From MBoC A new localization atlas maps more than 600 Giardia proteins, revealing the locations of hundreds of previously uncharacterized proteins and creating a valuable resource for functional discovery. https://www.molbiolcell.org/doi/10.1091/mbc.E25-12-0590

Plastid endosymbiosis without gene transfer - dinoflagellates can do it #ProtistsOnSky #Kareniaceae #plastids

Recent plastid replacement in Karlodinium ballantinum (Kareniaceae, Dinoflagellata) challenges the paradigms of endosymbiotic gene transfer

Abstract. Plastids, the photosynthetic organelles of eukaryotes, arose via endosymbiosis of cyanobacteria by a eukaryotic host and were subsequently spread

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Nice :-)

Proceedings of the National Academy of Sciences@pnas.org · last wk.

One of the most-viewed PNAS articles in the last week is “Environmental phylogenetics supports a steady diversification of crown eukaryotes starting from the mid-Proterozoic.” Explore the article here: https://ow.ly/5Lpf50Ztxar For more trending articles, visit https://ow.ly/AMo550Ztxas.

So happy to share our new paper out now in @natmicrobiol.nature.com! We establish Pirsonia-Coscinodiscus as a model pathosystem and uncover how this tiny parasite infects and kills bloom-forming marine diatoms 🌊🦠 rdcu.be/fuQyF

The evolutionary origins of #streptophyte multicellularity #TansleyReview by Tatyana Darienko, et al. nph.onlinelibrary.wiley.com/doi/10.1111/... @jandevries.bsky.social @caeciliafkunz.bsky.social Summary also available in German. #PlantScience

Check out this stunning public outreach video by the German YouTube channel Kurzgesagt (in English). It covers predator–prey interactions involving #protists. Very happy to have contributed - the visuals are out of this world! #protistsonsky www.youtube.com/watch?v=Xf-u...

What’s It Like to Be Killed by Nature’s Most Brutal Predator

YouTube video by Kurzgesagt – In a Nutshell

youtube.com

New preprint: We studied the population dynamics of Arctic #phytoplankton and #mycoplankton and found evidence for chytrid-mediated diatom bloom termination. www.biorxiv.org/content/10.6... Congrats @paulinethome.bsky.social #protists #protistsonsky #algae #diatoms #chytrids

New #ISEPpapers #PrePrint! Single cell #genomics and fluorescence microscopy suggest a permanent plastid in a marine centrohelid www.biorxiv.org/content/10.6... #Protists #Algae #Microbes #Symbiosis #Evolution #Plastids

Pop Goes the Water Bear: I've written a post about Sorochytrium milnesiophthora - a chytrid fungus that infects tardigrades, and how their water bear-slaying might actually be helping other microscopic animals that live on the surface of lichens. 🧪 dailyparasite.blogspot.com/2026/05/soro...

<i>Sorochytrium milnesiophthora</i>

Tardigrades (also known as "water bears") have built up a reputation for being pretty much invulnerable  (even though Bdelloid rotifers does...

dailyparasite.blogspot.com

And now it's out! Happy that PNAS selected for the cover this SEM image snapped by @samjlord.bsky.social, one of the most evocative visualizations of Euplotes that I have ever encountered. www.pnas.org/doi/10.1073/... Stay tuned for what is shaping up to be some fascinating follow-up in the lab...

Ben Larson@blarson.bsky.social · 11mo ago

What could be more exciting than watching Euplotes scurry around under the microscope? How about adding some raptorial predation by supergiant cannibal cells? www.biorxiv.org/content/10.1... Video by Vittorio Boscaro. 1/n

If you want to read a cool story today, look no further: A billion-year-old bacterial machinery replicates plastid DNA and supports kleptoplastidy #protistsonsky www.biorxiv.org/content/10.6...

Interested in working on the evolution of photosynthetic endosymbioses? Come join us! I have 2 open positions in my new group @cemess.bsky.social in Vienna 3yr postdoc info: tinyurl.com/4emkjpn4 4yr PhD info: tinyurl.com/mtxmsjpy Apply by 1st June! Please share/repost #Protists #Symbiosis #PhD

My lab is currently looking for a postdoc interested in phylogenomics to work with our group on PhyloFisher. Please reach out if you or anyone you know is interested. evol.mcmaster.ca/brian/evoldi...

IQ-TREE 3: Phylogenomic Inference Software using Complex Evolutionary Models academic.oup.com/mbe/article/...

IQ-TREE 3: Phylogenomic Inference Software using Complex Evolutionary Models

Abstract. IQ-TREE (https://iqtree.github.io/) is a widely used open-source software tool for efficiently inferring phylogenetic trees under maximum likelih

academic.oup.com

Really excited to share our new paper from @ibe-warszawa.bsky.social protist team! 🎉 We dive into protist symbioses and show how these interactions shape ecosystems and have played a key role in the evolution of eukaryotes 🦠

ISEP@isepprotists.bsky.social · 4mo ago

New #ISEPpapers by @ankarn.bsky.social et al.! Living together: evolutionary and ecological dimensions of #protist endosymbiosis academic.oup.com/microlife/ar... #Protists #Microbes #Symbiosis #Evolution

🌊 Exciting #PhDPosition in #PlanktonEcology at the University of Koblenz, Germany! Work on marine protists with a mix of 🔬 wet lab and 💻 bioinformatics in a 3-year, 60% position. 📅 Apply by 20 May 2026 Please repost/share 🙌 Link: tinyurl.com/yu27knau #Protists #MicrobialEcology #PhD #Ecology

An ocean-wide partnership: How #diatoms use a sulfated #polysaccharide to keep #bacteria close & friendly. mpi-bremen.de/en/How-diato... Out now #Microbiome by J. Krull @chandnisidhu.bsky.social J.-H. Hehemann C. J. Crawford et al. @marumunibremen.bsky.social @unibremen.bsky.social (C) M. Reich

Our new article on #protist global distributions combining the #Mixoplankton and #metaPR2 databases with newly revised functional annotations. rdcu.be/fanlx

📣 Job opportunity: ERC-funded position as a Five-Year Postdoctoral Researcher (all genders welcome) in @jandevries.bsky.social lab in Göttingen, Germany. Find more info here: www.uni-goettingen.de/de/644546.ht... #plantsci

So you are using IQ-TREE to estimate a tree for "deep time" phylogenetics using amino acid alignments. There is a lot of confusion about how to test model fit. Here are some suggestions.

Single-cell transcriptomics reveals a new marine parasite: Characterization and distribution of Rozellomyces from the Gulf of Alaska ⛴️🔬🌊 Congrats Adarsh and all co-authors: @protistwtmostest.bsky.social, Gordon, @pjkeelinglab.bsky.social, and Naomi! #ProtistsOnSky

Single-cell transcriptomics reveals a new marine parasite: Characterization and distribution of Rozellomyces from the Gulf of Alaska

Parasitic microorganisms play critical roles in shaping aquatic ecosystems, yet many lineages, such as those within the phylum Rozellomycota, remain poorly understood. Here, we describe a new rozel...

tandfonline.com

Description of the new Marine fungus that kills harmful algae Full article: Algophthora mediterranea, gen. et sp. nov.: Novel dinoflagellate- and diatom-infecting generalist marine chytrid from the Mediterranean Sea share.google/VdemEElvkl7c...

Algophthora mediterranea, gen. et sp. nov.: Novel dinoflagellate- and diatom-infecting generalist marine chytrid from the Mediterranean Sea

This study describes a novel parasitic fungus that infects the benthic and epiphytic dinoflagellate Ostreopsis cf. ovata during a coastal microalgal bloom in the Mediterranean Sea. Microscopic obse...

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Final version @nature.com of our paper describing unconventional multicellular development in a choanoflagellate inhabiting an extreme environment. A ton of new data since the first @biorxivpreprint.bsky.social preprint (which we've kept updating). A brief 🧵 (carried over from the old place)

Nature Portfolio@natureportfolio.nature.com · 5mo ago

A study in Nature shows that the single-celled form of a tiny, aquatic organism can turn into a multicellular version by three different routes. The discovery adds insight to the possible origins of multicellular life, suggesting a previously unrecognized degree of flexibility. 🧪

I am happy to share the unfinished but nevertheless fascinating autobiography of the late Thomas Cavalier-Smith, written in 2020, shortly before Tom passed away in 2021. I thank Ema Cavalier-Smith for sharing the text with me. I recently finished curating […] [Original post on biologists.social]

Have a novel protist's genome or transcriptome and want to predict it's mitochondrial proteome? Look no further than CoMR, this handy bioinformatic workflow to help you: www.biorxiv.org/content/10.6... #phylogenetics

Closely related microbes tend to live in similar communities across Earth’s environments. We call this pattern community conservatism - extending established ecological patterns to the microbial world. 🧬🌍 #MicrobialEcology #Evolution Read the full article here: doi.org/10.1038/s415...

I have a postdoc position in metagenomic exploration available in my group. Candidates with documented experience in phylo & metagenomics and preferably with petabase-scale data mining and GLM workflows are encouraged to apply. Come join us! 🧬🦠💻 Please repost Apply here: www.wur.nl/en/vacancy/p...

Postdoctoral researcher Phylogenomics and metagenomics

Are you just as excited as we are about the fascinating world of microorganisms? Do you want to contribute to exploring and genomically characterize novel prokaryotic lineages? Do you have a PhD degre...

wur.nl

Thijs J. G. Ettema 🦠🔬🇳🇱🇸🇪🇪🇺@ettema.bsky.social · 8mo ago

Come join us! Soon I will be advertising a postdoc vacancy in my group as part of my @erc.europa.eu AdG project 'DARK ROOTS'. Focus of the project will be on phylo- and metagenomic mining of novel prokaryotic lineages. I will soon post a link here - stay tuned, and please repost! #asgardarchaea

Kulikov, @ikeririsarri.bsky.social @fonamental.bsky.social et al present a 529.6 Mb chromosome-scale genome for the redlip blenny (scaffold N50 = 23.7 Mb; BUSCO = 97.06%). Annotation identified 18,927 protein-coding genes. 🔗 doi.org/10.1093/gbe/evaf242 📸 Evan D’Alessandro #genome #evolution

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...

A free, open-access library of high-quality organism illustrations for science communication

A free, open-access library of high-quality organism illustrations for science communication

We create vector graphics of model organisms and emerging biological research organisms to enhance our publications. We’re sharing these editable graphics under a CC0 license for other scientists to...

doi.org