Guillaume Théroux-Rancourt

Detailed representation of H2O gas exchange (left) and CO2 gas exchange (right) at the adaxial (upper) and abaxial (lower) leaf surfaces in an amphistomatous leaf. This panel illustrates the separate gas exchange processes for each leaf surface, which can be measured individually if the upper and lower cuvettes are analysed separately—though this setup is not common in commercial gas exchange systems. Stomatal, cuticle, and boundary layer resistances are depicted for both surfaces, along with the mole fractions of water vapour and CO2.

Excited to share our paper with Anna Gardner and @florianabusch.bsky.social in Plant Ecophysiology!🌿

We review challenges in interpreting plant stress responses using gas exchange data, offer solutions to improve accuracy and discuss gaps in our current knowledge.

www.sciltp.com/journals/Pla...

A microCTscan showing a pine leaf in cross section at 0.56 micron resolution, high-detail anatomy with visible plastids.

The memory of past water abundance shapes #trees 7 years later

New #AJB research by Alana R. O. Chin, @arthurobuntspecht.bsky.social, Omar Laín, Isabella Østerlund, Marcus Schaub, @guillaumetr.bsky.social, Klara Voggeneder & Janneke Hille Ris Lambers

doi.org/10.1002/ajb2... #botany #Pineaceae

🌲 Trees have long memories! Our study shows Scots pine trees remember past water abundance even 7 years after irrigation stops! bsapubs.onlinelibrary.wiley.com/doi/full/10....

Wishing the Elsevier editors who desk-accepted this all the best for their next career moves.

doi.org/10.1016/j.ij...

Here is a working Starter Pack for Plant Ecophysiologists! Please let us know if you want to be added to this list in a comment or DM. #botany #plantecophys #PhysFam

go.bsky.app/Pbq39H7

Welcome everyone new to bluesky! We're building a great plant phys/ecophys community. Check out @bsa-ecophys.bsky.social and their starter pack.

Leaf day respiration involves multiple carbon sources and depends on previous dark metabolism Plant, Cell & Environment is an ecology journal analysing the ways plants respond to their environment including biological, physiological and ecological factors.

Leaf day respiration involves multiple carbon sources and depends on previous dark metabolism

This book focuses on content intrinsically related to the infrastructure surrounding data analysis in R, but does not delve into the data analysis itself. A holistic workflow provides guidance on project-oriented workflows that address common sources of friction in data analysis. Personal R administration empowers R users to confidently manage their R programming environment. All is Fail showcases functions, options, and RStudio capabilities for debugging code, facilitating more efficient resolution of errant code.

"What They Forgot to Teach You About R" great ressource even for people with good experience in R and Rstudio

Let's "(re)designing our R lifestyle" :)

rstats.wtf

Thanks 👏 to :

Jennifer Bryan
Jim Hester
Shannon Pileggi (@pipinghotdata.bsky.social)
E. David Aja

🧪🌍 #rstats #ggplot2

A low-cost open-source imaging platform reveals spatiotemporal insight into leaf elongation and movement A modular and low-cost phenotyping setup with an open-source image analysis pipeline shows the importance of spatial and temporal resolution in understanding di

Low cost open-source plant imaging platform, developed by fantastic PhD candidate @lisaoskam.bsky.social and including scripts for automated image analysis for leaf properties on our linked GitHub, now out in Plant Physiology
doi.org/10.1093/plph...

New OA Article: "A self-regulatory cell-wall-sensing module at cell edges controls plant growth" rdcu.be/dAAog

With a News & Views: "On the edge — how plant cells monitor growth" rdcu.be/dAAtQ

Cell edges sense mechanical stresses from neighbouring cells. #PlantScience

Great collaboration between biologists and computer scientists. Need robust 3D nuclear segmentation? In deeper tissue layers with poor nuclear staining? Wide applicability? This and more in our latest paper..

bit.ly/3uG2Brd

#PlantScience #PlantBiology #PlantDevelopment #PlantCellBio #PlantEvoDevo

schematic of water movement in the soil plant system

📣 JOB AD from my awesome colleague Valentin Couvreur

➡ PhD Grant on plant water deficit 🌱 🌳 🏞 in the project "The Plant Water Pump" 😀 #Experimental #Forest #Greenhouse #ERC

🌾🧪

More details over here: lnkd.in/eAHrPFJU

Embracing uncertainty: The way forward in plant fossil phylogenetics Although molecular phylogenetics remains the most widely used method of inferring the evolutionary history of living groups, the last decade has seen a renewed interest in morphological phylogenetics....

my first paper of the year (and my first ever single author paper) has been finally published!

Do you work on fossil plants? Do you feel that your phylogenies are too uncertain? Don't fear uncertainty, EMBRACE IT! 🧪🌾🌱

New paper out in PC&E! Look here if you're after some guidance on how to gas exchange: onlinelibrary.wiley.com/doi/10.1111/...
What measurements are appropriate for your question and how to best take them? Initiated by Maria Papanatsiou, with @cavycavs.bsky.social and many others

Fill a plant's air spaces with water and it no longer can sense the direction of light. Revelatory finding from Christian Fankhauser's lab. Power of genetics!

#plantscience

We introduce a mathematical model to connect innovation and obsolescence across diverse systems like economics, biology, and science. Taking the “space of the possible,” we model how it grows from innovation and decays with obsolescence.

www.pnas.org/doi/10.1073/...

Mechanisms of grapevine resilience to a vascular disease: investigating stem radial growth, xylem development and physiological acclimation

🍇🌿Great news! The newly published paper ‘Mechanisms of grapevine resilience to a vascular disease: investigating stem radial growth, xylem development and physiological acclimation’ in @annbot by Ninon Dell' Acqua and co-authors is now #free for a limited time. (1/7) 
👉  botany.fyi/qK2u5y
#AoBpapers

Vol. 1 - "Will we do the drawing again this year?" I teach an introduction to data science for biology majors. The greatest challenge of this class is to help students build up an intuition about the many...

Kraft paper? ✅
Introducing machine learning concepts to biology majors? ✅
Icebreaker activity that isn't too awkward? ✅

Check this out in Vol. 1 of my newsletter! 🧪

In Neubau: Cafe Comet for amazing coffee and local feeling. La Spiga for the best pizza I ever had (and I have high standards).

Not to forget - Palmenhaus in Schönbrun Park: classic Victorian greenhouse with a nice plant collection. The parc is nice to see but not essential on a short stay. /end

For a classic Viennese coffee house: Cafe Sperl, close to the Natural History Museum. Less or no line up than the ones in the 1st district and with more locals.

Neubau (7th district): lots of nice streets to stroll and places to eat. I’m biased because I lived there. 2/.

Definitely the Natural History Museum! Been there countless times when we lived in Vienna.

Historic centre: It’s nice but there are closer neighbourhoods where you can get a better feeling of why Vienna is such a great city. 1/.

Asplenium nidus plant growing on a pot as part of the experimental desing.

🌿New article in @aobp.bsky.social on the impact of climate change on Asplenium nidus, a common epiphytic fern in tropical and subtropical wet forests. Is epiphyte growth more water- or nutrient-limited?

Full #openaccess
👉 bit.ly/41FVXNQ

From Selfies to Science - Precise 3D Leaf Measurement with iPhone 13 and Its Implications for Plant Development and Transpiration https://www.biorxiv.org/content/10.1101/2023.12.30.573617v1 Advanced smartphone technology has unified sophisticated, cost-effective sensors, broadening access

From Selfies to Science - Precise 3D Leaf Measurement with iPhone 13 and Its Implications for Plant Development and Transpiration https://www.biorxiv.org/content/10.1101/2023.12.30.573617v1

Valid

If you use the background_image() function from ggpubr (rpkgs.datanovia.com/ggpubr/refer...), you can display your ggPlantmap on top of a image. There is a small y-axis offset, but it can do the trick. I will work on implementing this function whenever I have some free time. #ggPlantmap

This paper is super super cool!! Did you know you can see the shadows of Joshua trees from Google map images? And then you can use that to estimate with pretty incredible detail the range? You can, and they did!! Check it out.