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Reposted by Center of Excellence in Tree Biology

Ari Pekka Mähönen @apmahonen.bsky.social · Jul 2

How plants sense injury in their barrier tissue, periderm? Painstakingly detailed and amazing work by post doc Hiroyuki Iida shows that wounding is sensed by the diffusion of two gases: ethylene and oxygen. @treebiocoe.bsky.social‬ @erc.europa.eu‬ 1/x 🧵 www.nature.com/articles/s41...

Plants monitor the integrity of their barrier by sensing gas diffusion - Nature

A study using Arabidopsis shows that plants can monitor the integrity of their outer barriers by sensing gas diffusion, enabling them to initiate wound repair to prevent water loss and pathogen entry.

www.nature.com

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Apr 10

Today we gather to honor the memory of Professor Jaakko Kangasjärvi. An inspiring leader, mentor, and driving force in our Center of Excellence in Tree Biology. His visionary work shaped our research and our community. We carry his legacy forward, with gratitude and admiration. #plantbiology

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Reposted by Center of Excellence in Tree Biology

Kalle Leppälä @kallelep.bsky.social · Apr 9

My new preprint: When R ~ B(n, p) and n/k -> b > 0, then the k:th raw moment of R is asymptotically k^k (Psi +/- epsilon)^k. Earlier only upper and lower bounds of Psi existed, and a recent sharp result when n/k -> infinity. TODO: the case n/k -> 0. arxiv.org/abs/2504.05766

On raw moments of the binomial distribution

We study the $k$:th raw moment of a variable $R$ following the binomial distribution $\text{B}(n, p)$, where $n/k \rightarrow β> 0$. It is known that $\mathbb{E}(R^k)$ is bounded both from below and f...

arxiv.org

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Reposted by Center of Excellence in Tree Biology

Plant Physiology @plantphys.bsky.social · Apr 8

Water immunity overrides stomatal immunity in plant resistance to Pseudomonas syringae (Jasmin Kemppinen, Maximillian Pollmeier, Sanna Ehonen, Mikael Brosché, Maija Sierla) doi.org/10.1093/plph... #PlantScience

doi.org

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Feb 12

Yesterday we had a great talk by Tom Clement from the New Dawn Bio startup on the potential of growing wood in cell cultures. Hosted by Wiktoria Fatz from our CoE.

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Reposted by Center of Excellence in Tree Biology

Cezary Waszczak @cezarywaszczak.bsky.social · Jan 14

Have you ever wondered how pectin acetylation affects cell adhesion? Together with @breeannau.bsky.social we have the answer! Check our our joint preprint!
@treebiocoe.bsky.social
www.researchsquare.com/article/rs-5...

TBR is an RG-I rhamnose O-acetyltransferase required for epidermal cell adhesion in Arabidopsis thaliana

Pectins are enriched in primary cell walls and the middle lamella, determining cell-to-cell adhesion. O-acetylation of pectin backbones influences their physicochemical properties and plays a role in ...

www.researchsquare.com

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Nov 9

Ari Pekka Mähönen @apmahonen.bsky.social · Nov 8

Finally out! We identified the stem cell factors (CAILs) of the vascular cambium, and a mechanism involving a ligand sequestration to position the stem cells. This work is a result of fruitful collaboration with @peteretchells.bsky.social and Tusscher labs. 🧵 1/x
www.science.org/doi/10.1126/...

Identification of cambium stem cell factors and their positioning mechanism

Wood constitutes the largest reservoir of terrestrial biomass. Composed of xylem, it arises from one side of the vascular cambium, a bifacial stem cell niche that also produces phloem on the opposing ...

www.science.org

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Reposted by Center of Excellence in Tree Biology

Peter Etchells @peteretchells.bsky.social · Nov 7

Our paper on cambium stem cells is out www.science.org/doi/10.1126/...

Identification of cambium stem cell factors and their positioning mechanism

Wood constitutes the largest reservoir of terrestrial biomass. Composed of xylem, it arises from one side of the vascular cambium, a bifacial stem cell niche that also produces phloem on the opposing ...

www.science.org

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Oct 4

Delicious wild mushrooms from the foraging day organized by our PhDoc Society 🍄‍🟫🌲🌲🍄

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Sep 27

Third and final day of “Plants in a changing world” with brilliant talks on plant development

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Sep 26

Day 2 of our meeting with many presentations and discussions on plant adaptation and plasticity 🌳🌱

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Sep 25

Day1: all set and ready to start!

Center of Excellence in Tree Biology @treebiocoe.bsky.social · Sep 25

First day of our meeting “Plants in a changing world” cohosted by @viikki_plants and us.

We have a fantastic lineup of speakers and poster presentations.

More info https://www.helsinki.fi/en/researchgroups/viikki-plant-science-centre/plants-in-a-changing-world-2024

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Center of Excellence in Tree Biology @treebiocoe.bsky.social · Aug 14

Looking forward to today’s session of TreeBio meets Forest Science. From weeds to trees we will discuss contemporary challenges in studying plant development and adaptation

from genes to the environment, and back.

#Viikkicampus

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