Project description
Study explores how microbial activity affects metal toxicity in the Arctic
Melting glaciers in the Arctic are affecting microbial activity, which in turn encourage the production of reduced organic sulfur (ROS) and organic matter. Certain metalloids have a high affinity for ROS, leading to the formation of complexes that modify the metalloid speciation, bioaccumulation and toxicity. Funded by the Marie Skłodowska-Curie Actions programme, the Fate roS project will further investigate the interaction between ROS and metalloids. Based on original spectroscopic data, researchers will develop a model to predict the toxicity of metalloids alone and of the metalloid-ROS complexes.
Objective
Arctic suffers of the global warming and as a consequence ground- and surface waters are more and more mixed, increasing microbial activities. Because roS are present in all living organisms as amino acids (i.e. cysteine and methionine), increasing microbial activities induce increasing production of reduced organic sulfur (roS) and organic matter (OM). Some metals and metalloids (Me) have a large affinity for roS (i.e. Pt2+, Pd2+, Hg2+, Cd2+, As(OH)3, Sb(OH)3), leading to the formation of ros-Me complexes. The presence of roS modifies thus the fate, speciation (i.e. all chemical and physical forms), bioaccumulation and toxicity of Me. Rate of roS and rate of Me are interconnected: aquatic living organisms produce roS in response to Me stress, in order to modify the speciation of Me, which in turn modifies the bioaccumulation and toxicity of Me. Despite the interconnections of Me and S biogeochemical cycles, such roS-Me forms are neither quantified (i) in the environment (i.e. water), (ii) nor in laboratory ecotoxicological studies, (iii) or in ecotoxicological modelling, and (iv) only partly in laboratory geochemical experiments (i.e. only the model I developed in 2015 consider As association to reduced S of OM). In Fate roS, we will elucidate roS-Me associations through analytical developments dedicated to natural waters, which will be able to quantify roS speciation in boreal waters (including high Arctic). Thanks to a coupling of original experimental and spectroscopic results, a toxicogeochemical model will then be developed to predict the toxicity of Me and Me-roS. A successful scientific and training project is expected due to a cleverly thought 3-way-transfer of complementary skills in between me, my supervisors of the host institution (HI) and the partner institution (PI) such as: Me geochemistry knowledge (me), S biogeochemical cycle and fate in arctic context (PI) and finally Me toxicity (HI).
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- natural sciences earth and related environmental sciences geochemistry
- natural sciences chemical sciences inorganic chemistry metalloids
You need to log in or register to use this function
We are sorry... an unexpected error occurred during execution.
You need to be authenticated. Your session might have expired.
Thank you for your feedback. You will soon receive an email to confirm the submission. If you have selected to be notified about the reporting status, you will also be contacted when the reporting status will change.
Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
-
HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
See all projects funded under this programme
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-GF - HORIZON TMA MSCA Postdoctoral Fellowships - Global Fellowships
See all projects funded under this funding scheme
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2021-PF-01
See all projects funded under this callCoordinator
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.
75794 PARIS
France
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.