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Varsha Mathur

@varshamathur.bsky.social
510 followers 261 following 45 posts

Evolutionary biologist | MSCA Postdoctoral Fellow @univienna | Previously EMBO Postdoctoral Fellow, JRF Brasenose College, Oxford Biology | protists/parasites/organelles 🔬🧬

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Reposted by Varsha Mathur
Evgenii Protasov @evgenii-protasov.bsky.social · 10/10/2026
The archaeon Sukunaarchaeum mirabile, associated with dinoflagellates, has a genome of only 238 kbp🧬🤯 #archaea #symbiosis #eukaryotes #protists #MicroSky @currentbiology.bsky.social www.cell.com/current-biol...
cell.com
A hidden archaeal lineage with an ultra-reduced genome retaining only its replicative core
Harada et al. describe an archaeon, recovered from a single marine plankton cell, whose 238-kb genome is the smallest known for the domain. It has lost nearly all metabolism but keeps the machinery to...
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Alex de Mendoza @alexdemendoza.bsky.social · 19h
How can a #GiantVirus 👾 lurk inside the host genome undetected? We find that epigenetic conflict lies at the centre of the ⚖️ between infection and co-existence with the host. Great collaboration with the Aylward lab out in @biorxivpreprint.bsky.social: www.biorxiv.org/content/10.6...
biorxiv.org
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Eva Nowack @evanowack.bsky.social · 21h
🔬Postdoc position available! Interested in uncovering the molecular mechanisms underlying host-endosymbiont interactions? Join our group and help us explore these fascinating biological partnerships! Deadline: 29. Oct Details & application: karriere.hhu.de/index.php?ac... Please spread the word!
karriere.hhu.de
Postdoc (m/f/d) in Endosymbiosis Research
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Iva Tolić @ivatolic.bsky.social · 09/10/2026
Very happy to see our work highlighted by @natcellbio.nature.com. A great team effort and a fascinating example of how a simple physical principle can connect mitosis across eukaryotes! @lgudlin.bsky.social, @krunovuk.bsky.social, @kopslab.bsky.social
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Itai Yanai @itaiyanai.bsky.social · 10/10/2026
1. CRISPR came from basic research on bacteria. 2. Optogenetics started with a discovery in algae. 3. The GFP protein comes from jellyfish. The biggest breakthroughs all trace to scientists following their curiosity, and this is one huge reason why we must keep funding basic research!
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Bigelow Laboratory for Ocean Sciences @bigelowlab.bsky.social · 10/10/2026
Cocco Channel: #BigelowLab is excited to celebrate #CoccolithophoreDay and splash these microbes across screens. Learn more about these single-celled marine phytoplankton: www.bigelow.org/files/books/coccoli… Happy International Coccolithophore Day! 🥳 📸: Colin Fischer.
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Michalis Averof @michalis-averof.bsky.social · 04/02/2026
Just discovered the wonderful covers of 'Genes to Cells', the journal of the Molecular Biology Society of Japan @mbsj-official.bsky.social – absolutely beautiful! here some examples inspired by mitosis, CRISPR, the DNA helix, and plant pigments
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Anna Lopatina @annalopatina.bsky.social · 08/10/2026
Heads-up! I’ll be starting my research group at MedUni Vienna in January 2027, with postdoc and PhD positions available soon. Looking for people interested in bacteria–phage interactions, bacterial defense systems, and phage anti-defense strategies. Please send your CV: anna.lopatina@univie.ac.at
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BejaLabTechnion @bejalab.bsky.social · 09/10/2026
Marine snow viscosity regulates microbial degradation and the ocean carbon sink www.science.org/doi/10.1126/...
science.org
Marine snow viscosity regulates microbial degradation and the ocean carbon sink
Bacterial degradation of marine snow aggregates is a major component of global carbon cycling. Whether aggregate carbon is released in the upper ocean or is sequestered at depth depends on its sinking...
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Reposted by Varsha Mathur
Thea F. Rogers @theafrogers.bsky.social · 09/10/2026
🧵 Out today in Nature Communications! How did an ancient reshuffling of the genome shape 3D genome architecture and gene regulation in squid, cuttlefish & octopus? 🦑🐙 We combined Micro-C, RNA-seq & ATAC-seq across species, developmental stages & tissues. doi.org/10.1038/s41467-026-77625-7
doi.org
Genome reorganisation and expansion shape 3D genome architecture and define a distinct regulatory landscape in coleoid cephalopods - Nature Communications
How genome organisation contributes to the evolution of biological complexity is poorly understood. This study shows evolutionary changes in 3D genome architecture rewires gene regulation in coleoid c...
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Paul & Virginie - Centriole Lab @centriolelab.bsky.social · 08/10/2026
We are updating our Expansion Microscopy (U-ExM) website with : - Protocols tips to help you get started - Examples of applications across different biological systems. - work in progress - an antibody database 👉 mocel.unige.ch/research-gro...
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erzbergerlab.bsky.social @erzbergerlab.bsky.social · 08/10/2026
Ribosome remodeling drives translation adaptation during viral infection and cellular stress: Molecular Cell www.cell.com/molecular-ce...
cell.com
Ribosome remodeling drives translation adaptation during viral infection and cellular stress
Tsai et al. discover that ribosome composition is reprogrammed in response to intrinsic and external cellular perturbations, which supports ribosome remodeling as a conserved mechanism that enables ad...
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Gaspar Jekely @jekely.biologists.social.ap.brid.gy · 07/10/2026
In our new paper by Kata Szabó et al. we present optimised sample-preparation workflows for volume electron microscopy for entire small marine organisms. The workflow includes high-pressure freezing, various freeze substitution protocols and synchrotron […] [Original post on biologists.social]
X-ray image of a platynereis annelid worm larva collected at the European Sycnrotron Facility at Grenoble. The left image shows morphological rendering of a 6-day-old Platynereis scanned at 100 nm/px, the right images show individual image planes of the same larva scanned at 55 nm/px or 20 nm/px.
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Will Ratcliff @wcratcliff.bsky.social · 07/10/2026
Out today in @nature.com: our review on how single cells evolve into multicellular organisms. With Ozan Bozdag, @kaitong25.bsky.social, Peter Yunker, and @matthewherron.bsky.social. rdcu.be/9ZuiKow9twKa For an overview, check out the video below.
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Sarah Guest @sarahmoeba.bsky.social · 07/10/2026
Thrilled to announce my work on Filoreta, a protist that looks like a neuron! authors.elsevier.com/c/1nvAC3QW8S...
authors.elsevier.com
Please wait whilst we redirect you
All content on this site: Copyright © 2026 Elsevier B.V., its licensors, and contributors. All rights are reserved, including those for text and data mining, AI training, and similar technologies. For all open access content, the relevant licensing terms apply.
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Javier del Campo @fonamental.bsky.social · 07/10/2026
An atlas of eukaryotic centromere architecture reveals recurrent evolutionary dynamics #protists www.biorxiv.org/content/10.6...
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Javier del Campo @fonamental.bsky.social · 07/10/2026
Stability in flexibility: Shifting alliances stabilize the symbioses of marine animals over 150 million years #symbiosis #microbiome www.science.org/doi/full/10....
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Debnath Ghosal @debnathghosal.bsky.social · 07/10/2026
When imaging at high mag using cryo-ET, field of view reduces. How to overcome this limit? How do we get a "bird’s-eye view" without compromising resolution? Our very own @HamishBrown has a solution to this: “montage tomography with a rectangular beam!” www.biorxiv.org/content/10.6...
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Steven Robbins @stevenjrobbins.bsky.social · 22/07/2026
It's out! Excited to present the Great Barrier Reef Microbial Genomes Database (GBR-MGD), a comprehensive DB of 1000s of high-quality prokaryote, virus, plasmid, and chromosome-level eukaryote MAGs using Nanopore long reads. Subthreads incoming. Please share widely. 🙂 www.nature.com/articles/s41...
nature.com
The planktonic microbiome of the Great Barrier Reef - Nature
The Great Barrier Reef Microbial Genomes Database compiles prokaryotic, viral and eukaryotic genomes from seawater collected from the Great Barrier Reef, providing a rich resource for the study of mar...
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Rachel M. Wheatley @rachelmwheatley.bsky.social · 02/10/2026
🔊 Fully-funded 4 year PhD: How does the microbiome evolve under repeated pathogen exposure? 🦠 Project looking at how commensal microbes resist pathogen invasion, impact of antibiotics on these outcomes, and selective pressures in the microbiome. Come join us at QUB! www.gla.ac.uk/postgraduate...
gla.ac.uk
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Alexis Stamatakis @stamatak.bsky.social · 06/10/2026
Applications for the 2027 summer school on Computational Molecular Evolution on Crete are still open at: meetings.embo.org/event/27-com... Strict Application Deadline: November 2
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Javier del Campo @fonamental.bsky.social · 05/10/2026
A conserved GTPase complex gates exocytosis for defence and parasitism across alveolates #protists www.nature.com/articles/s41...
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Thibaut Brunet @thibautbrunet.bsky.social · 05/10/2026
One reason (among many) to study protists: as a toolbox, nature is unbeatable
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Varsha Mathur @varshamathur.bsky.social · 05/10/2026
Let’s gooo protists!!! #protistsonsky
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Florent Waltz @florentwaltz.bsky.social · 05/10/2026
Huge congratulations to all three Nobel Laureates, and especially Peter Hegemann! 👏 His seminal work on the green alga Chlamydomonas 🦠 laid the foundation for optogenetics. Thank you for putting Chlamy in the spotlight! ✨ Proof that groundbreaking discoveries don't always come from animal models! 🔬
Chlamydomonas cells
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Anna Karnkowska @ankarn.bsky.social · 04/10/2026
Postdoc opportunity! Join PERKFresh project and explore Perkinsea diversity, ecology & host–parasite interactions in freshwaters 📍 University of Warsaw ⏰ Deadline: 6 Nov 2026 🔗 euraxess.ec.europa.eu/jobs/466845 #protistonsky #postdoc
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Manon Demulder @manondemulder.bsky.social · 02/10/2026
If you’ve always been curious about how algae fix carbon, @phaips.vd.st, @cellarchlab.com and I have put together the quickest route into pyrenoids. And if you don’t feel like reading at all, we have an accompanying poster doi.org/10.1242/jcs....
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Jarrett Byrnes @jebyrnes.bsky.social · 01/10/2026
Need to feel good about tiny things today, see The immeasurable value of plankton to humanity academic.oup.com/bioscience/a...
academic.oup.com
The immeasurable value of plankton to humanity
Abstract. Plankton, a diverse group of aquatic organisms, make Earth livable, regulate aquatic life, and provide benefits to human societies such as access
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Archaea Biology Vienna @archaea-vienna.bsky.social · 01/10/2026
Our paper on the dynamics of Asgard archaea (Promethearchaeota) is now out in Nature! Huge thanks to the reviewers for helping make the manuscript stronger. www.nature.com/articles/s41... Two “Lokis” stained for Lokiactin (FastAct, magenta), reaching toward each other to celebrate 🎉 #archaea
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Philipp Radler @radler92.bsky.social · 01/10/2026
The first paper of my PostDoc in Christa Schlepers group (@archaea-vienna.bsky.social) on the dynamics of Asgard archaea is now out in Nature! www.nature.com/articles/s41... This was a great team effort and I am looking forward to uncover the complex behavior of these cells further!
nature.com
Dynamic protrusions mediate crawling motility in Asgard archaea - Nature
Anoxic live-cell imaging shows actin-dependent crawling motility and dynamic protrusions in Asgard archaea, providing insights into cellular innovations that may have contributed to eukaryotic evoluti...
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Gaspar Jekely @jekely.biologists.social.ap.brid.gy · 30/09/2026
Update on: "Unravelling Cell Evolution and the Tree of Life, the Essence of Biodiversity: The Scientific Autobiography of Thomas Cavalier-Smith FRS, FRSC" I added a comprehensive bibliography of the works of Tom Cavalier-Smith as .odt and .bib file, the latter can be used to manage refs […]
biologists.social
Original post on biologists.social
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John Burns @burnsajohn.bsky.social · 30/09/2026
A planktic melange from the Gulf of Maine featuring juicy diatom chains from 100m depth waters.
A microscope image of a bunch of diatoms from a plankton tow in the Gulf of Maine
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Will Ratcliff @wcratcliff.bsky.social · 30/09/2026
Application review for the GRC in Microbial Population Biology will start October 15th! Please apply before then if you are keen on coming. www.grc.org/microbial-po...
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Tessa Montague @tessamontague.bsky.social · 29/09/2026
I'm excited to share our new preprint: Generation of a transgenic cephalopod tinyurl.com/pc86jxz8 Cephalopods (cuttlefish, octopus & squid) are crazy critters that dynamically camouflage to their surroundings by changing the color, pattern, & texture of their skin, which they control w their brain.
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Iñaki Ruiz-Trillo @multicellgenome.bsky.social · 28/09/2026
We have a new branch in the family tree of animals: Atreyea- a previously unrecognized lineage among the closest unicell relatives of animals. Led by @konsmitsi.bsky.social & @freejakoba.bsky.social together with a fantastic team of collaborators. 🔗 papers.ssrn.com/sol3/papers.... #protistsOnSky
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Kranzusch Lab @kranzuschlab.bsky.social · 10/09/2026
Stunning cryo-ET analysis from the Harrison Lab capturing every stage of how non-membrane viruses infect animal cells www.science.org/doi/10.1126/...
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Tominaga K. (tomiken) @pacyc184.bsky.social · 27/09/2026
Alteromonas macleodii breaches the diatom frustule triggering protoplast emergence and programmed necrosis-like death in Thalassiosira rotula | Nature Communications
nature.com
Alteromonas macleodii breaches the diatom frustule triggering protoplast emergence and programmed necrosis-like death in Thalassiosira rotula - Nature Communications
In this study, the authors show that the marine bacterium Alteromonas macleodii exploits the diatom Thalassiosira rotula by triggering programmed necrosis-like cell death. By forcing cells out of their silica shells and lysing them, this interaction may affect ocean carbon cycling.
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Ben Long @botbml.bsky.social · 27/09/2026
Spatial proteomics reveals carboxysome adaptation and mitochondrial proteome in Paulinella chromatophora www.cell.com/current-biol...
cell.com
Spatial proteomics reveals carboxysome adaptation and mitochondrial proteome in Paulinella chromatophora
Using LOPIT-DC-based spatial proteomics, Cadena et al. map the sub-organellar protein landscape of Paulinella chromatophora, a cercozoan with evolutionary-early-stage photosynthetic organelles. They f...
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Varsha Mathur @varshamathur.bsky.social · 24/09/2026
Karenia algal blooms are deadly 😮‍💨 this is why studying bloom regulation by parasites is very important 👀
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Javier del Campo @fonamental.bsky.social · 23/09/2026
Algae-specific immune modulation influences responses to heat and pathogen challenge in a symbiotic coral #symbiosis #coral www.science.org/doi/full/10....
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ERGA - European Reference Genome Atlas @ergabiodiv.bsky.social · 22/09/2026
🇨🇦🧬Welcome aboard! The @canadianbiogenome.bsky.social is a new ERGA Associate Partner. The project is Canada's contribution to the @ebpgenome.bsky.social, working to generate high-quality reference genomes for Canadian species, a great addition to our growing network 🔗 earthbiogenome.ca
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H. B. Beryl Rappaport @hbrappap.bsky.social · 22/09/2026
Our description of fire amoeba, 𝘐𝘯𝘤𝘦𝘯𝘥𝘪𝘢𝘮𝘰𝘦𝘣𝘢 𝘤𝘢𝘴𝘤𝘢𝘥𝘦𝘯𝘴𝘪𝘴, is now online at Cell! Thanks @oliverio.bsky.social and amazing team for questioning the limits of eukaryotes! 🔥 www.cell.com/cell/fulltex...
cell.com
A geothermal amoeba sets a new upper temperature limit for eukaryotes
The amoeba Incendiamoeba cascadensis demonstrates that eukaryotic life can withstand temperatures beyond what was thought possible and sheds light on molecular strategies for survival in extreme heat.
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Moi Expósito-Alonso (MOILAB) @mexpositoalonso.bsky.social · 21/09/2026
Fantastic Asst Professor positions open across multiple UC Berkeley departments @ucberkeleyofficial.bsky.social Plant/Algae/Microb aprecruit.berkeley.edu/JPF05522 Plant/Env aprecruit.berkeley.edu/JPF05382 Gen/Dev/Evo aprecruit.berkeley.edu/JPF05481 Eco aprecruit.berkeley.edu/JPF05489
aprecruit.berkeley.edu
Assistant Professor – Plant or Macroalgae-Associated Microbial Communities and Interactions - Plant and Microbial Biology
University of California, Berkeley is hiring. Apply now!
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Dmitri Petrov @petrovadmitri.bsky.social · 17/09/2026
We are searching for an Assistant Professor in Evolutionary Biology! Looking for colleagues asking fundamental questions relating to evolutionary processes and drivers of evolutionary patterns. If you think it is you, please do apply! And please repost. facultypositions.stanford.edu/jobs/assista...
facultypositions.stanford.edu
Assistant Professor in Evolutionary Biology - Stanford University, California, United States
The Department of Biology at Stanford University seeks applicants for a tenure-track Assistant Professor in Evolutionary Biology. A successful candidate will conduct research that asks fundamental que...
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Frank Melzner @frankmelzner.bsky.social · 18/09/2026
Our lab is hiring a long-term Postdoc in marine animal physiology (5 years). Great chance to work with us phenotyping mussels & to develop your own research program on questions of choice. Excellent lab and aquaristics facilities and easy access to European seas: jobs.univie.ac.at/job/Postdoc-...
jobs.univie.ac.at
Postdoc marine evolutionary physiology (University Assistant)
Postdoc marine evolutionary physiology (University Assistant)
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Will Ratcliff @wcratcliff.bsky.social · 15/09/2026
3/17 Graduate students and postdocs: we strongly encourage you to apply! The Gordon Research Seminar (GRS), organized by Noah Houpt (@noahhoupt.bsky.social) and Duhita Sant (@duhitasant.bsky.social), runs June 26–27, immediately before the GRC.
grc.org
2027 Microbial Population Biology (GRS) Seminar GRC
The 2027 Gordon Research Seminar on Microbial Population Biology (GRS) will be held in Andover, New Hampshire. Apply today to reserve your spot.
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Hiro Imachi @hiro-imachi.bsky.social · 17/09/2026
An interview article has been published in Nature. It focuses on the cultivation of Asgard archaea (formally, the phylum Promethearchaeota). www.nature.com/articles/d41...
nature.com
These bizarre, much-coveted microbes are revealing the origins of complex life
Researchers are racing to culture a menagerie of exotic organisms and finding lots of surprises along the way.
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Pawel Burkhardt @pawelburkhardt.bsky.social · 16/09/2026
Lovely to see several pieces of our ctenophore work featured in this beautiful new story from @quantamagazine.org 🪼 Great piece by @mstarling.bsky.social, also featuring work by @stevehaddock.bsky.social, @arnausebe.bsky.social & @hejnol.bsky.social. www.quantamagazine.org/ctenophores-...
quantamagazine.org
Ctenophores Aren’t Just Beautiful. They’re Biological Wonders. | Quanta Magazine
Comb jellies are helping answer fundamental questions in biology, from how the earliest nervous systems evolved to how bioluminescence works.
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Lily Khadempour @khadlily.bsky.social · 15/09/2026
I'm happy to share my new paper "A new conceptual framework for host-microbe symbiosis" If you've seen me give a talk in the last 5 years, then you've seen me talk about this. It's been a journey. academic.oup.com/ismehm/artic... #MicroSky #MicrobiomeSky
academic.oup.com
A new conceptual framework for host-microbe symbiosis
Abstract. Host-microbe relationships are studied across biological disciplines, with unique but overlapping conceptual frameworks arising from each of them
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Sally Warring @sallywarring.bsky.social · 15/09/2026
Come join team Protist at the Earlham Institute!
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