Center of Excellence in Tree Biology

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.

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...

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

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...

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

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

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.

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...

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 ...

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

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

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

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

Day1: all set and ready to start!

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

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