Kaisa Kajala
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kaisakajala.bsky.social
Kaisa Kajala
@kaisakajala.bsky.social
Associate professor at Utrecht University, loves plant cell types & regulatory networks and their evolution.
Reposted by Kaisa Kajala
By combining molecular genetics with cell-ablation experiments, we found that vascular cambium stem cells and xylem-identity cells form an interchangeable unit, a stem cell niche. Meticulous work by @xixizhang9001.bsky.social, Ondrej Smetana, Jing Zhang & Xiaoyu Wang 1/x www.pnas.org/doi/10.1073/...
Auxin transport positions stem cells in the vascular cambium during normal development and regeneration | PNAS
The vascular cambium contains bifacial stem cells producing secondary phloem in one and secondary xylem to the opposite direction. In Arabidopsis r...
www.pnas.org
November 14, 2025 at 9:30 AM
Reposted by Kaisa Kajala
Great opportunity for Early Career Researchers - Utrecht PhD Summer School 2026!

eps.sites.uu.nl
EPS Summer School | Universiteit Utrecht
We would like to invite you to join the PhD Summer School that has an attractive program with many expert speakers in the field of environmental signaling in plants. In addition to the invited speaker...
eps.sites.uu.nl
November 13, 2025 at 2:12 PM
Reposted by Kaisa Kajala
We are beyond excited to reveal the full line-up for our Environmental Signaling in Plants summer school 2026!

Registration is now open here eps.sites.uu.nl - we look forward to seeing you in Utrecht on 24th-26th August!
November 11, 2025 at 3:59 PM
Reposted by Kaisa Kajala
New paper is online! We used single cell RNA-seq & phylogenetics to identify 2 additional cell type specific TFs that control late-stage vinca alkaloid biosynthesis. The key insights originated from Camptotheca, another species that produces alkaloids. doi.org/10.1111/nph.... #PlantScience #SecMet
November 10, 2025 at 1:29 PM
EPS Theme 1 (plant development) symposium today in Utrecht!

Exciting talks so far and very lively Q&As! Proud to be part of this community 🌱

@epsgraduateschool.bsky.social
@violawillemsen.bsky.social
@renskevroomans.bsky.social
@uuplants.bsky.social
November 10, 2025 at 11:03 AM
Reposted by Kaisa Kajala
I am beyond thrilled (like the screaming and jumping type of thrilled) that my SNSF Starting Grant was funded. I will start my own lab @unibe.ch next year, studying succulent anatomy development and if and how this anatomy is required for efficient CAM photosynthesis in different Kalanchoë species 🌱
October 31, 2025 at 12:41 PM
Reposted by Kaisa Kajala
🎃 Why are (Halloween) pumpkins orange – and not pink or blue? This secret is explored by @bpucker.bsky.social, @nancy-choudhary.bsky.social and Marie Hagedorn. Their research examines how carotenoids took over, making Jack O’Lanterns forever orange: www.uni-bonn.de/en/news/colo.... Happy Halloween!
October 31, 2025 at 1:07 PM
Our recent Tansley Insight is already out of date 😂 doi.org/10.1111/nph....

Joking aside, I’m excited to see an inner cortex-specifying cue resolved!
October 30, 2025 at 7:37 PM
Reposted by Kaisa Kajala
Our article "Guns in Rosettes: The Arabidopsis chemical weapons arsenal" is finally published @plantphys.bsky.social!
You can download the #OpenAccess PDF here:

doi.org/10.1093/plph...

But real connoisseurs of #AntimicrobialCompounds will want to get the vinyl boxset: #PlantScience #PlantImmunity
October 9, 2025 at 7:58 AM
Check out the finale of the Plant Cell Identity webinar series! 🌱 🔬 🧬

We had a panel discussion with @oli-wilkins.bsky.social, @bas-bargmann.bsky.social and Marc Libault, on why and how we define cell types, and what could be done better.

I love this question and its complexity! ✨
In case you missed it...

The final installment of the Plant Cell Identity Webinar Series - The Open Panel Discussion, is now available on YouTube!

youtu.be/BNy3dNRphnc
Plant Cell Identity Webinar Series - The Open Panel Discussion
YouTube video by Plant Cell Atlas
youtu.be
October 29, 2025 at 2:09 PM
Incredibly exited to see @dorotakawa.bsky.social be awarded the "Dutch starting grant" (VIDI)! 🎉

And what a cohort, so many plant biologists awarded! Including @andrekuhn.bsky.social @charlieunderwood.bsky.social @kinpanchung.bsky.social - what a boost to the community and exciting science planned!
October 28, 2025 at 10:22 AM
Reposted by Kaisa Kajala
Delighted to be awarded NWO VIDI grant! We will study how microbes shape root cells to enhance plant stress resilience - so exciting!!!!

www.nwo.nl/en/news/149-...

Fantastic to see several plant projects granted🌽🌱
149 Vidi applications granted to talented researchers | NWO
NWO has granted a maximum of 850.000 euros to 149 scientists from the domain Science (ENW), Applied and Engineering Sciences (AES) and Social Sciences and Humanities (SSH) domains, as well as Health, Research and Development (ZonMw). With the help of the Vidi grant, the talented scientists can start their own line of research and further develop their talent.
www.nwo.nl
October 24, 2025 at 4:26 PM
Reposted by Kaisa Kajala
Final, edited version of the paper now available
www.sciencedirect.com/science/arti...
October 25, 2025 at 12:27 PM
Reposted by Kaisa Kajala
Simon's mutant finally published! Well done, Satoko' lab with Harro, Tobimatsu, Tohge collaborations. Glucosylation of endogenous haustorium-inducing factors underpins kin avoidance in parasitic plants | Science www.science.org/doi/10.1126/...
Glucosylation of endogenous haustorium-inducing factors underpins kin avoidance in parasitic plants
Parasitic plants rarely attack themselves, suggesting the existence of a kin-avoidance mechanism. In the root parasitic plant Phtheirospermum japonicum, prehaustorium formation is triggered by host-se...
www.science.org
October 24, 2025 at 12:29 AM
Reposted by Kaisa Kajala
Very happy to see our work out examining guard cell transcriptomes over the course of a slowly developing drought. Thanks to @bradylabs.bsky.social and @kaisakajala.bsky.social for the inspiration, way back in Davis in 2013! The data are available in bar.utoronto.ca/eplant & doi.org/10.1093/plce...
October 22, 2025 at 4:56 PM
Reposted by Kaisa Kajala
The @uncchapelhill.bsky.social Department of Biology is searching for tenure-track Assistant Professor in Plant Molecular Biology. Chapel Hill is a wonderful place and Biology is an amazing group of people. To apply, see:
unc.peopleadmin.com/postings/307...
October 6, 2025 at 7:30 PM
Reposted by Kaisa Kajala
...and if you missed it, here are 60 phylogenetically diverse brown algae genomes
www.cell.com/cell/fulltex...
October 2, 2025 at 9:11 AM
Reposted by Kaisa Kajala
October 1, 2025 at 7:09 AM
Reposted by Kaisa Kajala
Here's 123 new bryophyte genomes for you!
Apparently, bryophytes time and again include microbial genes in their genomic repertoire, and occupy a langer gene space than vascular plants.
www.nature.com/articles/s41...
Bryophytes hold a larger gene family space than vascular plants - Nature Genetics
A super-pangenome analysis incorporating 123 newly sequenced bryophyte genomes reveals that bryophytes exhibit a larger number of unique and lineage-specific gene families than vascular plants.
www.nature.com
September 25, 2025 at 5:18 AM
Reposted by Kaisa Kajala
Coming to you live from #ISPLORE2025JP Fresh preprint from my lab showing that leaves progressively oxygenate and how this is important for their morphogenesis.Thanks to our collaborators from @Fra_LicO2si lab. #plantscience
www.biorxiv.org/content/10.1...
September 22, 2025 at 6:47 AM
Reposted by Kaisa Kajala
Which fungal 🍄 molecules cause zombie 🧟‍♀️ ant 🐜 behaviors? @williamycete.bsky.social has begun to answer this question! He found a peptide that binds to scramblase and affects important odor-dependent behaviors in ants. Spoiler: worms 🪱 played a key role in this research 🧐 doi.org/10.1101/2025...
The First of Us: Ophiocordyceps use a novel scramblase-binding peptide to manipulate zombie ants
Parasite-adaptive manipulation of behavior is a widespread natural phenomenon. While Ophiocordyceps zombie fungi are well-known for hijacking ant behavior to increase their fitness, functionally chara...
doi.org
September 23, 2025 at 12:30 PM
Delighted to present our Tansley Insight on what we know about the potential of different root cortex layers to do develop into different things!

👩‍🔬 @dorotakawa.bsky.social @hannahschneider.bsky.social

📗 @newphyt.bsky.social

nph.onlinelibrary.wiley.com/doi/10.1111/...
Coordination of cortex modifications in time, space, and under stress
In roots, cell-type-specific differentiation enables specialized responses to environmental stress. The cortex, located between the vasculature and epidermis, is a key site for stress-responsive modi....
nph.onlinelibrary.wiley.com
September 19, 2025 at 3:32 PM
Starting in 3h or so - we will be discussing why and how we should be defining cell types and states - I expect really stimulating conversation and important suggestions for how to (not) use the terminology!

#PlantScience
@oli-wilkins.bsky.social @bas-bargmann.bsky.social @b-coli.bsky.social
TOMORROW!

The final segment of the Plant Cell Identity Webinar Series, The Open Panel Discussion is tomorrow, Sept. 16, 2025.

To Register: bit.ly/PCAPCI_Webinar

@kaisakajala.bsky.social
September 16, 2025 at 12:44 PM