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pbbeauregard.bsky.social

@pbbeauregard.bsky.social
435 followers 152 following 17 posts

Full professor, Biologie at Université Sherbrooke, Maman de 2, love all things bacteria, geek lvl 20, pour la science fondamentale et collaborative

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Reposted by @pbbeauregard.bsky.social
Marco Festa-Bianchet 🇨🇦 @marcofesta.bsky.social · 16/03/2026
Neither Conservative nor Liberal Canadian gov'ts understand how university research works. They think that a few top people are key, don't provide increased funding once these hotshots move in, so that more proposals are chasing the same $. Lots of 🇨🇦 talent unfunded and unseen. 🧪
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 26/11/2025
Me, 7 graduate students, 1 postdoc and 3h per week of a research professional. All students know they have to chip in for lab tasks, but it works well.
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Reposted by @pbbeauregard.bsky.social
Fabrice Jean-Pierre @fabricejpierre.bsky.social · 17/11/2025
We're hiring! My dept. is looking for a candidate with a research program focusing on plant systems. All areas of molecular and cellular biology research will be considered. Not sure if you'd fit? Reach out to me. Please share! #microsky
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 05/11/2025
C’est un départ pour le BiSP/Micrhub! Plus de 150 participants pour jaser de bactériologie en français. @vincentlamoureux.bsky.social ouvre le bal avec ses résultats de post doctorat en métabolomique! @micrhub.bsky.social
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 16/09/2025
De très belles journées de science en français s'en viennent!
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Reposted by @pbbeauregard.bsky.social
Prof. Isabelle Laforest-Lapointe @ilafores.bsky.social · 24/07/2025
Offre de MSc avec @pbbeauregard.bsky.social Mirella Aoun et moi #agriculture #durable #écologie #microbienne Open MSc position #sustainable #agriculture #microbial #ecology Un partenariat entre Bishop's University & @usherbrooke.bsky.social C'est le temps d'appliquer! 🕐🤩 Time to apply! 🕐🤩
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 22/07/2025
My vintage protocol uses the sodium salt for glutamic acid, and the pH of the MOPS stock solution is adjusted with NaOH. So, the final medium contains a mix of both. We also recently observed that the exclusive presence of K vs Na changed the phenotype of the colony.
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 08/04/2025
Nous aurons le plaisir d'accueillir Géraldine Laloux (UCLouvain) et Jesse Shapiro (Université McGill), et il y aura de multiples possibilités de présentations et d'affiches. Suivez @micrhub.bsky.social pour des mises à jour, et l'inscription est ici : event.fourwaves.com/fr/bispmicrh...
event.fourwaves.com
BiSP - MicrHub
Fourwaves - BiSP - MicrHub
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 08/04/2025
Réservez les dates! Le BiSP (bactériologie intégrative, symbiose et pathogénèse) aura lieu le 5 et 6 novembre à l'Université de Sherbrooke - un événement qui sera en "symbiose" avec le MicrHub, rencontre annuelle de tous les microbiologistes de Sherbrooke. À ne pas manquer!
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Reposted by @pbbeauregard.bsky.social
Prof. Isabelle Laforest-Lapointe @ilafores.bsky.social · 31/03/2025
Le groupe de Biologie Moléculaire du Département de Biologie recrute! Une 4e embauche en 2 ans, joignez-vous à une équipe jeune, à un département dynamique, au sein d'une institution exceptionnelle, dans un pays démocratique. www.usherbrooke.ca/emplois/offr...
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 09/02/2025
Pour pallier à mon anxiété (merci Trump) je cuisine. Donc aujourd’hui j’ai fait des “baked oats cup”, des chips pita au zaatar, un pain au levain, une soupe poulet nouille pour les lunch et des brownies. Ça va vaguement mieux?
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 05/12/2024
Interesting! I have never seen that before. No idea what/why it is different!!
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 25/11/2024
We use Na-glutamate but I am unsure if it makes a difference. This could help : journals.asm.org/doi/10.1128/... My take is that the brown pigment is this spore-associated thing, and it depends on pulcherrimin since pulch is required for correct colony development. Some pulch is likely there too.
journals.asm.org
CotA of Bacillus subtilis Is a Copper-Dependent Laccase | Journal of Bacteriology
ABSTRACT The spore coat protein CotA of Bacillus subtilisdisplays similarities with multicopper oxidases, including manganese oxidases and laccases. B. subtilis is able to oxidize manganese, but neither CotA nor other sporulation proteins are involved. We ...
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 22/11/2024
Or it could be partially complexed pulcherriminic acid (so a bit of pulcherrimin + free pulcherriminic acid) - pulcherriminic acid is soluble.
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 22/11/2024
To me, left is typical pulcherrimin, red and insoluble. Right is a "brown pigment associated to spore" (no idea what it is exactly) that we observe sometimes (our colonies on MSgg secrete red pigment). It could be dependent of Fe and pulcherrimin because both are required for B. subtilis biofilm.
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 16/11/2024
#proudPI #alittletirednow
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 16/11/2024
Busy week! Paula did an excellent job presenting her project (in her third langage - french!) to the Centre Sève on thursday, on Bacillus species helping or not N fixation. Then, JS, Sandrine and I talked about our research at La nuit des chercheurs hosted by the Science museum of Sherbrooke.
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 14/11/2024
Toujours un plaisir d’aller discuter des plantes sous tous leurs angles aux Journées du #CentreSEVE !
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Reposted by @pbbeauregard.bsky.social
Peter Moffett @moffettpeter.bsky.social · 14/11/2024
Starting off the annual #CentreSEVE meeting with @balachaudhary.bsky.social on mycorrhizal dispersal
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 11/11/2024
Congrat Julie for your article, great work!
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 11/11/2024
In presence of high N, B. subtilis negatively impacts A. vinelandii growth; in low N, A. vinelandii feed N to B. subtilis, which in return strongly stimulates Azoto N-fixing activity. Another great collaboration with my chemist colleague JP Bellenger!
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pbbeauregard.bsky.social @pbbeauregard.bsky.social · 11/11/2024
New article alert! Here, PhD student Julie Leroux elegantly shows how N availability influences the interaction between a diazotroph, Azotobacter vinelandii, and our favorite PGPR Bacillus subtilis. journals.asm.org/doi/10.1128/...
journals.asm.org
Azotobacter vinelandii N2 fixation increases in co-culture with the PGPR Bacillus subtilis in a nitrogen concentration-dependent manner | Applied and Environmental Microbiology
Reducing inputs of chemical N fertilizers is essential to develop a more sustainable agriculture. The stimulation of biological nitrogen fixation by N2 fixers in multispecies cultures, here the plant growth-promoting rhizobacteria Azotobacter vinelandii ...
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