Jerónimo Rodríguez-Beltrán
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jerorb.bsky.social
Jerónimo Rodríguez-Beltrán
@jerorb.bsky.social
We study Antibiotic Resistance Ecology and Evolution · Ramón y Cajal University Hospital · Madrid · www.evodynamicslab.com
Pinned
🚨🚨New paper out in @natcomms.nature.com!!

Come for the first large-scale analysis of plasmid copy number across species,
stay for one of the most intriguing results of my lab: universal scaling laws in plasmid biology! 📈🧬

👉 www.nature.com/articles/s41...
Universal rules govern plasmid copy number - Nature Communications
Plasmids exhibit a broad range of sizes and copies per cell, and these two parameters appear to be negatively correlated. Here, Ramiro-Martínez et al. analyse the copy number of thousands of diverse b...
www.nature.com
Reposted by Jerónimo Rodríguez-Beltrán
What is the best strategy to win any contest?

Eliminate your opponents of course.

Recently, my friend @fernpizza.bsky.social showed how plasmids compete intracellularly (check out his paper published in Science today!). With @baym.lol, we now know they can fight.

www.biorxiv.org/content/10.1...
November 20, 2025 at 10:12 PM
Reposted by Jerónimo Rodríguez-Beltrán
Hot off the press! Our latest paper led by @fernpizza.bsky.social, understanding how plasmids evolve inside cells. These small, self-replicating DNA circles live inside bacteria and carry antibiotic resistance genes, but also compete with one another to replicate. 1/
www.science.org/doi/10.1126/...
Intracellular competition shapes plasmid population dynamics
From populations of multicellular organisms to selfish genetic elements, conflicts between levels of biological organization are central to evolution. Plasmids are extrachromosomal, self-replicating g...
www.science.org
November 20, 2025 at 9:42 PM
Reposted by Jerónimo Rodríguez-Beltrán
🚨Preprint alert - this is a big one! We transfer the revolutionary power of TnSeq to bacteriophages.

Our HIDEN-SEQ links the "dark matter" genes of your favorite phage to any selectable phenotype, guiding the path from fun observations to molecular mechanisms.

A thread 1/8
November 20, 2025 at 8:40 PM
Reposted by Jerónimo Rodríguez-Beltrán
🚀New preprint from our lab!
I am very excited to finally share what has been the main focus of my PhD for the past almost 3 years! It is about viral dark matter and a powerful tool we built to shed light on it. 🧬💡
Continue reading (🧵)
November 20, 2025 at 6:52 PM
Reposted by Jerónimo Rodríguez-Beltrán
Very happy to see this piece out in @plosbiology.org, on the bacterial immune systems and microbial communities. It was a great team effort with Rafael Custodio, @brockhurstlab.bsky.social , @brownlab.bsky.social, and Edze Westra! 🦠🧫 #phagesky #mevosky

journals.plos.org/plosbiology/...
Bacterial immune systems as causes and consequences of microbiome structure
Bacterial immune systems have evolved in response to diverse molecular "parasites", yet their ecological roles remain poorly understood. This Essay explores how interactions between mobile genetic ele...
journals.plos.org
November 19, 2025 at 6:35 PM
Reposted by Jerónimo Rodríguez-Beltrán
🚨#PhD studentship opportunity! Plasmids provide bacteria with antimicrobial resistance, but do they have more fundamental effects on behaviour? 🧫🦠💫🧟‍♂️

Apply for a 4y funded MRC DiMeN position with me and Jamie Wheeler @livuni-ives.bsky.social www.findaphd.com/phds/project...
MRC DiMeN Doctoral Training Partnership: Resistant zombies: how drug-resistance plasmids manipulate the behaviour of the opportunistic pathogen Pseudomonas aeruginosa at University of Liverpool on Fin...
PhD Project - MRC DiMeN Doctoral Training Partnership: Resistant zombies: how drug-resistance plasmids manipulate the behaviour of the opportunistic pathogen Pseudomonas aeruginosa at University of Li...
www.findaphd.com
November 18, 2025 at 9:38 AM
Reposted by Jerónimo Rodríguez-Beltrán
Reposted by Jerónimo Rodríguez-Beltrán
Finally out from @daganlab.bsky.social! 🌱🦠🧬 Evolution of the Plant-Associated Pantoea was Accompanied by Plasmid Domestication Events url: academic.oup.com/mbe/article/...
Evolution of the Plant-Associated Pantoea was Accompanied by Plasmid Domestication Events
Abstract. Plasmids are important drivers of evolutionary transformations and ecological adaptation in prokaryotes. Plasmids supplying the host with benefic
academic.oup.com
November 14, 2025 at 9:21 AM
Reposted by Jerónimo Rodríguez-Beltrán
Metagenomics colleagues!

I'm looking for studies where both Illumina and ONT sequencing were performed on the same samples from soil, human, ruminent, and other sample types for comparison. Bonus if those studies include PacBio data.

Please help and share!
November 11, 2025 at 8:21 PM
Reposted by Jerónimo Rodríguez-Beltrán
Exciting news! I have two positions open in my lab at the UoManchester: one PDRA and one Research Tech.
Join our team to study evolutionary mycology and help us understand antifungal resistance in fungal pathogens. A fantastic opportunity to join the brilliant Manchester Fungal Infection Group!
November 5, 2025 at 3:35 PM
Reposted by Jerónimo Rodríguez-Beltrán
Join us tomorrow if you like plasmids and clones! @sandrareuter.bsky.social will be talking about a particular intriguing outbreak 🤓. @escmid.bsky.social
We invite you to the joint ESGEM & ESGMAP webinar:

👉 Dr. Sandra Reuter, University of Freiburg
“Tracking clonal and plasmid transmission in carbapenem- and colistin-resistant Klebsiella pneumoniae.”

📅 Date & Time: November 11, 2025, 12:00 PM CEST
🔗 Register here: us06web.zoom.us/webinar/regi...
Welcome! You are invited to join a webinar: ESGEM & ESGMAP: Tracking clonal and plasmid transmission in carbapenem- and colistin-resistant Klebsiella pneumoniae. After registering, you will receive a ...
Chairs: Natacha Couto & Elisabeth Grohmann Speaker: Sandra Reuter
us06web.zoom.us
November 10, 2025 at 2:54 PM
Reposted by Jerónimo Rodríguez-Beltrán
🚨 Excited to share our new paper is out! 🎉
We show how interactions within gut microbiomes allow certain antibiotic-resistant E. coli strains to persist even without antibiotics, helping explain how resistance is maintained in the human gut.

Now published in @natcomms.nature.com rdcu.be/eOf63
Multi-layered ecological interactions determine growth of clinical antibiotic-resistant strains within human microbiomes
Nature Communications - The role of ecological factors in modulating the spread of antibiotic-resistance bacteria in the gut remains unclear. Here, the authors use anaerobic microcosms to study the...
rdcu.be
November 7, 2025 at 9:15 AM
Reposted by Jerónimo Rodríguez-Beltrán
Se busca candidat@ xa un contrato Juan de la Cierva en el lab @miguelmatilla.bsky.social en la @eezcsic.bsky.social (Granada). @canalugr.bsky.social @csic.es @csicdivulga.bsky.social
Info en: aei.gob.es/convocatorias/…

Las personas interesadas deben de ponerse vía: [email protected]
November 8, 2025 at 11:35 PM
Reposted by Jerónimo Rodríguez-Beltrán
🚨New preprint out!
We present a foundational genomic resource of human gut microbiome viruses. It delivers high-quality, deeply curated data spanning taxonomy, predicted hosts, structures, and functions, providing a reference for gut virome research. (1/8)
www.biorxiv.org/content/10.1...
November 6, 2025 at 5:26 PM
Reposted by Jerónimo Rodríguez-Beltrán
We have an open PhD position (application deadline 9 January 2026) in "Theory of fitness landscapes" at @unibe.ch 🤓⛰️📊👩‍💻🎓: banklab.github.io/positions/

Please share widely!

#QueerInSTEM #DisabledInSTEM #BlackInSTEM #WomenInSTEM #CarersInSTEM #AcademicSky #HigherED
October 28, 2025 at 4:22 PM
Reposted by Jerónimo Rodríguez-Beltrán
New pre-print: Plasmid dependent phage effectively eliminate AMR bacteria and block plasmid transmission in the chicken gut microbiome

Fun collaboration with Tao He lab (JAAS) and @brockhurstlab.bsky.social lab (Manchester)
#phagesky#microsky

www.biorxiv.org/content/10.1...
Plasmid dependent phage eliminate pathogenic bacteria and antibiotic resistance plasmids from the chicken gut microbiome
Conjugative plasmids are a key reservoir of antimicrobial resistance (AMR) in commensal and pathogenic bacteria within the gut microbiome. Plasmid-dependent phage (PDPs) are a promising therapeutic op...
www.biorxiv.org
October 27, 2025 at 8:19 AM
Reposted by Jerónimo Rodríguez-Beltrán
Integrating theory and machine learning to reveal determinants of plasmid copy number https://www.biorxiv.org/content/10.1101/2025.10.23.684078v1
October 24, 2025 at 2:18 AM
Reposted by Jerónimo Rodríguez-Beltrán
One of the most exciting works of my career, years in the making. We used high-throughput precision genome editing to test the fitness effects of thousands of natural variants. Our findings challenge the long-held assumption that common variants are inconsequential.

www.biorxiv.org/content/10.1...
Massively parallel interrogation of the fitness of natural variants in ancient signaling pathways reveals pervasive local adaptation
The nature of standing genetic variation remains a central debate in population genetics, with differing perspectives on whether common variants are almost always neutral as suggested by neutral and n...
www.biorxiv.org
October 22, 2025 at 5:46 PM
Reposted by Jerónimo Rodríguez-Beltrán
New paper with my (amazing) friend and mentor @jrpenades.bsky.social
Really looking forward to see what plasmid aficionados think of this one!!
With @asantoslopez.bsky.social @wfigueroac3.bsky.social Akshay Sabins and others
www.cell.com/cell-reports...
Non-conjugative plasmids limit their mobility to persist in nature
Sabnis et al. explain why non-conjugative plasmids move at a low rate in nature. While increased mobility can easily evolve by incorporating phage DNA into plasmids, this is disadvantageous because it...
www.cell.com
October 22, 2025 at 1:12 PM
Reposted by Jerónimo Rodríguez-Beltrán
1/3 To those interested in microbial iron & metal transport: In 1992, the late JB Neilands (UCB), the pioneer in the study of Fe transport entrusted me with his collection of purified siderophores from a wide range of microbes—many of them unique chemical species that can no longer be reproduced
October 14, 2025 at 2:54 PM
Reposted by Jerónimo Rodríguez-Beltrán
Our latest work reveals that arbitrium phages cross-communicate across species! These tiny viruses “listen” to signals from others, coordinating lysis-lysogeny decisions across species.
Original idea from @albertomarina.bsky.social and, as usual, he was right.
www.biorxiv.org/content/10.1...
Phages communicate across species to shape microbial ecosystems
Arbitrium is a communication system that helps bacteriophages decide between lysis and lysogeny via secreted peptides. In arbitrium, the AimP peptide binds its cognate AimR receptor to repress aimX ex...
www.biorxiv.org
October 14, 2025 at 1:36 PM
Reposted by Jerónimo Rodríguez-Beltrán
After the coffee break, we had a round table about dealing with evolution of drug resistance & synergies among EvoMG fields. We had a panel representing the different related "areas": Isabel Veiga (Plasmodium), David Posada (Cancer), Jero Rodriguez (Bacteria), Ana Abecasis (Virus).
October 12, 2025 at 2:56 PM
Reposted by Jerónimo Rodríguez-Beltrán