@FrimlLab

Developmental and Cell Biology of Plants @ISTAustria

 Klosterneuburg, Austria
ist.ac.at/en/research/friml-group/
Joined December 2022
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Fantastic to see our great Phd students Nada and Dmitrii , together with postdoc Shubh, competing in the scientific image competition during the @ISTAustria Open Campus Day!
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🚨 New preprint by @Cate_Giannini🚨 We uncover an unexpected link between auxin signalling, transcription, and autophagy — revealing how plants coordinate gene expression and cytoplasmic renewal to drive developmental reprogramming. 🌱✨ biorxiv.org/content/10.1101/…
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In auxin maxima, autophagy lights up — and in autophagy-deficient mutants, differentiation slows down. Auxin doesn’t just tell cells who to become — it helps them clear the decks to become something new.
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Our study reveals a dual role for auxin: coordinating gene expression and cytoplasmic remodeling via autophagy — ensuring fast, efficient developmental reprogramming. Auxin doesn’t just permit change. It enables it. 💫
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Now online: A tandem of two papers showing TMK regulation of PIN-dependent auxin transport cell.com/cell/fulltext/S0092… (PIN2, Friml lab) and cell.com/developmental-cell/… (PIN1, Xu lab)
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For those that want to learn more about auxin, I am proud to present our latest review Mechanisms of auxin action in plant growth and development. pubmed.ncbi.nlm.nih.gov/4038… @FrimlLab @horticell

Mechanisms of auxin action in plant growth and development - PubMed

The phytohormone auxin is a major signal coordinating growth and development in plants. The variety of its effects arises from its ability to form local auxin maxima and gradients within tissues,...

pubmed.ncbi.nlm.nih.gov
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Big celebrations for our new Doctor Huihuang Chen! Congratulations and cheers to your bright future!
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We look forward to seeing you in Palermo!!
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Friml Lab retweeted
FWF@FWF_at21 Mar 2025
Pflanzen üben auf den Biologen & Wittgenstein-Preisträger Jiří Friml eine besondere Faszination aus. Er hat die Funktion des Hormons #Auxin als Vermittler zw. Umgebung und Zellkommunikation in #Pflanzen entdeckt. @ISTAustria🌿 Video-Porträt Jiří Friml ▶️ scilog.fwf.ac.at/magazin/pfl…

Wittgenstein-Preisträger Jiri Friml entdeckte wichtigen Signalweg in Pflanzen

Pflanzen üben auf den Biologen und Wittgenstein-Preisträger Jiří Friml eine besondere Faszination aus. Den Wissenschaftler interessiert die Frage, wie Pflanzen ihre Überlebensmechanismen entwickelt...

scilog.fwf.ac.at
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FREE to Join | MPlant Virtual Seminar | Shifting Paradigms in Auxin Signalling | March 27, 2025 9:00-10:00 (UTC+1, Austria) | March 27, 2025 16:00-17:00 (China) | Zoom Meeting ID: 856 4424 9945 Passcode: 123789 | Welcome to join! us06web.zoom.us/j/8564424994…
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Replying to @kat_kurtovic
@kat_kurtovic in our New Phytol: auxin has effect on regeneration in Chara braunii, at least one its PIN is PM localized with auxin-transporting activity and distribution correlated to acid bands in Chara cells. IAA application induces MAPKs within minutes nph.onlinelibrary.wiley.com/…
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Congratulations on your brilliant defense Aline! All the best for your future endeavours! Thanks to all the committee! Check out Aline's work on TMK1 interactors @biorxiv_plants doi.org/10.1101/2025.02.28.6…
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New edge to canonical auxin signalling – cAMP acts as second messenger - now on @nature nature.com/articles/s41586-0…
ISTAustria@ISTAustria5 Mar 2025
New paper by the @FrimlLab, Huihuang Chen @ISTAustria and more out in @Nature revise our knowledge about the auxin signaling mechanism in plants.
Huihuang Chen picks up a growth chamber containing Arabidopsis thaliana. Once Arabidopsis thaliana seedlings develop into small plants, they thrive in temperatures of 20-22 °C with adequate light. © ISTA

ALT Huihuang Chen picks up a growth chamber containing Arabidopsis thaliana. Once Arabidopsis thaliana seedlings develop into small plants, they thrive in temperatures of 20-22 °C with adequate light. © ISTA

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🚅Advance Access: How polarized tissue repair is achieved upon excision? Using a bryophyte Physcomitrium patens, Han Tang et al. revealed that the proper polarization of PIN-FORMED #auxin exporter is a key process🔑 doi.org/10.1093/pcp/pcaf008 #cellreprogramming #plantsci
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BREAKTHROUGH REPORT: Super-resolution expansion microscopy in plant roots (Michelle Gallei, Sven Truckenbrodt, Caroline Kreuzinger, et. al.) doi.org/10.1093/plcell/koaf0… @ASPB #PlantSci
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Another day, another preprint from our lab! Congrats to @kulich_ivan and colleagues: here is the news on ROS burst regulation. Now on @biorxiv_plants biorxiv.org/content/10.1101/…

Calcium-triggered apoplastic ROS bursts balance gravity and mechanical signals to navigate soil

Reactive oxygen species (ROS) have been implicated repeatedly in multiple signaling processes in plants but the underlying mechanisms and roles remain enigmatic. Here, we developed live imaging of...

biorxiv.org
Ivan Kulich@kulich_ivan9 Jan 2025
ROS bursts after auxin, RALF, eATP or mechanical bending? We monitored them all. What triggers them and what are they good for? Many surprises! Read our new preprint, a second one in a row. Thanks ISTA and Biology Centre CAS for amazing environment. biorxiv.org/content/10.1101/…
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New year, new preprint from @kulich_ivan : AROs as key plant-specific players in plant CNGC function and Ca2+ signaling biorxiv.org/content/10.1101/…

Armadillo Repeat Only Proteins Are Crucial for the Function of Plant CNGC Channels

Plant cells respond to a wide range of stimuli through intracellular calcium (Ca2+) signaling. Cyclic nucleotide-gated channels (CNGCs) are a major class of plant Ca2+ channels, with 20 homologs in...

biorxiv.org
Ivan Kulich@kulich_ivan8 Jan 2025
Armadillo Repeat Only proteins enable function of multiple, if not all CNGC channels. These are essential for plethoha of calcium signals triggered by stresses, hormones and pathogens. Read our new perprint. biorxiv.org/content/10.1101/…
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