Tanner Robison
@tarobison.bsky.social
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📥 381
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I like Goofy Science Postdoc in Laura Gunn's lab at Cornell University he/him
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Tanner Robison
Martin Jonikas
12 days ago
Now published @PNASNews! SAGA1 and SAGA2 localize the starch sheath to the pyrenoid in Chlamydomonas reinhardtii
www.pnas.org/doi/10.1073/...
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Ben Long
16 days ago
Hornwort pyrenoids: a terrestrial exception with engineering lessons.
@tarobison.bsky.social
@fernway.bsky.social
@laura-gunn.bsky.social
@jcarlosvillarreal.bsky.social
academic.oup.com/plphys/advan...
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Validate User
https://academic.oup.com/plphys/advance-article/doi/10.1093/plphys/kiag247/8665231
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Ivan Radin
22 days ago
This is a section of juvenile moss (Physcomitrium patens) tissue, called protonemata. The apical cells expand by tip-growth, while subapical cells sometimes divide to make lateral filaments. Cytosolic GFP is in green, and chlorophyll autofluorescence is in magenta.
#microscopymonday
#moss
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Aparna Nair
24 days ago
add a skeleton here at some point
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Simon Hammann
29 days ago
Don't be shy to take on a little two-week side project. These five months will be the most precious three years of your academic journey.
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Madeleine Bonsma-Fisher, PhD
about 1 month ago
Cities aren't loud. Cars are loud!
@thewaroncars.bsky.social
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Arif Ashraf
about 1 month ago
🍀🔬 🔖 Kinase Partner Zinc Finger Protein modulates pollen tube growth by influencing tip vesicle trafficking
@plantphys.bsky.social
🔗
doi.org/10.1093/plph...
🔬 In the movie, Co-expression of SP1-mRFP and KPZP-eGFP in pollen tube.
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The War on Cars
about 2 months ago
We want to remind people that the "V" in "EV" stands for "vehicle," not "car." Electric cars have a very important role to play as we try to wean the world off of fossil fuels, but if you're able to go car-free or car-lite by getting an electric bike, that's even better.
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Opinion | Now Is the Perfect Time to Buy an Electric Vehicle
https://www.nytimes.com/2026/03/23/opinion/electric-vehicles-solar-gas-prices.html?unlocked_article_code=1.VVA.aQiL.gRD8ocv4LFJQ
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Ben Long
about 2 months ago
Update: carbonic anhydrases in plants, algae, and cyanobacteria Jim Moroney LSU.
academic.oup.com/plphys/advan...
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Update: carbonic anhydrases in plants, algae, and cyanobacteria
Abstract. This update discusses the physiological roles of carbonic anhydrase (CA) in plants and algae. It examines some new observations about the functio
https://academic.oup.com/plphys/advance-article-abstract/doi/10.1093/plphys/kiag172/8554308
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JCarlos Villarreal
about 2 months ago
It's the last week of the hornwort class, we'll be discussing species boundaries, ecology, biogeography and genomics. We'll have the pleasure of having
@peterwschafran.com
as our invited guest sharing his knowledge on hornwort genomics.
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Dr Astrid Biddle
about 2 months ago
I looked at an Isoetes while I was in Crete on holiday & under full inundation it forms a near-continuous marginal band. Mapping suggests ~2,500 plants rather than ~30 previous, so detectability/hydrology story. A geophyte persisting as a corm- a neat drawdown strategy.
@bsbibotany.bsky.social
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Karolina Heyduk
about 2 months ago
Sorry Duke maybe you shoulda kept your herbarium 💁♀️😡
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Mary Williams @PlantTeaching
about 2 months ago
Plant science research weekly, March 27
plantae.org/plant-scienc...
Review: Rare variants in crop genomes; “Conservatory” uncovers conserved non-coding sequences; Quinine deconstructed; Hornwort Rubisco promotes pyrenoids in other plants; Salt extrusion from mangrove pneumatophores (1/2)
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Michael Raissig
about 2 months ago
Our first study on how the leaf succulent Kalanchoë laxiflora makes stomatal subsidiary cells is finally peer-reviewed & out - and it made the cover! 🌵 🧬 🔬
doi.org/10.1126/scia...
Despite 150 years of evolution, grasses and Crassulacean succulents use the SAME gene to make subsidiary cells! 🤯
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Martin Jonikas
2 months ago
Now published
@natcellbio.nature.com
! Kinase KEY1 controls pyrenoid condensate size throughout the cell cycle by disrupting phase separation interactions
www.nature.com/articles/s41...
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FocalPlane
2 months ago
Our fantastic
#FluorescenceFriday
featured image was acquired by
@juliazheku.bsky.social
, a graduate student with
@aribidopsis.bsky.social
. The image shows a maize cross section, with a developing nodal root breaking through the basal stem node. Check out our post ⤵️:
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Featured image with Julia Zheku - FocalPlane
Featured image with Julia Zheku - News
https://focalplane.biologists.com/2026/03/13/featured-image-with-julia-zheku/
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Manon Demulder
2 months ago
Excited to announce I’m starting a new lab at
@gmivienna.bsky.social
(Vienna BioCentre) in Sept 2026 We study how carbon fixation is inherited and maintained in algae using cryo-ET, imaging, environmental sampling&more Looking for people who want to build the lab together, get in touch!
#teamtomo
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Aritz Roa-Eguiara
2 months ago
🚨Preprint! Happy to share the research from my PhD “Genome delivery of a contractile tailed phage and its superinfection exclusion mechanism”. We use cryoEM to study the genome ejection of the phage T4, revealing how the tape measure protein regulates the process.
www.biorxiv.org/content/10.6...
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Do you like it when weird organisms do silly things?? Then you're going to love this!
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2 months ago
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Magnus Kjærgaard
3 months ago
🚨New paper: We found - contrary to expectations - that oxygen is partially excluded from biomolecular condensates. We find a strong anti-correlation between oxygen and protein concentrations in the condensate showing that accessible volume dominates over polarity.
www.nature.com/articles/s41...
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Oxygen depletion in biomolecular condensates is dominated by macromolecular density - Nature Communications
Biomolecules can control biochemical reactions via droplets of macromolecules known as condensates. Here, it is shown that oxygen is partially excluded from such condensates due to the high concentrat...
https://www.nature.com/articles/s41467-026-69376-2
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Joel Boerckel
3 months ago
In this world, shipmates, sin that pays its way can travel freely, and without a passport; whereas Virtue, if a pauper, is stopped at all frontiers. -Melville
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Gravel Influencer
3 months ago
I'm already sick of "It's all a distraction from Epstein" replies. This regime is killing innocent people because our leaders are all power-hungry tyrants and war profiteers. When you say it's "just a distraction" you minimize the gravity of what's happening and the lives lost.
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New Phytologist
3 months ago
Rhizoids function as nutrient uptake organs in a non-vascular land plant Kanno et al.
nph.onlinelibrary.wiley.com/doi/10.1111/...
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New Phytologist
3 months ago
Evolutionary mobility and genetic dynamics of MORFFO genes: shuttling among ancient plant lineages Labiak et al.
nph.onlinelibrary.wiley.com/doi/10.1111/...
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Edoardo Gianni
3 months ago
How could a simple self-replicating system emerge at the origins of life? RNA polymerase ribozymes can replicate RNA, but existing ones are so large that their self-replication seems impossible. Could they be smaller? Excited to share our latest work in
@science.org
on a new small polymerase. 1/n
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A small polymerase ribozyme that can synthesize itself and its complementary strand
The emergence of a chemical system capable of self-replication and evolution is a critical event in the origin of life. RNA polymerase ribozymes can replicate RNA, but their large size and structural ...
https://www.science.org/doi/10.1126/science.adt2760
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Ben Long
3 months ago
Great fun working with Manajit Hayer-Hartl and her amazing team at
@mpibiochem.bsky.social
bringing this work on the beta-carboxyome protein ApN (CcmN) together.
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Alexis Verger 🧬🧫🧪
3 months ago
Look at this 🙂
#CryoEM
Structural basis for CTCF-mediated chromatin organization by
@lucas.farnunglab.com
@voslab.org
www.biorxiv.org/content/10.6...
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Ryo Yokoyama
3 months ago
Functional characterisation of bicarbonate transporters from the cyanobacterial SbtA2 family and subsequent expression in tobacco
academic.oup.com/jxb/article/...
@jxbotany.bsky.social
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Functional characterisation of bicarbonate transporters from the cyanobacterial SbtA2 family and subsequent expression in tobacco
Abstract. Cyanobacteria rely on bicarbonate (HCO3-) as the primary inorganic carbon (Ci) source for photosynthesis in aquatic environments. To use this Ci
https://academic.oup.com/jxb/article/doi/10.1093/jxb/erag055/8466555
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Ben Long
4 months ago
SAGA1 and SAGA2 localize the starch sheath to the pyrenoid in Chlamydomonas reinhardti
@mjonikas.bsky.social
www.biorxiv.org/content/10.6...
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https://www.biorxiv.org/content/10.64898/2026.01.27.702031v1
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James Barrett
4 months ago
How does molecular valency shape condensate assembly and function? We used the CO2-fixing organelle in algae—the pyrenoid—to find out… 🧵 Preprint here!:
www.biorxiv.org/content/10.6...
@cellarchlab.com
@phaips.vd.st
@biologyatyork.bsky.social
#Rubisco
#PhaseSeparation
#Condensates
#Pyrenoid
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JCarlos Villarreal
4 months ago
Next week we will have the pleasure of hosting Dr. Tanner Robison. Tanner will be talking about carbon concentrating mechanisms and hornwort pyrenoids !
@btiscience.bsky.social
@ulaval.ca
@ulaval.ca
www.nature.com/articles/s41...
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Sticker number modulates pyrenoid condensate assembly to support algal fitness Looking forward to reading this!
@james-r-barrett.bsky.social
@phaips.vd.st
ps.vd.st
www.biorxiv.org/content/10.6...
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Sticker number modulates pyrenoid condensate assembly to support algal fitness
The valency of intrinsically disordered proteins underpins liquid-liquid phase separation (LLPS), yet how this parameter shapes condensate function and cellular fitness remains poorly understood. Here we exploit the algal pyrenoid—a minimal, two component LLPS system—to directly link condensate properties to physiological performance. Pyrenoid assembly is driven by a disordered, multivalent Linker protein that binds Rubisco at symmetry-related surface sites, with the number of binding motifs (″stickers″) varying across species. Using Chlamydomonas reinhardtii , we systematically tuned sticker number from two to nine and examined effects on Rubisco condensation, pyrenoid architecture and CO2 fixation. Three stickers were sufficient for condensation in vitro, but at least four were required for pyrenoid assembly in vivo. Cryo-electron tomography and single-molecule tracking revealed that increasing sticker number enhances Rubisco packing and mobility, while time-resolved imaging and competition assays demonstrated that sticker number governs the kinetics of pyrenoid formation and determines cellular fitness under fluctuating carbon conditions. Our findings establish sticker number as an evolutionary tuning parameter that balances condensate formation, dynamics, and function, providing a quantitative framework for linking the molecular grammar of phase separation to biological fitness. ### Competing Interest Statement The authors have declared no competing interest. EPSRC, EP/W024063/1
https://www.biorxiv.org/content/10.64898/2026.01.27.701992v1
4 months ago
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Darius Kosmützky
4 months ago
Having fun with the microscope lately. Here’s one of my favourite artsy and slightly psychedelic shots of
#Marchantia
chloroplasts and a fluorescent membrane reporter. (z-stack maximum projection)
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Sean T. Collins
4 months ago
The people of Minnesota did that. Not Schumer and Jeffries, not Walz and Frey, not the standard-bearers of decorum. The People.
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taylr
4 months ago
brass solidarity band performing “stand by me” in the streets of whittier next to alex pretti’s memorial. the crowd started chanting “the people united will never be defeated” so they incorporated it into the song. i love minneapolis
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Christophe 🔬 Leterrier
4 months ago
From my go-to bikepacking website where I've never read anything remotely political. That's where we're at now
bikepacking.com/news/alex-pr...
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Alex Pretti, Killed by ICE, Was One of Us
Yesterday morning in Minneapolis, ICE agents murdered a member of our community, 37-year-old Alex Pretti. Learn more here...
https://bikepacking.com/news/alex-pretti-tribute/
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Evan Bernick, a finite mode with a smol hooman and a lorg floof
4 months ago
Got this from a first-year law student today. I’m going to turn comments and quotes off because I am going to respond in my own way and am not looking for advice. But I think people should see it.
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Kaitlin Is Just Getting Started
4 months ago
Memory is a fragile thing in this moment, so it is important to keep in mind that Hakeem Jeffries refused to whip his caucus against ICE funding earlier this week.
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Ray Delahanty | CityNerd
4 months ago
It’s possible we live in a country where 25-35% of the population thinks it’s good and just that masked armies are sent into blue cities to execute people who vote the wrong way
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Don Moynihan
4 months ago
One court decision, two different headlines. Guardian on the left, NY Times on the right. Which one more directly conveys information and the stakes to the reader?
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JCarlos Villarreal
4 months ago
Interested in learning about hornworts? Check out the on-line hornwort class
www.eaglehill.us/programs/sem...
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Eiko Fried
4 months ago
Carney in Davos:
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Iain Roberts
4 months ago
Yesterday it was cows using tools, today its penguins using satellite imagery.
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IMP
4 months ago
🧪Scientists from our Haselbach lab captured how proteins begin to fold as they’re being made. Using cryo-EM, they visualised chaperones guiding nascent proteins on the ribosome:
https://www.nature.com/articles/s41467-025-67685-6
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4 months ago
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Facundo Romani
4 months ago
Happy to share the pre-print on GEMMIFER, a novel ERF required for the initiation of gemma in Marchantia. One of the coolest phenotypes that I have ever seen. Congratulations to Yuki and Go, who led this research.
#PlantScience
@biorxiv-plants.bsky.social
www.biorxiv.org/content/10.6...
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Philippe Van der Stappen
4 months ago
Absolute stunning pyrenoid review well worth the read!
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Jerelle Joseph
4 months ago
How does protein folding change inside biomolecular condensates? Our new preprint put forwards a framework for predicting this!! 🥳🥳🥳🥳 work by the talented @nathanieldhess.bsky.social
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Frank Buffum
4 months ago
A reminder that not so long ago we honored immigrants in the US, even by carving monuments like this one at Immigration Point, over the Golden Gate connecting the Pacific to SF Bay.
@hcrichardson.bsky.social
@rebeccasolnit.bsky.social
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