Gaëlle Toullec
Gaëlle Toullec
@gaelletoullec.bsky.social
Reposted by Gaëlle Toullec
Excited to share the lab's 1rst preprint! Rapid high-res immunofluorescence is now possible in cultured & environmental diatoms thanks to 4-fold expansion microscopy. A step-change for comparative cell biology in one of the most important phytoplankton groups on the planet 🥳
tinyurl.com/m9s5su7s 1/2
June 17, 2025 at 7:33 AM
Reposted by Gaëlle Toullec
Happy to share our last study led by @akrao.bsky.social published in @currentbiology.bsky.social, showing how a planktonic host steals and hijacks chloroplast and mitochondrion of a microalga using 3D subcellular imaging. Funded by @moorefound.bsky.social; @erc.europa.eu

#Protistsonsky #SymbioSky
April 17, 2025 at 7:43 PM
Reposted by Gaëlle Toullec
Very happy to have contributed a tiny tiny piece to this beautiful story by Ananya & @johandecelle.bsky.social & co!
Highlighting the amazing work by our Lab Manager Extraordinaire Marine! Who made some of the most beautiful #UExM images of #dinoflagellates out there with amazing #Rubisco stainings.
New #ISEPpapers! Hijacking and integration of algal #plastids and #mitochondria in a polar planktonic host: Ananya Kedige Rao et al. www.cell.com/current-biol...

#Microbes #Algae #Protists #Symbiosis #Organelles #Plankton
April 18, 2025 at 4:47 PM
Reposted by Gaëlle Toullec
Take a deep dive into the world of cassiosomes and their photosymbionts with @gaelletoullec.bsky.social’s first PhD paper. These autonomous cell structures of rhizostome jellyfish could be exciting model systems to study cnidarian symbioses! 🧫🪸🔬 doi.org/10.1128/msph... @cpogoreutz.bsky.social
December 13, 2023 at 4:50 PM
Reposted by Gaëlle Toullec
Similar to coral bleaching, heat stress disrupts the symbiosis between the upside-down jellyfish Cassiopea and its algal endosymbionts. Check out @gaelletoullec.bsky.social‘s latest paper on why bleaching in Cassiopea can be invisible nonetheless.

@cpogoreutz.bsky.social 🪸🧫🦠🔬

tinyurl.com/yu55ja25
Host starvation and in hospite degradation of algal symbionts shape the heat stress response of the Cassiopea-Symbiodiniaceae symbiosis - Microbiome
Background Global warming is causing large-scale disruption of cnidarian-Symbiodiniaceae symbioses fundamental to major marine ecosystems, such as coral reefs. However, the mechanisms by which heat st...
microbiomejournal.biomedcentral.com
February 29, 2024 at 8:04 AM
Reposted by Gaëlle Toullec
STUDENT TRAVEL GRANTS 7th Annual #Cassiopeaworkshop Key Largo, FL May 10-12, 2024. APPLY HERE by Feb 1st: shorturl.at/AFGY7 Thanks to
the Moore Foundation 🧪🐙🌎
December 7, 2023 at 2:41 AM
Reposted by Gaëlle Toullec
Our paper on resource competition in the cnidarian-algal symbiosis is finally out. shorturl.at/gklxP we show that host and symbiont use photosynthates to fix ammonium. The resulting resource competition shapes the phenotype and defines ecological niche of the symbiosis. @reefgenomics.bsky.social 🪸🦠🔬
Coupled carbon and nitrogen cycling regulates the cnidarian–algal symbiosis - Nature Communication...
Photosymbioses enable efficient nutrient recycling between heterotrophic and phototrophic organisms. This study shows that nutrient cycling in a cnidarian-algal symbiosis is regulated through resource...
shorturl.at
November 2, 2023 at 2:25 PM