Ari Pekka Mähönen
@apmahonen.bsky.social
Plant Developmental Biologist, Professor at
University of Helsinki. Funded by #ERCCoG & #Treebio CoE
Website: https://t.co/oFteNQ3WuH
University of Helsinki. Funded by #ERCCoG & #Treebio CoE
Website: https://t.co/oFteNQ3WuH
Pinned
Postdoctoral and Doctoral Researchers in Plant Developmental Biology
Postdoctoral and Doctoral Researchers in Plant Developmental Biology
jobs.helsinki.fi
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...
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...
Reposted by Ari Pekka Mähönen
Full professor for plant ecology in Regensburg. #plantscience #plantscijobs
jobs.zeit.de/jobs/w3-prof...
jobs.zeit.de/jobs/w3-prof...
February 2, 2026 at 10:43 AM
Full professor for plant ecology in Regensburg. #plantscience #plantscijobs
jobs.zeit.de/jobs/w3-prof...
jobs.zeit.de/jobs/w3-prof...
Reposted by Ari Pekka Mähönen
Given the described activators of cambium growth, we reasoned repressors were needed to balance the system. Here they are! www.biorxiv.org/content/10.6...
Discovery: Xing, Jingyi, Emma, Riikka, Anne-Maarit, Julia, Qing, Hanan, Raluca, Joanna, Yuqi, Wiki
#plantscience #plantdev
Discovery: Xing, Jingyi, Emma, Riikka, Anne-Maarit, Julia, Qing, Hanan, Raluca, Joanna, Yuqi, Wiki
#plantscience #plantdev
www.biorxiv.org
February 2, 2026 at 11:52 AM
Given the described activators of cambium growth, we reasoned repressors were needed to balance the system. Here they are! www.biorxiv.org/content/10.6...
Discovery: Xing, Jingyi, Emma, Riikka, Anne-Maarit, Julia, Qing, Hanan, Raluca, Joanna, Yuqi, Wiki
#plantscience #plantdev
Discovery: Xing, Jingyi, Emma, Riikka, Anne-Maarit, Julia, Qing, Hanan, Raluca, Joanna, Yuqi, Wiki
#plantscience #plantdev
Reposted by Ari Pekka Mähönen
Great news — forward looking voices are finally prevailing in the discussion on genome editing in crop plants!
Plant Breeding Innovation Clears Next Hurdle for EU NGT Framework
https://www.europesays.com/2737143/
The European Parliament’s Committee on the Environment (ENVI) has approved, by a strong majority, the compromise text on…
https://www.europesays.com/2737143/
The European Parliament’s Committee on the Environment (ENVI) has approved, by a strong majority, the compromise text on…
Plant Breeding Innovation Clears Next Hurdle for EU NGT Framework - EUROPE SAYS
The European Parliament’s Committee on the Environment (ENVI) has approved, by a strong majority, the compromise text on the NGT Regulation agreed in trilogue
www.europesays.com
January 28, 2026 at 1:30 PM
Great news — forward looking voices are finally prevailing in the discussion on genome editing in crop plants!
Reposted by Ari Pekka Mähönen
www.wur.nl/en/vacancy/f...
Become our new colleague (and next door neighbor) and lead a chair/group/department of Biophysics at Wageningen University. Reach out to me for info and please spread!!!
Become our new colleague (and next door neighbor) and lead a chair/group/department of Biophysics at Wageningen University. Reach out to me for info and please spread!!!
Full Professor and Chair Laboratory of Biophysics
We are looking for a Full Professor in the Biophysics chair group, part of Wageningen University & Research (WUR)
www.wur.nl
January 28, 2026 at 5:20 AM
www.wur.nl/en/vacancy/f...
Become our new colleague (and next door neighbor) and lead a chair/group/department of Biophysics at Wageningen University. Reach out to me for info and please spread!!!
Become our new colleague (and next door neighbor) and lead a chair/group/department of Biophysics at Wageningen University. Reach out to me for info and please spread!!!
Reposted by Ari Pekka Mähönen
Model bacteria that lack (or have minimal) defense systems have been crucial for understanding bacterial immunity. Now, there is a model defenseless plant. One may expect that this model can accelerate discoveries on plant immunity
Decoding plant defense signaling using the defenseless mutant
Baral and Brosché
nph.onlinelibrary.wiley.com/doi/10.1111/...
Baral and Brosché
nph.onlinelibrary.wiley.com/doi/10.1111/...
January 26, 2026 at 1:03 PM
Model bacteria that lack (or have minimal) defense systems have been crucial for understanding bacterial immunity. Now, there is a model defenseless plant. One may expect that this model can accelerate discoveries on plant immunity
Reposted by Ari Pekka Mähönen
Led by Professor Jane Langdale @biology.ox.ac.uk, the C4 Rice Project builds on decades of interdisciplinary research working to ensure global food security.
Discover the incredible story of the multi-decade battle to make better rice ⬇️
https://www.youtube.com/watch?v=T3RY0vxzFpg
Discover the incredible story of the multi-decade battle to make better rice ⬇️
https://www.youtube.com/watch?v=T3RY0vxzFpg
Making Better Rice: The quest to feed the world by hacking plant evolution
YouTube video by University of Oxford
www.youtube.com
December 5, 2025 at 2:15 PM
Led by Professor Jane Langdale @biology.ox.ac.uk, the C4 Rice Project builds on decades of interdisciplinary research working to ensure global food security.
Discover the incredible story of the multi-decade battle to make better rice ⬇️
https://www.youtube.com/watch?v=T3RY0vxzFpg
Discover the incredible story of the multi-decade battle to make better rice ⬇️
https://www.youtube.com/watch?v=T3RY0vxzFpg
Reposted by Ari Pekka Mähönen
Out First Release in @science.org this week:
A feedback loop allows two shoot stem cell populations to respond differently to environmental conditions: www.science.org/doi/10.1126/...
#plantscience
A feedback loop allows two shoot stem cell populations to respond differently to environmental conditions: www.science.org/doi/10.1126/...
#plantscience
A negative feedback loop between TERMINAL FLOWER1 and LEAFY protects inflorescence indeterminacy
Inflorescences of flowering plants adopt diverse genetically programmed and environmentally tuned architectures. By contrast, continued maintenance of the stem-cell pool within the apical meristem is ...
www.science.org
January 23, 2026 at 1:03 PM
Out First Release in @science.org this week:
A feedback loop allows two shoot stem cell populations to respond differently to environmental conditions: www.science.org/doi/10.1126/...
#plantscience
A feedback loop allows two shoot stem cell populations to respond differently to environmental conditions: www.science.org/doi/10.1126/...
#plantscience
Reposted by Ari Pekka Mähönen
Really exciting to get some press coverage on our Prototaxites paper @instmolplantsci.bsky.social @edinburgh-uni.bsky.social
www.bbc.co.uk/news/article...
www.bbc.co.uk/news/article...
Aberdeenshire fossil dating back 410 million years joins museum collection
Researchers say the fossil found in Aberdeenshire is neither plant nor fungus as previously thought.
www.bbc.co.uk
January 22, 2026 at 9:54 AM
Really exciting to get some press coverage on our Prototaxites paper @instmolplantsci.bsky.social @edinburgh-uni.bsky.social
www.bbc.co.uk/news/article...
www.bbc.co.uk/news/article...
Reposted by Ari Pekka Mähönen
PhD opportunity in the newly minted RO2T Respiration Group! Please share!
Interested in root biology, oxygen dynamics, imaging & modelling? We’re recruiting a PhD student at the University of Nottingham.
Deadline 15th February.
jobs.nottingham.ac.uk/Vacancy.aspx...
#plantscijobs #plantscience
Interested in root biology, oxygen dynamics, imaging & modelling? We’re recruiting a PhD student at the University of Nottingham.
Deadline 15th February.
jobs.nottingham.ac.uk/Vacancy.aspx...
#plantscijobs #plantscience
January 21, 2026 at 3:08 PM
PhD opportunity in the newly minted RO2T Respiration Group! Please share!
Interested in root biology, oxygen dynamics, imaging & modelling? We’re recruiting a PhD student at the University of Nottingham.
Deadline 15th February.
jobs.nottingham.ac.uk/Vacancy.aspx...
#plantscijobs #plantscience
Interested in root biology, oxygen dynamics, imaging & modelling? We’re recruiting a PhD student at the University of Nottingham.
Deadline 15th February.
jobs.nottingham.ac.uk/Vacancy.aspx...
#plantscijobs #plantscience
It is like listening a grandparent in a nursing home...
January 21, 2026 at 2:19 PM
It is like listening a grandparent in a nursing home...
Reposted by Ari Pekka Mähönen
Happy to present our latest: Evolutionary adaptations to the hormonal regulation of vascular tissue development | PNAS www.pnas.org/doi/10.1073/.... Work by Wei Xiao and funded by @erc.europa.eu
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
www.pnas.org
January 20, 2026 at 7:22 PM
Happy to present our latest: Evolutionary adaptations to the hormonal regulation of vascular tissue development | PNAS www.pnas.org/doi/10.1073/.... Work by Wei Xiao and funded by @erc.europa.eu
Reposted by Ari Pekka Mähönen
Great to visit @cbgpmadrid.bsky.social today for advisory board meeting and seminar. Exciting science here.
January 16, 2026 at 2:27 PM
Great to visit @cbgpmadrid.bsky.social today for advisory board meeting and seminar. Exciting science here.
Reposted by Ari Pekka Mähönen
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...
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...
January 13, 2026 at 12:50 PM
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...
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...
Reposted by Ari Pekka Mähönen
Great project and super nice working environment 👇
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...
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 11, 2026 at 8:03 AM
Great project and super nice working environment 👇
Reposted by Ari Pekka Mähönen
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...
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
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...
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...
Reposted by Ari Pekka Mähönen
paper is out now in Nature Plants, here is a link: Imputation integrates single-cell and spatial gene expression data to resolve transcriptional networks in barley shoot meristem development. Nat. Plants (2026). doi.org/10.1038/s414...
Imputation integrates single-cell and spatial gene expression data to resolve transcriptional networks in barley shoot meristem development - Nature Plants
Spatially resolved gene expression during barley development was done by integrating an scRNA-seq dataset from cells with unknown position with spatial transcriptomics. This dataset is publicly availa...
doi.org
January 8, 2026 at 12:49 AM
paper is out now in Nature Plants, here is a link: Imputation integrates single-cell and spatial gene expression data to resolve transcriptional networks in barley shoot meristem development. Nat. Plants (2026). doi.org/10.1038/s414...
Reposted by Ari Pekka Mähönen
🧵 Just out in Cell after more than 10 years in the making!
🎓 www.cell.com/cell/fulltex...
Plants and animals evolve radically different body plans.
Do they also operate under fundamentally different molecular evolutionary constraints during organ formation?
@cellpress.bsky.social
🎓 www.cell.com/cell/fulltex...
Plants and animals evolve radically different body plans.
Do they also operate under fundamentally different molecular evolutionary constraints during organ formation?
@cellpress.bsky.social
January 7, 2026 at 11:50 AM
🧵 Just out in Cell after more than 10 years in the making!
🎓 www.cell.com/cell/fulltex...
Plants and animals evolve radically different body plans.
Do they also operate under fundamentally different molecular evolutionary constraints during organ formation?
@cellpress.bsky.social
🎓 www.cell.com/cell/fulltex...
Plants and animals evolve radically different body plans.
Do they also operate under fundamentally different molecular evolutionary constraints during organ formation?
@cellpress.bsky.social
Reposted by Ari Pekka Mähönen
Did you ever wonder how a dividing cambium cell looks like and what determines its striking regular division? Xiomin Liu, PhD student in the lab, found out in a heroic histological approach. Fruitful collaboration with the group of Sabine Müller (@phragmoplast.bsky.social) doi.org/10.64898/202...
December 21, 2025 at 10:28 AM
Did you ever wonder how a dividing cambium cell looks like and what determines its striking regular division? Xiomin Liu, PhD student in the lab, found out in a heroic histological approach. Fruitful collaboration with the group of Sabine Müller (@phragmoplast.bsky.social) doi.org/10.64898/202...
Reposted by Ari Pekka Mähönen
#TansleyInsight | On growth and flow: hydraulic aspects of aboveground meristems
@jalonsos.bsky.social 👇
📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
#LatestIssue #PlantScience #TansleyMedal
@jalonsos.bsky.social 👇
📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
#LatestIssue #PlantScience #TansleyMedal
December 20, 2025 at 11:00 AM
#TansleyInsight | On growth and flow: hydraulic aspects of aboveground meristems
@jalonsos.bsky.social 👇
📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
#LatestIssue #PlantScience #TansleyMedal
@jalonsos.bsky.social 👇
📖 nph.onlinelibrary.wiley.com/doi/10.1111/...
#LatestIssue #PlantScience #TansleyMedal
Reposted by Ari Pekka Mähönen
Latest from our lab in 2025. A wonderful collaboration with Sabrina Sabatini's team at Sapienza University of Rome. How mechanical signals contribute to root growth and zonation @cbgpmadrid.bsky.social @upm.es doi.org/10.1126/scia...
Cell wall–derived mechanical signals control cell growth and division during root development
Mechanical changes in elongating root cells guide division of neighboring cells, shaping root development.
doi.org
December 20, 2025 at 9:15 AM
Latest from our lab in 2025. A wonderful collaboration with Sabrina Sabatini's team at Sapienza University of Rome. How mechanical signals contribute to root growth and zonation @cbgpmadrid.bsky.social @upm.es doi.org/10.1126/scia...
Reposted by Ari Pekka Mähönen
Join us! We are going to have a ton of fun this summer with 2 week projects on plant and animal morphogenesis! @maizel-lab.org is leading a module. For my section we are going to live image developing leaves.
Advanced grad students + postdocs: apply for the 2026 #kitpqbio summer course, "Physical Principles of Morphogenesis in Plants and Animals," at buff.ly/OXXMKEv. Apply by Feb. 1.
Course directors Adrienne Roeder (Cornell) and Sebastian Streichan (UCSB)
Course directors Adrienne Roeder (Cornell) and Sebastian Streichan (UCSB)
December 18, 2025 at 5:40 PM
Join us! We are going to have a ton of fun this summer with 2 week projects on plant and animal morphogenesis! @maizel-lab.org is leading a module. For my section we are going to live image developing leaves.
Congratulations, Juan! Also, what a cool logo!
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
Here is a brief description of our research interests:
www.upsc.se/juan_alonso_...
#PlantSciences
December 16, 2025 at 8:31 PM
Congratulations, Juan! Also, what a cool logo!
Reposted by Ari Pekka Mähönen
I had a great time writing this dispatch @currentbiology.bsky.social about Jacob Suissa's recent paper on the link between fern phyllotaxis and vascular architecture. "Evo–devo: Ferns flourished due to developmental covariance between leaves and vasculature"
authors.elsevier.com/a/1mH793QW8S...
authors.elsevier.com/a/1mH793QW8S...
December 15, 2025 at 4:09 PM
I had a great time writing this dispatch @currentbiology.bsky.social about Jacob Suissa's recent paper on the link between fern phyllotaxis and vascular architecture. "Evo–devo: Ferns flourished due to developmental covariance between leaves and vasculature"
authors.elsevier.com/a/1mH793QW8S...
authors.elsevier.com/a/1mH793QW8S...
Reposted by Ari Pekka Mähönen
Folks, our research group is looking for a new recruit. A research technician position is available (48 month contract). Please repost. durham.taleo.net/careersectio...
Senior Research Technician in Plant Tissue Culture and Genetics
Click the link provided to see the complete job description.
durham.taleo.net
December 13, 2025 at 10:05 PM
Folks, our research group is looking for a new recruit. A research technician position is available (48 month contract). Please repost. durham.taleo.net/careersectio...