I'm hiring! I have 2 open positions:

🔬 Postdoc
🧪 Research associate

We study how animal multicellularity evolved by exploring the molecular logic of cell adhesion using cell biology, 'omics, and tool-building in non-model organisms.

Come join us!

Details and application links 👇

Please repost

VACANCY - We’re searching for a Postdoctoral Researcher to join the newly appointed group of Dr @hassansalem.bsky.social, to explore the developmental biology of host-microbe symbiosis

www.jic.ac.uk/vacancies/po...

Deadline - 25 March 2026
Salary - £37,500 - £45,350
Contract - 3 years, full-time

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

How specific are heritable symbioses?

And what can we learn from swapping obligate symbionts across host species?

We address this in our latest, led by @inespons.bsky.social & in our collaboration w/ @microbiome.bsky.social 🦠🪲 Out today in @natcomms.nature.com!

1/n
www.nature.com/articles/s41...

Check out our latest pre-print of our favourite pets - the breviates. This work was led by Zhezhen Yi in collaboration with @andrewjroger.bsky.social and many others! By studying diverse breviates we were able to see how different metabolic pathways can evolved in response to low-oxygen.

Holes in the Hologenome: Why Host-Microbe Symbioses Are Not Holobionts | mBio ABSTRACT The advent of relatively inexpensive tools for characterizing microbial communities has led to an explosion of research exploring the diversity, ecology, and evolution of microbe-host systems...

Rereading these two papers:

Holes in the hologenome: why host-microbe symbioses are not holobionts.
journals.asm.org/doi/10.1128/...

The Hologenome Concept: Helpful or Hollow?
journals.plos.org/plosbiology/...

And I still find myself in general agreement with most of the points in them

A New Classification Framework to Understand Evolutionary Transitions in Individuality Classifying biological entities based on whether and how the two fundamental aspects physiological and evolutionary components are represented yields six types of structural organization. The resulti...

New paper by Saskia Wilmsen and me just came out BioEssays:

A new classification framework to understand evolutionary transitions in individuality

Please find the OA paper here:

onlinelibrary.wiley.com/doi/10.1002/...

a woman says " would you like to join us " with her eyes closed ALT: a woman says " would you like to join us " with her eyes closed

📢 Open faculty position – Origins of Life
We have an opening in our section at the University of Geneva! 🧬🚀

SPREAD THE WORD

Apply here: jobs.unige.ch/www/wd_porta...

electron microscopy picture of a microbial cell with multiple flagella

How a parasite gave up sex to find more hosts—and why its victory won't last phys.org/news/2026-01...

Host range expansion of asexual parasite can be explained by loss of adaptions in Muller’s Ratchet www.nature.com/articles/s41...

#Protists #Microbes #Parasites #Giardia #Evolution

P. tenue, its symbionts, and natural habitat

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...

I'm happy to of played a small role in this cool project. Such a neat system!

Colloquium Dec 17: Fellow @messorensen.bsky.social, "On the hunt for novel microbial endosymbioses" wiko-berlin.de/en/fellows/a... www.wiko-berlin.de/en/wikothequ...

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...

Save the date! The next instalment of Comparative Genomics of Unicellular Eukaryotes is a GO! Join us next year for a programme of talks, posters, ECR/networking activities.

Website and registration details to follow in the coming weeks.
See you October 5-10 2026 in beautiful San Feliu!!

Postdoc (m/f/d) in Endosymbiosis Research

📢Postdoc position available!🧪🧫🧬
Our group is seeking a motivated researcher to investigate the molecular mechanisms driving host–endosymbiont interactions.
Full details & application: karriere.hhu.de//index.php?a....
Please help us get the word out!

A Mitochondrially Related Plastidial Transporter Regulates Photosynthesis in the Diatom Phaeodactylum tricornutum Eukaryotic phototrophs depend on the activity of two engines (the plastid and the mitochondrion) to generate the energy required for cellular metabolism. Because of their overlapping functions, both ....

A Mitochondrially Related Plastidial Transporter Regulates Photosynthesis in the Diatom Phaeodactylum tricornutum onlinelibrary.wiley.com/doi/10.1111/...

Congratulations Hassan!! That's fantastic news

Some news 🎉
After five incredible years in Tübingen, it’s time to say goodbye.

Starting February, the Mutualisms Lab will relocate to the John Innes Centre, right next door to @berasymbionts.bsky.social and her group at The Sainsbury Laboratory 🪲🦠

Bath city centre

Pulteney weir in Bath

Bath city centre

Bath cathedral

🎉 There are currently 4 opportunities to join the Holt lab in beautiful Bath! 🎉

If you're interested in protists, parasites, and/or biodiversity then please check out our website:
theholtlab.com/posts/ln5-21...

🚨 Deadlines vary between project.
✉️ Please reach out if you have any questions!

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

This paper has been a must! Great collaboration with @mkrupovic.bsky.social and @yifanzhou.bsky.social, a N&V by a legend of halophilic archaea tinyurl.com/yc3dcv72, and one picture of one of our expeditions to Dallol making the cover of the November issue of @natmicrobiol.nature.com

rdcu.be/eLtCH

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...

Bacterial tubular networks channel carbohydrates in insect endosymbiosis Symbiosis is widespread in nature and plays a fundamental role in organism adaptation and evolution. In nutritional endosymbiosis, host cells accommod…

Agnès Vallier, @cmonegat.bsky.social , Baptiste Vierne, @nicolasparisot.bsky.social , Guy Condemine, Pedro Da Silva, Xavier Jaurand, @yschwab.bsky.social , @kaltenpoth-lab.bsky.social , Abdelaziz Heddi, and @annazaidmanremy.bsky.social

➡️ www.sciencedirect.com/science/arti... 5/5

Please share this with anyone who may be interested in a post-doc in Germany:

jobs.awi.de/Vacancies/20...

This is quite an exciting opportunity to push the boundaries of what is known regarding the molecular basis of the formation and demise of photosymbiotic relationships in marine habitats.

We are happy to share our latest work in @nature.com . We study the genomic and cellular basis of facultative symbiosis in Oculina patagonica - a Mediterranean coral remarkable for its ability to survive long periods without algal symbionts. Led by Shani Levy and @xgrau.bsky.social
rdcu.be/eLbaZ

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 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

How to upgrade stolen organelles into permanent plastids: A comparative transcriptomic perspective www.pnas.org/doi/abs/10.1... #protists #protistsonsky

OIST is seeking up to four tenure-track or tenured faculty in Ecology, Environmental Science, Earth Science, and Oceanography. Application deadline: Oct 15. Please share. Thx!
www.oist.jp/careers/facu...