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Reposted by Ève Teyssier

Baptiste Castel @baptistebio.bsky.social · 2d

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.

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

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Ève Teyssier @eveteyssier.bsky.social · 7d

Congrats !

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Reposted by Ève Teyssier

Nikolaj Abel @nikolajabel.bsky.social · 7d

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

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

academic.oup.com

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Ève Teyssier @eveteyssier.bsky.social · Jun 12

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! 😊

Ève Teyssier @eveteyssier.bsky.social · Jun 12

@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" 🍄

Ève Teyssier @eveteyssier.bsky.social · Jun 12

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)

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Ève Teyssier @eveteyssier.bsky.social · Jun 12

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

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Ève Teyssier @eveteyssier.bsky.social · Jun 12

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

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Ève Teyssier @eveteyssier.bsky.social · Jun 12

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

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Ève Teyssier @eveteyssier.bsky.social · Jun 12

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)

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Ève Teyssier @eveteyssier.bsky.social · Jun 12

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)

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...

www.pnas.org

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Reposted by Ève Teyssier

Institute of Plant Sciences - Paris-Saclay (IPS2) @ips2parissaclay.bsky.social · Mar 10

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