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Loic Lepiniec

@lepiniec.bsky.social

#PlantScience, #Research, #Formation and #Innovation, @UnivParisSaclay, @INRAE, @ijpb_fr, Head @SPS_Plant_Sci, Consult. Pr. @AgroParisTech, @AcademieAgri, https://linktr.ee/loic_lepiniec

853 Followers  |  303 Following  |  37 Posts  |  Joined: 03.10.2024  |  2.1688

Latest posts by lepiniec.bsky.social on Bluesky

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14èmes journées annuelles de formation (JST2025) du Réseau des Microscopistes INRAE (RµI) - 5-7 novembre 2025 à Versailles Plus d'informations sur le site de l'évènement   -> Contact : alice.vayssieres@inrae.fr

14èmes journées annuelles de formation (JST2025) du Réseau des Microscopistes INRAE (RµI) - 5-7 novembre 2025 à Versailles

10.09.2025 06:43 — 👍 4    🔁 2    💬 0    📌 0
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Antimicrobial Peptides as Part of the Arsenal of Constitutive and Inducible Seed Defences in Tomato Seed Exudates Against Pathogens  Antimicrobial Peptides as Part of the Arsenal of Constitutive and Inducible Seed Defences in Tomato Seed Exudates Against Pathogens 

Antimicrobial Peptides as Part of the Arsenal of Constitutive and Inducible Seed Defences in Tomato Seed Exudates Against Pathogens
https://bsppjournals.onlinelibrary.wiley.com/doi/10.1111/mpp.70164

29.10.2025 13:34 — 👍 0    🔁 0    💬 0    📌 0
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Plant ETP and EPSO: ETP Strategic Research and Innovation Agenda 2025-2034 published - EPSO This SRIA outlines a vision to strengthen the EU’s agri-food systems by focusing on three key pillars: Target – Content of R&I: Scientific priorities to enhance plant resilience, productivity, nutriti...

Plant ETP Strategic Research&Innovation Agenda 2025–34 published to guide European R&I in plant biology and breeding from fundamental research to crop production & distribution. Plant ETP & EPSO offer to collaborate with policy makers to implement it. bit.ly/473p166 #PlantScience #EUCompetitiveness

02.10.2025 09:56 — 👍 1    🔁 1    💬 0    📌 0
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Les champignons, les bons🍄‍🟫🍺🥖, les brutes 🍄🍄‍🟫 et les truands 🍄‍🟫☘️c’est ce week-end ! @inrae-bioger.bsky.social @spsplantsciences.bsky.social #Phytopathologie mais aussi
#InteractionsMicrobiennes
#MetabolitesSpecialisés #ANR-FRiPPon

02.10.2025 16:59 — 👍 12    🔁 5    💬 0    📌 0

🗓️ Prolongation !
L'appel à candidature pour le comité d'expertise scientifique des futures presses de l'Université Paris-Saclay est prolongé jusqu'au 10/10/2025.

29.09.2025 09:00 — 👍 3    🔁 4    💬 0    📌 0
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Flavonoid characterization: It takes more than Arabidopsis seed colours! | "Revisiting Key Research Published in Planta's First 100 Years" "Flavonoid metabolites dye many plant organs such as flowers, fruits, seeds, leaves or tubers. Over the past 150 years, tracking flavonoid-related colour changes in plants has shaped the foundation of many modern biology questions. This includes ground-breaking discoveries such as Gregor Mendel’s law of inheritance (using white and purple pea flowers), Barbara McClintock’s identification of transposable elements (through her research on variably coloured maize kernels) or Carolyn Napoli’s description of co-suppression (based on her observations of altered and novel flower colouration in petunia). In recent decades, the intricate, diverse and finely tuned flavonoid pathway has been unravelled and the understanding of this pathway across various plant species owes much to the characterization of mutants disrupted in the biosynthesis, transport and storage of flavonoids that similarly displayed modified flower and seed pigmentation (Winkel-Shirley 2001; Koes et al. 2005; Lepiniec et al. 2006). The model plant A. thaliana provided a wealth of such mutants (transparent testa mutants, tt) exhibiting altered seedcoat colours (Fig. 1) (Koornneef 1990; Shirley et al. 1992; Lepiniec et al. 2006). Their characterization enabled researchers to associate genes or loci with flavonoid-related functions. However, although their visual and non-lethal phenotypes were easy to identify and offered insight into the disrupted gene functions, further investigation was required to confirm these functions. Beyond colour, to fully unravel this pathway, it has become essential to individually characterize the seed flavonoids, determine their spatial and temporal distribution, and their diversity. This laid the groundwork for validating locus functions, characterizing novel gene roles, and identifying as well as quantifying flavonoid accumulation in other plants".

Flavonoid characterization: It takes more than Arabidopsis seed colours!
We are delighted to be part of this collection celebrating Planta Centennial: "Revisiting Key Research Published in Planta's First 100 Years"

30.09.2025 12:41 — 👍 0    🔁 0    💬 0    📌 0
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IJPB Symposium 2026 - Chemical interactions between plants and their environment: from the molecule to the field - Save the date 23-25 of September.. Chemical interactions between plants and their environment: from the molecule to the field 23-25 September 2026 - IJPB, INRAE Ile-de-France - Versailles-Saclay The IJPB is organising the 3rd edition of its international symposium. Following the editions in 2018 and 2024, this event will take place in Versailles from 23 to 25 September 2026. Save the date! The IJPB Symposium 2026 is dedicated to "Chemical interactions between plants and their environment: from the molecule to the field", a booming research field in which IJPB develops integrative approaches bridging plant metabolism and its effect on biotic/abiotic interactions and vice versa. The symposium will comprise an opening lecture and four thematic sessions, each involving an international and an IJPB keynote speaker, as well as presentations from participants selected from submitted abstracts. The themes of each session are as follows: 1 - Identification/analysis of chemical signals involved in plant response to their environment  2 - Molecular and cellular mechanisms of chemical responses to biotic and abiotic stress: Perception and transduction of chemical signals 3 - Integration of chemical interactions in ecological communities and agroecosystems  4 - Agroecological innovations derived from the study of how plants interact with their environment This exciting meeting aims to foster collaborations and facilitate knowledge exchange among participants by bringing together renowned specialists in the field and a high level of interdisciplinary. The symposium will also feature a workshop on plant specialized metabolite analysis, conducted in collaboration with the Chemistry/Metabolism platform PO-Chem, and a tour of the Plant Facilities PO-Plants and the Phenoscope PO-Pheno, all three of which are part of the Plant Observatory (PO) of the IJPB. Ahead of the symposium, the ENVIE Network will hold its 5th plenary edition in Versailles from 21 to 23 September 2026, organised as part of a MULTISTRESS satellite workshop. We look forward to meeting you in Versailles! Further information will be available by November 2025. In connection with the research developed at the Institute Jean-Pierre Bourgin for Plant Sciences.

IJPB Symposium 2026 - Chemical interactions between plants and their environment: from the molecule to the field - Save the date 23-25 of September..

30.09.2025 08:44 — 👍 1    🔁 1    💬 0    📌 0
Post image 27.09.2025 19:14 — 👍 0    🔁 1    💬 0    📌 0
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Time-resolved reprogramming of single somatic cells into totipotent states during plant regeneration, https://www.cell.com/cell/fulltext/S0092-8674(25)01020-7 • LEC2 reprograms somatic epidermal cells into totipotent somatic embryo founder cells • LEC2 and SPCH co-activate local auxin biosynthesis by targeting TAA1 and YUC4 • GMC-auxin state marks stomatal cells shifting from differentiation to totipotency • Transcriptional rewiring and auxin signaling drive reprogramming of stomatal cells

Time-resolved reprogramming of single somatic cells into totipotent states during plant regeneration,
 https://www.cell.com/cell/fulltext/S0092-8674(25)01020-7

20.09.2025 08:36 — 👍 11    🔁 9    💬 0    📌 0
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A host organelle integrates stolen chloroplasts for animal photosynthesis 

A host organelle integrates stolen chloroplasts for animal photosynthesis

19.09.2025 16:05 — 👍 2    🔁 2    💬 0    📌 0
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NRT1.1B acts as an abscisic acid receptor in integrating compound environmental cues for plants   "ABA response is tightly modulated by nitrogen nutrition   NRT1.1B acts as a dual receptor to competitively bind ABA and nitrate   NRT1.1B-SPX4-NLP4 cascade underlies ABA signaling from the plasma membrane to the nucleus   NRT1.1B integrates compound environmental cues across different species in plants"

NRT1.1B acts as an abscisic acid receptor in integrating compound environmental cues for plants

19.09.2025 15:59 — 👍 5    🔁 1    💬 0    📌 0
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Ancient hybridization underlies tuberization and radiation of the potato lineage "Interspecific hybridization may trigger species radiation by creating allele combinations and traits. Cultivated potato and its 107 wild relatives from the Petota lineage all share the distinctive trait of underground tubers, but the underlying mechanisms for tuberization and its relationship to extensive species diversification remain unclear. Through analyses of 128 genomes, including 88 haplotype-resolved genomes, we revealed that Petota is of ancient hybrid origin, with all members exhibiting stable mixed genomic ancestry, derived from the Etuberosum and Tomato lineages ca. 8-9 million years ago. Our functional experiments further validated the crucial roles of parental genes in tuberization, indicating that interspecific hybridization is a key driver of this innovative trait. This trait, along with the sorting and recombination of hybridization-derived polymorphisms, likely triggered the explosive species diversification of Petota by enabling occupation of broader ecological niches. These findings highlight how ancient hybridization fosters key innovation and drives subsequent species radiation."

Ancient hybridization underlies tuberization and radiation of the potato lineage

19.09.2025 15:50 — 👍 3    🔁 2    💬 0    📌 0
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Here is an interesting review published in the “N3AF” (Notes from the French Academy of Agriculture). lnkd.in/d-sMMui2

Why not do the same! The editor and reviewers are serious and constructive, there is a DOI for easy dissemination and citations, and it's FREE! doi.org/10.58630/pub...

19.09.2025 14:24 — 👍 2    🔁 2    💬 0    📌 0
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Arabidospis ... the last annual MASC (Multinational Arabidopsis Steering Committee) report (2024-2025) is available ! – Arabidopsis, arabidopsisresearch.org/masc-publica...

15.09.2025 08:46 — 👍 13    🔁 11    💬 0    📌 0
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A single-cell multi-omics atlas of rice - Nature A single-cell multi-omics atlas of rice is revealed, providing insight into cell-type functions and molecular programs.

A single-cell multi-omics atlas of rice

22.08.2025 10:13 — 👍 2    🔁 0    💬 0    📌 0
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The characterization of the LEAFY COTYLEDON 2 activation domains reveals its conserved dual mode of action in flowering plants (IJPB, SPS) Seed development in Arabidopsis thaliana is largely controlled by a set of transcription factors (TFs) called LAFL, including LEAFY COTYLEDON 2 (LEC2). In this study, we investigated the structure/function relationships of the protein LEC2 outside the well-described B3 DNA-binding domain. The results presented here unveil the presence of transcription activation domains (ADs) within the unstructured ends of the protein that are conserved in eudicots. Expression in both yeast and moss protoplasts of deleted and mutated versions of LEC2 confirmed the transcriptional activity of these ADs. Surprisingly, the expression of LEC2 variants lacking their ADs restored a wild-type seed phenotype in lec2 mutant, showing that these ADs are not essential for LEC2 function in seed development. Moreover, ZmAFL2/ZmABI19, a maize B3 factor related to LEC2 but deprived of N-ter AD, can also complement lec2 seed phenotype and induce abnormal vegetative development when overexpressed in Arabidopsis, supporting this observation. This work suggests that LEC2 can act both as a classical transcriptional activator or without transactivation activity, probably through its interaction with the pioneer factor LEC1. Taken together, the results provide important insights into the function of the LAFL master regulators during seed development, from cell differentiation to storage accumulation in seed.   https://doi.org/10.1111/tpj.70380

The characterization of the LEAFY COTYLEDON 2 activation domains reveals its conserved dual mode of action in flowering plants (IJPB, SPS)

21.08.2025 11:25 — 👍 4    🔁 3    💬 0    📌 0
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Aucun impact sur la santé : une étude d’envergure confirme l'innocuité des OGM Les OGM sont-ils sûrs ? Ont-ils des effets néfastes à long terme sur la santé ? Il y a treize ans, l’étude Séralini l’affirmait, avant d’être rétractée. Aujourd’hui, une recherche de long terme menée ...

Les OGM ont-ils des effets néfastes sur la santé ? Il y a treize ans, l’étude Séralini l’affirmait, avant d’être rétractée. Aujourd’hui, une recherche menée sur deux générations de primates démontre le contraire. Bénéficiera-t-elle de la même couverture médiatique ?
lel.media/aucun-impact...

01.08.2025 04:41 — 👍 54    🔁 28    💬 9    📌 5
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Colloque, Les plantes dans un environnement à fort CO2 : contraintes et opportunités | Académie des sciences (30/09/2025 - 10:00 - mar 30/09/2025 - 17:00) Les plantes dans un environnement à fort CO2 : contraintes et opportunités Ce colloque vise à dresser un état des connaissances et des enjeux de l'influence exercée par l’élévation du CO2 atmosphérique sur le monde végétal.   Inscriptions à venir ! Colloque académique destiné à un public scientifique ou non scientifique éclairé. Le dérèglement climatique engendré par l’élévation du CO2 atmosphérique et autres gaz à effet de serre aggrave les contraintes abiotiques exercées sur les plantes : sécheresse, chaleur, événements climatiques extrêmes, mettant en danger leur productivité et même leur survie. Par ailleurs, et de manière singulière par rapport aux autres organismes vivants, une concentration plus élevée de CO2 stimule la croissance de la plupart des végétaux, du fait d’une photosynthèse accrue. Cet effet positif, dénommé « fertilisation CO2 », a également un impact important sur le transfert de carbone dans les sols, les plantes contribuant ainsi à l’atténuation du changement climatique.  Organisé conjointement par l'Académie des sciences et l'Académie d'agriculture de France, ce colloque abordera l’état des connaissances multidisciplinaires dans ces domaines et fera la synthèse des contraintes et opportunités que représente pour les plantes et les agroécosystèmes associés une élévation du CO2 atmosphérique.   Organisateurs Christophe Maurel, membre de l'Académie des sciences, directeur de recherche au CNRS, directeur de l'Institut des sciences des plantes de Montpellier (IPSiM - CNRS/Inrae/Université de Montpellier) Alain Gojon, membre correspondant de l’Académie d’agriculture de France, directeur de recherche honoraire d’Inrae, ancien directeur (2012-2020) du laboratoire de Biochimie et physiologie moléculaire des plantes (B&PMP - CNRS/Inrae/Université de Montpellier/Institut Agro),  devenu l’Institut des sciences des plantes de Montpellier (IPSiM). Philippe Gate, membre de l’Académie d’agriculture de France, ex-directeur scientifique d’Arvalis-Institut du végétal (2009-2021)   Intervenants (programme détaillé à venir) Marie-Odile Bancal, maître de conférences à AgroParisTech, laboratoire Écologie fonctionnelle et écotoxicologie des agroécosystèmes (Ecosys – Université Paris-Saclay/Inrae/AgroParisTech) Claire Chenu, membre correspondant de l’Académie d’agriculture de France, membre de l’Académie des technologies, directrice de recherche à Inrae, professeure consultante à AgroParisTech, laboratoire Écologie fonctionnelle et écotoxicologie des agroécosystèmes (Ecosys – Université Paris-Saclay/Inrae/AgroParisTech) Philippe Ciais, membre de l’Académie des sciences, membre de l'Académie d'agriculture de France, directeur de recherche au CEA, Laboratoire des sciences du climat et de l’environnement (LSCE - CEA/CNRS/Université Versailles Saint-Quentin-en-Yvelines) de l’Institut Pierre-Simon Laplace. Pierre Crozet, maître de conférences à Sorbonne Université, laboratoire de Biologie computationnelle, quantitative et synthétique (CQSB – CNRS/Sorbonne Université) Meije Gawinowski, chargée de recherche à Inrae, laboratoire Écologie fonctionnelle et écotoxicologie des agroécosystèmes (Ecosys – Université Paris-Saclay/Inrae/AgroParisTech) Xenie Johnson, directrice de recherche au CEA, responsable adjointe de l’équipe Photosynthèse et Environnement Nathalie Leonhardt, directrice de recherche au CEA, responsable de l’équipe Plant Environmental Physiology and Stress Signaling (PEPSS), Institut Biosciences et Biotechnologies d'Aix - Marseille (BIAM – Aix-Marseille Université/CEA/CNRS) David Makowski, directeur de recherche, Inrae/AgroParisTech/Université Paris-Saclay, Département AgroEcosystem Antoine Martin, directeur de recherche au CNRS, responsable de l’équipe Signalisation nitrate et régulation par l’environnement (Sirene), Institut des sciences des plantes de Montpellier (IPSiM – CNRS/Inrae/Université de Montpellier)

Colloque : Les plantes dans un environnement à fort CO2 : contraintes et opportunités | Académie des sciences, https://www.academie-sciences.fr/les-plantes-dans-un-environnement-fort-co2-contraintes-et-opportunites

17.07.2025 08:17 — 👍 4    🔁 3    💬 0    📌 0
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June Issue. Read FREE: Low glycemic index rice for countering diabetes epidemic in Asia (see cover); Advances in digital camera-based phenotyping of Botrytis disease development; Epitranscriptomic regulation through phase separation in plants; & much more
www.cell.com/trends/plant...
#plantscience

12.06.2025 11:56 — 👍 4    🔁 3    💬 0    📌 0
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Mathilde Grelon elected to EMBO Membership, ijpb.versailles.inrae.fr/en/news/math...

07.07.2025 09:52 — 👍 4    🔁 1    💬 0    📌 0
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📅 Oct 1st, @ijpb-versaillescly.bsky.social will honor our dear colleague Jean-François Morot-Gaudry 🌿

📍 INRAE Versailles

⌚ From 9:30 AM

👨‍🔬 With talks by C. Masclaux, A. Limami, C. Foyer, B. Hirel & more

📝 Register: 👉 bit.ly/4kj9eUd

@inrae-france.bsky.social
@irhs-angers.bsky.social

27.06.2025 15:28 — 👍 4    🔁 5    💬 0    📌 1
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🎙️ #IJPB Seminar

We're thrilled to host @mat-ingouff.bsky.social from @umontpellier.bsky.social for a talk on live-imaging sensors to track CG methylation in plant cells🌿🧬

📅 Thursday, July 10
🕚 11 AM

🔗 More info: bit.ly/44rhlrW

@inrae-france.bsky.social @univparissaclay.bsky.social

#PlantScience

07.07.2025 06:39 — 👍 4    🔁 1    💬 0    📌 0

Congrats, Hervé!
Your pioneering research @ijpb-versaillescly.bsky.social continues to advance our understanding of epigenetic mechanisms and post-transcriptional regulation - an inspiration to the entire plant science community! 🌱👏

05.07.2025 10:14 — 👍 3    🔁 3    💬 0    📌 0
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📣 Join us for the 3rd Carbon Allocation in Plants Workshop 🇨🌿

🗓️ Oct 27–29, 2025

📍 INRAE Versailles – @ijpb-versaillescly.bsky.social

🌱 Explore carbon flow in plants with top researchers!

🔗 Register: bit.ly/4kYzzrT ⏳ 10th of August

ℹ️ Info: bit.ly/43HpN5P

🙏 Thanks to all partners 👇 see below

24.06.2025 13:07 — 👍 13    🔁 9    💬 1    📌 0
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🎯EPSO Contributions from plant research and innovation to EU circular regenerative and competitive #Bioeconomy – position paper from #PlantFactories, #Plants&Microbiomes and #Horticulture Working Groups. bit.ly/449vwSd. #PlantScience #SDG #HorizonEU

24.06.2025 10:15 — 👍 9    🔁 6    💬 0    📌 0

www.youtube.com/playlist?lis...

20.06.2025 06:27 — 👍 0    🔁 0    💬 0    📌 0
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#IJPB x SPS seminar

🤩 Excited to host @rnaplant.bsky.social (@ibmp-cnrs.bsky.social) to talk on RNA polymerase & transposable elements! 🧬🌲

🗓️ Tue 17 June 🕜 3 PM

More 👉 bit.ly/43H8dAl

@inrae-france.bsky.social @ecodocseve.bsky.social @univparissaclay.bsky.social @spsplantsciences.bsky.social

15.06.2025 05:16 — 👍 8    🔁 5    💬 0    📌 0
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Want to see your amazing plant reproduction picture on the cover of this fantastic journal @springernature.com? 🤩🌱
We are looking for it!
📸Take part in our contest and get the prize!
More info? 👉visit our website!😉

01.04.2025 19:36 — 👍 4    🔁 4    💬 0    📌 0
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Ces pays qui ont réussi à réduire pesticides et engrais chimiques en accompagnant les agriculteurs Pour réduire les pesticides ou les engrais chimiques, il faut que les agriculteurs aient intérêt à le faire et soient accompagnés dans ces changements.

Ces pays qui ont réussi à réduire pesticides et engrais chimiques en accompagnant les agriculteurs
theconversation.com/ces-pays-qui...

06.06.2025 09:16 — 👍 0    🔁 0    💬 0    📌 0
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"Plant Sciences in the Anthropocene" workshop,
videos of the seminars are available on youtube, www.youtube.com/@institutpas...

01.06.2025 18:40 — 👍 5    🔁 5    💬 1    📌 0

@lepiniec is following 20 prominent accounts