Dave Baltrus 🦦
@surtlab.bsky.social
7.6K followers 2.9K following 1.3K posts
Professor at UArizona interested in genome rummaging, microbial evolution, and occasional tales about having backyard farm animals. “I’m something of a scientist myself” Baltrus(at)Arizona.edu
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Reposted by Dave Baltrus 🦦
sbarolo.bsky.social
Plant-based nicotine? What’ll they think of next
Poster ad for an e-cigarette claiming “100% Plant-Based Nicotine”
Reposted by Dave Baltrus 🦦
imbernomics.bsky.social
Constant mockery is how we win this.
Reposted by Dave Baltrus 🦦
skryazhi.bsky.social
Dear colleagues!

@davidmccandlish.bsky.social and I are serving as guest editors for the new special issue of GENETICS on fitness landscapes:

doi.org/10.1093/gene...

Submissions are due on March 18, 2026. Please spread the word! And reach out if you have questions.
The Fitness Landscape: A Call for Papers
Ruth Isaacson; The Fitness Landscape: A Call for Papers, Genetics, , iyaf206, https://doi.org/10.1093/genetics/iyaf206
doi.org
Reposted by Dave Baltrus 🦦
uocmicrobiology.bsky.social
UChicago Microbiology is searching for tenured or tenure-track faculty working in host-pathogens interactions, viral and bacterial pathogenesis, and emerging infectious diseases. Come join our vibrant Department! microbiology.uchicago.edu
Apply here apply.interfolio.com/174404
Department of Microbiology | The University of Chicago
microbiology.uchicago.edu
Reposted by Dave Baltrus 🦦
jlw-ecoevo.bsky.social
Stony Brook is hiring an Assistant or Associate Professor in Marine Molecular Ecology (assistant encouraged, molecular broadly defined, includes microbial omics!): apply.interfolio.com/174869
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
Reposted by Dave Baltrus 🦦
Reposted by Dave Baltrus 🦦
denard.bsky.social
I am convinced that we have massively underestimated the impact of substitution reversions on the amount of molecular positive selection that we are able to see. Large populations will readily have reversing mutations readily available, and gene flow will also reintroduce ancestral alleles.
Reposted by Dave Baltrus 🦦
alanmcn1.bsky.social
After being with the journal since its very inception, the time has come for me to step back from Microbial Genomics. This is a wonderful opportunity to have a leadership role in one of the leading journals for microbial genomics research

microbiologysociety.org/news/society...
<i>Microbial Genomics </i> Deputy Editor-in-Chief: Call for Expressions of interest
microbiologysociety.org
Reposted by Dave Baltrus 🦦
aribidopsis.bsky.social
🍀🔬

MSL10 is a high-sensitivity mechanosensor in the tactile sense of the Venus flytrap @natcomms.nature.com from Toyota lab.

www.nature.com/articles/s41...
Reposted by Dave Baltrus 🦦
coereba.bsky.social
I have never been jealous of a Nobel prize winner before….
Reposted by Dave Baltrus 🦦
jebyrnes.bsky.social
Heeeeey #Microbial #Ecology folk! My department has a job opening for a tenure track Microbial Ecologist! Feel free to DM me with questions. Come join our awesome supportive whip-smart & kind crew in the Biology Department of @umassboston.bsky.social! employmentopportunities.umb.edu/boston/en-us...
The ISC - your new home at UMass Boston? The view of Boston Harbor from front of campus
Reposted by Dave Baltrus 🦦
uncultured.carinilab.com
Good opportunity!
nagissa.bsky.social
Interested in life’s co-evolution with planetary environments?
🌎🦠🧪

I'm looking for a postdoc to join my group at #McGill and happy to sponsor applicants for the TSI fellowship.

Please reach out if interested!

academicjobsonline.org/ajo/jobs/30777
McGill University, Trottier Space Institute
Job #AJO30777, Trottier Space Institute Postdoctoral Fellow, Trottier Space Institute, McGill University, Montreal, Quebec, CA
academicjobsonline.org
Reposted by Dave Baltrus 🦦
vivekmutalik.bsky.social
#microsky
nizet.bsky.social
C̳H̳E̳C̳K̳ ̳I̳T̳ ̳O̳U̳T̳

Spectacular atomic force microscopy time course studies from Carolina Borrelli et al. in Nature Microbiology show how polymyxin drugs (like colistin) cause blebbing and shedding of the Gram-negative bacterial outer membrane

It looks almost like the bacilli 🦠 caught smallpox then died
Polymyxin B lethality requires energy-dependent outer membrane disruption - Nature Microbiology
The antibiotic polymyxin B requires bacterial metabolic activity to cause sufficient damage to the outer membrane to access the inner membrane, which it permeabilizes via an energy-independent mechanism to kill the cell.
www.nature.com
Reposted by Dave Baltrus 🦦
pbernalt6ss.bsky.social
Our paper, describing how the T6SSs of P. putida shape the tomato rhizosphere, is now in its final format in @isme-microbes.bsky.social ISME Communications. If you'd like to learn more, here is a thread (1/11) or read the Article doi.org/10.1093/isme....
Reposted by Dave Baltrus 🦦
stevemullis.net
"hand-to-hand combat with antifa every night"
a guy in a frog costume standing facing a line of police and ICE agents in Portland
Reposted by Dave Baltrus 🦦
copenhaverlab.bsky.social
The @uncchapelhill.bsky.social Department of Biology is searching for tenure-track Assistant Professor in Plant Molecular Biology. Chapel Hill is a wonderful place and Biology is an amazing group of people. To apply, see:
unc.peopleadmin.com/postings/307...
surtlab.bsky.social
Here’s published version of our manuscript using GWAS to investigate tailocin sensitivity in Pseudomonas syringae. TL:DR pretty clear LPS is tailocin receptor but also that P.syringae often completely swaps out its entire O antigen biosynth pathway w/ recombination

academic.oup.com/g3journal/ad...
Genomic correlates of tailocin sensitivity in Pseudomonas syringae
Abstract. Phage-derived bacteriocins, also referred to as tailocins, are structures encoded by bacterial genomes and deployed into the extracellular enviro
academic.oup.com
Reposted by Dave Baltrus 🦦
brockhurstlab.bsky.social
New preprint!

Ever wondered why only a fraction of genomes encode CRISPR immunity? 🧬 🦠

Turns out CRISPR is rarely beneficial against virulent phages, being most beneficial against those for which resistance mutations are rare!

An epic effort by Rosanna Wright

www.biorxiv.org/content/10.1...
Resistance mutation supply modulates the benefit of CRISPR immunity against virulent phages
Only a fraction of bacterial genomes encode CRISPR-Cas systems but the selective causes of this variation are unexplained. How naturally virulent bacteriophages (phages) select for CRISPR immunity has...
www.biorxiv.org
Reposted by Dave Baltrus 🦦
brunojnavarro.bsky.social
In the 5 to 10 percent of symptomatic cases where the fungus invades the vital organs, the death rate is as high as 25 percent. The pathogen is so powerful the U.S. army weighed whether to develop it into a bioterrorism weapon in the 1960s.
In Arizona, a fight against a deadly fungus is under threat from Trump’s health policies
What one Arizona doctor’s quest to stop valley fever says about America’s preparedness for climate-driven disease.
grist.org
Reposted by Dave Baltrus 🦦
natureportfolio.nature.com
This year’s Nobel Prize in Physiology or Medicine has been awarded to Mary Brunkow, Fred Ramsdell, and Shimon Sakaguchi for discovering a class of immune cells that help to prevent the body from attacking its own tissues. #medsky 🧪
Medicine Nobel goes to scientists who revealed secrets of immune system ‘regulation’
Mary Brunkow, Fred Ramsdell and Shimon Sakaguchi discovered cells that protect the body from autoimmune diseases.
go.nature.com
surtlab.bsky.social
That surplus doesn’t count bc knowledge and education are for losers