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@mariebarberon

Plant Biologist, World traveler and Gourmet Associate Professor at the University of Geneva πŸ‡¨πŸ‡­ https://www.unige.ch/barberonlab/

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14.11.2024
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Latest posts by @mariebarberon

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Want to image apoplastic pH in plants? πŸ”¬

Two new papers from our team offer a full workflow plus open access analysis tools.
Congrats to @aroessling.bsky.social, Niklas Mayle and @lguerard.bsky.social

Nature Protocols: rdcu.be/e7R2E
BMC Methods: lnkd.in/dctpWJ3X

Happy Imaging!

11.03.2026 19:59 πŸ‘ 41 πŸ” 23 πŸ’¬ 0 πŸ“Œ 2
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Mechanical coordination of counter-gradient growth maintains organ curvature in the apical hook

www.biorxiv.org/content/10.6...

#plantscience

07.03.2026 17:14 πŸ‘ 12 πŸ” 7 πŸ’¬ 0 πŸ“Œ 1
Contact/Job - Department of Molecular and Cellular Biology - UNIGE

You are finishing your PhD and looking to continue in science?

The Martin lab @biology-unige.bsky.social has an open postdoctoral position in cell biology to study cell-cell fusion. For more information, please consult mocel.unige.ch/research-gro....

Thanks for reposting!

03.03.2026 09:42 πŸ‘ 60 πŸ” 74 πŸ’¬ 1 πŸ“Œ 2
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The actin cytoskeleton is required to maintain plant cell division orientation against cellular geometry Actin guides plant cell division, shaping tissues in ways that defy geometric constraints.

What a treat to see the work from Camila Goldy @camilagoldy.bsky.social et al., @rdplab.bsky.social @ensdelyon.bsky.social now published 🫢

www.science.org/doi/10.1126/...

18.02.2026 19:58 πŸ‘ 45 πŸ” 20 πŸ’¬ 1 πŸ“Œ 1
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(1/5)

I am very excited to share my simultaneous triple staining method for monocot roots. This method is not only faster but also utilizes a smaller volume of stain than traditional methods and minimizes mechanical tissue damage.

www.biorxiv.org/content/10.6...

18.02.2026 00:30 πŸ‘ 69 πŸ” 22 πŸ’¬ 2 πŸ“Œ 2
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🚨 Positions available in Plant Science! Please share. We’re hiring:
1. Postdoc
2.PhD (UK applicants only)
Focus: root oxygen dynamics, developmental signalling. Come help us uncover how O2 shapes root development.
More info here-
sites.google.com/view/root-re...
#plantscijobs #plantscience

11.02.2026 15:19 πŸ‘ 27 πŸ” 38 πŸ’¬ 0 πŸ“Œ 0
ENPER 2026 – European Network for Plant Endomembrane Research European Network for Plant Endomembrane Research

We are pleased to announce that registration and abstract submission for ENPER 2026 are now open!
The 25th meeting of the ENPER community will be held in Sofia over three days. Please visit the conference website for more details: enper2026.bio21.bas.bg

09.02.2026 14:03 πŸ‘ 6 πŸ” 8 πŸ’¬ 0 πŸ“Œ 0
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Happy to welcome @louisefougere.bsky.social, new postdoc in the lab!

03.02.2026 14:24 πŸ‘ 13 πŸ” 0 πŸ’¬ 0 πŸ“Œ 1

New preprint out! Zhoubo Hu et al "A redox-regulated RCC1-like protein controls catalase activity in Arabidopsis". We identify CAIR1, a UVR8-interacting protein, as a redox-responsive regulator of catalase localization and activity, maintaining cellular ROS balance. 🌱
www.biorxiv.org/content/10.6...

03.02.2026 11:17 πŸ‘ 18 πŸ” 17 πŸ’¬ 1 πŸ“Œ 0
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β—πŸ“’ The SNSF is adjusting its project funding as of 1 April 2026. Our goal is to stabilise success rates at a level that ensures funding for research of the highest quality. This is how we guarantee a fair chance for all researchers.

➑️ sohub.io/5x59

02.02.2026 08:15 πŸ‘ 1 πŸ” 5 πŸ’¬ 0 πŸ“Œ 2
2026 Salt and Water Stress in Plants Conference GRC The 2026 Gordon Research Conference on Salt and Water Stress in Plants will be held in Les Diablerets, Vaud (fr) Switzerland. Apply today to reserve your spot.

Were you considering applying to the 2026 GRC on Salt and Water Stress? Do you want to give an oral presentation? We are over 60% full, so apply soon! Consideration for oral presentations from submitted abstracts will occur on March 9, 2026. www.grc.org/salt-and-wat... Please re-post!

14.01.2026 23:21 πŸ‘ 10 πŸ” 13 πŸ’¬ 0 πŸ“Œ 0
A drought stress-induced MYB transcription factor regulates pavement cell shape in leaves of European aspen (Populus tremula) The leaf pavement cells of many plant species develop fascinating jigsaw puzzle-like shapes in which neighboring cells interdigitate with each other, providing an ideal model for the study of cell shape acquisition. We analyzed pavement cell shape complexity in a natural population of European aspen ( Populus tremula ) genotypes and then used a genome-wide association study (GWAS) approach to identify a new candidate gene in cell shape regulation, Potra2n8c18226, encoding the transcription factor MYB305a. We subsequently validated a role for MYB305a in regulating aspen leaf pavement cell shape. We then demonstrated that drought conditions strongly induced MYB305a promoter expression in these cells and provided evidence implying that MYB305a plays a role in simplification of the cell shape in response to drought stress. Finally, we demonstrated negative correlations of pavement cell shape complexity with water-use efficiency, as well as with average precipitation, latitude and longitude of the genotypes' original sampling sites in the natural European aspen population. Taken together, our results suggest that climatic variables affect the shape complexity of pavement cells in aspen leaf and provide a first step towards unravelling the molecular mechanisms controlling pavement cell shape acquisition in this species in response to environmental conditions, by implicating the involvement of the transcription factor MY305a. ### Competing Interest Statement The authors have declared no competing interest. Swedish Research Council, https://ror.org/03zttf063, VR-2020-03420 Kempe Foundation, https://ror.org/05cszw148, JCK-1732, JCK-1912 Knut and Alice Wallenberg Foundation, https://ror.org/004hzzk67 VINNOVA, https://ror.org/01kd5m353 European Research Council, https://ror.org/0472cxd90, ERC-2024-SyG STARMORPH 101166880 Trees and Crops for the Future (TC4F)

The latest biorxiv of the lab and first full poplar paper :-).
Nice collaborative work with Nat Street and Kathryn Robinson @umeaplantsciencecentre.se
@siamsadoyle.bsky.social
www.biorxiv.org/cgi/content/...

18.01.2026 16:02 πŸ‘ 11 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0

Have you ever heard that women have more chances than men of getting grants or positions in academia? Of course you have, and here are my personal views on this. With the shocking revelation that no, it is NOT TRUEΒ ! (1/n)

13.01.2026 18:36 πŸ‘ 115 πŸ” 77 πŸ’¬ 7 πŸ“Œ 6
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Save the date: Plant Development PhD school (i.e. Retzbach 2.0) in Neustadt, Germany.

Sept 23rd-25th, 2026
~€350 all inclusive

Excellent speakers and a relaxed atmosphere for early-career researchers (PhDs & postdocs). Registration opens soon.

For more info, see
raissiglab.org/plantdevosch...

13.01.2026 12:50 πŸ‘ 31 πŸ” 40 πŸ’¬ 2 πŸ“Œ 1
Poster inviting participants for Gordon Research Seminar on Salt and Water Stress in Plants happening on 23-24th May 2026 at Switzerland.

Poster inviting participants for Gordon Research Seminar on Salt and Water Stress in Plants happening on 23-24th May 2026 at Switzerland.

πŸŒ±πŸ“’Join us at the 𝐆𝐑𝐒 𝐨𝐧 π’πšπ₯𝐭 𝐚𝐧𝐝 π–πšπ­πžπ« π’π­π«πžπ¬π¬ 𝐒𝐧 𝐏π₯𝐚𝐧𝐭𝐬, 𝐌𝐚𝐲 23-24, 2026 in π’π°π’π­π³πžπ«π₯𝐚𝐧𝐝!

πŸ’‘Specially encourage ECRs to apply to present your work! Its a great forum to connect with peers and mentors in the field.

𝐀𝐩𝐩π₯π²πŸ‘‰ www.grc.org/salt-and-wat...

Please repost!
#plantscience #abioticstress #ECRs

12.01.2026 13:09 πŸ‘ 17 πŸ” 20 πŸ’¬ 0 πŸ“Œ 1
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Postdoctoral and Doctoral Researchers in Plant Developmental Biology Postdoctoral and Doctoral Researchers in Plant Developmental Biology

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...

09.01.2026 14:45 πŸ‘ 32 πŸ” 40 πŸ’¬ 0 πŸ“Œ 4
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Plant Kelch phosphatases are Ser/Thr phosphatases involved in cell cycle regulation Brassinosteroids (BRs) are plant steroid hormones sensed at the cell surface by the membrane receptor kinase BRI1. Activation of BRI1 leads to the dephosphorylation of BZR1/BES1 transcription factors ...

Our new year starts of course with new preprint on brassinosteroid signaling tinyurl.com/nhzcfkxd. We re-analyzed the function of Kelch phosphatases, which were previously characterized as protein tyrosine phosphatases that dephosphorylate the critical pTyr200 in the GSK3 kinase BIN2. (1/6)

07.01.2026 07:48 πŸ‘ 31 πŸ” 20 πŸ’¬ 1 πŸ“Œ 0
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Project funding restrictions envisaged The SNSF is responding to increased demand from researchers in order to ensure evaluation quality and stabilise success rates.

The SNSF is considering restrictions for its Project funding. Goal: to ensure the quality of evaluation & stable success rates despite an increasing number of applications and limited funding. The final decision will be made in January 2026.

πŸ‘‰ buff.ly/iGOCf7R

#research #science

18.12.2025 10:30 πŸ‘ 7 πŸ” 10 πŸ’¬ 0 πŸ“Œ 3
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Engineering plant immune responses (Plant BioDesign JIC project) at University of York on FindAPhD.com PhD Project - Engineering plant immune responses (Plant BioDesign JIC project) at University of York, listed on FindAPhD.com

We have a PhD studentship available for a student who wants to engineer immune responses by tinkering with the connectivity between cells. Based at JIC, collaboration with the Ezer lab, deadline 19th Jan, UK students only. Get in touch for more info! #PlantSciJobs

www.findaphd.com/phds/project...

15.12.2025 17:22 πŸ‘ 15 πŸ” 16 πŸ’¬ 0 πŸ“Œ 0
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JOB ALERT: Operations Director (DCI–Lausanne).
The DCI, a joint initiative of EPFL, UNIL, UNIGE and UNIBE, is recruiting an Operations Director to lead the cryo-EM facility in Lausanne.
πŸ“© Questions: CEO of the DCI: @chgenoud.bsky.social
πŸ”— Apply here: careers.epfl.ch/job/Lausanne...

17.12.2025 12:00 πŸ‘ 14 πŸ” 16 πŸ’¬ 0 πŸ“Œ 0
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New opportunity to join our #EvoMPMI group @johninnescentre.bsky.social as a Postdoctoral Researcher working on the mechanistic basis of immunity in diverse plants. Please spread the word, reach out by email, and/or apply if interested! More details here: www.jic.ac.uk/vacancies/po...

16.12.2025 11:32 πŸ‘ 36 πŸ” 59 πŸ’¬ 0 πŸ“Œ 1

🚨We’re hiring! Please help spread the word!
Our lab at @TheSainsburyLab is recruiting a pre-doctoral intern to work on plant immunity research. Ideal for those who are planning to pursue a PhD and seeking research experience. tatsuyanobori.com

15.12.2025 09:55 πŸ‘ 47 πŸ” 53 πŸ’¬ 2 πŸ“Œ 1
Postdoc (m/f/d) position on synthetic approaches to promote arbuscular mycorrhiza symbiosis

Are you interested in using synthetic approaches to promote arbuscular mycorrhiza symbiosis? Then our PostDoc position may be for you: jobs.mpimp-golm.mpg.de/jobposting/b...

05.12.2025 21:52 πŸ‘ 29 πŸ” 35 πŸ’¬ 0 πŸ“Œ 0
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@mbcapitao.bsky.social successfully defended her PhD today. Congratulations!

05.12.2025 20:33 πŸ‘ 33 πŸ” 5 πŸ’¬ 3 πŸ“Œ 0
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On growth and flow: hydraulic aspects of aboveground meristems Water is essential for plant growth under both normal and stress conditions. Aboveground, two key meristems control plant development: the shoot apical meristem and the vascular cambium. Here, stem c...

Very excited to share my first solo Tansley Insight. An integrated view on the hydraulics of aboveground plant meristems, and the framework of my future work as part of this community #PlantScience

@newphyt.bsky.social

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

17.11.2025 07:26 πŸ‘ 42 πŸ” 16 πŸ’¬ 1 πŸ“Œ 0
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How a humble weed became a superstar of biology Arabidopsis thaliana was always an unlikely candidate for the limelight. But 25 years ago, the diminutive thale cress launched the botanical world into the molecular era.

YAY! this is excellent! From Knowable Magazine: How Arabidopsis thaliana, a humble weed, became a superstar of plant biology | Knowable Magazine knowablemagazine.org/content/arti...

04.11.2025 00:23 πŸ‘ 8 πŸ” 3 πŸ’¬ 0 πŸ“Œ 0

Congratulations!!!

06.11.2025 07:04 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
2026 Salt and Water Stress in Plants Conference GRC The 2026 Gordon Research Conference on Salt and Water Stress in Plants will be held in Les Diablerets, Vaud (fr) Switzerland. Apply today to reserve your spot.

Interested in learning about the latest and greatest research in how plants respond to excess salt, too little or too much water? Come to the GRC in Salt and Water Stress in Switzerland. Lots of opportunities for all career levels. www.grc.org/salt-and-wat.... Please repost!

06.11.2025 01:06 πŸ‘ 45 πŸ” 33 πŸ’¬ 1 πŸ“Œ 2

New pre-print from the team!

The manuscript is @emma-raven.bsky.social's PhD work showing that whether a leaf is a carbon sink or a carbon source influences how they execute immune responses.

Have a read!

#PlantScience
@johninnescentre.bsky.social

14.10.2025 07:16 πŸ‘ 81 πŸ” 55 πŸ’¬ 0 πŸ“Œ 0
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Canonical tyrosine‐based motifs are required for constitutive endocytosis and polarity of IRT1 and contribute to metal uptake Control of IRT1 cell surface levels is critical for plant iron uptake from the soil and was previously shown to be regulated by ubiquitin-mediated endocytosis upon non-iron metal excess. Here, we she...

Great work by julien Spielmann now published in @theplantjournal.bsky.social.
onlinelibrary.wiley.com/doi/10.1111/...

13.10.2025 14:22 πŸ‘ 14 πŸ” 8 πŸ’¬ 1 πŸ“Œ 0