EPP1 is an ancestral component of the plant Common Symbiosis Pathway The success of plants on land has been enabled by mutualistic intracellular associations with microbes for 450 million years ([Delaux and Schornack 2021][1]). Because of their intracellular nature, th...

www.biorxiv.org/content/10.1...
and
www.biorxiv.org/content/10.1...

Two papers to tell us more about mysterious EPP1, a protein required for symbiosis. Well done @tatiana-vernie.bsky.social and all co-authors.

Congrats !

A Novel Positive Regulator of the Early Stages of Root Nodule Symbiosis Identified by Phosphoproteomics Abstract. Signals and signaling pathways underlying the symbiosis between legumes and rhizobia have been studied extensively over the past decades. In a pr

For more information: academic.oup.com/pcp/article/...
nph.onlinelibrary.wiley.com/doi/10.1111/...

Yes, fungi do sense the plant too, especially through strigolactones which act as signals to trigger fungal growth and branching. And this hormone is conserved in Bryophytes (see Kodama et al. 2022 in Nature Comm) !

And thank you so much, I really appreciate it! 😊

@madelinebright.bsky.social
No worries, curiosity is always welcome! 😊

AM is widespread among all major groups of land plants except mosses, so it is common for bryophytes too!

As for lipid feeding, lipids are a carbon source, like sugars, that the plant provides to the fungus as "food" 🍄

Many thanks to my great and many colleagues ✨
@malick-mbengue.bsky.social @pierremarcdelaux.bsky.social @melaniekrich.bsky.social
@davidlandry1.bsky.social
@kellerjeanphd.bsky.social
Sabine Grat
Benoit Lefebvre
Mathilde Ouradou
Sébastien Fort
(6/6)

Are other signals involved?! 🤔 A fun question for the next wave (5/6)

COs and LCOs signalling also depends on LYR, which seems to be their true receptor. However, lyr mutants establish perfect arbuscular mycorrhiza… 🤯 (4/6)

LYKa is required for chito- (COs) and lipochito-oligosaccharides (LCOs) signalling in M. paleacea, but it is not alone! (3/6)

We demonstrate that the LysM-RLK LYKa is essential for AM in Marchantia paleacea, thus an ancestral function given its orthologues requirement for AM in angiosperms ✅ (2/6)

A plant Lysin Motif Receptor-Like Kinase plays an ancestral function in mycorrhiza | PNAS Arbuscular mycorrhiza (AM) with soilborne Glomeromycota fungi was pivotal in the conquest of land by plants almost half a billion years ago. In flo...

I’m very happy that my main PhD work, under the supervision of @malick-mbengue.bsky.social, found a home in @pnas.org
Two days before my PhD defence! 🎉 (1/6)

Dr Juliette Teyssendier de La Serve

Congratulations to Dr Juliette Teyssendier de La Serve for her brilliant thesis defense at IPS2 on March 7, 2025! Her research work under the direction of Dr Florian Frugier and Dr Nicolas Frei Dit Frey is a great success. We wish her all the best for her future career.
#PlantScience

Comment les plantes ont-elles pris le pouvoir ? Dans les dix dernières minutes de l'émission, La lutte enchantée de Camille Crosnier, la Une des médias, par Hervé Poirier d'Epsiloon, et vos messages laissés sur le répondeur de l'émission.

www.radiofrance.fr/franceinter/...

Pour les francophones!

Congrats ✨

The Marchantia polymorpha pangenome reveals ancient mechanisms of plant adaptation to the environment - Nature Genetics Pangenome analyses of 133 wild accessions of the model bryophyte Marchantia polymorpha identify adaptive features and provide insights into the mechanisms of plant adaptation to the terrestrial enviro...

I’m super happy to have a great part of my PhD work (under the wonderful supervision of C. Libourel @pierremarcdelaux.bsky.social & @maximebonhomme.bsky.social) now out in @naturegenet.bsky.social !
Here’s a little thread (1/18)
www.nature.com/articles/s41...

LysM-RLK plays an ancestral symbiotic function in plants Arbuscular mycorrhiza (AM) with soilborne Glomeromycota fungi was pivotal in the conquest of land by plants almost half a billion years ago. In flowering plants, it is hypothesised that AM is initiate...

Proud to have my updated work available on Biorxiv : ancestral function of LysM-RLK for AM establishment
@lrsv-toulouse.bsky.social
@malick-mbengue.bsky.social @pierremarcdelaux.bsky.social @melaniekrich.bsky.social
@kellerjeanphd.bsky.social
www.biorxiv.org/content/10.1...