CE20 - Biologie des animaux, des organismes photosynthétiques et des microorganismes

First holistic functional exploration of a marine photosymbiosis using the new model organism Symsagittifera roscoffensis – Animalga

Submission summary

The main drawback of the coral-algae model is that the microalgae Symbiodinium are refractory to molecular biology techniques, which seriously restrict any functional exploration. In this proposal, this obstacle is circumvented by the use of a new emerging model, the photosymbiotic worm Symsagittifera roscoffensis. This flatworm establishes a sustainable photosymbiosis with a green alga Tetraselmis convolutae. This symbiotic association has many major assets (i) a complete life cycle of worms amenable in laboratory conditions (ii) a functional approach on the green algae The aim of the ANIMALGA project is therefore to combine a functional approach on the photosymbiont T. convolutae and the use of free-algae juvenile worms as high throughput screenings to isolate Tetraselmis mutants impaired in photosymbiotic relationship. This proposal offers a major breakthrough for exploring marine photosymbioses in particular in the light of oxygen as a key component driving photosymbiosis.

Project coordination

Christophe COLLEONI (UMR 8576 - Unité de glycobiologie structurale et fonctionnelle)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.


UGSF UMR 8576 - Unité de glycobiologie structurale et fonctionnelle
SBR Station biologique de Roscoff
InBios Université de Liège / Institut de Botanique-Génétique et Physiologique des micro algues

Help of the ANR 442,324 euros
Beginning and duration of the scientific project: May 2022 - 48 Months

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