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ChloroMosaic

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Environmentally-informed functional characterisation of the secondary red chloro...

Environmentally-informed functional characterisation of the secondary red chloroplast proteome "Photosynthesis in the ocean is as significant as that of land plants, and is performed by a wide range of cyanobacteria and eukaryotic algae, the most abundant of which have originated through the secondary endosymbioses of red a... ver más

31/12/2027

CNRS

1M€

Presupuesto del proyecto: 1M€

Líder del proyecto

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo HORIZON EUROPE notifico la concesión del proyecto el día 2023-01-01

ERC-2021-STG: ERC STARTING GRANTS Scope:Objectives

I+D

Cerrada hace 3 años

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Duración del proyecto: 59 meses Fecha Inicio: 2023-01-01
Fecha Fin: 2027-12-31

Líder del proyecto

CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE... No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 1M€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto "Photosynthesis in the ocean is as significant as that of land plants, and is performed by a wide range of cyanobacteria and eukaryotic algae, the most abundant of which have originated through the secondary endosymbioses of red algae. Previously, I have shown that these ""secondary red chloroplasts"" are evolutionary mosaics, supported by nucleus-encoded proteins of symbiont, host and horizontally acquired origin; and that the most successful of these groups (diatoms, haptophytes and dinoflagellates) are connected to one another via chloroplast endosymbioses. My research programme will answer a question of fundamental importance to the evolutionary history, and future ecology of the planet: why is the secondary red chloroplast so successful in the modern ocean? I will perform next-generation proteomic (LOPIT) characterisation of the dinoflagellate chloroplast, whose composition remains unknown; phylogenomic and spatial reconstruction of the pan-secondary red chloroplast proteome, using environmental sequence data from the Tara Oceans expedition; and phenotyping of proteins via CRISPR/Cas9 mutagenesis in the model diatom Phaeodactylum. I will focus on defining the proteins that underpin the dominant contributions of secondary red chloroplasts to marine primary production; and their unique success in high oceanic latitudes. Thus far, I have characterised a mitochondria-associated transporter that facilitates photo-acclimation in secondary red chloroplasts under Fe limitation; and a complete glycolytic pathway that regulates diatom chloroplast metabolism in polar oceans. The phylogenetically-grounded insights from this project will connect a defining event in eukaryotic evolution, the endosymbiotic evolution of chloroplasts, to the functional biology of marine ecosystems; identify new proteins for optimising photosynthetic production in cultivable species; and define new biomarkers for the resilience of algal communities to anthropogenic climate change."

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