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wabniklab.bsky.social
@wabniklab.bsky.social
360 followers 110 following 13 posts
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Reposted
jxbotany.bsky.social
🌱📖 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.
September 29, 2025 at 10:42 AM
Reposted
jxbotany.bsky.social
🌱🧬 INSIGHT 🧬🌱

Complete loss of A-ARF activity in bryophytes reveals a role for auxin-adjacent regulatory networks – Flores-Sandoval & Bowman comment on an original research article by Bascom et al.

📝 Insight: doi.org/10.1093/jxb/...

🔬 Research: doi.org/10.1093/jxb/...

#PlantScience 🧪
Fig. 1 (shortened, full legend in paper): Auxin responses and auxin-adjacent transcription factors (TFs) control developmental transitions in bryophyte gametophytes. (A) Wild-type (WT) auxin responses (left) cycling between low and high auxin. Under low auxin, A-ARFs are kept in a repressive complex by AUX/IAAs via recruitment of the TOPLESS co-repressor and associated histone deacetylases (HDACs). Under high auxin, auxin mediates the interaction between TIR1/AFB and AUX/IAAs, leading to AUX/IAA ubiquitination and proteolysis. A-ARFs are then free to interact with SWI/SNF ATPases and histone acetylases (HACs), leading to open chromatin states. Positive (TIR1/AFB, A-ARF, SWI/SNF, HAC), negative (AUX/IAA, TPL, HDAC) and auxin-adjacent (TFs) factors are shown. Auxin is represented by an A.
September 22, 2025 at 1:32 PM
Reposted
kleinevehnlab.bsky.social
Thrilled to share our latest story on the ERAD machinery and how it controls the conditional turnover of PIN-LIKES for acclimative growth

www.science.org/doi/10.1126/...
ERAD machinery controls the conditional turnover of PIN-LIKES in plants
Plant ERAD machinery governs the turnover of auxin transporters involved in developmental and stress responses.
www.science.org
September 20, 2025 at 11:07 AM
Reposted
cbgpmadrid.bsky.social
🌱 #SeminarSeriesCBGP is back! 🎙️

Join us Sept 2025–Jan 2026 for top voices in plant science at CBGP

📍 CBGP Auditorium + Zoom
🕛 12:30 PM
🔗 Speakers & calendar: shorturl.at/Atsyn
📎 Full schedule w/ Zoom links: shorturl.at/yT3e6

Don’t miss it! 👩‍🔬👨‍🔬
September 19, 2025 at 8:50 AM
wabniklab.bsky.social
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
September 18, 2025 at 10:10 AM
Reposted
cbgpmadrid.bsky.social
#PaperCBGP

🌱🔬 Plant cell walls are more than physical barriers. They are dynamic shields!

A CBGP review published in @jxbotany.bsky.social explores how cell walls shape plant defense against pests, paving the way for more sustainable farming strategies ♻️🌍

📎 More: shorturl.at/GLNYL
September 10, 2025 at 11:39 AM
wabniklab.bsky.social
Check out our lab posters: P125 and P88 #ICAR25 #PlantScience @cbgpmadrid.bsky.social To learn about New 4D modeling simulators and auxin-dependent root growth!!
June 17, 2025 at 5:26 PM
wabniklab.bsky.social
PlantDynamics is recruiting a programmer to join efforts in developing plant (and other) organ simulators
euraxess.ec.europa.eu/jobs/341946
Contact me directly if you are interested: k.wabniK@upm.es
Join the PlantDynamics to develop next-gen 4D organ simulators
The @PlantDynamics Laboratory  (https://pdlab.es) is seeking a motivated and talented
euraxess.ec.europa.eu
May 8, 2025 at 3:11 PM
Reposted
richardsmithlab.bsky.social
The Camelot paper is now published. If you ever wanted to try biomechanics, Camelot is an inexpensive and easy way to get started. @matmajda.bsky.social

t.co/x3l0lllNS2
April 28, 2025 at 8:09 AM
Reposted
stephanpollmann.bsky.social
We have a new Doctor form the #pollmannlab in town 👨🏻‍🎓Congratulations to Adrián to his wonderful PhD defense 🎉 Outstanding job. Also a great shoutout to the panel for the critical assessment of the work. We will surely pick up some of the points.
@cbgpmadrid.bsky.social @etsiaabupm.bsky.social @upm.es
April 11, 2025 at 4:36 PM
Reposted
natplants.nature.com
Our editors write:

- Cell polarity: Unequal signalling and biosynthesis in daughter cells rdcu.be/egIl5
April 7, 2025 at 11:50 AM
Reposted
kierzkowskilab.bsky.social
Research Briefing by @routierlab.bsky.social and @sysilveira.bsky.social about our recent paper @natureplants.bsky.social
March 28, 2025 at 6:48 PM
Reposted
kierzkowskilab.bsky.social
Do you want to know how mechanical interaction between tissue layers controls the formation of complex organ shapes in plants? 🔬🌼
🚨Our latest collaborative work with @routierlab.bsky.social is now published @natureplants.bsky.social
Find out more👉 rdcu.be/efad3
Mechanical interactions between tissue layers underlie plant morphogenesis
Nature Plants - Anthers, the male reproductive organs in plants, are a model to explore the establishment of complex three-dimensional shapes. Live imaging, genetics and modelling reveal an active...
rdcu.be
March 26, 2025 at 2:22 PM
Reposted
jennyrussinova.bsky.social
🌱💡 Computational modeling and genetic experiments confirm that this asymmetry optimizes root growth, ensuring robust meristem function. @wabniklab.bsky.social
March 10, 2025 at 2:58 PM
wabniklab.bsky.social
Time-lapse imaging back then, Zeiss scope from 1950. #microscopy #timelapse #imaging
February 28, 2025 at 5:36 PM
wabniklab.bsky.social
Using computer modeling and quantitative analysis of plant transcriptomes, we show how common design principles in core clock control photoperiod-dependent florigen function in short-day vs long-day plants #clock #circadianclock #oscillators #flowering #plantgrowth
February 21, 2025 at 6:23 AM
wabniklab.bsky.social
Our take on Photoperiod regulation of core clock across plants:
www.sciencedirect.com/science/arti...
Regulatory principles of photoperiod-driven clock function in plants
The circadian clock provides a fundamental timing mechanism for plant fitting to seasonal changes in the photoperiod. Although photoperiodic regulatio…
www.sciencedirect.com
February 20, 2025 at 10:12 PM
Reposted
emmanuellebayer.bsky.social
and @ataly.bsky.social @bic-bordeaux.bsky.social
First authors Jessica Perez-Sancho, Marija Smokvarska , Gweenogan Dubois .
emmanuellebayer.bsky.social Emmanuelle Bayer @emmanuellebayer.bsky.social · Feb 20
Great collaboration with @yvonjaillais.bsky.social 🌱 Plants use membrane contact sites (MCS) for cell-to-cell signaling!
➡️ MCTP tethers & PI4P regulate ER-PM contacts in plasmodesmata, impacting trafficking.
➡️ MCS roles span intra- and intercellular communication.

www.cell.com/cell/abstrac...
Plasmodesmata act as unconventional membrane contact sites regulating intercellular molecular exchange in plants
Plant intercellular communication is regulated via tubular ER-PM membrane contact through PI4P and MCTP protein tethers.
www.cell.com
February 20, 2025 at 3:59 PM
wabniklab.bsky.social
Our lab is looking for a enthusiastic researcher with the master degree (Computational Biology, Computer Science, Game development) to develop next-gen computer games to model organ development in 4D. If you are interested drop me an email: k.wabnik@upm.es
February 3, 2025 at 8:40 AM
Reposted
cbgpmadrid.bsky.social
#SeminarCBGP | 07/02/25 - 12:30h

🧑🏽‍🔬 Dr. Robertas Ursache
🌍 Centro de Investigación en Agrigenómica (CRAG)
Barcelona, Spain
📝 "The suberinterestingrole of GELP proteins”
💻 Zoom ID: 867 7606 8944 | Código acceso: 189185

#somosUPM
February 3, 2025 at 8:08 AM