New preprint out! Using ~75k environmental OTUs + 77 fossil calibrations, we reconstructed a Proterozoic timeline of eukaryote evolution. Our results show crown eukaryotes were already diversifying >1.6 Ga, long before the first undisputed fossils (~1.05 Ga). 🔗 DOI: www.biorxiv.org/content/10.6...

🎄 Just published 🎉! Our ongoing genome sequencing of the basal dinoflagellate Oxyrrhis marina uncovered a new lineage of endogenized Polinton-like viruses, OmPLV. Notably, OmPLV encodes ... [cont] #VirEvol #MicroSky #Mevosky #SymbioSky #ProtistsOnSky

End-of-year preprint dump! A collaboration with @messorensen.bsky.social and German and Korean colleagues: "The phylogenetic context for the origin of a unique purple-green photosymbiosis " doi.org/10.64898/202...

in 2013, Elio was so fascinated by the 'heterologous multicellularity' of 𝘊𝘩𝘭𝘰𝘳𝘰𝘤𝘩𝘳𝘰𝘮𝘢𝘵𝘪𝘶𝘮 𝘢𝘨𝘨𝘳𝘦𝘨𝘢𝘵𝘶𝘮 that he chose a cross-section to celebrate STC's 10th anniversary 🙂 👉 smallthingsconsidered.blog/schaechter/2... #MicroSky

Very excited to share this work led by Austin Link, a graduate student in our lab. We have discovered a novel, fig-associated microbe that promotes reproductive success via variable life history mechanisms in two nematode species. www.biorxiv.org/content/10.6...

Thanks @jcellsci.bsky.social for this opportunity to contribute to your centenary collection with our take on the state of the field - 10 years after its modern reincarnation 🧪🌍 W/ @alebenoit.bsky.social @eelcotromer.bsky.social @fritzlaylin.bsky.social journals.biologists.com/jcs/article/...

Some of the longest-lived organisms on Earth aren’t whales, trees or corals, but microbes buried deep in the earth. This eye-opening essay examines the slowest lives on Earth, asking what such lives mean for how we define life itself @karenlloyd.bsky.social

This is still one of my very most favorite biological videos ever. Vampyrella lateritia, a predatory amoeba: "OM NOM NOM NOM" I'm absolutely fascinated by and how single cell organisms can display behaviors like target localization, pursuit, and predation.

Just on time for the holidays! Happy to share the published version of the discovery of leptophytes, a new deep-branching and widespread group of microalgae based on plastid MAGs (ptMAGs). Now with additional support from a mitochondrial MAG (mtMAG) of leptophytes. www.nature.com/articles/s41...

Awesome opportunity to figure out the role of cytoplasmic bridges in choanos (or mESCs, if you're into those things somehow)

The vestibular system in your inner ear keeps you spatially oriented (problems cause vertigo). Comb jellies have similar statocysts, perhaps the first sensory organ. The cilia build the statocysts by transporting cells to their tips... like little escalators! www.sciencedirect.com/science/arti...

New in ACS SynBio: led by Dennis Bolshakov, we used the awesome power of yeast to define how expression levels, noise, and sequence program the dynamics of synthetic protein waves, allowing us to genetically encode new cellular timescales stable over generations! pubs.acs.org/doi/full/10....

We recently investigated how much and when tintinnid ciliates produce shell material during the cell cycle to construct a new shell (lorica) after division: tinyurl.com/49usp8xw We adapted a classical staining technique. Still no #UExM for tintinnids dudinlab.bsky.social‬? (wink)#protistsonskyky

Vaults. They are cell biology's greatest puzzle! This preprint from Martin Beck's lab shows them docked on ER membranes with a ribosome inside. What on earth is going on there?? #CellBiology #WTFology www.biorxiv.org/content/10.6...

How does a macrophage decide to eat or simply nibble? Check out our latest paper! You can also read this nice review. Congrats Caitlin for leading this amazing work! www.nature.com/articles/s41... www.nature.com/articles/s41...

Are you very busy but still want to learn what Aphelids are and why they are important to understand the evolution of Fungi? Then check out our “Quick guide” on Aphelids published in collaboration with @deemteam.bsky.social, Sergey and Guifré. #protistsonsky doi.org/10.1016/j.cu...

Microbial eukaryotes keep challenging assumptions about eukaryotic cell and genome biology. Our upcoming workshop explores the frontier of protist genomics and how it shapes cell biology, ecology and evolution. Please save the date! Talks, posters and ECR events Websites and details coming soon

Another one to add to the evo cell bio class reading list!

Interested in cell adhesion, evolution of multicellularity, or developing tools for emerging marine models? My lab at UM is hiring a postdoc, and the application is now open: 🔗 tinyurl.com/28jvu4aa If you know anyone looking for a postdoc, please pass this along!

New preprint from our lab: www.biorxiv.org/content/10.6... @olegtolstenkov.bsky.social, Sissel and Rodolfo in collaboration with @appygenetics.bsky.social @msarscentre.bsky.social built a behavioral atlas of the planktonic tunicate Oikopleura dioica across its life cycle.

Fantastic ASCB so far! Haven’t even had time to live tweet with all the great talks and catching up with folks. Some science standouts to far have been the Planetary Cell Bio session organized by @gladfelterlab.bsky.social and @robinsall.bsky.social’s beautiful talk on cell migration

I'll be sharing my work on how cells know when to make missing structures at #cellbio2025 today! Come check out my poster (B406) and my talk in the Evolutionary Cell Bio mini symposium session which starts at 4pm.

Come to be our colleague! Center of Paris, excellent facilities, research spanning the whole range of basic and biomedical life science topics, enthusiastic and collaborative colleagues, crème brûlée every Friday... What else could one want?

Cells can hunt prey, solve mazes, and learn from past experience. Does this mean they can think, at some level? Find out more at our upcoming session on "Cell Behavior and Cognition" at the ASCB/EMBO #cellbio2025 meeting, Saturday 1-3 pm rm 115.

My first ever time doing a podcast - part of “that’s absurd, please elaborate”, recorded live at the Bay Area Science Festival. thatsabsurdshow.com Discussing two topics- does saturable transport mean you can eat as much as you want? and what would happen if tardigrades were a lot bigger?

New preprint! Do you like ocean waves? We found similar waves on bacterial colonies! We found that this collective behavior, known as rippling, is nothing but surface waves on an active nematic. @princeton.edu @mpipks.bsky.social @ub.edu @icreacommunity.bsky.social www.biorxiv.org/content/10.1...

And another Asgard paper. Cells in motion! Wow! www.biorxiv.org/content/10.1...

So happy to announce our new preprint, “A geothermal amoeba sets a new upper temperature limit for eukaryotes.” We cultured a novel amoeba from Lassen Volcanic NP (CA, USA) that divides at 63°C (145°F) 🔥 - a new record for euk growth! #protistsonsky 🧵

Weird word of the day: "kleptosquamy." The testate amoeba Awerintzewia cyclostoma steals scales from other amoeboid organisms to build its own shell. This one has robbed Quadrulella, Netzelia, various euglyphids, and even an Acanthocystis. Kleptosquamy! #amoebae #ProtistsOnSky #biology #nature

Hot off the press! Our latest paper led by @fernpizza.bsky.social, understanding how plasmids evolve inside cells. These small, self-replicating DNA circles live inside bacteria and carry antibiotic resistance genes, but also compete with one another to replicate. 1/ www.science.org/doi/10.1126/...

The lab’s first pre-print! We investigated how growth-inducing Erk activity waves are regulated in regenerating zebrafish scales. We discovered that Erk waves are followed by waves of expression of their own inhibitors, as predicted by excitable waves theory. tinyurl.com/26r2cmpj

✨Opportunity to join the 🦁🦠 Predatory Bacteria lab! My lab will move to University of Bern (CH) in April 2026 based on my #ERCStG. Therefore, we are looking for: -a PhD student (shorturl.at/mt0LR) -a 50% Technical Assistant/Lab manager (shorturl.at/0IIKe) 🙏Thanks for sharing. #MicroSky

✨ A study in nature.com from our Faculty at @unikarlova.cuni.cz reveals Solarion arienae, a rare #protist forming a newly identified eukaryotic supersroup Disparia. A unique window into early #eukaryotic cell #evolution. 🌍🔬👏 www.nature.com/articles/s41...

Our work on Naegleria Myosin 2 is out! Naegleria encodes 3 Myo2s which contract its actin network—the first evidence of contractile Myo2 outside of Amorphea. Myo2 is actually widespread in Naegleria's relatives and correlates with fast cell crawling. Read more: www.cell.com/current-biol...

Phenomenal, inspiring work from Scott Coyle's lab identifying the logic of morphological control, which optimizes prey capture in one of the most fascinating ciliates around, suctorians. Immediately added to our journal club list

Finally – there are many mysteries to still resolve for these cells. From dramatic metamorphic capabilities🤯 to prey preference and detection mechanisms 🕵️. For anyone interested in collaborating or getting their hands on these cells, these fantastic beasts culture well and we’re happy to share!

How do cells adapt morphology to function? In a 🔥 preprint by @zjmaggiexu.bsky.social , with @dudinlab.bsky.social and @amyweeks.bsky.social , we identify a self-organizing single-cell morphology circuit that optimizes the feeding trap structure of the suctorian P. collini. 🧵 tinyurl.com/4k8nv926

Next talk at the #NaturalPhilosophy Symposium was by Chris Kempes on The Easy Part of Biology. Commentary by Margaret Johnson. [Physics. Physics is the easy part of biology.] www.youtube.com/watch?v=riKf...

And a great perspective by Peter and Anthony! www.science.org/doi/10.1126/... bsky.app/profile/jlst...

NEW pub in @science.org 🥳 Is it sponges (panels A & B) or comb jellies (C & D) that root the animal tree of life? For over 15 years, #phylogenomic studies have been divided. We provide new evidence suggesting that... 🔗: www.science.org/doi/10.1126/...

And the tide turns back in favour of sponges! One of the longest arguments in evolutionary biology - which came first, sponges or comb jellies - has another twist! This one will run and run!

Let me use this as an opportunity to talk about Jordi et al's very cool paper, now out in PNAS 🧪: pmc.ncbi.nlm.nih.gov/articles/PMC... You can read our news and views here: www.pnas.org/doi/10.1073/...

We are looking for a PhD student to work on an exciting plastid endosymbiosis in microbial eukaryotes. This position involves sampling, exciting microscopy such as CARDFISH, ExM and FIBSEM, single-cell transcriptomics and more. #protistsonsky 1/2

🚨Fully funded PhD opportunity: Physics, biology & ecology of toxic dinoflagellate blooms 🦠. Join us to investigate how motility and mixotrophy influence bloom formation, using experiment🔬and modelling ♾️. #microswimmers #plankton #biophysics #ecology #PhD pls RT iapetus.ac.uk/studentships...

Wound healing is a hallmark feature of all life, including single cells. In a new preprint, Ambika Nadkarni @biochembika.bsky.social investigates a new dimension in cellular wound healing: how cells recover AFTER the wound has been closed www.biorxiv.org/content/10.1...

An Asgard archaeon with internal membrane compartments Brilliant study led by @fmacleod.bsky.social and Andriko von Kügelgen. Tight collaboration with @buzzbaum.bsky.social and lab. Congrats to all authors! www.biorxiv.org/content/10.1...

Difflugia are absolutely amazing. What a wild shell!

The amoeba Difflugia bacillifera builds its shell from things that contain silica, and it is not particular about the source. These ones have incorporated whole shells from another testate amoeba (Euglypha), along with diatoms, algal cysts and chunks of rock. #Amoebae #ProtistsOnSky #peatlands

interested in mechanobiology and physics of living systems? this is the conference for you! Join us 9-12 June in Heidelberg! with @nicolettapetridou.bsky.social @xaviertrepat.bsky.social Enrique Rojas & Alba Diz-Munoz Registration OPEN www.embl.org/about/info/c...