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Reposted by Eric Déziel

Emmanuele Severi @emmseveri.bsky.social · 2d

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...

www.biorxiv.org

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Reposted by Eric Déziel

George O'Toole (he/him/his) @geiselbiofilm.bsky.social · 6d

New in JB: Déraspe, Roy et al. perform a comparative genomics study of the PA7-clade of P. aeruginosa - now recognized as a distinct species, Pseudomonas paraeruginosa. This analysis revealed 2 sub-clades, the lack of T3SS & multiresistance.
journals.asm.org/doi/10.1128/...
@asm.org #JBacteriology

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Reposted by Eric Déziel

Fabrice Jean-Pierre @fabricejpierre.bsky.social · 9d

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

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Reposted by Eric Déziel

George O'Toole (he/him/his) @geiselbiofilm.bsky.social · 10d

Please share - an Assist Prof position in microbiology

employmentopportunities.umb.edu/mob/cw/en-us...

@asm.org

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Reposted by Eric Déziel

Adam R Houston @healthlawadamh.bsky.social · 21d

Interesting: Canada's updated antimicrobial resistance pathogen prioritization list. 🦠📜
"Canada’s 2025 #AMR priority pathogens: Evidence-based ranking and public health implications"
journals.plos.org/plosone/arti...

Screenshot of Table 1 from the linked article, listing the AMR priority pathogens

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Reposted by Eric Déziel

Ákos T Kovács @evolvedbiofilm.bsky.social · 21d

Volatile organic compounds from Bacillus velezensis FZB42 remodel Arabidopsis root architecture by an auxin-dependent mechanism

-in Plant Cell Reports (Springer)

link.springer.com/article/10.1...

Volatile organic compounds from Bacillus velezensis FZB42 remodel Arabidopsis root architecture by an auxin-dependent mechanism - Plant Cell Reports

Key message Volatile organic compounds produced by plant growth-promoting rhizobacteria promote lateral root development by modulating the auxin signaling pathway in Arabidopsis thaliana, thereby remo...

link.springer.com

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Eric Déziel @dezieleric.bsky.social · 26d

www.the-scientist.com/lasker-award...

Lasker Award for Uncovering Spatial Organization in Bacterial Cells

Lucy Shapiro received this year’s Lasker Special Achievement Award for her discovery of how bacteria use genetic circuits to encode three-dimensional cellular life.

www.the-scientist.com

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Reposted by Eric Déziel

buhaririinstitute.bsky.social @buhaririinstitute.bsky.social · Sep 8

How do bacteria organize? 🦠 @bostonu.bsky.social researchers reveal in Cell Systems that colony shape, metabolism & nutrients drive growth, diversity & striking rings. Learn more: spr.ly/63321AGQbb

@dsegre.bsky.social

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Reposted by Eric Déziel

Tiffany Zarrella @tiffzarrella.bsky.social · Sep 6

Pseudomonas aeruginosa senses exopolysaccharide trails using type IV pili and adhesins during biofilm formation by O'Toole, Parsek, & Wong groups www.nature.com/articles/s41...

Pseudomonas aeruginosa senses exopolysaccharide trails using type IV pili and adhesins during biofilm formation - Nature Microbiology

Opposing forces generated by exopolysaccharide trail binding versus type IV pilus retraction generate a high cyclic diGMP–high cyclic AMP state in Pseudomonas aeruginosa that promotes social motility.

www.nature.com

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Reposted by Eric Déziel

apreston243.bsky.social @apreston243.bsky.social · Sep 5

New Primer alert! And now with the correct link, apologies @dezieleric.bsky.social! Microbial Primer on the essentials of biosurfactants. @microbiologysociety.org www.microbiologyresearch.org/content/jour...

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 ...

www.microbiologyresearch.org

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Eric Déziel @dezieleric.bsky.social · Sep 5

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 ...

www.microbiologyresearch.org

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Eric Déziel @dezieleric.bsky.social · Sep 5

Thank you @apreston243.bsky.social ! And here is the correct link www.microbiologyresearch.org/content/jour...

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 ...

www.microbiologyresearch.org

Reposted by Eric Déziel

Jessica Blair @jessicamablair.bsky.social · Sep 4

Assistant Prof post in bacterial genomics @unibirmingham.bsky.social Come and join us!!

@imibirmingham.bsky.social
www.jobs.ac.uk/job/DOO184/a...

Assistant Professor (Research and Education) in Bacterial Genomics at University of Birmingham

Looking for a new job opportunity in academia? Check out this job opening for a Assistant Professor (Research and Education) in Bacterial Genomics on jobs.ac.uk!

www.jobs.ac.uk

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Reposted by Eric Déziel

STCmicrobeblog @stcmicrobeblog.bsky.social · Aug 21

schaechter.asmblog.org/schaechter/2...
#MicroSky

Elio (1928-2025)

by The STC Team — Losing a close friend always saddens one deeply, regardless of age. Losing a person who has so immensely influenced our worldview through his guidance and example makes the sadness e...

schaechter.asmblog.org

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Reposted by Eric Déziel

STCmicrobeblog @stcmicrobeblog.bsky.social · Aug 11

fellow microbiologists take note👇
this is comparable to closing down ATCC. go figure!
#MicroSky

Dr Sian Gramates @drglam.bsky.social · Aug 11

I just got the notice that all the FlyBase people at Harvard, including me, will be laid off on October 12. I'm devastated.

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Reposted by Eric Déziel

Dr Sian Gramates @drglam.bsky.social · Aug 11

I just got the notice that all the FlyBase people at Harvard, including me, will be laid off on October 12. I'm devastated.

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bioRxiv Microbiology @biorxiv-microbiol.bsky.social · Jul 30

A family of linear plasmid phages that detect a quorum-sensing autoinducer exists in multiple bacterial species https://www.biorxiv.org/content/10.1101/2025.07.30.667625v1

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Reposted by Eric Déziel

George O'Toole (he/him/his) @geiselbiofilm.bsky.social · Jul 29

Pls share: Kenyon College is looking for "a broadly trained microbiologist whose research focuses on prokaryotes."

You can see the full ad here:
careers.pageuppeople.com/695/cw/en-us...

Kenyon College - Details - Assistant Professor of Biology (Tenure-Track)

careers.pageuppeople.com

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Eric Déziel @dezieleric.bsky.social · Jul 8

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

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Reposted by Eric Déziel

Institut Pasteur | 130 years of biomedical research @pasteur.fr · Jun 21

🎶 Straight from the Lab to the Mic: when a Pasteur scientist turns her thesis into a rap 🎶
#FeteDeLaMusique

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Eric Déziel @dezieleric.bsky.social · May 26

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

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Eric Déziel @dezieleric.bsky.social · May 18

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 · May 17

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

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Reposted by Eric Déziel

Cameron Thrash @jcamthrash.bsky.social · May 15

BONCAT-Live for isolation and cultivation of active environmental bacteria www.biorxiv.org/content/10.1... #jcampubs

BONCAT-Live for isolation and cultivation of active environmental bacteria

In diverse environments, microbes drive a myriad of processes, from geochemical and nutrient cycling to interspecies interactions, including in association with plants and animals. Their physiological...

www.biorxiv.org

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Reposted by Eric Déziel

fillouxlab.bsky.social @fillouxlab.bsky.social · May 12

A natural compound, echinacoside, controls #c-di-GMP levels in #Pseudomonas aeruginosa via SiaD and is proven effective in combinatorial therapy with tobramycin. No doubt targeting c-di-GMP pathways is a nice path to tackle biofilm and chronic infections. See at www.nature.com/articles/s41...

Echinacoside reduces intracellular c-di-GMP levels and potentiates tobramycin activity against Pseudomonas aeruginosa biofilm aggregates - npj Biofilms and Microbiomes

npj Biofilms and Microbiomes - Echinacoside reduces intracellular c-di-GMP levels and potentiates tobramycin activity against Pseudomonas aeruginosa biofilm aggregates

www.nature.com

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Reposted by Eric Déziel

ASM @asm.org · May 12

Microbiology Monday: To swim or to swarm? 🦠While c-di-GMP inhibits swimming to promote biofilm formation in E. coli, elevated levels of the secondary message molecule trigger production of a surfactant (colanic acid) that aids swarming. #mBio: asm.social/2pm

Rescue of swarming in ΔdgcO by addition of indicated concentrations of CA extract from ΔwaaF.

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