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Albin Teulet

@albinteulet.bsky.social

Researcher at @phimresearch.bsky.social & @ird-fr.bsky.social. Love Science, #PlantScience 🌿/Microbe🦠 interactions and Microbial effectors. PhD

14 Posts356 Follower329 Folgt
Tatiana Giraud@tatianagiraud.bsky.social · 8mo ago

Notre tribune de scientifiques pour alerter sur les dangers de la nouvelle loi d'urgence pour l'agriculture: la science montre que l'urgence est au contraire de transformer le système agricole pour préserver notre santé, la fertilité des sols, une eau disponible et non polluée, et la biodiversité.

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Jean-Michel Ané@jeanmichelane.bsky.social · last yr.

Outstanding paper ! -> receptor-like cytoplasmic kinase AeRLCK2 mediates Nod-independent rhizobial symbiosis in Aeschynomene legumes | The Plant Cell | Oxford Academic

receptor-like cytoplasmic kinase AeRLCK2 mediates Nod-independent rhizobial symbiosis in Aeschynomene legumes

Many plants interact symbiotically with arbuscular mycorrhizal fungi to enhance inorganic phosphorus uptake, and legumes also develop a nodule symbiosis with rhizobia for nitrogen acquisition. The establishment and functioning of both symbioses rely on a common plant signaling pathway activated by structurally related Myc and Nod factors. Recently, a SPARK receptor-like kinase (RLK)/receptor-like cytoplasmic kinase (RLCK) complex was shown to be essential for arbuscular mycorrhiza formation in both monocot and dicot plants. Here, we show that in Aeschynomene legumes, the RLCK component of this receptor complex has undergone a gene duplication event and mediates a unique nodule symbiosis that is independent of rhizobial Nod factors. In Aeschynomene evenia, AeRLCK2 is crucial for nodule initiation but not for arbuscular mycorrhiza symbiosis. Additionally, AeRLCK2 physically interacts with and is phosphorylated by the cysteine-rich RLK, AeCRK, which is also required for nodulation. This finding uncovers an important molecular mechanism that controls the establishment of nodulation and is associated with Nod-independent symbiosis.

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Jean-Michel Ané@jeanmichelane.bsky.social · last yr.

An NLP-inherited motif confers broad DNA-binding specificity to NIN in root nodule symbiosis | bioRxiv

An NLP-inherited motif confers broad DNA-binding specificity to NIN in root nodule symbiosis

Nitrogen-fixing root nodule symbiosis (RNS) occurs in some eudicots, including legumes, and is regulated by the transcription factor NODULE INCEPTION (NIN), derived from the NIN-LIKE PROTEIN (NLP) family. However, how the NIN protein acquired RNS-specific functions remains unclear. We identify a previously undescribed motif in Lotus japonicus NIN, located downstream of the RWP-RK domain, which we term the FR. This motif broadens the DNA-binding specificity of NIN by stabilizing the RWP-RK dimer interface. nin mutants lacking the FR motif show defective nodulation and impaired nitrogen fixation. Arabidopsis NLP2 carries a NIN-type FR and shares key features with NIN. Furthermore, the NIN-type FR likely originated as early as gymnosperms, suggesting that the molecular feature of NIN for RNS regulation was inherited from ancestral NLPs before RNS emerged.

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Nick Desnoyer@nickdesnoyer.bsky.social · last yr.

Introducing the 1,000 Flower Collection 🧬🌹 I’m creating 1,000 genetically designed flowers each crafted with new colors, patterns, and shapes. Here’s how I’m making it happen… and how you can join me on this journey 🧵(1/7)

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Fantin Mesny@mesny.bsky.social · last yr.

📣 NEW PREPRINT 📝 We identified evolutionary origins of many fungal effectors! We show that fungi secrete lots of antimicrobial proteins, and that some of them were repurposed by plant pathogens for host immune suppression. www.biorxiv.org/content/10.1... cc @teamthomma.bsky.social

Plant-associated fungi co-opt ancient antimicrobials for host manipulation

Evolutionary histories of effector proteins secreted by fungal pathogens to mediate plant colonization remain largely elusive. While most functionally characterized effectors modulate plant immunity, ...

biorxiv.org

Tolga Bozkurt@tolgaboz.bsky.social · last yr.

Plz RT. We are looking for a postdoc to join our collborative project on AI-guided bioengineering of plant immune receptors @tolgaboz.bsky.social and @jiorgoskourelis.bsky.social labs: www.jobs.ac.uk/job/DNV032/r...

Research Associate in Programmable Plant Immunity at Imperial College London

Apply for the Research Associate in Programmable Plant Immunity role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.

jobs.ac.uk

Léa Monge-Waleryszak@lwaleryszak.bsky.social · last yr.

Love uncovering effector virulence strategies! 😀 Our work on PopP2 targeting core components of the PEAT chromatin-remodeling complexes is now out @theplantjournal.bsky.social. doi.org/10.1111/tpj....

Three ARID proteins involved in chromatin remodeling PEAT complexes are targeted by the Ralstonia solanacearum effector PopP2 and contribute to bacterial wilt disease

The Ralstonia solanacearum effector PopP2 is a YopJ family acetyltransferase. PopP2 is known to dampen basal immune responses by acetylating defensive WRKY transcription factors, and probably by targ...

doi.org