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Thomas WIDIEZ

@thomaswidiez.bsky.social
420 followers 548 following 40 posts

🌾Plant biologist, plant reproduction, seeds, pollen, haploid induction, maize🌽. PI at lab @rdplab.bsky.social in ENS de lyon @ensdelyon.bsky.social / research director at @inrae-france.bsky.social

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Reposted by Thomas WIDIEZ
International Association of Sexual Plant Reproduction Research @iasprr.bsky.social · 26/09/2026
Central cell–produced salvagers promote fertilization recovery and interspecific hybridization | PNAS www.pnas.org/doi/10.1073/...
pnas.org
Central cell–produced salvagers promote fertilization recovery and interspecific hybridization | PNAS
Angiosperms face frequent fertilization failure in natural environments. To address this challenge, angiosperms have evolved fertilization recovery...
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Reposted by Thomas WIDIEZ
RDP lab @rdplab.bsky.social · 19/09/2026
🎓 Congratulations to Laëtitia DE FARIA on her brilliant PhD defense! 🌱 Great work on epigenetics and male fertility, under Daniel Bouyer’s supervision. 👏 Thanks to the jury: Pauline Jullien, @pierrebaduel.bsky.social, @arabette.bsky.social, @leandroquadrana.bsky.social & @thomaswidiez.bsky.social
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RDP lab @rdplab.bsky.social · 12/09/2026
⚠️New work from the RDP institute ⚠️ ➡️ Ingram and Zipfel teams reveal how embryo-derived signals help coordinate seed development. 📖 An embryo-derived peptide signal directs endosperm polarity in Arabidopsis Out at Science: www.science.org/doi/10.1126/...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 11/09/2026
Honored to receive this award. Thank you to this amazing plant reproduction community🙏 Science is a collective effort, so I’m grateful to everyone I have the privilege to work with, and my collaborators. A special thought for my “maize” 🌽 mentor, Peter Rogowsky, whose guidance still inspires me.
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Thomas WIDIEZ @thomaswidiez.bsky.social · 05/09/2026
Opening of the #ICSPR2026 conference in 成都 (Chengdu) ! www.icspr2026.com/En/Default Looking forward discussing science 🧪!
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Charlotte Kirchhelle @ckirchhelle.bsky.social · 29/07/2026
Our latest for your summer reading list: how do plants control growth at the organ surface? So proud of @zoenv.bsky.social's magnum opus and grateful to all the other authors, including Annamaria Kiss, @nathan-german.bsky.social, and @moritznowack.bsky.social! www.cell.com/current-biol...
cell.com
Plant cells at the organ surface use mechanical cues to activate a specific growth-control program
Nemec-Venza et al. show how mechanical signals, such as tissue tension, can activate gene expression in epidermal cells at the surface of Arabidopsis roots. The expression of the edge-specific growth ...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 18/06/2026
The pre-print week 😅!.. Second MS now on BioRxiv ▶️ genome editing of KOKOPELLI confers haploid induction capacity in not one, but TWO crops: 🌽 maize & 🍅 tomato 📖 doi.org/10.64898/202... Huge thanks to everyone involved and our collaborators: @nathaliegonzalez.bsky.social, @inrae-bfp.bsky.social
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Reposted by Thomas WIDIEZ
Frank Hochholdinger @hochholdingerf.bsky.social · 17/06/2026
🇫🇷🇩🇪🌽🇫🇷🇩🇪🌽🇫🇷🇩🇪🌽🇫🇷🇩🇪🌽 Registration for the 3rd French-German Maize Breeders‘ School on Nov 3 & 4 @unibonn.bsky.social is now open: www.maiskomitee.de/presse-medie... 🇫🇷🇩🇪🌽🇫🇷🇩🇪🌽🇫🇷🇩🇪🌽🇫🇷🇩🇪🌽 Registration fee: Regular 160.- € Postdocs 80.- € PhD students 40.- €
maiskomitee.de
3rd French-German Maize Breeders School
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Thomas WIDIEZ @thomaswidiez.bsky.social · 17/06/2026
Happy to share our protocol for imaging double fertilization in maize! 🌽🔬 📖 www.biorxiv.org/content/10.6... We hope this resource will be useful for researchers studying plant reproduction, fertilization, and early seed development.
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Thomas WIDIEZ @thomaswidiez.bsky.social · 27/05/2026
🌾 Doubled haploid technology now works in sorghum! 🌱 Genome editing applied to MATL/PLA1/NLD, and DMP genes (but PLD3 didn’t induce haploid) 📖 doi.org/10.1126/scia... out @ ScienceAdvanes
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Reposted by Thomas WIDIEZ
Nature Plants @natplants.nature.com · 22/05/2026
New OA Resource: "A transcriptional atlas of early Arabidopsis seed development suggests mechanisms for inter-tissue coordination" rdcu.be/fj8H2 Single-nucleus RNAseq profiling of early Arabidopsis seed development. #PlantScience
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Reposted by Thomas WIDIEZ
Frank Hochholdinger @hochholdingerf.bsky.social · 20/05/2026
The final version of our review on cereal root system genetics and domestication has now been published: www.annualreviews.org/content/jour...
annualreviews.org
The Genetic Basis and Domestication of Root System Architecture in Cereals
Cereal root systems are critical for nutrient and water uptake as well as for anchorage and thus for plant productivity. This review synthesizes the current understanding of the morphological and cell...
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Reposted by Thomas WIDIEZ
Charlotte Kirchhelle @ckirchhelle.bsky.social · 15/05/2026
Incredibly proud of this paper showing how plants couple vesicle delivery and phragmoplast expansion during division. This project started in the lab of the great and late Ian Moore, and it was a joy to finish it with @liamelliottplants.bsky.social et al! link.springer.com/article/10.1...
link.springer.com
A Rab/Kinesin-12/kinase module couples vesicle delivery and phragmoplast dynamics during plant cell cytokinesis - The EMBO Journal
Cytokinesis is a key process in the development of multicellular organisms, through both formative and proliferative divisions. In land plants, successful cytokinesis requires precise targeting of Gol...
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Reposted by Thomas WIDIEZ
International Association of Sexual Plant Reproduction Research @iasprr.bsky.social · 13/05/2026
GEX3 interacts with GEX2 to function in gamete attachment and plasma membrane fusion in Arabidopsis - ScienceDirect share.google/l3YtChgryJmj...
share.google
GEX3 interacts with GEX2 to function in gamete attachment and plasma membrane fusion in Arabidopsis
In angiosperms, male-female gamete interaction leads to double fertilization, yet the molecular mechanisms governing gamete interaction remain poorly …
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Reposted by Thomas WIDIEZ
Schnittger Lab @schnittger-lab.bsky.social · 06/05/2026
Finally, here it is: after 12 years, and driven by the incredible hard work and innovation of two Ph.D. students, Bingyan Hu and Maria Prusicki, with biomathematical support from Katarina Stahlmann (UKE) — "A cytological framework of female meiosis in Arabidopsis". academic.oup.com/plcell/artic...
academic.oup.com
A cytological framework of female meiosis in Arabidopsis
Live-cell imaging reveals characteristic cytological stages of female meiosis in Arabidopsis and allows an assessment of their durations.
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Thomas WIDIEZ @thomaswidiez.bsky.social · 04/05/2026
🌽 Save the date! Join us in Lyon, France for the 7th European Maize Meeting 📅 June 9–11, 2027 More details coming soon — stay tuned! Please share with colleagues and networks interested.
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Reposted by Thomas WIDIEZ
Marina Millán Blánquez @blanquezmarina.bsky.social · 21/04/2026
It's been great to virtually host Alex Eve @amjeve.uk, from the Company of Biologists @biologists.bsky.social today at the RDP @rdplab.bsky.social for a wonderful webinar on scientific publishing and the different forms we scientists have to contribute to a fairer system 📣
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Reposted by Thomas WIDIEZ
Thomas Ott @ottlab.bsky.social · 13/04/2026
New pre-print from the lab! We show that the subtilase SBT12a is essential for symbiosome stabilization in Medicago. Using HUNTER proteomics, we even got some of its substrates. Have a look. www.biorxiv.org/content/10.6...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 30/03/2026
Multifaceted roles of MTL/NLD/PLA1 in plant reproduction: In addition of inducing haploid embryos, loss of OsMTL function in rice 🌾 could lead to triploid embryo formation !! @newphyt.bsky.social ▶️ doi.org/10.1111/nph....
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Thomas WIDIEZ @thomaswidiez.bsky.social · 16/03/2026
Great discussions today with @daanweits.bsky.social who visited our @rdplab.bsky.social in Lyon, France. Plenty of fresh ideas on plant oxygen sensing, the room definitely had good O₂ levels! 🌱🫧
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Reposted by Thomas WIDIEZ
Thomas Ott @ottlab.bsky.social · 08/03/2026
Happy to share our latest work in collaboration with the lab of @pengbo10.bsky.social. Here, we describe that a formin protein mediates the polarity switch from root hair to infection thread growth during symbiotic interactions. www.science.org/doi/10.1126/...
science.org
Nanodomain-localized formin gates symbiotic microbial entry in legume and solanaceous plants
Colonization of plant roots by symbionts requires substantial morphodynamic reorganization. Examples are actin-scaffolded microcompartments called infection pockets formed during root nodule symbiosis...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 09/03/2026
Great to see that our initial haploid induction discovery in Arabidopsis ( @plantphys.bsky.social : doi.org/10.1093/plph... ) translated into a legume🫛 ▶️ In Vivo Maternal Haploid Induction by Disrupting KOKOPELLI in Medicago 📖 onlinelibrary.wiley.com/doi/10.1111/... @plantbiotechj.bsky.social
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Reposted by Thomas WIDIEZ
Development @dev-journal.bsky.social · 02/03/2026
In this Primer, @eugeniapitsili.bsky.social and @moritznowack.bsky.social discuss the cellular and molecular frameworks governing the initiation and execution of programmed cell death in plants: doi.org/10.1242/dev....
Overview of dPCD processes during plant life cycle. Instances of dPCD (developmental programmed cell death; skull and crossbones) occurring during vegetative (A-D) and reproductive (F,E) plant development, and senescence (G). (A) In vegetative tissues, dPCD occurs during xylem differentiation, which progresses sequentially through stages of (i) cell specification, (ii) secondary cell wall deposition and lignification, and (iii) cell death and protoplast clearance. (B) Root cap turnover in Arabidopsis. The lateral root cap (LRC) and columella are indicated in purple and brown, respectively. (C) Leaf perforation in some taxa. (D) Lysigenous aerenchyma formation. (E) dPCD is involved in reproductive development in the fully grown plant. During sexual reproduction (i), dPCD occurs in nurturing layers such as the anther, tapetum and ovule nucellus, during anthesis, during functional megaspore (FM) selection and in antipodal cells of some species. During pollination and fertilization (ii), it occurs as part of the self-incompatibility response in some taxa, in the transmitting tract, and in the pollen tube and synergid cells to facilitate fertilization. (F) During seed development, dPCD occurs: (i) in the suspensor; (ii) in the embryo-surrounding endosperm, or the endosperm-adjacent-to-scutellum (EAS) region; and (iii) during seed coat formation and in the aleurone layer during germination. DAP, days after pollination. (G) dPCD is the terminal phase of senescence. Created in BioRender. Pitsili, E. (2026) https://BioRender.com/uo9f4fn. Republished with permission.
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Thomas WIDIEZ @thomaswidiez.bsky.social · 28/02/2026
The 🌽maize🌽 crew from @rdplab.bsky.social representing at the Maize Genetics Meeting in Köln 🇩🇪 Great discussions, inspiring science & valuable time with the international maize community. Proud of this team and the contributions we’re making to advance maize reproduction 🌱
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Thomas WIDIEZ @thomaswidiez.bsky.social · 25/02/2026
Happy to share our 🌽 work: ZmSWEET mediate sucrose transport at the 🌽maize endosperm–embryo interface and are required for proper carbon partitioning, embryo growth, and seed vigor. 📖 tinyurl.com/5n8dc6p4 Great collaboration with @leibnizipk.bsky.social, @lacombeb.bsky.social et al.
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Reposted by Thomas WIDIEZ
RDP lab @rdplab.bsky.social · 10/02/2026
Two days of retreat and amazing discussions with @cosheidelberg.bsky.social ; @igflyon.bsky.social ky.social & @rdplab.bsky.social The power of science really shows when different organisms (and minds!) come together.
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RDP lab @rdplab.bsky.social · 22/01/2026
Ahead of Clara Igisch’s PhD defense tomorrow, we enjoyed four excellent talks today in a 🌱 mini-symposium: @emmanuellebayer.bsky.social / @ottlab.bsky.social / @jennyrussinova.bsky.social & @structplantbio.bsky.social Great science, great stories!
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Nature Plants @natplants.nature.com · 21/01/2026
New Article: "ATG5–HSP90.2-mediated micromitophagy as a cytological basis for maternal inheritance of plant mitochondria" rdcu.be/eZ87l Micromitophagy in male germline cells underpins paternal mitochondrial elimination and supports the zygote-to-embryo transition.
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Michael Raissig @michaelraissig.bsky.social · 13/01/2026
Save the date: Plant Development PhD school (i.e. Retzbach 2.0) in Neustadt, Germany. Sept 23rd-25th, 2026 ~€350 all inclusive Excellent speakers and a relaxed atmosphere for early-career researchers (PhDs & postdocs). Registration opens soon. For more info, see raissiglab.org/plantdevosch...
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RDP lab @rdplab.bsky.social · 14/01/2026
🌟 Great seminar this week at RDP lab with Artemis Perraki ( @cnrsbiologie.bsky.social , @lrsv-toulouse.bsky.social) sharing her exciting science to understand how developmental and environmental pathways intersect during anther development 🌱
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RDP lab @rdplab.bsky.social · 19/12/2025
🔥 Hot new preprint before the Christmas break 🎄 Egg cell fertilization–dependent peptide receptor signaling mediates endosperm polarity 📖 www.biorxiv.org/content/10.6... Audrey Creff, @jackrhodes.bsky.social , Cyril Zipfel, Gwyneth Ingram and others
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RDP lab @rdplab.bsky.social · 15/12/2025
Today, our Director, Gwyneth Ingram, received the CNRS Silver Medal. (👇see the post below👇) This award recognizes researchers for the originality, quality, and significance of their work, acknowledged at both national and international levels. 🌱Congratulations!🥂
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Journal of Experimental Botany @jxbotany.bsky.social · 13/12/2025
🧬🌽 RESEARCH 🧬🌽 A new whole-genome assembly of maize identifies a potential regulator of crossover frequency and other effects on expression of A-chromosome genes mediated by the B chromosome - Hloušková et al. 🔗 doi.org/10.1093/jxb/... #PlantScience 🧪
Fig. 1 (shortened, full legend in paper): Constructing a new reference sequence of the maize B chromosome. (A) Schematical illustration of the steps towards generation of the new reference sequence of the maize B chromosome. Green stars indicate the use of Oxford Nanopore long reads and yellow stars the use of short reads from Illumina sequencing in particular steps. (B) High-throughput chromatin conformation capture (Hi-C) contact map of the final B chromosome pseudomolecule. The intensity of the red colour corresponds to the frequency of contacts between two particular chromosomal regions in the 3D organization of the chromatin in the nucleus; both axes represent the same pseudomolecule of the B chromosome generated in this study.
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Weibing Yang @weibingyang.bsky.social · 06/12/2025
Thrilled to have our paper out in @science.org. Cell division guides plant cell wall formation. Does the reverse hold? We show that bimodal pectin methylesterification, via PME5 mRNA nuclear sequestration, influences plant cell division and cell plate orientation. www.science.org/doi/10.1126/...
science.org
Cell wall patterning regulates plant stem cell dynamics
The plant cell wall regulates development through spatiotemporal modulation of its chemical and mechanical properties. Pectin methylesterification is recognized as a rheological switch controlling wal...
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RDP lab @rdplab.bsky.social · 30/11/2025
Reinforcing the 🇫🇷France–Japan🇯🇵 collaboration in plant biology🌱 Great meeting our French and Japanese colleagues in a cozy pre-Christmas atmosphere in Strasbourg, hosted by @ibmp-cnrs.bsky.social So glad to have brilliant Japanese researchers at @rdplab.bsky.social Let’s grow science together! 🌱✨
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Thomas WIDIEZ @thomaswidiez.bsky.social · 28/11/2025
🌾 Shorten the wheat gene-edited breeding cycle ✨ Haploid induction × gene editing ▶️Rapid Genetic Stabilisation of Transgenic and Edited Wheat Through Transformation of Immature Haploid Embryos 📖 doi.org/10.1111/pbi....
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RDP lab @rdplab.bsky.social · 16/11/2025
Congrats to Andrea Calhau from @rdplab.bsky.social for winning the Best Talk Award at "Seed 2025", the 10ᵉ edition of the French Seed Network Conference! 🌱 This year’s colloque, held in Nantes, brought together scientists around the theme Seeds & the agroecological, climatic, and food transitions.
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Laurens Pauwels @laurenspauwels.bsky.social · 29/10/2025
🌱 Our latest: in Plant Biotech J we study transgenerational #CRISPR editing in #maize🌽 using a split Cas9/gRNA system, highlighting importance of event quality & choice of promoters. 👏 Christian Lorenzo, Dirk Inzé and Hilde Nelissen @fbwugent.bsky.social @psb-vib.bsky.social doi.org/10.1111/pbi....
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Thomas WIDIEZ @thomaswidiez.bsky.social · 06/10/2025
🌽 Maize vs. Fusarium 🌽 Overexpressing a maize lipoxygenase (ZmLOX4) boosts resistance to Fusarium infection. Glad that our maize Gene editing & transformation platform, at @rdplab.bsky.social, contributed to this research, led by the Lanubile's Lab. ▶️ doi.org/10.1093/jxb/...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 06/10/2025
The cenH3 assembly factor ZmKNL2 boosts haploid induction in maize 🌽 onlinelibrary.wiley.com/doi/10.1111/...
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RDP lab @rdplab.bsky.social · 13/09/2025
🌱 3 plant biology institutes, 2 great days! 🌿 PhDs & postdocs from DBMV @unil.bsky.social, @psb-vib.bsky.social & @rdplab.bsky.social rocked the 2nd Trilateral Plant Bio Symposium in Lausanne! 👏 Big congrats to all ECRs, especially to @nathan-german.bsky.social for winning Best Presentation! 🏆💥
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Thomas WIDIEZ @thomaswidiez.bsky.social · 09/09/2025
🚨Breakthrough in haploid induction through microspore 🌾 🌱 @cp-cell.bsky.social ▶️ Reprogramming of microspore fate via BBM-BAR1 for highly efficient in vivo haploid induction 📖 www.cell.com/cell/abstrac...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 12/08/2025
➡️NRT1.1B acts as an ABA receptor in integrating compound environmental cues for plants @cellcellpress.bsky.social 📖https://doi.org/10.1016/j.cell.2025.07.027
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Jeffrey Ross-Ibarra @jrossibarra.bsky.social · 11/08/2025
Our paper showing that variation in transcription factor binding sites underlies the majority of additive genetic variance for phenotypic variation in maize is finally out! Sadly they didn't use our suggested cover image below (made by the inimitable Andi Kur). www.nature.com/articles/s41...
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Plantae.org @plantaeofficial.bsky.social · 22/07/2025
Plant Science Research Weekly -- Unusual cell death pathway in maize endosperm (Plant Cell) @moritznowack.bsky.social @thomaswidiez.bsky.social @laurenspauwels.bsky.social @bertderybel.bsky.social (Summary by Mary Williams @PlantTeaching.bsky.social) buff.ly/A3RVH6Q #PlantaePSRW
buff.ly
Unusual cell death pathway in maize endosperm | Plantae
An interesting new study by Doll et al. addresses one of the most complex and important plant developmental processes, that of seed formation, with a focus on maize. Like other seeds…
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Centre INRAE Lyon-Grenoble Auvergne-Rhône-Alpes @inrae-lyon-gre.bsky.social · 18/07/2025
🌽 Le suicide utile de l’albumen : des cellules se détruisent pour laisser grandir l’embryon Publié dans The Plant Cell, découverte signée N. Doll & @thomaswidiez.bsky.social (UMR RDP), un mécanisme clé pour la croissance et la nutrition des graines ⤵️ urlr.me/QvBTSV Des pistes pour l’#agriculture 🚜
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Thomas WIDIEZ @thomaswidiez.bsky.social · 10/07/2025
A haplotype-resolved pangenome of the barley wild relative Hordeum bulbosum 🌾 @nature.com 📖 www.nature.com/articles/s41...
nature.com
A haplotype-resolved pangenome of the barley wild relative Hordeum bulbosum - Nature
A study describes the assembly and analysis of a haplotype-resolved pangenome of bulbous barley with the potential to improve domesticated barley and illustrates its use in evolutionary research and t...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 03/07/2025
Amazing discovery 🤯 on barrier integrity control in 🌱 👇🏼👇🏼 @nature.com Congratulations to all👏🏼
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Thomas WIDIEZ @thomaswidiez.bsky.social · 22/06/2025
🌽 A dream maize seed phenotype—finally real❗ Two KIL TFs trigger lytic cell death in endosperm (EAS) ➡️ boosting embryo growth! @theplantcell.bsky.social‬ Huge credit to @moritznowack.bsky.social & N. Doll for leading this work 🙌 Fantastic collaboration 🤝 📖 academic.oup.com/plcell/advan...
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Thomas WIDIEZ @thomaswidiez.bsky.social · 19/06/2025
🌱 Latest research from A. Lanubile Lab ▶️ editing the ZmWKRY125 transcription factor enhances maize resistance against Fusarium verticillioides🌽 Glad that our team from @rdplab.bsky.social contributed to this work! 🤝 🔓open access: hal.science/hal-05119616 📖 publisher's link doi.org/10.1007/s002...
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