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Nils Rädecker

@radecker.bsky.social
1.2K followers 602 following 40 posts

Microbial ecologist studying the evolution and breakdown of photosymbiosis. Imaging all things small 🔬and big 📸 alike. Just joined @HIFMB, Germany. 🪸 🔬 🧫

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Reposted by Nils Rädecker
Dr. Claudia Pogoreutz @cpogoreutz.bsky.social · 07/03/2026
I am pleased to share a preprint: Chilling injury to algal symbionts induces host starvation and metabolic reorganization in a temperate cnidarian www.biorxiv.org/content/10.6... #SymbioSky #MicroSky #internationslwomensday @agencerecherche.bsky.social @pure-ocean.bsky.social
biorxiv.org
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Nils Rädecker @radecker.bsky.social · 23/02/2026
𝐖𝐡𝐚𝐭 𝐩𝐫𝐨𝐜𝐞𝐬𝐬𝐞𝐬 𝐠𝐨𝐯𝐞𝐫𝐧 𝐩𝐡𝐨𝐭𝐨𝐬𝐲𝐦𝐛𝐢𝐨𝐬𝐢𝐬 𝐞𝐬𝐭𝐚𝐛𝐥𝐢𝐬𝐡𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 𝐛𝐫𝐞𝐚𝐤𝐝𝐨𝐰𝐧? 🪸 Join us for a 3-year #Postdoc and help us find out! Our ERC-funded project at @hifmb.de offers excellent facilities and an international collaborative work environment. Apply by April 1st: jobs.awi.de/Vacancies/21... #ScienceJobs
jobs.awi.de
Postdoc in "Decoding cellular signaling in Photosymbiosis" (m/f/d/x)
Layout AWI HIFMB extern, englisch
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Nils Rädecker @radecker.bsky.social · 19/02/2026
No science or hidden self-promotion, just a gorgeous Waminoa acoel for you all to adore. @hifmb.de
A flyluorescene image of Waminoa sp.. Host autofluorescence in green, algal autofluorescence  in pink.
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Fabrice Not @fabnot.bsky.social · 14/03/2025
academic.oup.com/ismej/advanc...
academic.oup.com
Metabolic interdependence and rewiring in Radiolaria-microalgae Photosymbioses
Abstract. Marine planktonic Radiolaria harboring symbiotic microalgae are ubiquitous in the oceans and abundant in oligotrophic areas. In these low-nutrien
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Nils Rädecker @radecker.bsky.social · 17/10/2025
Beautiful work on characterizing the symbiosome of Aiptasia. Further evidence that “ongoing digestion” is central to a stable endosymbiosis.
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Nils Rädecker @radecker.bsky.social · 08/10/2025
Bleaching: more than just a coral problem.
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Nils Rädecker @radecker.bsky.social · 06/10/2025
🪸🧪 We’re hiring! Join our ERC-funded group at the @hifmb.de in Oldenburg, Germany to explore the cellular origins of photosymbiosis:⁣ ⁣ 𝟏 𝐏𝐨𝐬𝐭𝐝𝐨𝐜 + 𝟐 𝐏𝐡𝐃𝐬 𝐩𝐨𝐬𝐢𝐭𝐢𝐨𝐧𝐬.⁣ Deadlines: Oct 29 & Nov 5. Links below. ⁣ Questions: nils.raedecker@hifmb.de⁣ #Photosymbiosis #HIFMB #ERC #AcademicJobs
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Nils Rädecker @radecker.bsky.social · 19/08/2025
I just returned from my holiday in Finland. While we were looking for bears, wolves and co, one of my personal favorites were these green-alga bearing freshwater sponges. Photosymbiosis is everywhere if you look close enough. Maybe it‘s time for some freshwater work at @hifmb.de?
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Nils Rädecker @radecker.bsky.social · 30/07/2025
My first dive into Raman microscopy! 🔬 Our latest heat stress experiments on Aiptasia raised more questions than answers — until a few days of Raman spectroscopy with Dr. Peter Mojzeš at @charlesuni.cuni.cz helped connect the dots. Grateful for the collaboration and excited about what’s ahead!
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Bruce Taylor @brucedstaylor.bsky.social · 07/06/2025
Many amoebae incorporate diatoms in their shells, but Cylindrifflugia bacillariarum is the master. Third and fourth pics are close views of the glue that holds it all together. #ProtistsonSky #Amoebae #Peatlands
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Nils Rädecker @radecker.bsky.social · 25/03/2025
Looking forward to exploring how algal symbionts enable anemones to cope with the environmental conditions of the Mediterranean and the Anthropocene. Thanks @pure-ocean.bsky.social! A fun project lead by @cpogoreutz.bsky.social and together with Christine Ferrier-Pagès. tinyurl.com/pureocean
pure-ocean.org
Discover our 6 winning projects! - Pure Ocean Fund
We are delighted to unveil the winning projects from the 2025 Pure Ocean Call for Projects.
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Laura Lautz @llautz.bsky.social · 19/02/2025
Yesterday was the darkest day of my professional life so far. Many of NSF’s best and brightest people fired indiscriminately. The terms of their firing cruel. My colleagues matter, they are valued and they make a difference. I have no words. www.npr.org/2025/02/18/n...
npr.org
National Science Foundation fires roughly 10% of its workforce
NSF fired 168 employees, leaving the agency less equipped to fund a wide range of scientific research.
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Nils Rädecker @radecker.bsky.social · 06/02/2025
A beautiful evening with friends, great discussions, and even some science! Excited to call this place my (work) home.
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Corey Holt @coreyholt.bsky.social · 21/01/2025
Interested in protist parasites? Want to learn some fun bioinformatics? Think this apicomplexan looks cool? Great! Come and do some protist genomics at @uniofbath.bsky.social! We're advertising a fully-funded PhD studentship open to UK & International applicants! www.findaphd.com/phds/project...
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Reposted by Nils Rädecker
Fabien Burki @fburki.bsky.social · 19/01/2025
Stoked about this manuscript, many years in the making. We present an original resource of ~700 highly curated plastid MAGs of marine pelagic algae. Among these we found a novel deep branching group of plastid genomes; we informally call them leptophytes www.biorxiv.org/content/10.1...
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Nils Rädecker @radecker.bsky.social · 17/12/2024
Application deadline now extended to January 12th, some extra time to enjoy the winter break! ☃️🛷🎅
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Nils Rädecker @radecker.bsky.social · 17/12/2024
What a great finale. Receiving the Zeno Karl Schindler Research Prize marked the perfect end to an amazing time as a postdoc at EPFL🇨🇭. Big thanks to the Laboratory for Biological Geochemistry for being awesome friends and colleagues throughout these years!
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Holly Moeller @mixotrophe.bsky.social · 13/12/2024
We have a new paper out today in #ScienceAdvances from a #COVIDcollab with postdocs Kevin Archibald, Suzana Leles, and Ferdi Pfab. Our #MOCHA☕💻🦠 team developed a new model to describe how #mixotrophs optimize metabolism. www.science.org/doi/10.1126/... #protistsonsky #NSFfunded (1/6)
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Nils Rädecker @radecker.bsky.social · 14/12/2024
Endosymbiosis remodels transporter expression in Phaeocystis algae. Beautiful work from the @johandecelle.bsky.social lab. It would be amazing to know whether the patterns in diurnal transporter expression also change the directionality of transport. 🧫🦠 academic.oup.com/ismej/advanc...
academic.oup.com
Transportome remodeling of a symbiotic microalga inside a planktonic host
Abstract. Metabolic exchange is one of the foundations of symbiotic associations between organisms and is a driving force in evolution. In the ocean, photo
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Nils Rädecker @radecker.bsky.social · 06/12/2024
🪸🦠🧫🔬 Join us in beautiful Oldenburg! We’re hiring a technician to help cultivate and study marine photosymbioses as part of our new ERC-funded focus group at @hifmb.bsky.social. Full-time, 4-year position in a new lab and a dynamic research environment! Apply now! 👉 jobs.awi.de/Vacancies/18...
jobs.awi.de
Technician (m/d/f) in animal, microalgal, and cell cultivation
Layout AWI HIPP extern, englisch
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HIFMB @hifmb.de · 03/12/2024
Welcome @radecker.bsky.social! As head of the new HIFMB focus group #Photosymbiosis, he investigates the coexistence of host animals and algae, how symbioses occur and what determines whether they succeed or fail. More about the focus group and Nils' EU-funded project “PhagoPhoRe” here:
hifmb.de
Photosymbioses: A Coincidence of Evolution? - HIFMB Oldenburg
The new working group "Photosymbiosis" investigates the coexistence of host animals and algae - the European Research Council provides funding of 1,489,000 eurosRead More
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Nils Rädecker @radecker.bsky.social · 02/12/2024
I am thrilled to announce that this will be my new workplace. I am joining @hifmb.bsky.social today to start my new focus group on host-microbe interactions in photosymbioses. Looking forward to meeting old and new friends and exploring new collaborations. 🦠🧫🪸 #microsky
The new HIFMB building.
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Fabien Burki @fburki.bsky.social · 23/11/2024
This really is an excellent paper. It shows that plastid protein import machinery can be inherited through serial transfer, and that we should not expect additional membranes in tertiary plastids. In other words, serial transfers got easier to explain www.sciencedirect.com/science/arti...
sciencedirect.com
Plastid translocon recycling in dinoflagellates demonstrates the portability of complex plastids between hosts
The plastids of photosynthetic organisms on land are predominantly “primary plastids,” derived from an ancient endosymbiosis of a cyanobacterium. Conv…
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Natalie Bennett @nataliegreenpeer.bsky.social · 11/11/2024
A reminder - as understood by Lynn Margulis - that cooperation is the foundation of life. And that biology does not lend itself to simplistic, mechanistic explanations. "Blurring traditional boundaries between ecto- and endosymbiosis" www.nature.com/articles/s41...
nature.com
A unique symbiosome in an anaerobic single-celled eukaryote - Nature Communications
Symbiont-housing structures are well-studied in multicellular eukaryotes but rarely in unicellular protists. This study shows that low-oxygen-adapted Anaeramoebae have symbiosomes positioning sul...
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Nils Rädecker @radecker.bsky.social · 20/11/2024
The results of a great collaboration finally out. Symbiotic carbon recycling in coral larvae is enhanced by elevated pCO2 and moderate increases in temperature. 🪸🧫 #Symbiosky
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HIFMB @hifmb.de · 10/07/2024
4️⃣5️⃣ days left to submit your application and become part of our fantastic international and interdisciplinary team. We have: 🔹5 #postdoc positions 🔹salary level E13 TVÖD (100%), 3 yrs fixed term 🔹start: 1 January 2025 hifmb.de/news/jobs/ #jobsinscience #jobalert
hifmb.de
Jobs - HIFMB Oldenburg
Vacancies External Job Offers Vacancies PostDoc for Tipping behaviour in ecological metacommunities – theory (HIPP25 Pos #1) (m/f/d) PostDoc for Tipping points induced by planktonic dispersal...
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Christian Kost @kostchristian.bsky.social · 28/06/2024
We have an opening for a PhD student in my group. Project: Understanding the mechanisms of synergistic coevolution. Approach: Coculture experiments, microscopy, analyses of fitness/ mutational effects. Deadline: 28.07.24 Please RT More info: shorturl.at/5ZP7R
shorturl.at
142 FB 5 Research Assistant (m/f/d) - Universität Osnabrück
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Alejandro Manzano Marín @amanzanom.bsky.social · 28/06/2024
Reposting for #SymbioSky, originally from @tcsengl.bsky.social. Symbiosis in context: Connecting insights across systems and scales When? 7th-10th October 2024 Where? Rothenburg Germany Some of the invited speakers in here @jillianmpetersen.bsky.social @keyfm.bsky.social
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Max Planck Institute for Marine Microbiology @mpimarinemicrobio.bsky.social · 17/05/2024
ZOMBIE CELLS!!! 😱🧟🦠 @janbruewer.bsky.social and colleagues discover how #viruses keep #SAR11 in check and even turn them into zombies! Out now @natureportfolio.bsky.social Nat Comms mpi-bremen.de/en/Zombie-ce... www.nature.com/articles/s41...
mpi-bremen.de
Zombie cells in the sea: Viruses keep the most common marine bacteria in check
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Cawa Tran, PhD @cawatran.bsky.social · 25/03/2024
New paper alert! Does photosynthesis actually have a role in symbiosis establishment between sea anemones and their intracellular algae? A previous study suggested not, but we found otherwise, especially when looking at anemones long-term and what's going on with their larvae!
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Nils Rädecker @radecker.bsky.social · 29/02/2024
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
microbiomejournal.biomedcentral.com
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...
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Dr. Claudia Pogoreutz @cpogoreutz.bsky.social · 12/01/2024
New opinion piece in @TrendsMicrobiol @CellPressNews A microbial matter close to my heart: the role of #Endozoicomonas in #corals. @marenziegler.bsky.social and I synthesized evidence from diverse studies, concluding corals and Endoz may not be the dream team we make them out to be 🧫🪸 👇🏻
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Nils Rädecker @radecker.bsky.social · 13/12/2023
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
The Cassiosomes of Cassiopea- stinging cell structures fueled by algal symbionts.
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Ákos T Kovács @evolvedbiofilm.bsky.social · 24/11/2023
Metabolic exchanges are ubiquitous in natural microbial communities Nature Microbiology perspective by @kostchristian.bsky.social et al @sarilog.bsky.social www.nature.com/articles/s41...
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Nils Rädecker @radecker.bsky.social · 02/11/2023
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 🪸🦠🔬
shorturl.at
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...
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Nils Rädecker @radecker.bsky.social · 13/10/2023
Fun time in the field! You’d be forgiven to think Laura was studying Mediterranean monk seal ecology. But that well camouflaged blob next to her is actually me trying to help with sampling anemones.
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Richard Sever @richardsever.bsky.social · 28/09/2023
bioRxiv goes big on Bluesky: accounts for all subject categories now available (Please Reskeet) connect.biorxiv.org/news/2023/09...
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Niclas Heidelberg Lyndby @nhlyndby.bsky.social · 27/09/2023
Ever wondered what function the white granules in Cassiopea might have? In our latest work we use OCT to investigate the micromorphology and optical properties of Cassiopea tissue, and show that white granules enhance photosynthesis of nearby symbionts. royalsocietypublishing.org/doi/10.1098/...
Optical coherence tomography 3D scan of a juvenile Cassiopea medusa
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Nils Rädecker @radecker.bsky.social · 27/09/2023
🎓 Congratulations to the brilliant Dr. Gaëlle Toullec on successfully defending her PhD thesis on symbiotic nutrient cycling in the upside-down jellyfish Cassiopea. 🌊🪸🪼🔬#PhD #MarineScience
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Nils Rädecker @radecker.bsky.social · 20/09/2023
Could active algal removal accelerate coral recovery? Maybe, but at what cost? Algae help retain nutrients in the ecosystem following coral mortality. In an oligotrophic ocean, “sea-weeding” could help with short-term coral recovery but slow down reef nutrient capacity recovery in the long-term. 🪸
theconversation.com
Seaweed is taking over coral reefs. But there's a gardening solution – sea-weeding
Many researchers are exploring high-tech ways to help reefs survive the climate crisis. But low-tech solutions like manually pulling out seaweed have a place too.
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Nils Rädecker @radecker.bsky.social · 14/09/2023
Very exciting read! I always dreamed of visualizing osmoregulation in action. Now it’s time to look at these processes in the CryoNanoSIMS.
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Nils Rädecker @radecker.bsky.social · 13/09/2023
That feeling when you spent three weeks on a NanoSIMS mosaic just to falsify your initial hypothesis… At least 15N-ammonium uptake in the Hydra-Chlorella symbiosis looks pretty. #microsky #evosky 🧫🦠🔬
Mosaic of 120+ NanoSIMS images showing 15N-ammonium uptake in Green Hydra.
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