1/ New paper out in ISME Communications now in full version. Bacteria rarely live alone in nature, so we ran a 6-month evolution experiment asking what happens when species are forced to share the same biofilm. Turns out, company changes everything. 🧵 doi.org/10.1093/isme...

Mixed-species interactions constrain diversification and shape biofilm evolution

Abstract. Experimental evolution provides a powerful framework for dissecting how ecological interactions shape adaptive trajectories. Here, we evolved Kle

doi.org

À l’INRS, la professeure Geneviève Lajoie explore une piste prometteuse : la lutte biologique par le microbiote des plantes. Son équipe étudie notamment comment le microbiote des plants de tomates réagit aux attaques d’insectes ravageurs.

Geneviève Lajoie : Comment sauver nos récoltes des insectes envahissants?

Chaque année, dans le monde, un nombre croissant de récoltes sont endommagées ou perdues en raison des insectes envahissants. En plus de représenter une menace réelle pour la sécurité alimentaire cett...

inrs.ca

Pls share: We have a new position for an Assistant Professor of Evolutionary Biology at UNLV. tinyurl.com/4uhpav4j

Assistant Professor in Evolutionary Biology, School of Life Sciences [R0153361]

The University of Nevada, Las Vegas (UNLV) appreciates your interest in employment. We ask that you keep in mind the following when completing your application: Once you start the application process ...

tinyurl.com

Lab preprint! Zichu Yang, Anvita Billa, and Adi Desai systematically studied the DNA-binding domain of the quorum sensing transcription factor LasR. A collaboration with Matt Parsek

bioRxiv Microbiology@biorxiv-microbiol.bsky.social · 2mo ago

Analysis of the DNA-binding domain of the Pseudomonas aeruginosa quorum sensing transcription factor LasR https://www.biorxiv.org/content/10.64898/2026.08.12.744480v1

Le labo de Jean-Philippe Bellenger UdS est à la recherche stagiaire postdoctoral pour étudier les champignons en milieu aquatique. Jean-Philippe Bellenger’s lab at UdS is seeking a postdoctoral fellow to study fungi in aquatic environments. 🍄🐠 🖱️ centreseve.recherche.usherbrooke.ca/offre-de-pro...

Le labo de Antoine Zboralski (IRBV) recherche étudiant au doctorat pour un projet sur les bactérie comme alternative aux pesticides. Antoine Zboralski's lab (IRBV) seeking for PhD student to work on bacteria as alternative to pesticides 🖱️⬇️🌱 centreseve.recherche.usherbrooke.ca/offre-de-pro...

Excellent dossier de @quebecscience.bsky.social sur l'agriculture durable. Le travail de certains de nos membres Centre SÈVE est mis en valeur: Maxime Paré, Tagnon Missihoun et @dezieleric.bsky.social ! 🌱 🧪 www.quebecscience.qc.ca/partenariat/...

Cultiver autrement : en chemin vers une agriculture durable

Préparer l’agriculture de demain

quebecscience.qc.ca

we have this new paper out. Congratulations to my amazing research associate @mariecg.bsky.social for the great work! doi.org/10.1128/aem....

Cranberry juice potentiates sensitivity of uropathogenic Escherichia coli (UPEC) strains to fosfomycin and decreases occurrence of spontaneous resistance | Applied and Environmental Microbiology

Antimicrobial resistance is a growing threat to public health, and new strategies are needed to preserve the activity of existing antibiotics. This study reveals that cranberry juice, a widely consume...

doi.org

Félicitations aux 3 équipes de l’INRS qui ont obtenu un financement majeur du Fonds d'innovation de la Canada Foundation for Innovation et du gouvernement du Québec :

Un financement de 14 M$ pour accélérer l’innovation durable à l’INRS

La FCI soutient trois projets d’infrastructure qui répondent aux défis scientifiques et sociétaux actuels.

inrs.ca

How do you react when your favorite microbe is renamed by taxonomists who are completely outside your field—and who ignore the community that actually works with it? Here is our clear answer re the case of Pseudomonas putida KT2440 👉🏻 journals.asm.org/doi/10.1128/...

The disputed identity of Pseudomonas putida KT2440: when taxonomists rename your favorite microbe | mBio

Names matter; they are not mere labels. They operate as anchors of memory, social coordinates, and references of collective identity. When a name becomes established through long-term use and broad ad...

journals.asm.org

Closing out my year with a journal editor shocker 🧵 Checking new manuscripts today I reviewed a paper attributing 2 papers to me I did not write. A daft thing for an author to do of course. But intrigued I web searched up one of the titles and that's when it got real weird...

New in JB: Trottier, Déziel et al. show that despite the conservation of the PqsE sequence of P. aeruginosa and some key conserved functions, including and essential role for HAQ biosynthesis, this protein has different impacts across strains of Pa. journals.asm.org/doi/10.1128/...

New lab paper! Andrew Frando describes how MexT alters the quorum sensing cascade in P. aeruginosa. /1 With Nicole Smalley; two undergraduates, Jamal Omar and Bobby Parsek; and @dezieleric.bsky.social, @mariecg.bsky.social, and Mylène Trottier at INRS in Montreal journals.asm.org/doi/10.1128/...

Modulation of the Pseudomonas aeruginosa quorum sensing cascade by MexT-regulated factors | mBio

Bacteria interact with both abiotic and biotic factors in their environment. Quorum sensing (QS) is one mechanism that bacteria use to communicate with other bacteria and coordinate behaviors in the p...

journals.asm.org

www.biorxiv.org/content/10.1... #microsky

Pseudomonas aeruginosa lasR is a keystone gene in polymicrobial cultures

The airways of people with cystic fibrosis (CF) are often co-infected by Pseudomonas aeruginosa and a variety of other co-habiting microbes; the infections are polymicrobial. P. aeruginosa isolates fr...

biorxiv.org

Plus que 10 jours avant la fin des soumissions des résumés pour le BiSP qui aura lieu le 5-6 novembre 2025 à l'Université de Sherbrooke. Nous aurons aussi la chance de recevoir @lalouxlab.bsky.social et @bjesseshapiro.bsky.social Partagez! @micrhub.bsky.social event.fourwaves.com/bispmicrhubs...

BiSP - MicrHub

Fourwaves - BiSP - MicrHub

event.fourwaves.com

What to know more about #biosurfactants but do not know where to start? We are publishing a «Primer» on the topic! Great contribution from PhD student Maude Dagenais Roy www.microbiologyresearch.org/content/jour... Thanks to @microbiologysociety.org

Microbial Primer: Biosurfactants – the ABCs of microbial surface-active metabolites

Microbial surfactants (biosurfactants) are low-molecular-weight amphiphilic secondary metabolites synthesized by a wide range of micro-organisms, including bacteria, yeasts and fungi. These compounds ...

microbiologyresearch.org

The 3rd International #Biosurfactants Conference will take place in Aachen, Germany September 8 -10 2025. Academia and industry will discuss the latest developments, and share cutting-edge insight in this exciting field of microbial #biotechnology #microsky biosurfactants.uni-hohenheim.de/en

🌿Un projet scientifique innovant au Carré Laval L'INRS, @villedelavalqc.bsky.social, @genomequebec.bsky.social @fondsrechercheqc.bsky.social annoncent le lancement d'un projet unique sur le #microbiome urbain et son impact sur la santé globale. #recherche En savoir plus 👉 inrs.ca/actualites/l...

Great new resource for Quorum sensing enthusiasts: a database linking LuxI-type synthases to their AHLs journals.asm.org/doi/full/10....

RefAHL: a curated quorum sensing reference linking diverse LuxI-type signal synthases with their acyl-homoserine lactone products | Microbiology Resource Announcements

Many bacteria use acyl-homoserine lactone (AHL) signal compounds, produced by the LuxI-family of synthases and detected by the LuxR-family of transcriptional regulators, in cell density-dependent gene...

journals.asm.org

New work from the lab! Sometimes going beyond prototypical strains such as PAO1 or PA14 tells a more complex and nuanced story.

bioRxiv Microbiology@biorxiv-microbiol.bsky.social · last yr.

PqsE is conserved and functionally relevant in Pseudomonas aeruginosa https://www.biorxiv.org/content/10.1101/2025.05.16.654539v1

PqsE is conserved and functionally relevant in Pseudomonas aeruginosa https://www.biorxiv.org/content/10.1101/2025.05.16.654539v1

I got hit by some rather sudden and extreme financial hardship so if anyone is in need of remote wetlab contract research, strictly BSL1, do let me know. Currently scrambling for gigs. Plant, Bacterial, Archaeal Non-model Bioeng Custom Lab Hardware Turn Key Genetic Design Please repost for reach 💚

www.quantamagazine.org/how-a-biofil...

Au total, les professeurs Eric Déziel et Étienne Yergeau reçoivent un soutien financier de 2,8 M$ du Programme des chaires de recherche du Canada qui appuie des chercheuses et chercheurs parmi les plus prometteurs et les plus accomplis au monde. inrs.ca/actualites/d...

Deux nouvelles chaires de recherche en microbiologie à l’INRS

Deux nouvelles chaires de recherche du Canada pour étudier les interactions microbiennes et leur impact sur la santé et l’environnement.

inrs.ca

Colony morphotype variation in Burkholderia: implications for success of applications and therapeutics #JBacteriol by @pmlcoulon.bsky.social et al journals.asm.org/doi/10.1128/...

Colony morphotype variation in Burkholderia: implications for success of applications and therapeutics | Journal of Bacteriology

The Burkholderia genus, comprising over 90 species (1, 2), is a member of the β-proteobacteria subphylum and is widely distributed in various environments such as the atmosphere, soil, water, plant rh...

journals.asm.org

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!

New in JB: Coulon, Deziel, et al. explore quorum sensing and DNA methylation in phase variation in Burkholderia clinical isolates. journals.asm.org/doi/10.1128/... @asm.org #JBacteriology

Le professeur Éric Déziel fait figure de pionnier dans l’étude des #biosurfactants. Avec son équipe, il a mis au point une méthode innovante d'évolution dirigée, inspirée de la sélection naturelle, pour améliorer leur production et rendre leur utilisation plus accessible. inrs.ca/actualites/l...

La sélection naturelle au service de produits nettoyants plus écologiques ?

Une étude de l'INRS sur la sélection naturelle ouvre la voie à des avancées très prometteuses dans le secteur des biosurfactants

inrs.ca