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Plants seeking iron: unraveling the molecular mechanisms involved in iron-mobilizing coumarins distribution and trafficking

Project description

The mechanisms underlying iron-mobilising coumarins in crops

Iron (Fe) deficiency-induced anaemia affects billions of people around the world. However, this could be mitigated by improving the ability of plants to absorb and store this micronutrient to provide adequate dietary Fe to the global population. The secretion in the soil of root-borne coumarins has been found to be a key factor affecting Fe uptake in non-grass species. However, the mechanisms affecting coumarin storage and trafficking within plant roots are not well understood. The EU-funded PlantSeeFe project will address this knowledge gap by characterising novel Arabidopsis coumarin transporters to determine their precise function in coumarin trafficking and plant Fe nutrition.

Objective

Iron (Fe) is an essential micronutrient for the productivity of crops and the quality of their derived products. Fe deficiency-induced anemia affects billions of people worldwide. This could be mitigated by improving the capacity of plants to absorb and store Fe, which will help to provide adequate dietary Fe to the growing global population. Decrypting the molecular mechanisms plants have evolved to acquire Fe from the soil is essential for reaching this objective. Recently, the secretion in the soil of root-borne coumarins has emerged as a key factor affecting Fe uptake in non-grass species. However, the mechanisms that modulate coumarin storage and trafficking within plant roots are not well understood. The candidate has coupled microarray data mining with in vivo coumarin transport assays and identified four novel Arabidopsis coumarin transporters, namely NPF7.2 NPF2.3 NPF2.4 and NPF2.5. The objective of this project is to determine the precise function of each of these four transporters in coumarin trafficking and plant Fe nutrition. In work package 1 (WP1), the coumarin transport activities of NPF candidates will be examined in detail using yeast cells and Xenopus oocytes. Moreover, we will generate single (insertion/transposon lines) and multiple (CRISPR/Cas9) mutants in order to precisely define the role of each NPF in plant roots. Next, in vivo imaging of coumarin and NFP candidate protein localization will be conducted to ascertain the role of each candidate in the spatiotemporal distribution of coumarins within the roots (WP2). Finally, the posttranslational regulation of the NPF candidates will be investigated using proteomic approaches (WP3). The proposed project is both feasible and appropriate for a Marie Skłodowska-Curie Individual Fellowship, since the expected outcomes are innovative and will generate knowledge for both fundamental and industrial research, while the candidate will improve his skills and knowledge in a specialized research area.

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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-2020

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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.

€ 196 707,84
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147 RUE DE L'UNIVERSITE
75007 PARIS CEDEX 07
France

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

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

€ 196 707,84
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