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Anna Schrecengost

@annaschreck.bsky.social
240 followers 371 following 32 posts

postdoc at the University of Rhode Island Graduate School of Oceanography studying marine anaerobic ciliates & their prokaryotic symbionts | she/her

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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
#protistsonsky #bioinformatics
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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
Meta-analysis has never been easier!! (5/5)
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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
In this preprint (doi.org/10.64898/202...) we used it to survey anaerobic ciliates, so there is truly no organism too niche for EukCHARMer. We used it with the 18S rRNA gene, but it can certainly be used for other marker genes -- you just need to supply robust phylogenetic reference trees (4/5)
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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
EukCHARMer is a Snakemake pipeline that takes: NCBI SRA accession IDs + parameters + reference phylogenies and outputs: sequences from your taxa + count tables + metadata + taxonomic assignments, imports all of it into R and creates a couple of figures as a starting point for your analysis (3/5)
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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
Do you study an animal, plant, algae, or eukaryotic microbe and have ever thought, "Man, I wish there was a way to easily leverage the huge amount of public DNA sequencing data on online databases to quickly learn more about the global diversity and distribution of my beloved organism?" (2/5)
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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
Check out eukCHARMer, the new tool coming out of the Beinart Lab @symbiosisrox.bsky.social @urigso.bsky.social !! github.com/aschrecengos... (1/5)
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Anna Schrecengost @annaschreck.bsky.social · 24/09/2026
Here (doi.org/10.64898/202...) we used this tool to survey anaerobic ciliates, so there is truly no organism too niche for EukCHARMer. We used it with the 18S rRNA gene, but it can certainly be used for other marker genes -- you just need to supply robust phylogenetic reference trees. (4/5)
doi.org
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Maximilian Ganser @mhganser.bsky.social · 18/06/2026
Tiny unicellular #eukaryotes, big #biomaterial inspiration. Excited to share our Nature Communications study showing that tintinnid ciliates build their chemical- and heat-resistant shells from self-assembling proteins we call Tintinnidorins. doi.org/10.1038/s414... #protistsonsky 1/3
Swimming tintinnid ciliate in its transparent showing the shell-material granules containing the Tintinnidorin proteins accumulated around the circular zone of membranelles of the newly developing cell.
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Anna Schrecengost @annaschreck.bsky.social · 10/06/2026
Makes me think of this diva
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ISEP @isepprotists.bsky.social · 01/06/2026
New #ISEPpapers #preprint! A billion-year-old bacterial machinery replicates plastid DNA and supports kleptoplastidy www.biorxiv.org/content/10.6... #Protists #Algae #Microbes #Bacteria #Evolution #Symbiosis #Plastids
a complicated figure from the linked paper showing three evolutionary trees and schematic representations of microbial cells showing an evolutionary scenario
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Anna Schrecengost @annaschreck.bsky.social · 14/05/2026
New preprint about closely-related #methanogens living inside ciliates and animal guts!! We found that ciliate symbionts are functionally indistinct from free-living spp, while gut symbionts have streamlined genomes encoded for scavenging. read on if you're curious why 🤔 #ProtistsOnSky #SymbioSky
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Courtney Stairs @cstairs.bsky.social · 11/04/2026
We stumbled upon an unusual gene called 'rqua' in the genome of some freshwater sponges. In microbes, this gene confers the ability to make a ubiquinone analog - rhodoquinone - which can help the respiratory chain run without oxygen.
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Enrico Sandro Colizzi @escolizzi.bsky.social · 26/03/2026
How common is multicellularity in bacteria? And archaea? And how does it evolve? We wrote a short review "On the architecture and evolution of prokaryotic multicellularity". Preprint link: bit.ly/4ta06Gq Sharing and comments are much appreciated. 1/4
An overview of bacterial multicellular formations: biofilms, filaments, free-floating aggregates, motile collectives and fruiting bodies. For each form, we mention an analogous eukaryotic multicellular form (respectively animal epitelia, filaments in fungi, Volvox, Dictyostelium/social animals, Dictyostelium and other slime moulds)
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Julia Van Etten @couchmicroscopy.bsky.social · 27/03/2026
New paper alert!
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Luciana Santoferrara @lusantof.bsky.social · 27/03/2026
Our new article on #protist global distributions combining the #Mixoplankton and #metaPR2 databases with newly revised functional annotations. rdcu.be/fanlx
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Anna Schrecengost @annaschreck.bsky.social · 25/03/2026
receiving the onion in print each month brings me a lot of joy, this is a true steal
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more mr. spice guy @juniorhoncho.bsky.social · 21/02/2026
love when there's an article about how life is sustainable in the superheated waters surrounding a hydrothermal volcanic fissure on the ocean floor and then like six paragraphs in you find out the author's parents are chemosynthetic bacteria 🙄
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Courtney Stairs @cstairs.bsky.social · 09/02/2026
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.
biorxiv.org
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STCmicrobeblog @stcmicrobeblog.bsky.social · 03/02/2026
glad so many of you *like* the 𝘝𝘢𝘮𝘱𝘺𝘳𝘦𝘭𝘭𝘢 having lunch 🙂 but don't miss the recent work of beryl rapaport et al. on another amoeba, 🔥 𝘐𝘯𝘤𝘦𝘯𝘥𝘪𝘢𝘮𝘰𝘦𝘣𝘢 𝘤𝘢𝘴𝘤𝘢𝘥𝘦𝘯𝘴𝘪𝘴 🔥dancing at 63°C on STC 👉 smallthingsconsidered.blog/schaechter/2...
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Fabien Burki @fburki.bsky.social · 03/02/2026
onlinelibrary.wiley.com/doi/10.1111/... #protistsonsky
onlinelibrary.wiley.com
A Practical Approach to Study Uncultivated Protists Using Single‐Cell Techniques for Electron Microscopy
Protists represent a significant portion of eukaryotic diversity with a wide range of ecological roles, lifestyles, and diverse morphological traits. Despite their widespread importance in ecological....
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Dr. Roxanne Beinart @symbiosisrox.bsky.social · 03/02/2026
Excited to share that @michelle-hauer.bsky.social's paper with @katiekliermicrobe.bsky.social @maggielangwig.bsky.social @karthik-a.bsky.social on phage interactions with chemosynthetic symbionts was published today. #NSF and @schmidtocean.bsky.social supported. academic.oup.com/ismecommun/a...
academic.oup.com
Phage-microbe interactions may contribute to the population structure and dynamics of hydrothermal vent symbionts
Abstract. Deep-sea hydrothermal vent ecosystems are sustained by chemoautotrophic bacteria that symbiotically provide organic matter to their animal hosts
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Courtney Stairs @cstairs.bsky.social · 30/01/2026
The day is finally here!! On behalf of all the co-organizers the Comparative Genomics of Unicellular Eukaryotes website is open. comparativegenomics2026.com Invited speakers will be added to the website in the coming weeks. Watch this (well, that^) space!
comparativegenomics2026.com
CGUE 2026 – Comparative Genomics of Unicellular Eukaryotes 2026. San Feliu, Spain. 5-10 October
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500 Women Scientists @500womensci.bsky.social · 16/01/2026
The villains in this story are us...complicity is shared, whether we voted for the US administration that is responsible for this wave of violence or [not] ... its up to us to stop it & spend the rest of our lives making amends to the rest of the world. 500womenscientists.org/updates/2026...
500womenscientists.org
What we owe to ourselves and each other — 500 Women Scientists
Photo by Victor G on Unsplash In the 1st two weeks of 2026, we have seen the US government kidnap and kill people on US soil and abroad. Even in the US's sorted and dark history of imperialism an...
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Sergio Muñoz-Gómez @sergiophyceae.bsky.social · 23/12/2025
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...
P. tenue, its symbionts, and natural habitat
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c0nc0rdance @c0nc0rdance.bsky.social · 17/12/2025
“A process which led from the amoeba to man appeared to the philosophers to be obviously a progress - though whether the amoeba would agree with this opinion is not known" - Bertrand Russell, 1976. Time-lapse video of Vampyrella lateritia eating Spirogyra algae from Science Source/Oliver Skibbe. 🦠
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Fabien Burki @fburki.bsky.social · 18/12/2025
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...
nature.com
Identification of a deep-branching lineage of algae using environmental plastid genomes - Nature Communications
Here, the authors leverage data from the Tara Oceans expeditions to perform a phylogeny-guided plastid genome-resolved metagenomic survey and provide 660 non-redundant plastid genomes from marine alga...
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Holly Bik @hollybik.bsky.social · 17/12/2025
Announcing our next #NSFfunded workshop on "Telling Stories Through Data", co-lead by myself + @vgwschutte.bsky.social! It’s half bioinformatics data viz & half #SciComm - this year’s focus is host-associated microbiome datasets. Apply here to join us (form closes 1/10) bit.ly/TSTD2026 #symbiosky
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Holly Bik @hollybik.bsky.social · 16/12/2025
So excited to see this preprint out!! There is so much gold hiding in public eDNA studies, just waiting for taxon-focused investigations to pull out stories like this. Congrats on a great analysis @annaschreck.bsky.social @symbiosisrox.bsky.social
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Anna Schrecengost @annaschreck.bsky.social · 16/12/2025
Thank you holly!!
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Daan Speth @daanspeth.bsky.social · 05/12/2025
Respiratory endosymbionts, that allow their ciliate hosts to breathe nitrate instead of (or in addition to) oxygen are frequent members of the wastewater microbiome. 🦠 🖥️🧬 Great to see this work by @louison-nicolas.bsky.social published in ISME coummuncations! doi.org/10.1093/isme...
doi.org
Validate User
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Anna Schrecengost @annaschreck.bsky.social · 16/12/2025
I would bet they are trimyema
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Anna Schrecengost @annaschreck.bsky.social · 16/12/2025
wow thats very cool!!
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Anna Schrecengost @annaschreck.bsky.social · 16/12/2025
Check out our preprint!! So many cool analyses you can do with public rDNA datasets. Especially if you work with understudied groups or habitats! #ProtistsOnSky
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ISME - International Society for Microbial Ecology @isme-microbes.bsky.social · 25/11/2025
Microbes can store “memories” by collectively altering their environment. These externalized “memories” impact how microbial communities assemble. isme-microbes.org/bacterial-me... #MicrobeMemory #MicrobialEcology
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Aaron Ragsdale @apragsdale.bsky.social · 19/11/2025
Wisconsin Evolution is accepting applications for our Seminar Series' Early Career Scientist Award. Come share your evolution research and visit UW-Madison's evolution community. Open to grad students and postdocs (<5 yrs post PhD) from outside UW-Madison. Apply by Dec 15th here: shorturl.at/4a4O6
urldefense.com
Early Career Scientist Awards 2026
Application to the UW-Madison Evolution Seminar Series - Early Career Scientist Awards.
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Scott Coyle @cellraiser.bsky.social · 18/11/2025
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
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Nicole Dubilier @nicoledubilier.bsky.social · 14/11/2025
And vice versa, sulfur-oxidizing bacteria are masters of colonizing marine hosts! This was a wonderful collaboration with Sam Vohsen, Eslam Osman, Mandy Joye, Matt Saxton, grubervodicka.bsky.social, @ibaums.bsky.social
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Fabien Burki @fburki.bsky.social · 12/11/2025
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
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Jon Puritz @jonpuritz.marineevoeco.com · 10/11/2025
Job Opening **ASSISTANT PROFESSOR MARINE ECOLOGY**, Department of Biological Sciences, University of Rhode Island. jobs.uri.edu/postings/15960
Job Opening **ASSISTANT PROFESSOR MARINE ECOLOGY**, Department of Biological Sciences, University of Rhode Island.

The Department of Biological Sciences in the College of the Environment and Life Sciences (CELS) at the University of Rhode Island (URI) invites applications for an academic year (9 month), tenure-track Assistant Professor position specializing in Marine Ecology. URI, the top public university in New England, is a land and sea grant research university located in Kingston, Rhode Island, a beautiful seaside community that is well connected by car, bus, and rail about 40 min from Providence, an hour from Boston and 3 hours from New York City.
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Anna Schrecengost @annaschreck.bsky.social · 12/11/2025
This past Thursday I successfully defended my dissertation! Thank you @symbiosisrox.bsky.social and the rest of the lab for making it a super fun celebration! I dressed up my son as a #ciliate for the occasion and we jumped into Narragansett Bay at @urigso.bsky.social beach afterwards #ProtistsOnSky
The Beinart lab plus friends pose in front of chilly Narragansett Bay after their inaugural post defense polar plungeDr. Anna and her adorable son dressed as a ciliate wave goodbye to the zoom participants of her defense talk
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Anna Schrecengost @annaschreck.bsky.social · 05/11/2025
This is a long shot but does anyone know how to pronounce Epalxellidae?? 😂 #ProtistsOnSky
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Anna Schrecengost @annaschreck.bsky.social · 05/11/2025
Happening tomorrow!
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URI Graduate School of Oceanography @urigso.bsky.social · 31/10/2025
🎃 👻 Happy Halloween! Last-minute costume idea: giant tubeworm. 🦑 🌊
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Johana Rotterova @micrott.bsky.social · 09/10/2025
New paper out! 💌🔬Spirorhynchus verrucosus is a Muranotrichean and its sister has been livin' in the deep sea Santa Barbara Basin since the 90's! See them TUFTS!! Wonderful work of B Bourland & Cepicka Lab, R Beinart, & J Bernhard enabling deep sea sampling. Read h1.nu/spiror #ProtistsOnSky #MicroSky
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Anna Schrecengost @annaschreck.bsky.social · 24/10/2025
Well it might not reflect very well taken out of context 😂
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Anna Schrecengost @annaschreck.bsky.social · 24/10/2025
A burning boat
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URI Graduate School of Oceanography @urigso.bsky.social · 24/10/2025
✨🌊 The ones who get it, get it. ⬇️ 💭 What are we missing? #URIGSO
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Cameron Thrash @jcamthrash.bsky.social · 13/10/2025
Database Release: PPSDB, a Linked Open Data Knowledge Base for Protist–Prokaryote Symbioses onlinelibrary.wiley.com/doi/10.1111/... #jcampubs
onlinelibrary.wiley.com
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...
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Anna Schrecengost @annaschreck.bsky.social · 20/10/2025
Anaerobic protist illustrations by Avantika Velho
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Anna Schrecengost @annaschreck.bsky.social · 20/10/2025
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
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