Objectif The ocean is one of the largest carbon reservoirs on Earth, absorbing 30% of anthropogenic CO2. It also contains an amount of carbon in the form of oceanic dissolved organic matter (OM; 660 Gt) similar to that in atmospheric CO2 (829 Gt). Hence knowing how this organic matter is cycled has interest in the study of the planetary carbon cycle. Bacterioplankton (the community of heterotrophic prokaryotes composed by bacteria and archaea, hereafter bacteria) play a key role in OM processing throughout all aquatic ecosystems, with consequences on the cycling of carbon and other elements. Although bacterial consumption and reprocessing of OM has been extensively studied, the production of refractory DOM (RDOM) by bacteria, or the so-named microbial carbon pump, is a recent and relatively unknown concept with large consequences on carbon storage and cycling in the ocean. The main objective of the CARAMBA project is to better understand the taxonomic, genomic and metabolic underpinnings of the bacterial production of refractory DOM through the microbial carbon pump. For this purpose, we will combine for the first time laboratory work with single bacterial strains with OM characterization using cutting-edge techniques and genomics/transcriptomics work. Using this approach we will be able to identify the main organic compounds produced by bacteria and the expressed genes, thus the underlying mechanisms, involved in such processes. Champ scientifique natural scienceschemical sciencesorganic chemistrynatural sciencesbiological sciencesmicrobiologybacteriologynatural sciencesearth and related environmental scienceshydrologylimnologynatural sciencesearth and related environmental sciencesatmospheric sciencesclimatologyclimatic changesnatural sciencesbiological sciencesbiochemistrybiomoleculesproteinsenzymes Mots‑clés CARAMBA Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Thème(s) MSCA-IF-2015-EF - Marie Skłodowska-Curie Individual Fellowships (IF-EF) Appel à propositions H2020-MSCA-IF-2015 Voir d’autres projets de cet appel Régime de financement MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinateur CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE CNRS Contribution nette de l'UE € 185 076,00 Adresse RUE MICHEL ANGE 3 75794 Paris France Voir sur la carte Région Ile-de-France Ile-de-France Paris Type d’activité Research Organisations Liens Contacter l’organisation Opens in new window Site web Opens in new window Participation aux programmes de R&I de l'UE Opens in new window Réseau de collaboration HORIZON Opens in new window Coût total € 185 076,00
