Filip Husnik

✨ 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...

Daily reminder that you are a better writer and researcher than any generative AI platform around. Your skills are worthy and it takes far more time to clean-up and fact-check the mess some chatbot spits out than to just do it yourself 😘

Diving through the purple sulfur bacteria layer of Fayetteville Green Lake with our ROV last month. This is the most intense density of PSB that I've seen in many years!

Phylogenetic reconciliation supports a methanogenic ancestor of the Archaea and a derived origin for host-associated lineages The phylogeny of the Archaea continues to be revisited and revised as new groups are discovered and phylogenetic methods improve, but key questions about their early evolution remain. It has been sugg...

#Archaea, #DPANN, #phylogenetic_reconciliation
New preprint online!
www.biorxiv.org/content/10.1...

Parallel Evolution of Bacteroidota as Long-Term Endosymbionts of Insects Symbiotic relationships transform diverse aspects of both symbiont and host biology. The most visible changes include a massive reduction of the endosymbiont genome and the development of novel host o...

.... 2nd work

2) Parallel #evolution of #Bacteroidota as Long-Term #endosymbionts of #insects

by Jinyeong Choi, Cong Liu, Pradeep Palanichamy, Yumiko Masukagami, Hirotaka Tanaka, Takumasa Kondo, Matthew E. Gruwell, @filiphusnik.bsky.social

doi.org/10.1101/2025...

#SymbioSky @oistedu.bsky.social

Thanks, @amanzanom.bsky.social! We're currently in Sabah for scale insect sampling, so I couldn't share the new preprints yet.

PhD student in systematic biology The Department of Organismal Biology teaches and explores the evolution, development and function on the organismal level. For more information see Department of Organismal Biology - Uppsala Universit

It is a collaboration between my lab (Uppsala U) and the labs of @dudinlab.bsky.social (Geneva U) and @filiphusnik.bsky.social (OIST). More info and how to apply here:
uu.varbi.com/en/what:job/.... (The use of AI for writing the motivation letter is discouraged and will be regarded unfavourably) 2/2

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

We have wondered what a complex archaeal cell might look like ever since 2014. It’s been a long road (and the journey is far from over), but it’s a good time to pause for breath and look. These Asgard archaeal cells are a surprise! And that is the joy of being a cell biologist.

Exciting day for the lab: our 1rst paper is officially out in @currentbiology.bsky.social 🥳 Wonderful collaboration wt @gautamdey.bsky.social showing how Cryo-ExM achieves consistent immunostaining in diverse diatoms, from the lab and the natural environment 1/n
#ProtistsOnSky
tinyurl.com/2zxaund7

🚨Our collaboration with @centriolelab.bsky.social & @gautamdey.bsky.social is out today in @cp-cell.bsky.social
We show that #Expansion #Microscopy is a broad-spectrum modality for Euks, enabling 3D phenotypic maps rooted to phylogeny.
#ProtistsOnSky #SciComm #SciSky

www.cell.com/cell/fulltex...

Buribushi Fellowship

Independent researcher fellowships (non-tenure track) at OIST, with a focus on broadly defined theory www.oist.jp/research/bur...

Bacterial tubular networks channel carbohydrates in insect endosymbiosis Bacteria with an intracellular lifestyle need to feed from inside their host cells. This study shows an adaptation of certain symbiotic bacteria, allowing them to actively retrieve nutrients from the host. High-pressure cryofixation has been combined with volume electron microscopy and in situ high spatial resolution chemical analysis. It reveals a complex bacterial membranous network that increases the exchange interface between the bacteria and host cytosol and maximizes carbohydrate acquisition.

Now online! Bacterial tubular networks channel carbohydrates in insect endosymbiosis

🧬 Registration is open for the Phylogenomics Workshop in Český Krumlov!
Fantastic training opportunity for anyone working with genomic data and evolutionary questions.
Highly recommended - amazing course, great community, and a fantastic setting!

We’re back with the next DinoSphere Online Seminar!

Join us on Nov 4th, we're hosting:

Edmée Royen (ULiège) - Symbiodinium

Nicolas dos Santos Pacheco (Cambridge) - Perkinsids

📅 Tue, Nov 4 - 4 PM CET/3 PM GMT

💻 Zoom link: sites.google.com/view/dinosphere


Please spread the word!
#protistonsky

A novel taxonomic database for eukaryotic mitochondrial cytochrome oxidase subunit I gene (eKOI), with a focus on protists diversity Abstract. Metabarcoding has emerged as a robust method for assessing biodiversity patterns by retrieving environmental DNA directly from ecosystems. While

Version 5.1.1 of the PR2 database has been released.

The major novelty is the inclusion of the recently published eKOI database (coi gene- doi.org/10.1093/data...) in the web interface. The 18S rRNA database is not changed so you can use 5.1.0 or 5.1.1 for metabarcode annotations

Picture of MEME students on the beach

Do you want to do a Masters in Evolutionary Biology? The call for applying to the MEME program is now open! MEME is a fantastic 2-year MSc between four European Universities on all areas of Evolutionary Biology. Apply and study in Sweden/France/the Netherlands/Germany/USA/Switzerland! www.evobio.eu

“Cellular Olympics” our catalog of freeky ultra fast cellular superhero’s is freely available “Ann Rev of microbiology”

www.annualreviews.org/content/jour...

This is a compilation of world’s fastest single cell organisms - enjoy this buffet of rare delightful protists with mind bending speeds. 🧪

Database Release: PPSDB, a Linked Open Data Knowledge Base for Protist–Prokaryote Symbioses As the ecological and evolutionary importance of symbiotic interactions between protists (microbial eukaryotes) and prokaryotes (bacteria and archaea) is better appreciated, keeping an overview of th...

Database Release: PPSDB, a Linked Open Data Knowledge Base for Protist–Prokaryote Symbioses onlinelibrary.wiley.com/doi/10.1111/... #jcampubs

Viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts reveal intricate nested interactions - Nature Microbiology An exploration of the viromes of haloarchaea and their ultra-small DPANN symbionts reveals plasmid-derived satellites of viruses from both archaeal groups, highlighting the complexity of nested symbio...

Viruses and virus satellites of haloarchaea and their nanosized DPANN symbionts reveal intricate nested interactions
#microbiology #virology #viruses #archaea
@natmicrobiol.nature.com
www.nature.com/articles/s41...

I am defending my dissertation titled "Ecology and evolution of anaerobic ciliate methanogen symbioses in marine oxygen depleted environments" on Nov 6 at 9:30 am EST!

Message me for the zoom link if you are interested in joining! (Or join in person at beautiful URI GSO)
#ProtistsOnSky #SymbioSky

Congrats @laurentformery.bsky.social

Often people ask why we chose to work on a certain problems and a simple answer for us in this case - it’s beautiful. If you want to learn the magic of building crystalline « gems » inside the body - see our latest paper at www.biorxiv.org/content/10.1...

Our study on the first rhodopsin channels known to respond to UV light is now published in PNAS! And they come from our favourite protists, apusomonads! #protistonsky

www.pnas.org/doi/full/10....

Excited to share our new work on nanopore metabarcoding — showing how it can be used for protists and combined with short reads!
Led by my PhD student Małgorzata Chwalińska, with our team at @ibe-warszawa.bsky.social and @fabnot.bsky.social & Sarah Romac at @sbroscoff.bsky.social
#ProtistsOnSky

Pretty excited to share our new preprint!
Non-photosynthetic Plastid Replacement by a Primary Plastid in the Making
www.biorxiv.org/content/10.1...

We're excited to share with everyone a preprint of our manuscript that resolves the cellular origins of the symbiosome in cnidarian-algal symbiosis through proteomics of the symbiosome, RNAi, and CRISPR/Cas9 experiments. ⬇️
www.biorxiv.org/content/10.1...

Read on below!

1/12 🧵

Pretty excited to share our new preprint!
Non-photosynthetic Plastid Replacement by a Primary Plastid in the Making
www.biorxiv.org/content/10.1...

The genomic basis of symbiotic integration at University of Bath on FindAPhD.com PhD Project - The genomic basis of symbiotic integration at University of Bath, listed on FindAPhD.com

There's a PhD position now available with me in Bath, on the evolution of symbiosis. www.findaphd.com/phds/project.... The supervisory team also includes @anja1.bsky.social @phil-donoghue.bsky.social and others. NB, this is open both to UK-based students *and* to international students :)

I'm looking for a PhD student to dive into some protist genomes and maybe find some cool parasites like this (very flexible) apicomplexan.
www.findaphd.com/phds/project...
Please do reach out if you're interested. And APPLY EARLY! The advert will be taken down when a suitable candidate is found.🪱🦀🐟

It's a broad search. Anybody whose work partly overlaps with any of the fields is welcome to apply, especially if interdisciplinary! Evolutionary microbiology is a subfield of Environmental Science ;-).