisation du phosphore et de réduire la teneur en phytates des semences, ce qui augmenterait la biodisponibilité des micronutriments.
Objectif
Phosphorus (P) is one of the most important molecules having a role in almost every aspect of plant metabolism. So, a constant supply of P and its efficient use as Pi are necessary to sustain plant growth, development and yield. However, in most of the agricultural lands, Pi is poorly available to plants. In order to overcome the consequences of Pi deficiency, farmers have adopted excessive and routine application of P fertilizers, causing serious impacts on the environment. There are two main concerns regarding the excessive use of P fertilizers. On one hand, erosion by water and wind results in P runoff into open water bodies, causing a major threat to planetary health. On the other hand, P deposits represent a limited resource on our planet. Additionally, some P forms within the plant (such as phytate) are crucial to determine micronutrient availability for the human nutrition and animal feed. Therefore, there is an urgent need to understand the functional aspects of Pi sensing, transport, signaling and remobilization, and, thus, it is imperative to develop crops with enhanced PUE (P Use Efficiency) and micronutrient availability to support a more sustainable agriculture system. Although rice counts for the third-most produced cereal crop in the world, it is limited to have only 25% PUE, providing an enormous scope for improvement in P nutrition. In this line, we propose to investigate the synthesis and physiological roles of inositol pyrophosphates (PP-InsPs) in Pi signaling and homeostasis to improve the nutritional value of rice. The proposed research will help to better understand how PP-InsPs control PUE, and will provide the knowledge to reduce phytate content in rice seeds, thereby increasing micronutrient bioavailability without compromising plant immunity, health and yield. In short, the discoveries will help to enhance PUE, preserve P-deposits, mitigate the detrimental consequences of excessive P-fertilization and improve the nutritional value of rice.
Champ scientifique
- agricultural sciencesagriculture, forestry, and fisheriesagriculturesustainable agriculture
- natural sciencesphysical sciencesastronomyplanetary sciencesplanets
- medical and health scienceshealth sciencesnutrition
- medical and health sciencesbasic medicinephysiologyhomeostasis
- agricultural sciencesanimal and dairy sciencedomestic animalsanimal husbandryanimal feed
Mots‑clés
Programme(s)
- HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme
Régime de financement
HORIZON-TMA-MSCA-PF-EF - HORIZON TMA MSCA Postdoctoral Fellowships - European FellowshipsCoordinateur
53113 Bonn
Allemagne