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Sjon Hartman

@hartman-plantlab.com
2.2K followers 1.2K following 438 posts

Plant Biologist 🌱 Junior Professor of Plant Environmental Signalling & Development 🧬🔬 Studying Flooding Tolerance & Epigenetic Memory 🌊 at @biologyunifreiburg.bsky.social @uni-freiburg.de @cibss.bsky.social www.hartman-plantlab.com

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Reposted by Sjon Hartman
Nobel Prize @nobelprize.org · 3h
Peter Hegemann and Georg Nagel – awarded the 2026 medicine prize – discovered a remarkable protein, channelrhodopsin, in a single-celled alga. Hegemann wondered how Chlamydomonas, a single-celled alga, is able to swim towards a light source.
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Max-Planck-Gesellschaft @maxplanck.de · 09/09/2026
We are hiring! Start at a #MaxPlanckInstitute with your own independent Max Planck Research Group. This position is equivalent to a W2 Professorship at a German university, or Associate Professor internationally. 🔗Apply until October 14th! www.mpg.de/career/max-p... #ScienceCareer #MPRG #TenureTrack
Call for independent Max Planck Research Groups
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Alex Costa @labcosta.bsky.social · 04/10/2026
Too much water can be a challenge for plants, too! 🌱💧 Our new Spotlight in Molecular Plant explores how COSR channels link hypoosmotic stress to Ca²⁺ signaling. Happy to share this piece with Matteo Grenzi and Yang Zhao! doi.org/10.1016/j.mo...
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Universität Freiburg @uni-freiburg.de · 02/10/2026
🎉✨ Großer Erfolg für Freiburg: Die #unifreiburg ist wieder #Exzellenzuniversität. Ab 2027 wird sie im Rahmen der #Exzellenzstrategie von Bund und Ländern institutionell gefördert. #ufrexu26 #wirsindexzellent ➡️ Mehr dazu: ufr.link/wir-sind-exz...
Eine große Gruppe Menschen steht dicht gedrängt in einem Saal, jubelt und streckt die Arme in die Höhe. Im Vordergrund halten mehrere Personen ein großes blaues Banner mit der Aufschrift „Exzellent. universität freiburg“. Von der Decke hängen zahlreiche bunte Luftschlangen.Eine große Gruppe Menschen steht dicht gedrängt in einem Saal und jubelt mit erhobenen Armen. Im Vordergrund halten mehrere Personen ein großes blaues Banner mit der Aufschrift „universität freiburg“.Grafik mit einem Farbverlauf in Blau, Grün, Rosa und Gelb. Links steht in weißer Schrift „Welcome to the Future Research University.“ Rechts unten steht „universität freiburg“.
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James Lloyd 🧬 @jamespblloyd.bsky.social · 02/10/2026
I have a short one figure hypothesis paper that I would like to get out rapidly. But sadly @biorxivpreprint.bsky.social do not take hypothesis papers without new results. Does anyone have a suggestion for how I can get this idea out? It relates to the origins of complex multicellular life 
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Claudio Cantù @claudiocantu81.bsky.social · 01/10/2026
CUT&ID does Genomics+Proteomics in one shot via the fusion protein Lazarus Out @narjournal.bsky.social Unstoppable @annanordin.bsky.social is thinker+executor Get in touch if you wish to try it—plasmid soon @addgene.bsky.social 🙏 @liu.se @scilifelab.se @kawresearch.bsky.social @cancerfonden
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Willem van Schaik @wvschaik.bsky.social · 01/10/2026
Barbaric. Capital punishment has no place in a civilised nation.
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Plantae.org @plantaeofficial.bsky.social · 30/09/2026
Plant Science Research Weekly -- Oxygen: A hidden developmental cue in leaf morphogenesis (Science Advances) (Summary by Priyanka Babuta) buff.ly/Kh7MkHx #PlantaePSRW
buff.ly
Oxygen: A hidden developmental cue in leaf morphogenesis | Plantae
Oxygen is always considered something living forms need to survive. But wait, its role is beyond just respiration. Would you believe if I told you oxygen guides the development of young leaves?
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Reposted by Sjon Hartman
Journal of Experimental Botany @jxbotany.bsky.social · 29/09/2026
🧬 RESEARCH 🧬 Heterogeneity of ethylene receptor paralog interactions extends the ethylene response range, furthering knowledge of the emergent function of genetically redundant paralogs with low degrees of functional redundancy in fitness- Zhao et al. 🔗 doi.org/10.1093/jxb/... #PlantScience 🧪
Fig. 6.Annotated structures of ERPs in species at different evolutionary stages. The ERP structural features of the indicated species of Charophyta (A), Bryophyta (B), Pteridophyta (C), Gymnosperms (D), and Angiosperms (E). (F) A phylogeny of the species with their ERP structural features analyzed in this study. The species and accession numbers are indicated, and ERPs are not found in Cyanobacteria, Rhodophyta, and Chlorophyta species (Table 1; Supplementary Fig. S4; Supplementary Appendices S1, S2). Structures are analyzed by SMART, and the annotated domains are indicated. H, N, G1, F, and G2 denote the residues of the conserved signature motifs of the HK domain, indicated by asterisks (*). GAF, cGMP-specific phosphodiesterases, adenylyl cyclases, and FhlA.
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Sjon Hartman @hartman-plantlab.com · 27/09/2026
Happy to be in Bordeaux to start what feels like a 2-week European tour and showcase our work on flooding stress memory in #plantscience and more of our latest results! Looking forward to 3 days of RECROP, and hoping to see results that can promote climate-related stress resilience in plants.
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DOMPS @domps-ufr.bsky.social · 26/09/2026
Happy Postdoc Appreciation Week! 🎉 We are celebrating the postdocs who bring new ideas, expertise, and great energy to our DOMPS community! Next to that, let us take this opportunity to introduce our new logo. 💚🧬💙
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MwahahahahahadScientist @mads100tist.bsky.social · 25/09/2026
This is it. This is what everyone is enabling by humoring genAI: you spend months writing something that took you years to get at, for an opaque algorithm that a few control to spit a number and cut you off right there and then. This is what we're up against 🧪
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bioRxivpreprint @biorxivpreprint.bsky.social · 23/09/2026
Transcription factors read a second regulatory code in chromatin www.biorxiv.org/content/10.64898/20…
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Sebastian Samwald (Basti) he/him @samwalds.bsky.social · 23/09/2026
This has originally developed out of a thought along the lines of: "What can you do if you only manage to get weak fluorescence signals?" A short explaining thread 🧵
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bioRxiv Plant Bio @biorxiv-plants.bsky.social · 23/09/2026
A TurboID-based proximity labelling method for detecting extracellular protein interactions in plants www.biorxiv.org/content/10.64898/20…
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Sjon Hartman @hartman-plantlab.com · 22/09/2026
Congrats Ali!
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Reposted by Sjon Hartman
Ali Seleit @aliseleit.bsky.social · 22/09/2026
🐟 New preprint ! 🐟 For Hippo pathway aficionados. We generated a CRISPR/Cas9 mediated single-copy endogenous Yap1-mGreenLantern fusion protein in medaka to follow Yap1 dynamics in vivo, through embryogenesis and beyond. And it is such a beautiful line ! 🧵
biorxiv.org
Spatio-temporal visualisation and manipulation of endogenous Yap1 in medaka
A key requirement to address fundamental questions in developmental biology is the ability to visualise and manipulate endogenous signalling proteins in vivo. Here we generate such an enabling experim...
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Sjon Hartman @hartman-plantlab.com · 20/09/2026
I'll come for the after party 😉
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Reposted by Sjon Hartman
Frederica Theodoulou @freddietheodoulou.bsky.social · 20/09/2026
Looking forward to hearing the latest plant #proteostasis research next month in Strasbourg! 🌱 plantscience
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Doudna Lab @doudna-lab.bsky.social · 19/09/2026
Out now in Science: Two papers from our lab reveal VIPR, an RNA-guided DNA-targeting system in bacteriophages, providing clues to the origins of CRISPR www.science.org/doi/10.1126/... www.science.org/doi/10.1126/... Congrats to Peter Yoon, @kenjmloi.bsky.social @terryzzy.bsky.social, T.Docter & team
science.org
A noncontiguous code for RNA-guided DNA recognition at the origin of CRISPR-Cas
CRISPR-Cas provides RNA-mediated adaptive immunity, but how its first RNA-guided effector arose is unclear. In this study, we report the discovery of Viral Interference Programmable Repeat (VIPR) syst...
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Jake Harris @c-jake-harris.bsky.social · 18/09/2026
Very excited to share the new preprint from our lab on transcriptional memory and immune priming! Herculean effort from first authors Linhao and Jenia. Epigenome-engineering experiments provide evidence that H3K4me3 plays a causal role!  doi.org/10.64898/202...
doi.org
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Nature Plants @natplants.nature.com · 18/09/2026
New Correspondence: "CRISPR beyond biology: building a sustainable innovation system" rdcu.be/vPZVgFHi4Jza
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André Marques @amarques.bsky.social · 16/09/2026
Out today in Nature: sex without crossovers. Rhynchospora tenuis makes pollen, fertilises and sets seed, yet 0 crossovers in 10,997 pollen nuclei. Chromosome drive and ~87% seed abortion rebuild the mother's genotype, so the offspring are clones. doi.org/10.1038/s415...
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RDP lab @rdplab.bsky.social · 17/09/2026
🔬 New collaborative preprint ➡️ A versatile triple fluorescent marker for live imaging of plant cell membranes, nuclei and microtubules” 🌱 Work led by Magalie Uyttewaal & colleagues @ijpb-versaillescly.bsky.social 📄 doi.org/10.64898/202...
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Mary Williams @PlantTeaching @plantteaching.bsky.social · 16/09/2026
Many of you may have heard the terrible news of Dr. Meng Chen's sudden death. I just found this tribute from UC Riverside cnas.ucr.edu/news/2026/09... and a beautiful review article he contributed to @plantphys.bsky.social earlier this year, "25 years of photobodies" doi.org/10.1093/plph... 💔
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N End Rules @n-end-rules.bsky.social · 16/09/2026
We introduce a new transducer of oxygen sensing: Cys2-HYT1 @isamanrique.bsky.social @charlene-kunaka.bsky.social Susanna Ubeda Tomas & @gunjansharma88.bsky.social ma88.bsky.social lead work defining HYT1 contribution to root hypoxia tolerance. @natcomms.nature.com www.nature.com/articles/s41...
nature.com
Hierarchical regulation of oxygen-sensing through coupled transducers in Arabidopsis thaliana - Nature Communications
The PLANT CYSTEINE OXIDASE (PCO) N-degron pathway contributes to oxygen sensing in plants. Here the authors identify HYPOXIA TRANSDUCER1 (HYT1) as a substrate of PCO and show it forms a coherent feed-...
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International Society for Plant Low Oxygen Research @isplore.bsky.social · 16/09/2026
Hierarchical regulation of oxygen-sensing through coupled transducers in Arabidopsis thaliana www.nature.com/articles/s41... New #plantscience work by @isamanrique.bsky.social @charlene-kunaka.bsky.social @gunjansharma88.bsky.social @n-end-rules.bsky.social
nature.com
Hierarchical regulation of oxygen-sensing through coupled transducers in Arabidopsis thaliana - Nature Communications
The PLANT CYSTEINE OXIDASE (PCO) N-degron pathway contributes to oxygen sensing in plants. Here the authors identify HYPOXIA TRANSDUCER1 (HYT1) as a substrate of PCO and show it forms a coherent feed-...
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Reposted by Sjon Hartman
CIBSS – Centre for Integrative Biological Signalling Studies @cibss.bsky.social · 15/09/2026
CRISPR can change plants—but will it change agriculture? 🌱🧬 In a new Nature Plants Correspondence, #CIBSS researchers discuss how regulation, access, commercialisation and public trust shape the real-world impact of genome editing 🚜. 🔗Read more: rdcu.be/xuiHDM7EB5Ka
Female researcher looking at plants. Quote: "We know that CRISPR can change plants. The question is how it will change agriculture."
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Maxim Greenberg @maxvcg.bsky.social · 15/09/2026
Very happy to announce that @emboreports.org will be sponsoring a cash prize for the best poster at Ctrl+Epi+Edit ✒️🧬! Still time to register and submit an abstract (speaking slots still open also), but it's filling up, so act fast! Thanks for the support 🙏 ctrlepiedit.sciencesconf.org
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bioRxiv Plant Bio @biorxiv-plants.bsky.social · 14/09/2026
Engineering chromatin to encode transcriptional immune memory in Arabidopsis www.biorxiv.org/content/10.64898/20…
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Kasper van Gelderen @kaspervangelderen.bsky.social · 13/09/2026
The first preprint of my lab has just come out doi.org/10.64898/202... This paper came out at the same day on the sudden passing of Prof. Meng Chen. Without his work, this paper would not have existed. He was an extremely supportive member of the plant photobiology community..
doi.org
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bioRxiv Plant Bio @biorxiv-plants.bsky.social · 13/09/2026
Live confocal imagining of cellular touch responses upon local quantifiable mechanical stimulation in plant cells www.biorxiv.org/content/10.64898/20…
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Sjon Hartman @hartman-plantlab.com · 13/09/2026
www.waldwissen.net/en/forest-ec...
waldwissen.net
Brown leaves in July: a warning signal or a defence mechanism?
Brown and prematurely falling leaves are currently a common sight in many forests. Depending on the tree species, this may be either a defensive reaction to water shortage or an indication that damage...
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STARMORPH_ERC SYG @starmorph-syg.bsky.social · 09/09/2026
New STARMORPH paper by @kleinevehnlab.bsky.social www.pnas.org/doi/10.1073/...
pnas.org
SHOOT GRAVITROPISM 9 links sensory timing to the initial lateral root growth angle | PNAS
Plants strategically respond to gravity and actively set defined growth angles. These gravitropic set-point angles (GSAs) shape the width and depth...
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Mariana Schuster @marischuster.bsky.social · 07/09/2026
I'm excited to share that my newly funded #ERCStG FRONTERA is recruiting two postdoctoral researchers at @ipbhalle.bsky.social 🌱🔬 If you are passionate about plant immunity, proteolysis, membrane proteins, or proteomics, I'd love to hear from you. 🧵 Please RT/share!
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Max Planck Institute of Immunobiology and Epigenetics @mpi-ie.bsky.social · 07/09/2026
🌟 Women Shaping #STEM: Stories, Careers, Conversations 🌟 Join us for an inspiring talk by @julianeg.bsky.social, MPI-IE Group Leader, as she shares the personal story behind her career. 📅 Wed, Sept 16 | 11-12 AM 📍 Lecture Hall, MPI-IE, Freiburg Register via @cibss.bsky.social: s.gwdg.de/iMivMZ
Flyer for a seminar series titled 'Women Shaping STEM' featuring a smiling woman in a black sleeveless top against a green background and event details.
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Jake Harris @c-jake-harris.bsky.social · 27/08/2026
Enjoyed being interviewed as part of BBC radio 4's program 'Lab Grown Life' www.bbc.co.uk/sounds/play/... with big thanks to our ARIA team of course, @jamespblloyd.bsky.social @ryanlister.bsky.social Phytoform labs (including @colleendrapek.bsky.social), and Ian Paulsen & Briardo Llorente!
bbc.co.uk
Lab-Grown Life - BBC Sounds
Caroline Steel explores how synthetic biology is helping us to engineer life.
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New Phytologist @newphyt.bsky.social · 07/09/2026
The H3K27me3 reader GmLHP1 impairs Phytophthora sojae resistance by repressing ethylene precursor accumulation in soybean Fang et al. nph.onlinelibrary.wiley.com/share/FSXQ6M...
GmLHP1 negatively regulates soybean resistance to Phytophthora sojae.
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Germain Montazeaud @germtz.bsky.social · 07/09/2026
Very happy to share that the @erc.europa.eu has selected PHYTOPOGON for funding! 😁🌱 In this project, we will test whether plants have greenbeard genes — an evolutionary mechanism that could allow them to recognize the genetic identity of their neighbours.
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The EMBO Journal @embojournal.org · 07/09/2026
Loss of oxygen-sensing chromatin regulator KDM6A drives a pseudo-hyperoxic metabolic state through two pathways: via increased mitochondria synthesis, and via increased mitochondria trafficking from stromal cells to cancer cells Giovanni Tonon and collaborators link.springer.com/article/10.1...
link.springer.com
KDM6A loss enhances oxidative phosphorylation uncovering tissue-level convergent evolution - The EMBO Journal
The tumor suppressor KDM6A/UTX, a histone demethylase and a 2-oxoglutarate-dependent dioxygenase, is frequently lost in many cancer types. We show that KDM6A loss pervasively activates oxidative phosp...
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PlantEvolution 🌱🌾 @plantevolution.bsky.social · 07/09/2026
Please submit comments to the EU Commission’s Call for Evidence on how to implement the new rules for "Plants obtained by new genomic techniques (#NGT)". Submission deadline 28 Sept. Below what I submitted. #plantscience ec.europa.eu/info/law/bet... ec.europa.eu/info/law/bet...
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Sjon Hartman @hartman-plantlab.com · 03/09/2026
👏🏼 Congratulations!
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Joachim Goedhart @joachimgoedhart.bsky.social · 01/09/2026
grafify online: A web app for graphing and statistical analysis dx.plos.org/10.1371/jour... grafifyonline.shinyapps.io/grafify/
dx.plos.org
grafify online: A web app for graphing and statistical analysis
Creating accurate graphs and performing statistical analyses can be challenging for those who lack coding experience. This Community Page introduces grafify online, a free, browser-based app for generating publication-quality graphs and performing statistical tests and post-hoc comparisons.
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Stefan A. Rensing @rensingstefan.bsky.social · 01/09/2026
#Spirogyra genome paper now available @theplantcell.bsky.social @jandevries.bsky.social @watertoland.bsky.social
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Lillemeier lab @lillemeier-lab.bsky.social · 28/08/2026
We are happy to share our knockout and re-expression system for efficient analysis of mutant phenotypes in primary mouse #T-cells. Check it out! www.biorxiv.org/content/10.6...
biorxiv.org
Knockout and re-expression system for mutant analysis in primary mouse T cells
We describe here an efficient method for gene editing in mouse T cells, based on well-established, high-efficiency retroviral transduction protocols. Our platform allows analysis of mutant phenotypes ...
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Daan Weits @daanweits.bsky.social · 31/08/2026
Oxygen levels in leaves is a hot topic in @isplore.bsky.social and I'm very curious to find out how this all fits together! @djgibbs.bsky.social @drosborneplantsci.bsky.social @theplantlab.bsky.social @paolotriozzi.bsky.social pubmed.ncbi.nlm.nih.gov/40147448/ pubmed.ncbi.nlm.nih.gov/38243593/
sciencedirect.com
VRN2-PRC2 facilitates light-triggered repression of PIF signaling to coordinate growth in Arabidopsis
VERNALIZATION2 (VRN2) is a flowering plant-specific subunit of the polycomb-repressive complex 2 (PRC2), a conserved eukaryotic holoenzyme that repres…
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Daan Weits @daanweits.bsky.social · 31/08/2026
Our work, Progressive oxygenation of developing leaves directs morphogenesis, is now out in Science Advances! We found that developing leaves oxygenate from tip to base, strikingly mirroring their developmental axis, and this drives leaf dev. www.science.org/doi/10.1126/sciadv.aef2430 #plantscience
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International Society for Plant Low Oxygen Research @isplore.bsky.social · 30/08/2026
Progressive oxygenation of developing leaves directs morphogenesis Exciting #plantscience work by @daanweits.bsky.social @panicuccigabriele.bsky.social @syno2xis.bsky.social out now in Science Advances www.science.org/doi/10.1126/...
science.org
Progressive oxygenation of developing leaves directs morphogenesis
Oxygen availability underpins energy production in multicellular organisms, yet internal oxygen gradients arise in both plants and animals. Plants sense these variations via the plant cysteine oxidase...
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Sjon Hartman @hartman-plantlab.com · 29/08/2026
Thanks Mary 🙌🏼
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Sjon Hartman @hartman-plantlab.com · 28/08/2026
Tenure documents submitted 🤞🏼 After work drinks and snacks with the lab to celebrate 🥂
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