Lightnews — Scholar-powered news

Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 2d

#auxin vs cell death
Aux/IAAs in stem cell niche

American Society of Plant Biologists @aspbofficial.bsky.social · 2d

#ASPBPlantPhysMonday #ICYMI

Plant Physiology @plantphys.bsky.social · Sep 1

The transcriptional repressors IAA5 and IAA29 participate in DNA damage-induced stem cell death in Arabidopsis roots (Naoki Takahashi , Nobuo Ogita , Toshiya Koike , Kohei Nishimura , Soichi Inagaki , Ye Zhang , Takumi Higaki , Masaaki Umeda) doi.org/10.1093/plph... #PlantScience

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 2d

#phenotyping

American Society of Plant Biologists @aspbofficial.bsky.social · 2d

#ASPBPlantPhysMonday #ICYMI

Plant Physiology @plantphys.bsky.social · Sep 3

A computer vision-based approach for high-throughput automated analysis of Arabidopsis seedling phenotypes (Zhongxiang Wan , Weiji Kong , Yan Tang , Feixiang Ma , Yusi Ji , Yang Peng , Ziqiang Zhu) doi.org/10.1093/plph... #PlantScience

Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 2d

Nice taproot 😅

Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 3d

#auxin

TMK vs PIN1
Goes with the Rodrigues paper

doi.org/10.1016/j.de...

Redirecting

doi.org

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 3d

#auxin
ABP1 and ABL3 in gravitropism via TMK1 mediated phosphorylation of PIN2

Memorable abbreviation for new biosensor: CRAP 😅

www.sciencedirect.com/science/arti...

ABP1/ABL3-TMK1 cell-surface auxin signaling targets PIN2-mediated auxin fluxes for root gravitropism

Phytohormone auxin and its directional transport mediate much of the remarkably plastic development of higher plants. Positive feedback between auxin …

www.sciencedirect.com

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 3d

#roots vs bacteria 💪

nikogeldner.bsky.social @nikogeldner.bsky.social · 5d

A long road to the Cover of Science!
www.science.org/doi/10.1126/...

Localized glutamine leakage drives the spatial structure of root microbial colonization

Plant roots release exudates to encourage microbiome assembly, which influences the function and stress resilience of plants. How specific exudates drive spatial colonization patterns remains largely ...

www.science.org

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 3d

#auxin vs calcium!

bioRxiv Plant Bio @biorxiv-plants.bsky.social · 3d

Ca2+ signature-dependent control of auxin sensitivity in Arabidopsis https://www.biorxiv.org/content/10.1101/2025.10.04.680446v1

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Xander Jones @xanderjones.bsky.social · 5d

Only a few days left to apply!

My group is looking for a postdoc to engineer and deploy new tools to precisely manipulate and decode how auxin coordinates plant morphogenesis.

@starmorph-syg.bsky.social

Research Associate - Reprogramming Development (closes 7 October 2025)

www.cam.ac.uk

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Current Biology @currentbiology.bsky.social · 7d

Sad news: Jane Goodall has died. She did more than any other human for our understanding and appreciation of our closest relatives, the chimpanzees.

That chimpanzees are Endangered tells you everything about our species and about what made her so exceptional.

www.nytimes.com/2025/10/01/o...

Jane Goodall, Eminent Primatologist Who Chronicled the Lives of Chimps, Dies at 91

www.nytimes.com

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Jay 🦋 @jay.bsky.team · 7d

“It actually doesn’t take much to be considered a difficult woman. That’s why there are so many of us.”
― Jane Goodall

💙 RIP to a real one. My childhood hero

Jane Goodall with monarch butterfly scarf

480 6.9K 33K

Reposted by Ghent Rooting-lab/Steffen Vanneste

scheuring-lab.bsky.social @scheuring-lab.bsky.social · 8d

Interested in plant hormones? Check out our newest research paper in @plantphys.bsky.social about a novel role of Salicylic Acid (SA) restricting growth: academic.oup.com/plphys/artic...

Salicylic acid inhibits V-ATPase activity and restricts cell elongation

The phytohormone salicylic acid directly inhibits V-ATPase activity and cell elongation thereby limiting plant growth.

academic.oup.com

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 9d

#notauxin 😉 but BR and RALF

Freddy Boutrot @freddyboutrot.bsky.social · 9d

A RALF-brassinosteroid signaling circuit regulates Arabidopsis hypocotyl cell shape doi.org/10.1016/j.cu...

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 9d

#auxin in physco without ARFs

Journal of Experimental Botany @jxbotany.bsky.social · 10d

🌱📖 RESEARCH 🌱📖

Bascom et al. used CRIPSR/Cas9 to produce a septuple AUXIN RESPONSE FACTOR mutant in the model bryophyte Physcomitrium patens , revealing the developmental consequences of the complete loss of auxin-mediated gene activation 🌱📖

🔗 doi.org/10.1093/jxb/...

#PlantScience 🧪

Fig. 4.Model of auxin de-repression. When the auxin concentration in the nucleus is low (A), the effect of ARFas, as well as other non-ARF transcription factors, is limited by Aux/IAA-mediated recruitment of the TPL co-repressor, closing the locus. As auxin levels rise (B), AFBs ubiquitinate Aux/IAAs, thereby allowing all transcription factors to act on the locus. As a result, there is a significant difference in gene expression between baseline and auxin induction. In afb1,2,3,4 mutants (C), Aux/IAAs are not degraded, and therefore the promoter remains closed. In the iaa2mDII degron mutant (D), one of three Aux/IAAs is stabilized, thereby resulting in only partial promoter closure. In arfasept lines, Aux/IAAs are not recruited to the promoter. While gene expression remains diminished without activating ARFs, other non-ARF transcription factors are allowed to provide baseline gene expression. However, there is no auxin-mediated induction.

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Nature @nature.com · 14d

Tylenol, or paracetamol, has been used to treat common pains and fevers since 1893, and is one of the safest drugs around

go.nature.com/3IDUgva

Tylenol is over 130 years old — why is it still the gold-standard painkiller?

Acetaminophen is one of the safest drugs around, but scientists still don’t know how it reduces pain and fever.

go.nature.com

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 14d

#auxin or at least oxIAA

Plant Physiology @plantphys.bsky.social · 14d

Cytosolic- and membrane-localized oxidized indole-3-acetic acid formation regulates developmental auxin transients (Mark Jenness, Reuben Tayengwa, Lillyanna House, Shiyun Cao, et al) doi.org/10.1093/plph... #PlantScience

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Greg Vert @plantubiquitin.bsky.social · 19d

Very cool story out about NRT1.1 also serving as ABA receptor to integrate nitrate and ABA responses in plants ! www.sciencedirect.com/science/arti...
@cellpress.bsky.social

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 20d

Lysosomal membrane missing link in allosteric activation of mTORC1 kinase complex. #nutrientsensing, metabolic integration. Something similar going on in plants? 🤔

Nature @nature.com · 20d

Nature research paper: Structural basis for mTORC1 activation on the lysosomal membrane

go.nature.com/3VmoKEU

Structural basis for mTORC1 activation on the lysosomal membrane - Nature

Cryo-electron microscopy was used to study human mechanistic target of rapamycin complex 1 (mTORC1) activation on lysosomal membranes, showing progressive recruitment by RAG–Ragulator, RHEB and RAPTOR, culminating in mTOR–membrane engagement and full enzyme activation.

go.nature.com

Reposted by Ghent Rooting-lab/Steffen Vanneste

Etienne Bucher 🌾🧬🇪🇺 @plantepigenetics.ch · 20d

Learned something interesting about 🌱GMO regulations yesterday:
Novel technologies will never be able to achieve a “history of safe use” because it was a single exceptional event in 2001 to allow a deregulation of mutagenesis ☢️🧬
That’s all, no future assessments and additions possible.

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 20d

#roots, cell cycle and modeling!

wabniklab.bsky.social @wabniklab.bsky.social · 21d

Did you know that there is a cell cycle duration gradient in plant root meristem? New story by joining forces between Plant dynamics lab and Crisanto Gutiérrez & Bénédicte Desvoyes lab @cbgpmadrid.bsky.social @cbm-csic-uam.bsky.social #Plants #roots #cellcycle www.nature.com/articles/s41...

Stem cell regulators drive a G1 duration gradient during plant root development - Nature Plants

A positional and developmentally regulated cell cycle duration gradient exists in the root meristem whereby the G1 phase is very long close to the stem cell niche. This relies on the interplay of PLET...

www.nature.com

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 21d

Really cool!

bioRxiv Plant Bio @biorxiv-plants.bsky.social · 21d

Clathrin-coated vesicles are targeted for selective autophagy during osmotic stress. https://www.biorxiv.org/content/10.1101/2025.09.16.676479v1

Reposted by Ghent Rooting-lab/Steffen Vanneste

nikogeldner.bsky.social @nikogeldner.bsky.social · 21d

Call for a tenure-track position at our Department of Plant Molecular Biology in Lausanne! We are searching for promising early-career researchers in the broad field of plant-organismal interactions. Deadline: November 30, 2025 - Please re-post!

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

Career Opportunities: DBMV: Tenure Track Assistant Professor towards Associate Professor in the field of Plant-organism (22484)

career5.successfactors.eu

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Sebastian Soyk @sebastiansoyk.bsky.social · 21d

Our department of Plant Molecular Biology at the University of Lausanne @unil.bsky.social is recruiting a Tenure-Track Assistant Professor in the field of Plant-Organism Interactions 🌱🐛🦠🍄! Application before November 30, 2025. See the official job ad for more details: tinyurl.com/mtxdcz6p

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 22d

#root development comes to bsk! Good to follow

rootdevelopment.bsky.social @rootdevelopment.bsky.social · 26d

Start of the Root Development group (VIB-Ugent) on Bluesky

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Ghent Rooting-lab/Steffen Vanneste @stvanneste.bsky.social · 22d

#roots

rootdevelopment.bsky.social @rootdevelopment.bsky.social · 26d

Looking for some clarity in the labyrinth of terms regarding lateral root initiation (priming, founder cell specification, pre-branch sites, oscillation zone, root clock,...)? Here is our new paper hopefully bringing some light in the darkness:
track.smtpsendmail.com/9032119/c?p=...

Marker-assisted in vivo imaging reveals pre-patterning events prior to lateral root organogenesis

The branching pattern of the Arabidopsis root is established as early as in the distal tip of the primary root.

track.smtpsendmail.com

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Reposted by Ghent Rooting-lab/Steffen Vanneste

Bjørn Panyella Pedersen @bjornppedersen.bsky.social · 23d

Interested in structural biology, membrane proteins, biophysics and working to understand hormone transport in plants?☘️🔬👩‍🔬🧪
We have an open PhD position:
- 3 years fully funded.
- Details and application link: www.linkedin.com/posts/plant-...
Please repost 💚

🚀 Exciting PhD opportunity in structural biology & plant science! 🌱 PhD Position – Structural and Functional Studies of Plant Membrane-Protein Transporters 📍 Molecular Biology & Genetics -… ...

🚀 Exciting PhD opportunity in structural biology & plant science! 🌱 PhD Position – Structural and Functional Studies of Plant Membrane-Protein Transporters 📍 Molecular Biology & Genetics - Aarhus Un...

www.linkedin.com

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