Sarah Courbier

Fig. 1 (shortened, full legend in paper): Regulation of TOR function by chloroplast-derived metabolites. (A) Photosynthetically derived sugars exported from the chloroplast activate TOR (via phosphorylation, P) in distal plant tissues. Sugar regulation of TOR can occur via SnRK1, or potentially via other routes (dashed arrow). Notably, TOR activation by sugar in roots requires mitochondrial function. (B) DHAP, a triose phosphate product of photosynthesis, positively regulates TOR in the green alga Chlamydomonas. (C) Active TOR directly phosphorylates the ABA receptor PYL, thereby inhibiting it. ABA, whose precursors are made in the chloroplast, binds PYL. ABA-bound PYL binds and inhibits the PP2C phosphatase, activating SNRK2. Active SNRK2 directly phosphorylates the RAPTOR subunit of TOR, inhibiting TOR activity.

🌿🔁 SPECIAL ISSUE REVIEW 🔁🌿

Crespo et al. examine the central role of the TOR kinase in linking nutrient availability to chloroplast function, detailing emerging evidence of reciprocal regulation between TOR signalling and photosynthesis in plants and algae 🧪

🔗 doi.org/10.1093/jxb/...

Fig. 1.The core energy management machinery, comprising SnRKs, TORC, and the T6P pathway, and its interactions with multiple signals through complex feedback regulation to regulate growth and resilience trade-offs.

⚡🌱 SPECIAL ISSUE EDITORIAL 🌱⚡

🔎 The Energy Management guest editors Wahl, Hanson & Menand dive into reviews and research exploring the plant energy management machinery as a central hub for stress resilience, development, and crop improvement 🌱

🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪

Join us at the #SEBconference Florence 2026 to discuss #Plant Robustness! 🌱🔥

@kaspervangelderen.bsky.social and I are organising the P12 session "Plant robustness from molecules to ecosystems" with the support of @greenrobust.de

Check the program and submit your abstract by March 6th! 👇

I have a PhD student and a post-doc position available in my lab to work on plant photobiology. Please use the links below to postulate.
Please RT, many thanks
career5.successfactors.eu/career?caree...

career5.successfactors.eu/career?caree...

Apply for our PhD program on Evolution Ecology Organismal Biology (Integrative! Biology)

Dec 1 2025 deadline

Check out the Flyer below for more information on our #MOILAB!

Link to Flyer
docs.google.com/document/d/1...

@ucberkeleyofficial.bsky.social
@hhmi.org

Understanding Host Compatibility in the Marchantia-Phytophthora System (CARELLA_J26DTP) | Doctoral Training Partnership The fossil record demonstrates that filamentous microbes invaded ancient plant cells with intracellular hyphal structures over 450 million years ago. To this day, a rich diversity of extant land plant...

New opportunity to undertake a PhD in my group ⁦‪at the John Innes Centre - if you’re interested in plant immunity and evolution check out the link!

How do cells communicate when it’s hot? (FAULKNER_J26DTP) | Doctoral Training Partnership Plant cells are connected to their neighbours via ‘tubes’ called plasmodesmata, creating an interconnected cytoplasm that joins cells within and between tissues and organs.

We have a project available for 2026 NRP Doctoral Training Partnership entry (i.e. PhD studentship opportunity!)

How do cells communicate when it's hot?

Don't know? Me either! Come work with us @johninnescentre.bsky.social and figure it out

biodtp.norwichresearchpark.ac.uk/projects/how...

🌱 One week to go until our next webinar 'all aabout' Roots & Soil! 🌱

📅 Tuesday 24th Feb - 1pm GMT
Register for free 👉️ buff.ly/dcXsZR4

#plantscience #sustainableagriculture @annalsapplbio.bsky.social

“Every calorie we consume has passed through the phloem." @lkalmbach.bsky.social, now at the University of Neuchâtel, returned to share how pectate lyases and callose synthases and remorins shape sieve pore formation in developing sieve elements in the phloem.

📅 Feb 13 #PlantScience

Our dean opened the floor to the first sustainability day at Freiburg university, today!

Super initiative from our faculty today! It's great to see the overall motivation moving towards a more sustainable future! @biologyunifreiburg.bsky.social @uni-freiburg.de

Get ready to dance! 🕺💃

We’re excited to welcome Ór Ceilidh Band to play live at the YRSPP 2026 social evening! 🎻
Join us for a traditional Scottish ceilidh orscotland.com

🗓️Registration closes 15 February. Time is running out!⌛️yrspp.github.io/register

Looking forward to meeting you at PEM2026 this summer, in beautiful Montpellier 🌱 Registration is open, join us! 👇🏼

Plant Physiology webinar, Plant Ecophysiology. Feb 26. Speakers Amanda Cardoso, William Thomas, and Sabina Villadangos, hosted by Agustin Zsögön and moderated by Thomas Depaepe.

📅 Save the date! We have a free upcoming Plant Physiology webinar on Ecophysiology, 26 Feb (2PM GMT). 🌱

👉 More info and registration link: blog.aspb.org/plant-physio....

#PlantScience

IMPRS PhD Program The IMPRS-EBM is an international PhD program that lies at the intersection of Epigenetics, Biophysics and Metabolism. It integrates strategies from molecular biology and biochemistry with biophysical...

Open PhD position – join our lab in Freiburg

Through the IMPRS (Max Planck) program, we are looking for a motivated PhD student interested in signalling, and developmental mechanisms.

Be quick - deadline is tomorrow!

www.ie-freiburg.mpg.de/IMPRS-PhD-Pr...

Join us in Toulouse !!

I'm so excited to be speaking at the upcoming PME meeting in Montpellier alongside a wonderful lineup of speakers 🥹 Huge thanks to the organisers! Looking forward to a great meeting 😍

#APPLYNOW
📣 The CIBSS Team is hiring! We are looking for someone passionate about helping early-career researchers develop their skills, qualifications and career prospects🧑🏽🔬🧬
➡️ Coordinator of Early-Career Programs and Diversity Management
🗓️Deadline: Jan 18, 2026
🔗 uni-freiburg.de/en/job/00004767/

Congratulations! Super happy for you! 🎊🥂

🌳 PhD Position in Forest Genetics @uni-freiburg.de
Join the BeGenDiv project to study genetic diversity of ~30 tree & shrub species across Germany’s Biodiversity Exploratories.
🧬 Fieldwork, lab work, bioinformatics & interdisciplinary collaboration
More info & apply: uni-freiburg.de/stellenangeb...

👉iGEM Freiburg is recruiting motivated members for its 2026 team! 🧬🚀 Don't miss out and apply by Dec 30: kurzlinks.de/op05

🥳Read the report of their success in the 2025 iGEM Competition: kurzlinks.de/lcwr

#iGEM #SynBio #UniFreiburg
@biologyunifreiburg.bsky.social @fsbiologiefreiburg.bsky.social

🌱 Spotlight on #CIBSS #NextGenSignallingScientists!
Plant biologist @rimchaudhury15.bsky.social shows how curiosity drives discovery: plants can 'remember' rain, helping them survive flooding and adapt to a changing climate.

📖 Read more: kurzlinks.de/tc7v

#PlantBiology #WomenInSTEM #LifeScience

Warm temperatures trigger a surge in auxin signalling that speeds up both cell division and elongation, allowing young roots to grow longer. This discovery shows that roots can sense and respond to heat on their own, revealing a key below-ground adaptation that many crops may share.

🌱⚡🔬#RootStressWeek

Hormonal regulation of root growth under moderately elevated temperatures by Tilman Jacob et al. in @annbot.bsky.social

#freeaccess article
👉 doi.org/ps8z

#RootBiology #PlantStress #RootPhysiology #PlantScience

Even this?? 🫣

Super nice tradition we have here 😍

Celebration season is here — time for the traditional DOMPS PI Apéro! ✨
Xmas wishes from all of us 🎄💚
@dompsfr.bsky.social
#PlantScience

Join us for tomorrow´s 📢 CIBSS Seminar Series

🗓 09 Dec 2025 | 12:00–13:00
👩‍🔬 @julianeg.bsky.social, (@mpi-ie.bsky.social)
🎙 Endogenous retroviruses and mouse developmental malformations
📍 Lecture Hall, Institute of Biology I, Hauptstr. 1

See more: kurzlinks.de/iplv

#CIBSS #Science #Immunobiology

Very cool, Rory! Congrats!

🧪🌾 @cathbell62.bsky.social works @umeauniversitet.bsky.social & @ijpb-versaillescly.bsky.social in France and has been instrumental to establish #INUPRAG, a collaboration between @umeaplantsciencecentre.se, @inrae-france.bsky.social & @cragenomica.bsky.social.

Super cool, congrats Kas! 🎉

Congratulations, Amy! 🎉