Plant Sciences
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Rescooped by Saclay Plant Sciences from SEED-DREAM Lab info
onto Plant Sciences
February 6, 9:03 AM
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Multi-omic analyses unveil contrasting composition and spatial distribution of specialized metabolites in seeds of Camelina sativa and other Brassicaceae (IJPB, SPS)

Multi-omic analyses unveil contrasting composition and spatial distribution of specialized metabolites in seeds of Camelina sativa and other Brassicaceae (IJPB, SPS) | Plant Sciences | Scoop.it

Seeds of Brassicaceae produce a large diversity of beneficial and antinutritional specialized metabolites (SMs) that influence their quality and provide resistance to stresses. While SM distribution has been described in leaves and root tissues, limited information is available about their spatiotemporal accumulation in seeds. Camelina sativa (camelina) is an oilseed Brassicaceae cultivated for human and animal nutrition and for industrial uses. While we previously explored SM diversity and plasticity, no information is available about SM distribution and expression of related proteins and genes in camelina seeds. In this study, we used a multi-omic approach, integrating untargeted metabolomics, proteomics, and transcriptomics to investigate the synthesis, modification, and degradation of SMs accumulated in camelina seed tissues (seed coat, endosperm, embryo) at six developmental and two germination stages. Metabolomic results showed distinct patterns of SMs and their related pathways, highlighting significant contrasts in seed composition and spatial distribution for the defense-related and antinutritional glucosinolate (GSL) compounds among camelina, Arabidopsis thaliana, and Brassica napus, three closely related Brassicaceae species. Notably, thanks to metabolomic and proteomic/transcriptomic techniques the variation in GSL spatial distributions was primarily driven by differences in their structure (metabolomics data) and transport (transcriptomic and proteomic data) mechanisms. Long-chain C8-C11 methylsulfinylalkyl GSLs were predominantly accumulated in the seed coat and endosperm, while mid- and short-chain C3-C7 methylsulfinylalkyl GSLs were accumulated in the embryo. Characterizing the spatial dynamics of seed SMs provides valuable insights that can guide the development of crops with optimized distribution of beneficial and toxic metabolites, improving seed nutritional profiles.


Via Loïc Lepiniec
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Scooped by Saclay Plant Sciences
May 21, 7:45 AM
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N-terminal protein acetylation: Global regulator of plant stress responses and protein stability, SPS online seminar  and video

N-terminal protein acetylation: Global regulator of plant stress responses and protein stability, SPS online seminar  and video | Plant Sciences | Scoop.it
 
The composition of cellular proteomes rapidly adjusts in response to internal and external stimuli. Protein modifications add yet another layer of plasticity to this intricately balanced and dynamic system. In humans, N-terminal acetylation (NTA) is a pervasive and essential protein modification catalyzed by seven Nα-acetyltransferases (Nat) in a co-translational or post-translational manner. In this talk, I will summarize our efforts to characterize the plant Nat machinery and its relevance for coordinating growth and development upon diverse environmental challenges. Our findings uncovered that NTA is a phytohormone-controlled mechanism determining global proteome stability, which is particularly critical for the drought stress response of plants.
 
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Rescooped by Saclay Plant Sciences from SCIENCES DU VEGETAL
May 12, 7:17 AM
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Pharma, cosmétique… et si les déchets végétaux aidaient à développer l’économie circulaire ?

Pharma, cosmétique… et si les déchets végétaux aidaient à développer l’économie circulaire ? | Plant Sciences | Scoop.it
Aujourd’hui considérés comme des déchets, les sous-produits de la biomasse (notamment générés par l’agriculture et l’agroalimentaire) présentent pourtant un potentiel intéressant.

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Rescooped by Saclay Plant Sciences from Plant and Seed Biology
April 29, 10:47 AM
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Mensuel de l'Académie d'agriculture de France n° 104 (Mai 2025)

Mensuel de l'Académie d'agriculture de France n° 104 (Mai 2025) | Plant Sciences | Scoop.it

Via Loïc Lepiniec
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Scooped by Saclay Plant Sciences
April 17, 9:22 AM
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Transcription and RNA splicing factors: The masters and commanders of plant thermotolerance, Sotirios Fragkostefanakis - SPS Webinar and video, 15/04/2025

Transcription and RNA splicing factors: The masters and commanders of plant thermotolerance, Sotirios Fragkostefanakis - SPS Webinar and video, 15/04/2025 | Plant Sciences | Scoop.it

"The ability of plants to tolerate heat stress depends on the activation of the heat stress response, a highly coordinated mechanism that drives extensive changes in gene expression. Heat stress transcription factors (HSFs) serve as the central regulators of this response, playing a crucial role in modulating thermotolerance. I will demonstrate, using tomato as a model system, how different HSFs cooperate to fine-tune the intensity and duration of the response, enabling plants to acclimate to prolonged periods of elevated temperatures. Beyond HSF-dependent transcriptional regulation, RNA splicing emerges as another key mechanism controlling gene expression under heat stress. Our findings indicate that effective thermotolerance requires both the coordinated and independent activities of transcription factors and splicing regulators. This dual-layered regulation optimizes cellular reprogramming, ensuring plant survival under high-temperature conditions".

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Rescooped by Saclay Plant Sciences from Life Sciences Université Paris-Saclay
March 26, 5:32 PM
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Des analyses multi-omiques révèlent une composition et une distribution spatiale contrastées des métabolites spécialisés dans les graines de Camelina sativa et d'autres Brassicacées (IJPB, SPS)

Des analyses multi-omiques révèlent une composition et une distribution spatiale contrastées des métabolites spécialisés dans les graines de Camelina sativa et d'autres Brassicacées (IJPB, SPS) | Plant Sciences | Scoop.it

Les graines de caméline (Camelina sativa) sont riches en huile et en acides gras d’intérêt pour la nutrition humaine et animale et différents secteurs industriels, notamment la production de biocarburant. Elles accumulent également de nombreux métabolites spécialisés (MS) jouant un rôle clé dans leurs interactions avec l’environnement. Malgré leur importance pour la qualité des graines et leur potentiel de valorisation industrielle, la distribution des MS ainsi que les protéines et gènes associés reste peu explorée dans les graines.

 

Dans un article récemment publié dans The Plant Journal, des membres des équipes SEED-DREAM et PHYGERM, de la plateforme Chimie & Métabolisme de l’Institut Jean-Pierre Bourgin - Sciences du Végétal - IJPB (UPSaclay/INRAE/AgroParisTech, Versailles) et de la plateforme PROTEOGEN (Université de Caen Basse-Normandie) ont réalisé des analyses multi-omiques sur les tissus des graines (embryon et enveloppe & albumen) de caméline à différents stades de développement et de germination.

 

Les analyses métabolomiques (LC-MS/MS) ont notamment révélé des différences marquées dans la composition et la distribution spatiale des glucosinolates, des composés antinutritionnels impliqués dans la réponse aux stress biotiques, chez Camelina sativa, Arabidopsis thaliana et Brassica napus. Il a été montré que la distribution des glucosinolates variait selon la longueur de leur chaîne latérale, et les analyses transcriptomiques (RNA-seq) et protéomiques (LC-MS/MS) suggèrent que leur accumulation différenciée dans les tissus pourrait être liée à des mécanismes de transport.

 

Ces résultats offrent des connaissances précieuses pour le développement de cultures optimisées, favorisant une meilleure répartition des métabolites bénéfiques et toxiques afin d’améliorer le profil nutritionnel des graines.

 

-> Contact : massimiliano.corso@inrae.fr / lea.barreda@inrae.fr


Via Life Sciences UPSaclay
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Rescooped by Saclay Plant Sciences from SEED-DREAM Lab info
March 4, 2:49 AM
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Arabidopsis research in 2030: Translating the computable plant

Arabidopsis research in 2030: Translating the computable plant | Plant Sciences | Scoop.it

https://onlinelibrary.wiley.com/doi/10.1111/tpj.70047

Plants are essential for human survival. Over the past three decades, work with the reference plant Arabidopsis thaliana has significantly advanced plant biology research. One key event was the sequencing of its genome 25 years ago, which fostered many subsequent research technologies and datasets. Arabidopsis has been instrumental in elucidating plant-specific aspects of biology, developing research tools, and translating findings to crop improvement. It not only serves as a model for understanding plant biology and but also biology in other fields, with discoveries in Arabidopsis also having led to applications in human health, including insights into immunity, protein degradation, and circadian rhythms. Arabidopsis research has also fostered the development of tools useful for the wider biological research community, such as optogenetic systems and auxin-based degrons. This 4th Multinational Arabidopsis Steering Committee Roadmap outlines future directions, with emphasis on computational approaches, research support, translation to crops, conference accessibility, coordinated research efforts, climate change mitigation, sustainable production, and fundamental research. Arabidopsis will remain a nexus for discovery, innovation, and application, driving advances in both plant and human biology to the year 2030, and beyond.


Via Loïc Lepiniec
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Scooped by Saclay Plant Sciences
February 20, 3:22 PM
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Specialized metabolome and transcriptome atlas of developing Arabidopsis thaliana seed under warm temperatures(IJPB, SPS)

Specialized metabolome and transcriptome atlas of developing Arabidopsis thaliana seed under warm temperatures(IJPB, SPS) | Plant Sciences | Scoop.it
Seed development, which depends on parent plants genetic background and mother plant environmental conditions, is a major component determining seed composition. Seed quality is a main agricultural concern, impacting both food and non-food applications, while also playing a central role in biodiversity conservation and environment protection. Climate change, in particular the emergence of extremely high temperatures, constitute a critical global threat to agriculture. Specialized metabolites (SMs) play crucial roles in the interactions of plants and seeds with their environments. Several SMs are known to be protective compounds involved in seed stress responses, thus impacting their quality. In this study, we performed untargeted metabolomic (LC-MS/MS) and transcriptomic (RNA-Seq) analyses of Arabidopsis thaliana seeds harvested at six developmental stages (Globular, Transition, Torpedo, Bent cotyledon, Mature green and Dry seed), and developed under control and warm temperature conditions. Those data provide an original and valuable resource that could be used to identify SMs and genes involved in seed heat stress responses and for the study of their regulation and functions during seed development.
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Rescooped by Saclay Plant Sciences from SEED-DREAM Lab info
February 6, 9:03 AM
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Multi-omic analyses unveil contrasting composition and spatial distribution of specialized metabolites in seeds of Camelina sativa and other Brassicaceae (IJPB, SPS)

Multi-omic analyses unveil contrasting composition and spatial distribution of specialized metabolites in seeds of Camelina sativa and other Brassicaceae (IJPB, SPS) | Plant Sciences | Scoop.it

Seeds of Brassicaceae produce a large diversity of beneficial and antinutritional specialized metabolites (SMs) that influence their quality and provide resistance to stresses. While SM distribution has been described in leaves and root tissues, limited information is available about their spatiotemporal accumulation in seeds. Camelina sativa (camelina) is an oilseed Brassicaceae cultivated for human and animal nutrition and for industrial uses. While we previously explored SM diversity and plasticity, no information is available about SM distribution and expression of related proteins and genes in camelina seeds. In this study, we used a multi-omic approach, integrating untargeted metabolomics, proteomics, and transcriptomics to investigate the synthesis, modification, and degradation of SMs accumulated in camelina seed tissues (seed coat, endosperm, embryo) at six developmental and two germination stages. Metabolomic results showed distinct patterns of SMs and their related pathways, highlighting significant contrasts in seed composition and spatial distribution for the defense-related and antinutritional glucosinolate (GSL) compounds among camelina, Arabidopsis thaliana, and Brassica napus, three closely related Brassicaceae species. Notably, thanks to metabolomic and proteomic/transcriptomic techniques the variation in GSL spatial distributions was primarily driven by differences in their structure (metabolomics data) and transport (transcriptomic and proteomic data) mechanisms. Long-chain C8-C11 methylsulfinylalkyl GSLs were predominantly accumulated in the seed coat and endosperm, while mid- and short-chain C3-C7 methylsulfinylalkyl GSLs were accumulated in the embryo. Characterizing the spatial dynamics of seed SMs provides valuable insights that can guide the development of crops with optimized distribution of beneficial and toxic metabolites, improving seed nutritional profiles.


Via Loïc Lepiniec
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Rescooped by Saclay Plant Sciences from Life Sciences Université Paris-Saclay
January 27, 2:57 AM
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FOCUS PLATEFORME : AAP SESAME 2024 : La métabolomique végétale pour la bioéconomie : un nouveau spectromètre de masse haute résolution à l’IJPB INRAE Versailles en 2025 !

FOCUS PLATEFORME : AAP SESAME 2024 : La métabolomique végétale pour la bioéconomie : un nouveau spectromètre de masse haute résolution à l’IJPB INRAE Versailles en 2025 ! | Plant Sciences | Scoop.it

La plateforme Observatoire du Végétal - Chimie Métabolisme dite OV-Chimie (Institut Jean Pierre Bourgin - Sciences du végétal, IJPB, centre INRAE de Versailles-Saclay) est dédiée à l’analyse des petites molécules du végétal, grâce notamment au développement d’analyses métabolomiques ciblée et non ciblée par spectrométrie de masse.

 

Le projet CONNEXION, porté conjointement par l’OV-Chimie et l’Institut Lavoisier de Versailles (ILV), appuyé par le consortium SMaCS et soutenu par l’Université Paris-Saclay, a été proposé courant 2024 à la région Ile-de-France dans le cadre de l’appel d’offre SESAME. CONNEXION s’inscrit dans le développement de la bioéconomie, avec pour objectifs de contribuer à produire de la biomasse en quantité et qualité et de la transformer en molécules à haute valeur ajoutée, dont certaines pour usage agricole ou leur rôle dans la nutrition, grâce à des méthodes d’analyse chimique de pointe comme la spectrométrie de masse (MS).

 

CONNEXION vient d’obtenir une subvention de 500 k€ de SESAME, qui s’ajoutant aux financements acquis (fonds propres des unités porteuses, GIS IBISA, EUR SPS, ANR, CNRS, AAP Emergence…) devrait permettre l’acquisition en 2025 de deux spectromètres de masse, dont un de très haute résolution couplé à une chromatographie liquide (LC) bidimensionnelle (LC/extraction sur phase solide en ligne (LC/SPE en ligne) + LC Ultra Haute Performance UHPLC), pour l’OV-Chimie.

 

L’achat de cet équipement permettra une caractérisation plus exhaustive des composés présents tels que les métabolites spécialisés, les lipides ou les oligosaccharides afin i) d’acquérir une meilleure connaissance des mécanismes qui sous-tendent la capacité des plantes à s’adapter à des conditions extrêmes et se défendre contre les attaques pathogènes, ii) de découvrir de nouvelles molécules bioactives utilisables en agriculture, nutrition et/ou en pharmacologie, et iii) de mieux caractériser les produits issus des cultures pour développer les filières industrielles du biosourcé. Selon la configuration utilisée, le nouvel équipement permettra par la SPE en ligne de réduire les étapes chronophages de préparation des échantillons, ou par la deuxième séparation chromatographique de multiplier le pouvoir de séparation et donc l’exhaustivité de l’analyse. Cet appareil pourra aussi être utilisé pour toute approche de métabolomique ou lipidomique appliquée aux sciences de la vie.

 

-> Contacts : François Perreau (francois.perreau@inrae.fr) et Aline Voxeur (aline.voxeur@inrae.fr)

Plug In Labs Université Paris-Saclay : cliquer ICI

 

Aussi, le 13 janvier 2020, la plateforme publiait son premier FOCUS PLATEFORME. Le relire ? FOCUS PLATEFORME : L'analyse des métabolites spécialisés des plantes : un outil pour l'étude des interactions plantes/microorganismes, une spécificité de la plateforme Chimie-Métabolisme-Métabolome de l'Observatoire du Végétal

 

IJPB / Observatoire du végétal - Plateforme Chimie-Métabolisme. La plate-forme "Observatoire du végétal, Chimie-Métabolisme" propose la quantification, la caractérisation et l'identification de composés chimiques du végétal : les hormones végétales et autres molécules signalisantes, les métabolites centraux (sucres, acides aminés, acides organiques) ou spécialisés (flavonoîdes, caroténoïdes, sphingolipides, glucosinolates, ...), ainsi que les composés issus de la biomasse végétale (oligosaccharides, paroi végétale, polyphénols,...). Elle se fonde sur l'expertise de ses agents en analyse de chimie du végétal, ciblée et non ciblée et en traitement des données (statistiques, réseaux moléculaires) pour la métabolomique, la lipidomique et l’oligoglycomique. Elle s'appuie aussi sur des appareils de chromatographie, notamment couplés à de la spectrométrie de masse performante (GC-MS, UPLC-MS/MS, UPLC-Q-TOF). La plate-forme a noué plusieurs collaborations industrielles ces dernières années (LVMH, Syngenta, Nestlé, Sederma).


Via Life Sciences UPSaclay
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Rescooped by Saclay Plant Sciences from SEED-DREAM Lab info
January 25, 1:00 PM
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Sabine Riffault, nouvelle déléguée régionale d’INRAE en Île-de-France | INRAE

Sabine Riffault, nouvelle déléguée régionale d’INRAE en Île-de-France | INRAE | Plant Sciences | Scoop.it
Sabine Riffault est nommée déléguée régionale d’INRAE pour la région Île-de-France, et succède à Loïc Lepiniec au 1er janvier 2025. Elle a pour mission d’élaborer et de coordonner la politique d’action régionale de l’Institut, en cohérence avec la stratégie nationale et celles des départements scientifiques, ainsi que des deux centres INRAE impliqués : Versailles-Saclay et Jouy-en-Josas - Antony.

Via Loïc Lepiniec
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December 17, 2024 5:09 PM
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Summer School 2025 Advanced Plant Imaging – API : From super-resolution to fluorescence lifetime imaging microscopy  June 29 - July 4, 2025 – Versailles (France)

Summer School 2025 Advanced Plant Imaging – API : From super-resolution to fluorescence lifetime imaging microscopy  June 29 - July 4, 2025 – Versailles (France) | Plant Sciences | Scoop.it

This Summer School is organized by the Saclay Plant Sciences (SPS) network, one of the largest European plant sciences communities, and will be hosted by the cytology and imaging platform of the Institut Jean Pierre Bourgin - Plant Sciences in Versailles.

Microscopy is a fundamental tool for understanding the functioning of plants at the cellular to molecular scale. Recent technological advances (super-resolution, fluorescence lifetime imaging, biosensors...) now make it possible to address new scientific questions. This Summer School will provide theoretical and practical insights into these aspects for 20 outstanding and enthusiastic PhD students or young postdoctoral researchers divided in small groups. Participants will have the opportunity to discuss the advantages and disadvantages of different modalities, sample preparation, image acquisition, and data processing throughout the week.

 

The Summer School will include:


> A set of theoretical lectures (~9 hours) on the major issues in advanced imaging. The lectures will be given by experts in the field, who will be available for discussions during the Summer School, giving the participants an insight into the latest research findings and identifying key open questions in the field.


> A set of practical sessions (~24 hours + Restitution) to tackle real-life approaches on plant samples and compare different modalities of conventional confocal microscopy, super-resolution and fluorescence lifetime analysis. All Summer School participants will have access to all practical sessions, in groups of 3 or 4, with one (or more) expert per system. Given the advanced technologies covered, the Summer School is aimed at PhD students or young post-docs who already have practical experience in confocal microscopy. At the end of the Summer School, the experiences of all participants will be confronted in a general discussion, to expose the differences and possible advantages of the imaging technologies approached.


> Participant flash-talks and poster session (5 hours)

> Social activities

 

This intensive and varied one-week program will allow many opportunities to discuss with speakers and fellow participants.

 

Deadline for application: March 4, 2025 (midnight)

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December 6, 2024 8:52 AM
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International Master 1 "Plant and Microbial molecular Biology" (PMB) of the Université Paris-Saclay (application will open in January)

International Master 1 "Plant and Microbial molecular Biology" (PMB) of the Université Paris-Saclay (application will open in January) | Plant Sciences | Scoop.it

Dear colleague,

 

The International Master 1 'Plant and Microbial molecular Biology', entirely taught in English, has opened at the beginning of the academic year 2023, in the framework of the "Saclay Plant Sciences" (SPS) network.

 

This Master 1, intended primarily for international students, aims to train, through research, future specialists in the most recent concepts of biology at a molecular level, applied to the current challenges of research on plants and micro-organisms.

This training is part of new pedagogical practices called "active" which favours the dynamic participation of students, an immersion in the laboratories as well as individual tutoring to develop the autonomy of students in project management.

 

We would be grateful if you could circulate this announcement and the attached flyer within your structure and international networks.

 

All details are available on the WEBSITE.

 

Marianne Delarue and Matthieu Jules
Coordinators of the Master PMB

 

 
Saclay Plant Sciences's insight:

International Master

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Rescooped by Saclay Plant Sciences from Plant Sciences
November 23, 2024 4:28 AM
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 Workshop  "PLant science in the ANThropocene" (PLANT), March 24th to April 4th 2025 at University Paris-Saclay, applications are open

 Workshop  "PLant science in the ANThropocene" (PLANT), March 24th to April 4th 2025 at University Paris-Saclay, applications are open | Plant Sciences | Scoop.it

We are pleased to announce that the "PLant science in the ANThropocene" (PLANT) workshop will take place March 24th to April 4th 2025 at University Paris-Saclay. It will address key challenges from basic sciences to socio-economic and environmental aspects including climate change. Applications for researchers (postdoc level and above) to participate have opened today, see
https://eng-saclay-plant-sciences.hub.inrae.fr/events/workshop-institut-pascal
The deadline for applying is December 17th.



The "PLant science in the ANThropocene" (PLANT) workshop will run from March 24 to April 4, 2025 at the Institut Pascal of the University Paris-Saclay (campus about 25 km south of Paris).

This 2-week workshop will address key challenges for the international Plant Science community, from basic sciences to socio-economic and environmental aspects including climate change. It will gather about 60 international scientists. The attendance will mix high stature senior scientists, together with numerous younger ones.

The program will focus on three themes:
- Theme I: "Frontiers in Plant Science fundamental research" (March 24-25-26)
- Theme II: “Feeding the planet: roles for Plant Science and associated socio-economic challenges" (March 27-28-31 and April 1)
- Theme III: "Plants as factories: from chemical compounds to mitigating climate change” (April 2-3-4)

Mornings will consist mainly of presentations by about 20 senior scientists, who will provide their vision of how to rise to those challenges, while the afternoon sessions will be devoted principally to brainstorming across generations on selected topics. This workshop will thus require input from all participants, the goals being the emergence of consensus community opinions and the specification of paths to success for several major challenges, be they at the level of training the next generation, guiding deciders of public policies, or connecting with the wider public on the importance of plant sciences in the Anthropocene. All these challenges are of high complexity and depend on several disciplines. Thus, beyond plant biologists and geneticists, some participants will come from agronomy, ecology, social and environmental sciences, economics, and also from chemical, physical and computational sciences.

Syntheses in the form of opinion papers will be drafted for publication.

APPLICATIONS ARE OPEN FOR PARTICIPATION IN THIS WORKSHOP

Applications deadline: Tuesday December 17, midnight

To know more and apply : https://indico.ijclab.in2p3.fr/event/10763/

Admission is restricted because of capacity constraints and the need to have the brainstorming sessions be effective. There are no registration fees and lunches and coffee breaks will be provided.

Participants must hold a PhD

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May 12, 7:18 AM
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RAPPEL ! Les Journées Omiques Végétales – 23-24 juin 2025

RAPPEL ! Les Journées Omiques Végétales – 23-24 juin 2025 | Plant Sciences | Scoop.it

Les plateformes omiques végétales du plateau de Saclay organisent les 23 et 24 juin 2025 un colloque dédié aux approches qu’elles développent : "Les Journées des Omiques Végétales".

 

Ces journées, qui se dérouleront cette année pour la première fois à l'IDEEV, sont ouvertes à toutes les personnes intéressées par ces approches et les outils développés par nos plateformes.

 

Ce colloque sera articulé autour de présentations entre le 23 juin après-midi et le 24 juin, couvrant les différentes technologies proposées par les plateformes, des projets innovants menés par des utilisateurs en collaboration avec nos plateformes et aussi les derniers développements technologiques du domaine. Une visite des Plateformes et des discussions avec leurs membres vous sont proposées le 24 juin après-midi.


Via Life Sciences UPSaclay
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April 30, 8:24 AM
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Reflections from the “Plant Sciences in the Anthropocene” Workshop – Two Weeks of Conversations, Insight, and Impact

Reflections from the “Plant Sciences in the Anthropocene” Workshop – Two Weeks of Conversations, Insight, and Impact | Plant Sciences | Scoop.it
From the very first presentation to the final wrap-up, the workshop was a deep dive into the challenges—and opportunities—plant science faces in the changing world of today… and probably the one of tomorrow.
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Rescooped by Saclay Plant Sciences from Plant and Seed Biology
April 27, 5:15 AM
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New Peer Community In (PCI) Journal .. PLANTS! http://plants.peercommunityin.org

New Peer Community In (PCI) Journal .. PLANTS! http://plants.peercommunityin.org | Plant Sciences | Scoop.it
Peer Community in Plants

Via Loïc Lepiniec
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April 14, 3:54 AM
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Kenneth D. Birnbaum - "Built to rebuild: how plants remake tissue patterns after wounding", @KenBirnbaum, webinar and video SPS 08/04/2025

Kenneth D. Birnbaum - "Built to rebuild: how plants remake tissue patterns after wounding", @KenBirnbaum, webinar and video SPS 08/04/2025 | Plant Sciences | Scoop.it

Kenneth D. Birnbaum (New York University, USA), Kenneth D. @KenBirnbaum

Plants have a remarkable ability to regenerate their body parts after injury. In many cases, they make a new meristem after complete loss of stem cells and unique cell types. The pattern that emerges seemingly has few guides and reestablishes without the continuity of events that happen in embryogenesis. We have been working on several systems that examine that process in Arabidopsis root regeneration. I will detail some recent work in which we follow the trajectory of cells that reprogram from one cell fate to another during the repair process. We follow cells using live microscopy and single cell RNA/ATAC-seq methods to ask about the role of cell division and chromatin reorganization. We find that division is a necessary step for complete reprogramming of cell fate but it is not the earliest step. Chromatin closing is required within hours not only to shut down old cell identities but also to moderate a potentially prohibitive stress response. This is in line with other work in the lab that shows how plants, as good as they are at regeneration, are not optimized to regenerate. Rather, they balance defense and regeneration and the two processes are not necessarily completely compatible.

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March 11, 12:55 PM
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New roles for MAP Kinases in nitrate perception (IPS2, SPS)

New roles for MAP Kinases in nitrate perception (IPS2, SPS) | Plant Sciences | Scoop.it

As part of a collaborative study between the NUTS team from the Institute Jean-Pierre Bourgin (IJPB) and STRESS team from the Institute of Plant Sciences Paris-Saclay (IPS2), recently published in  TThe Plant Journal, scientists have discovered a new signalling pathway  that helps plants to acquire nitrogen, a nutrient vital for growth. The study reveals that nitrate, a form of nitrogen taken from the soil, triggers a cascade of molecular events involving specific proteins called MAP kinases. This cascade is initiated by the NLP (NIN-Like Protein) transcription factors and involves MAP3K13 and MAP3K14, two kinases whose role was poorly understood until recently. This discovery adds to our knowledge on plant adaptation to nutrient availability and could lead to strategies for improving nitrogen use efficiency in crops, reducing the use of fertilizers and promoting sustainable agriculture.

 
IPS2 benefits from the support of Saclay Plant Sciences-SPS (ANR-17-EUR-0007)
 
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February 28, 3:45 AM
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The Versailles Arabidopsis Stock Center (VASC): original genetic resources exploiting both induced and natural diversity to investigate gene functions and analyze the impact of variation on plant b...

The Versailles Arabidopsis Stock Center (VASC): original genetic resources exploiting both induced and natural diversity to investigate gene functions and analyze the impact of variation on plant b... | Plant Sciences | Scoop.it

https://www.genresj.org/index.php/grj/article/view/genresj.HNCM8135

 

Arabidopsis thaliana is a powerful plant model for functional biology, genetics and, more recently, population genomics. The Versailles Arabidopsis Stock Center collects, produces, preserves, characterizes and distributes various Arabidopsis biological resources. Besides large collections of mutants, including homozygous mutant lines, this stock centre offers numerous natural genotypes collected worldwide, as well as resources resulting from crosses between these variants. Most of the resources are unique and can be useful to a wide range of users, ensuring cumulative characterization of the same material over time. They are accompanied by molecular characterization, genotyping or sequencing data, enabling the analysis of diversity’s impact, particularly on complex plant traits. The collections are made easily and reliably available through an information system comprising a database and a web portal for description and distribution (https://publiclines.versailles.inrae.fr/). Several thousand seed lots are provided each year to the international scientific community.

 

 

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February 18, 5:28 AM
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Identification of novel genes responsible for a pollen killer present in local natural populations of Arabidopsis thaliana (IJPB, SPS)

Identification of novel genes responsible for a pollen killer present in local natural populations of Arabidopsis thaliana (IJPB, SPS) | Plant Sciences | Scoop.it

Author summary "Certain genetic elements are qualified as selfish because they favor their transmission to the progeny during reproduction to the detriment of gametes that do not carry them. These elements are widespread in fungi as well as in plants or in animals, and they are made up of two or even three components, which are specific to each species. Therefore, they must be studied on a case-by-case basis. Moreover, understanding how they appear and propagate in local populations remains a major issue in evolutionary biology. Here we have characterized, in the model plant Arabidopsis, the three genes involved in such an element, called a pollen killer. This pollen killer targets the mitochondria to cause the death of pollen grains that do not carry it. We investigated the three genes in several hundred genotypes collected worldwide, giving us a global view of their diversity at the species level. We also found that some French local populations contain both sensitive and killer plants, which constitutes an invaluable resource for studying the evolution of a pollen killer in the wild".

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January 28, 3:54 AM
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A few places still available for the workshop "Plant Science in the Anthropocene" (PLANT) (24 March - 4 April, Paris-Saclay)!

A few places still available for the workshop "Plant Science in the Anthropocene" (PLANT) (24 March - 4 April, Paris-Saclay)! | Plant Sciences | Scoop.it

The "Plant science in the Anthropocene" (PLANT) workshop will take place from March 24th to April 4th 2025 at University Paris-Saclay. https://eng-saclay-plant-sciences.hub.inrae.fr/events/workshop-institut-pascal


This 2-week workshop will address key challenges for the international Plant Science community, from basic sciences to socio-economic and environmental aspects including climate change. It will gather about 100 international scientists (including 40 speakers).

 

The program will focus on three themes:
- Theme I: "Frontiers in Plant Science " (March 24-25-26)
- Theme II: “Feeding the planet: roles for Plant Science" (March 27-28-31 and April 1)
- Theme III: "Plants as factories (April 2-3-4)

 
Each of these themes will also cover cross-cutting issues: training, innovation and awareness-raising activities.


Mornings will consist mainly of presentations by about 40 senior scientists, who will provide their vision of how to rise to those challenges, while the afternoon sessions will be devoted principally to brainstorming across generations on selected topics. This workshop will thus require input from all participants, the goals being the emergence of consensus community opinions and the specification of paths to success for several major challenges, be they at the level of training the next generation, guiding deciders of public policies, or connecting with the wider public on the importance of plant sciences in the Anthropocene. All these challenges are of high complexity and depend on several disciplines. Thus, beyond plant biologists and geneticists, some participants will come from agronomy, ecology, social and environmental sciences, economics, and also from chemical, physical and computational sciences.

To apply before February 17th : https://indico.ijclab.in2p3.fr/event/10763/

Admission is restricted because of capacity constraints and the need to have the brainstorming sessions be effective. There are no registration fees and lunches and coffee breaks will be provided.

Participants must hold a PhD


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January 25, 1:44 PM
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Isabelle Litrico, nouvelle directrice scientifique Agriculture d’INRAE 

Isabelle Litrico, nouvelle directrice scientifique Agriculture d’INRAE  | Plant Sciences | Scoop.it
Après avoir été cheffe du département scientifique Biologie et amélioration des plantes de 2020 à 2024, Isabelle Litrico est désormais directrice scientifique Agriculture d’INRAE. Une fonction qu’elle embrasse avec conviction et goût grâce à un parcours conséquent à l’interface de nombreuses disciplines, en relation avec de nombreux partenaires.
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January 2, 5:38 AM
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Saclay Plant Sciences wish you a Happy New Year 2025!

Saclay Plant Sciences wish you a Happy New Year 2025! | Plant Sciences | Scoop.it
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December 10, 2024 11:39 AM
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The evolution of interdependency between symbiotic organisms by neutral evolution - Marc-André Selosse - SPS Webinar and video

The evolution of interdependency between symbiotic organisms by neutral evolution - Marc-André Selosse - SPS Webinar and video | Plant Sciences | Scoop.it

Symbiosis evolution is often viewed as a progress, with emergence of new adaptive properties. However, symbiosis also enhances the interdependence between partners. I describe several such interdependences, and emphasize that they arise without emergence of new property. Generally, when two partners permanently interact, a mutation in one partner can be complemented by the other. Independency is then lost without any positive selection, in a neutral evolution. The accumulation of such steps makes the reversion to independency unlikely, and drives interdependency in symbiosis. 

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December 3, 2024 3:54 AM
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 Workshop  "Plant science in the Anthropocene" (PLANT), March 24th to April 4th 2025 at University Paris-Saclay, deadline for applications 17th of December

 Workshop  "Plant science in the Anthropocene" (PLANT), March 24th to April 4th 2025 at University Paris-Saclay, deadline for applications 17th of December | Plant Sciences | Scoop.it

We are pleased to announce that the "Plant science in the Anthropocene" (PLANT) workshop will take place March 24th to April 4th 2025 at University Paris-Saclay. It will address key challenges from basic sciences to socio-economic and environmental issues, including climate change. 
https://eng-saclay-plant-sciences.hub.inrae.fr/events/workshop-institut-pascal


The deadline for applying is December 17th.


The "PLant science in the ANThropocene" (PLANT) workshop will run from March 24 to April 4, 2025 at the Institut Pascal of the University Paris-Saclay (campus about 25 km south of Paris).

This 2-week workshop will address key challenges for the international Plant Science community, from basic sciences to socio-economic and environmental aspects including climate change. It will gather about 60 international scientists. The attendance will mix high stature senior scientists, together with numerous younger ones.

The program will focus on three themes:
- Theme I: "Frontiers in Plant Science fundamental research" (March 24-25-26)
- Theme II: “Feeding the planet: roles for Plant Science and associated socio-economic challenges" (March 27-28-31 and April 1)
- Theme III: "Plants as factories: from chemical compounds to mitigating climate change” (April 2-3-4)

Mornings will consist mainly of presentations by about 20 senior scientists, who will provide their vision of how to rise to those challenges, while the afternoon sessions will be devoted principally to brainstorming across generations on selected topics. This workshop will thus require input from all participants, the goals being the emergence of consensus community opinions and the specification of paths to success for several major challenges, be they at the level of training the next generation, guiding deciders of public policies, or connecting with the wider public on the importance of plant sciences in the Anthropocene. All these challenges are of high complexity and depend on several disciplines. Thus, beyond plant biologists and geneticists, some participants will come from agronomy, ecology, social and environmental sciences, economics, and also from chemical, physical and computational sciences.

Syntheses in the form of opinion papers will be drafted for publication.

APPLICATIONS ARE OPEN FOR PARTICIPATION IN THIS WORKSHOP

Applications deadline: Tuesday December 17, midnight

To know more and apply : https://indico.ijclab.in2p3.fr/event/10763/

Admission is restricted because of capacity constraints and the need to have the brainstorming sessions be effective. There are no registration fees and lunches and coffee breaks will be provided.

Participants must hold a PhD


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