Charlotte Kirchhelle
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ckirchhelle.bsky.social
Charlotte Kirchhelle
@ckirchhelle.bsky.social
240 followers 170 following 28 posts
Plant cell/developmental biologist @RDP Lyon, loves cell edges, mechanics, and lateral roots
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ckirchhelle.bsky.social
Charlotte Kirchhelle @ckirchhelle.bsky.social · Aug 27
Thrilled to share our latest work: how plants control growth through activation of a surface-specific growth programme. Thanks @zoenv.bsky.social, @nathan-german.bsky.social and the other coauthors for all the hard work! www.biorxiv.org/content/10.1...
Plant cells at the organ surface use mechanical cues to activate a specific growth control programme
During morphogenesis of multicellular organs, cells acquire distinct identities that meet specific functional requirements. Epidermal identity is widely considered essential for plant morphogenesis du...
www.biorxiv.org
Reposted by Charlotte Kirchhelle
alexmartiniere.bsky.social
Happy to share this preprint, we describe how the membrane could shape the ROS nanoenvironment in plant responses to osmotic signals. Led by @arthur-poitout.bsky.social and amazing colleagues @yvonjaillais.bsky.social , @jbfiche.bsky.social , A Meyer, and J Ugalde.

www.biorxiv.org/content/10.6...
January 23, 2026 at 9:52 AM
Reposted by Charlotte Kirchhelle
jcellsci.bsky.social
Don't miss the early-bird deadline for our Imaging Cell Dynamics meeting taking place in Catalonia, Spain in May.
Early-bird deadline: Friday 16 January
View the preliminary programme here: www.biologists.com/wp-content/u...
#JCSImaging
January 12, 2026 at 10:38 AM
Reposted by Charlotte Kirchhelle
kirchhelle.bsky.social
Hot off the press in @lancetmicrobe.bsky.social!

In (Un)intended Consequences, we conduct a #socsci stocktake of 10 years of research on #AMR interventions, highlight the need for more contextual #antimicrobial governance & make recommendations #GAP'26! #IDSky

www.sciencedirect.com/science/arti...
(Un)intended consequences: a social sciences stocktake of a decade of Global Action Plan-inspired antimicrobial governance
Antimicrobial resistance (AMR) remains a major global health threat. Despite increasing international attention, AMR governance has often neglected so…
www.sciencedirect.com
January 15, 2026 at 8:41 AM
Reposted by Charlotte Kirchhelle
jalonsos.bsky.social
I’m very happy to share that next year I’m launching the Meristem Hydraulics Group. We will be at the @umeaplantsciencecentre.se (Sweden) & the University of Helsinki (Finland) @helsinki.fi

Here is a brief description of our research interests:
www.upsc.se/juan_alonso_...

#PlantSciences
December 16, 2025 at 7:29 PM
Reposted by Charlotte Kirchhelle
apmahonen.bsky.social
We’re hiring! 🌱
Open positions in my lab for candidates interested in cambium development in Arabidopsis, hybrid aspen, or silver birch. Apply now! Please repost! jobs.helsinki.fi/job/Helsinki...
Postdoctoral and Doctoral Researchers in Plant Developmental Biology
Postdoctoral and Doctoral Researchers in Plant Developmental Biology
jobs.helsinki.fi
January 9, 2026 at 2:45 PM
Reposted by Charlotte Kirchhelle
plantubiquitin.bsky.social
Check out our latest paper. Very glad to see this one finally out. Fantastic work by @charlotte-dlslle.bsky.social . Learn more about MBAP proteins and their roles in brassinosteroid signaling. www.sciencedirect.com/science/arti...
December 8, 2025 at 8:41 AM
Reposted by Charlotte Kirchhelle
plantophagy.bsky.social
Glad to have this finally published: www.sciencedirect.com/science/arti... lots of new data since the #preprint. If you are into selective #autophagy, #evolution, #proteostasis Please have a look!
December 1, 2025 at 5:44 PM
Reposted by Charlotte Kirchhelle
pauformosa.bsky.social
Check out our story in @plosbiology.org about how a nonrandom, clustered giant cell pattern forms in the sepal and leaf epidermis! It has been a great journey with @gweissbart.bsky.social, Frances Clark, Xihang Wang, @roederlab.bsky.social and co-authors.
journals.plos.org/plosbiology/...
A common pathway controls cell size in the sepal and leaf epidermis leading to a nonrandom pattern of giant cells
Arabidopsis leaf epidermal cells have a wide range of sizes and ploidies, but the mechanisms patterning their size and spatial distribution remain unclear. This study shows that the pathway controllin...
journals.plos.org
November 12, 2025 at 9:33 AM
Reposted by Charlotte Kirchhelle
newphyt.bsky.social
On growth and flow: hydraulic aspects of aboveground meristems

#TansleyInsight by Juan Alonso-Serra @jalonsos.bsky.social

nph.onlinelibrary.wiley.com/doi/10.1111/...

#plantscience
Hydraulic and molecular characteristics of the shoot apical meristem.
November 17, 2025 at 11:17 PM
Reposted by Charlotte Kirchhelle
biorxiv-plants.bsky.social
Sphingolipid-driven interleaflet coupling orchestrates Rho-GTPase recruitment to nanodomains for signal activation in plants https://www.biorxiv.org/content/10.1101/2025.11.06.686946v1
November 8, 2025 at 12:03 AM
Reposted by Charlotte Kirchhelle
biorxiv-plants.bsky.social
Nanoclustering of a plant transcription factor enables strong yet specific DNA binding https://www.biorxiv.org/content/10.1101/2025.11.05.686732v1
November 6, 2025 at 11:03 PM
Reposted by Charlotte Kirchhelle
jcb.org
In new study from Ryken, Bezanilla et al., analysis of PIIB-type calcium pump localization and function elucidates one of the molecular mechanisms that maintains the strength of the calcium gradient during polarized growth. rupress.org/jcb/article/...

#PlantBiology #Cytoskeleton #Trafficking
November 4, 2025 at 6:45 PM
Reposted by Charlotte Kirchhelle
maizel-lab.org
Our work on mapping the dynamics of phospholipids during lateral root formation is now published in @jxbotany.bsky.social We show that PI(4,5)P₂ plays a key role: targeted reduction in pericycle promotes LR development.
→ academic.oup.com/jxb/advance-...
November 4, 2025 at 9:19 AM
Reposted by Charlotte Kirchhelle
plantophagy.bsky.social
This Halloween, we have a spooky evolutionary story for you.
The brainchild of @delaconcepcionjc.bsky.social, Nick Irwin and our fantastic collaborators is now out in @natplants.nature.com www.nature.com/articles/s41...
Here’s why I love this work — and why I think you’ll enjoy it too. 👇
October 31, 2025 at 10:19 AM
ckirchhelle.bsky.social
Amazing news!! Congratulations!
matmajda.bsky.social Mateusz Majda @matmajda.bsky.social · Oct 31
Thrilled to be among the recipients of the SNSF Starting Grants! Congrats to all the incredible researchers funded this year. Can’t wait to keep exploring how plants grow, sense, and respond to mechanical forces. Plants and biophysics rock!🌱⚛️
snsf.ch Swiss National Science Foundation (SNSF) @snsf.ch · Oct 31
✨ Searching for extraterrestrial life or combating speech disorders: The SNSF is awarding #SNSFStartingGrants to 41 outstanding researchers. They will receive a maximum of CHF 1 million to lead a project with their own #research team at a Swiss university. 🚀

ℹ️ sohub.io/aq26
November 1, 2025 at 7:41 AM
Reposted by Charlotte Kirchhelle
kirchhelle.bsky.social
Delighted to announce a new project on the roots of the #symbiosis concept!

"Symbiotic Synergies: How the Body Became a Chimera" is funded by an Australian Research Council Discovery Award & will be led by Maureen O'Malley, Nic Rasmussen & myself!

Stay tuned for news & opportunities!
#microbiome
October 28, 2025 at 10:07 AM
Reposted by Charlotte Kirchhelle
biologists.bsky.social
This week has been special for us, marking 100 years of supporting biologists and inspiring biology. We celebrated our achievements at @zoologymuseum.bsky.social last night. We want to thank all our staff, whose continual inspiration and daily support for one another make our work possible.
Photo of whale at Museum of Zoology and photo of 100 cake
October 17, 2025 at 1:11 PM
ckirchhelle.bsky.social
My new obsession: brown algae!
brownalgaedev.bsky.social CharrierLab @brownalgaedev.bsky.social · Oct 11
📣 SBIS, a new vital fluorescent probe for live imaging of #brownalgae #kelp in 4D. Just published in J. Cell Science by the Charrier team at the @igflyon.bsky.social. Download PDF on our team webpage here ➡️ shorturl.at/H5A9p
with first author Marie Zilliox featured here ➡️ shorturl.at/AMMoH
Developping Fucus embryo labelled with the orange fluorescent probe SBIS (autofluorescent chloroplasts in red).
October 12, 2025 at 7:55 AM
Reposted by Charlotte Kirchhelle
hueihsuantsai.bsky.social
Very excited to see our @nikogeldner.bsky.social lab x Feng Zhou lab work featured on the cover of Science!
(1/5) We reveal how root architecture and nutrient leakage shape spatial patterns of microbial colonization, moving beyond traditional models of uniform exudation.
science.org Science Magazine @science.org · Oct 2
Using precise spatial and temporal analysis, researchers in Science provide insight into how bacteria around the root interact both with the plant and with each other.

Learn more in this week's issue: https://scim.ag/3WgNajk
A confocal microscopy image shows root-colonizing bacteria clustering around an emerging lateral root, where localized glutamine leakage induces spatially confined reporter activity.
October 2, 2025 at 10:35 PM
Reposted by Charlotte Kirchhelle
davidbiermann.bsky.social
Very excited to share that our paper "A RALF-brassinosteorid signaling circuit regulates Arabidopsis hypocotyl cell shape" is now published in @currentbiology.bsky.social !

Enjoy reading it!!

www.sciencedirect.com/science/arti...
October 1, 2025 at 2:49 PM
Reposted by Charlotte Kirchhelle
biologists.bsky.social
We're still accepting submissions for our next special issue: Cell Biology of the Nucleus

Guest edited by Abby Buchwalter and JCS Editor Megan King.

Submission deadline: 3 November

Find out more: journals.biologists.com/jcs/pages/nu...

#CellBiology #Nucelus #Cells #Biology #Academia #Research
Special Issue: Cell Biology of the Nucleus Guest Editor: Abby Buchwalter Deadline 3 November 2025 Journal of Cell Science call for papers
September 30, 2025 at 2:47 PM
Reposted by Charlotte Kirchhelle
plantbiomechanics.bsky.social
🌿Join us for the Webinar Series 2025 – Road to The 11th International Plant Biomechanics Conference 2026 🌍
📅 Webinar #1: Sept 25, 2025 | [Register: ugm.id/PBMweb1]
📅Webinar #2: Oct 9, 2025 | [Register: ugm.id/PBMweb2]
September 23, 2025 at 4:12 PM
Reposted by Charlotte Kirchhelle
zmbp-tuebingen.bsky.social
📢 Job alert! #PlantSciJob
We are opening a Professorship (W1-TT) in Plant Biochemistry at the ZMBP @unituebingen.bsky.social
Apply by October 17th

Please spread the word!

More info 👇
uni-tuebingen.de/fakultaeten/...
Open Professorship (W1-TT) at the ZMBP, University of Tübingen (Germany). Deadline October 17th. More info: https://uni-tuebingen.de/fakultaeten/mathematisch-naturwissenschaftliche-fakultaet/fachbereiche/zentren/zentrum-fuer-molekularbiologie-der-pflanzen/zmbp/job-opportunities/#c12494
September 9, 2025 at 10:38 AM
Reposted by Charlotte Kirchhelle
daanweits.bsky.social
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
ckirchhelle.bsky.social
Edges!!
dev-journal.bsky.social Development @dev-journal.bsky.social · Sep 22
Mapping the ways Sidekick is localised to cell junctions.
This Research Highlight showcases the work from Dhaval Gandhi, Jessica Treisman and colleagues: journals.biologists.com/dev/article/...
Sdk localization to tAJs does not require the first four Ig domains. (A) Diagram of the Sdk protein showing the six Ig domains (purple), thirteen FNIII domains (yellow), transmembrane (TM) domain (gray) and PDZ-binding domain (PDZ-BD, green). Brackets indicate the extent of the deletion in each CRISPR mutant. (B-E) Midpupal retinas stained for Sdk (B’-E’, red in B-E), Arm (B’’-E’’, blue in B-E) and GFP (green) to mark clones homozygous for sdkΔIg1-4 (B), sdk ΔIg1-6 (C), sdkΔIg5-6 (D) or sdkΔFN (E). Scale bars, 10 µm. (F) Quantification of Sdk levels at tAJs in clones homozygous for each mutant allele, normalized to wild-type regions of the same retinas. Error bars show mean ±s.e.m. ****, p<0.0001; ns, not significant for one-sample t test with 1 (dotted line) as the expected value. n = 10 retinas (sdkΔIg1-4), 8 (sdkΔIg1-6), 9 (sdkΔIg5-6), or 6 (sdkΔFN); each point is the mean of 10-11 junctions in that retina. Removing the first four Ig domains does not alter Sdk localization to tAJs, but deleting the fifth and sixth, all six Ig domains, or the FNIII domains strongly reduces it. Arrows in (C’, D’) indicate examples of tAJs with residual very low levels of SdkΔIg1-6 or SdkΔIg5-6.
September 22, 2025 at 8:51 PM