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Rolf Kümmerli

@rkmicrobes.bsky.social
1.2K followers 217 following 34 posts

Professor at University of Zurich, Microbiology, Evolution, Ecology, Microbial Interactions, Infections

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Rolf Kümmerli @rkmicrobes.bsky.social · 05/10/2026
This paper allowed us to explore new territories, away from secondary metabolites towards getting a deeper understanding of amino acid metabolism and the frequency of auxotrophies in pseudomonads.
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Reposted by Rolf Kümmerli
Subham Mridha @subhammridha.bsky.social · 18/09/2026
Predation resistance mechanisms operate at an individual level, adaptations are sometimes pleiotropic and compensatory. Thanks to all my co-authors who made this research possible Ove, Sarah, Saskia, Bernd, @rkmicrobes.bsky.social @simonahuwiler.bsky.social #AMR #Bdello #Evolution tiny.cc/2qpa101
tiny.cc
Outer membrane changes enable evolutionary escape from bacterial predation
Abstract. Antimicrobial resistance (AMR) is a threat to modern medicine. To combat AMR pathogens, natural predators like bacteriophages and predatory bacte
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Reposted by Rolf Kümmerli
Simona Huwiler @simonahuwiler.bsky.social · 18/09/2026
Many thanks to my co-corresponding and first author @subhammridha.bsky.social as well as @rkmicrobes.bsky.social for the collaboration on this extensive study. This work was additionally supported by three great Master students (Ove, Sarah & Saskia) as well as Bernd from FGCZ Zürich.
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Rolf Kümmerli @rkmicrobes.bsky.social · 16/09/2026
Our new review article elaboring on how siderophores can shape bacterial interactions and community building @simonmarech.bsky.social www.sciencedirect.com/science/arti...
sciencedirect.com
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Rolf Kümmerli @rkmicrobes.bsky.social · 05/05/2026
Our new primer article published in Microbiology @microbiologysociety.org for all those who want to benefit from a light entry into metallophore biology www.microbiologyresearch.org/content/jour...
microbiologyresearch.org
Microbial Primer: Bacterial metallophores – their role for metal homeostasis and social interactions
Metals are essential trace elements for almost all organisms including bacteria. Yet, metals are toxic at high concentrations, requiring fine-tuned regulatory mechanisms to steer metal homeostasis ins...
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Rolf Kümmerli @rkmicrobes.bsky.social · 18/02/2026
Our new study combines experiments with bioinformatics to examine amino acid metabolism in Pseudomonas strains co-isolated from pond and soil communities by Simon Maréchal, Beni Heiniger, @swagatika.bsky.social, Shaohua Gu, Christian Ahrens www.biorxiv.org/content/10.6...
biorxiv.org
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Rolf Kümmerli @rkmicrobes.bsky.social · 31/01/2026
Our first study on clinical isolates: genetic, phenotypic and behavioural patterns among P. aeruginosa, S. aureus, and H. influenzae from children with CF @schluk.bsky.social @friendlymicrobe.bsky.social @serenaprovveduto.bsky.social Markus Hilty Philipp Latzin etal www.biorxiv.org/content/10.6...
biorxiv.org
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Rolf Kümmerli @rkmicrobes.bsky.social · 20/01/2026
Joint MSc project 👉 joint paper on Legionella-Pseudomonas interactions, together with @alecava.bsky.social, Johanna Kohler, @mgabrielli.bsky.social, @veraeva.bsky.social, and @drinkmic.bsky.social www.biorxiv.org/content/10.6...
biorxiv.org
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Ákos T Kovács @evolvedbiofilm.bsky.social · 20/01/2026
bioRxiv by @alecava.bsky.social, Johanna Kohler, @mgabrielli.bsky.social, @veraeva.bsky.social, @rkmicrobes.bsky.social, and @drinkmic.bsky.social Siderophore-mediated inhibition of Legionella pneumophila by environmental Pseudomonas isolates
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Rolf Kümmerli @rkmicrobes.bsky.social · 13/01/2026
Sabbatical output #3. I have learnt a lot about metabolomics and its application in forensics. pubs.acs.org/doi/10.1021/...
pubs.acs.org
Untargeted Metabolomics for Forensic Body Fluid Identification-A Pilot Study
Determining the bodily origin of biological traces is a valuable tool in forensic investigations as it helps corroborate testimonies, reconstruct crime-related activities, and select relevant samples ...
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Rolf Kümmerli @rkmicrobes.bsky.social · 13/01/2026
Sabbatical output #2. I had the privilege to support colleagues from Ghana with their work on antibiotic resistance. www.frontiersin.org/journals/mic...
frontiersin.org
Frontiers | Mapping antibiotic resistance in Ghana: a narrative review of regional variations in antibiotic-resistant ESKAPEE pathogens
IntroductionAntibiotic resistance (ABR) is a global health crisis and a significant public health challenge in Ghana. This narrative review aims to uncover t...
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Rolf Kümmerli @rkmicrobes.bsky.social · 13/01/2026
Sabbatical output #1. I had the opportunity to learn much about plan iron nutrition and could help to extend the concepts of siderophore-mediated interactions from microbes to plants. www.nature.com/articles/s41...
nature.com
Client Challenge
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Rolf Kümmerli @rkmicrobes.bsky.social · 13/01/2026
After long radio silence, I have decided to come back to bluesky and post about our work. 2025 was mainly shaped by my sabbatical and excursions into other research domains. In 2026, it’s time to move back to my core work on bacterial interactions. 👇 kuemmerli-lab.weebly.com
kuemmerli-lab.weebly.com
KÜMMERLI LAB
Bacteria live in complex communities, consisting of several strains of the same species and multiple different species. Within these communities, there are ample opportunities for bacteria to...
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Rolf Kümmerli @rkmicrobes.bsky.social · 10/06/2025
We are looking for a highly motivated postdoc to work on pathogen interactions. Please send in your application via jobs.uzh.ch/job-vacancie...
jobs.uzh.ch
UZH: Postdoctoral researcher in microbiology
The Department of Quantitative Biomedicine is an interdisciplinary biomedical research unit that combines basic science with biotechnological and medical research, using both experimental and computat...
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Rolf Kümmerli @rkmicrobes.bsky.social · 05/06/2025
Our opinion piece on the role of microbial siderophores for One Health is now out with Zhong Wei, Shaohua Gu, Yuanmei Zuo, Zhiyuan Li and @veraeva.bsky.social www.cell.com/trends/micro...
cell.com
Microbial siderophores for One Health
One Health is an integrative concept striving for healthy environments, animals, and humans. Microbes play a fundamental role for this concept as they are key drivers of ecosystem stability and host h...
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Reposted by Rolf Kümmerli
Ákos T Kovács @evolvedbiofilm.bsky.social · 04/06/2025
Microbial siderophores for One Health #Pseudomonas @cp-trendsmicrobiol.bsky.social Opinion by Zhong Wei et al with @rkmicrobes.bsky.social @veraeva.bsky.social www.cell.com/trends/micro...
cell.com
Microbial siderophores for One Health
One Health is an integrative concept striving for healthy environments, animals, and humans. Microbes play a fundamental role for this concept as they are key drivers of ecosystem stability and host h...
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Reposted by Rolf Kümmerli
ISME - International Society for Microbial Ecology @isme-microbes.bsky.social · 24/04/2025
ISME congratulates Tess Brewer, Hans Bernstein, and @rkmicrobes.bsky.social for winning the Outstanding Editorial Board Member Awards for their contributions to The ISME Journal. 🔗 isme-microbes.org/editorial-bo... #MicrobialEcology #microbes
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Rolf Kümmerli @rkmicrobes.bsky.social · 14/03/2025
My sabbatical has started!
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Rolf Kümmerli @rkmicrobes.bsky.social · 25/02/2025
New preprint! How S. aureus copes with inhibitory compounds secreted by P. aeruginosa. By @schluk.bsky.social. Great collaboration with @fgcz-en.bsky.social www.biorxiv.org/content/10.1...
biorxiv.org
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Rolf Kümmerli @rkmicrobes.bsky.social · 12/02/2025
New paper out in ISME Journal. Social interactions between strains shape bacterial communities. However, their impact on community functioning is lower compared to basic strain identity features. @joskramer.bsky.social @alexfig.bsky.social @simonmarech.bsky.social academic.oup.com/ismej/advanc...
academic.oup.com
Strain identity effects contribute more to Pseudomonas community functioning than strain interactions
Abstract. Microbial communities can shape key ecological services, but the determinants of their functioning often remain little understood. While traditio
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Ákos T Kovács @evolvedbiofilm.bsky.social · 09/02/2025
Strain identity effects contribute more to Pseudomonas community functioning than strain interactions #ISMEJournal by @joskramer.bsky.social et al from @rkmicrobes.bsky.social academic.oup.com/ismej/advanc...
academic.oup.com
Strain identity effects contribute more to Pseudomonas community functioning than strain interactions
Abstract. Microbial communities can shape key ecological services, but the determinants of their functioning often remain little understood. While traditio
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Rolf Kümmerli @rkmicrobes.bsky.social · 16/01/2025
We derive iron-siderophore interaction networks among Pseudomonas strains from sequencing data. One key insight: natural strains form dense networks, whereas pathogens are loners. With @frimanscience.bsky.social @zhiyuanli.bsky.social & Nanjing colleagues www.science.org/doi/10.1126/...
science.org
Siderophore synthetase-receptor gene coevolution reveals habitat- and pathogen-specific bacterial iron interaction networks
Coevolving siderophore genes shape bacterial iron networks, unveiling the complexity of cheating across habitats and lifestyles.
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Typas Lab @typaslab.bsky.social · 16/12/2024
You want to learn about microbiology from a fantastic lineup of speakers on a beautiful Greek island? PhD students apply now for the @EMBO | @FEBSnews Lecture Course The New Microbiology! Registration: 1 Apr 2025 Course: 03 – 11 Sep 2025 | Spetses, Greece meetings.embo.org/event/25-new...
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Rolf Kümmerli @rkmicrobes.bsky.social · 16/12/2024
Wonderful pre-X-mas group activity in Arth-Goldau Wildlife Park.
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Rolf Kümmerli @rkmicrobes.bsky.social · 12/12/2024
Why we should have more lab cleaning days.
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Rolf Kümmerli @rkmicrobes.bsky.social · 03/12/2024
My group (secretly) nominated me for the UZH Montoring Award. I feel deeply honoured and flattered. It means a lot to me. Many thanks.
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Rolf Kümmerli @rkmicrobes.bsky.social · 14/11/2024
Proud to have been involved in this great project lead by @simonahuwiler.bsky.social and Subham Mridha on predatory bacteria and the resistance they trigger in their prey. www.biorxiv.org/content/10.1...
biorxiv.org
Outer membrane changes enable evolutionary escape from bacterial predation
To combat antimicrobial resistant pathogens, natural predatory bacteria, like Bdellovibrio bacteriovorus , represent potential alternatives. B. bacteriovorus could be particularly potent as it kills a...
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Rolf Kümmerli @rkmicrobes.bsky.social · 14/11/2024
I have abstained from social media for quite some time. Now, I make a new effort - especially for the sake of my students and postdocs who accomplish outstanding things and keep the lab going.
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Rolf Kümmerli @rkmicrobes.bsky.social · 14/11/2024
I have abstained from social media for quite some time. Now, I make a new effort - especially for the sake of my students and postdocs who accomplish outstanding things and keep the lab going.
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Reposted by Rolf Kümmerli
Ákos T Kovács @evolvedbiofilm.bsky.social · 16/10/2024
Superb visit at #eawag yesterday discussing cool projects. Thanks Chujin Ruan, group of Dave Johnson for the invitation 🙏 Nice to also meet up with @rkmicrobes.bsky.social, Serina Robinson, and Eleonora Secchi!
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Rolf Kümmerli @rkmicrobes.bsky.social · 11/06/2024
New preprint from our lab. Bacterial social interactions are common. But to what extent do they contribute to community functioning compared to basic species identity effects? Check it out 👇 www.biorxiv.org/content/10.1...
biorxiv.org
Strain identity effects contribute more to Pseudomonas community functioning than strain interactions
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Rolf Kümmerli @rkmicrobes.bsky.social · 11/06/2024
New preprint from our lab. Bacterial social interactions are common. But to what extent do they contribute to community functioning compared to basic species identity effects? Check it out 👇 www.biorxiv.org/content/10.1...
biorxiv.org
Strain identity effects contribute more to Pseudomonas community functioning than strain interactions
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Rolf Kümmerli @rkmicrobes.bsky.social · 16/04/2024
Our new paper on siderophore gene expression heterogeneity across space and time in #Pseudomonas is now out in #CellReports www.cell.com/cell-reports...
cell.com
Space and genealogy determine inter-individual differences in siderophore gene expression in bacterial colonies
Mridha et al. show that the spatial positioning of cells within colonies and genealogical effects drive cellular siderophore gene expression heterogeneity in Pseudomonas aeruginosa bacteria. Functiona...
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Rolf Kümmerli @rkmicrobes.bsky.social · 16/04/2024
Our new paper on siderophore gene expression heterogeneity across space and time in #Pseudomonas is now out in #CellReports www.cell.com/cell-reports...
cell.com
Space and genealogy determine inter-individual differences in siderophore gene expression in bacterial colonies
Mridha et al. show that the spatial positioning of cells within colonies and genealogical effects drive cellular siderophore gene expression heterogeneity in Pseudomonas aeruginosa bacteria. Functiona...
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Reposted by Rolf Kümmerli
Ákos T Kovács @evolvedbiofilm.bsky.social · 29/03/2024
Predicting bacterial interaction outcomes from monoculture growth and supernatant assays #ISMEComms by @microbedesi.bsky.social et al from @rkmicrobes.bsky.social academic.oup.com/ismecommun/a...
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Rolf Kümmerli @rkmicrobes.bsky.social · 25/03/2024
New preprint: Colony-level interactions among ESKAPE pathogens on surfaces. A rich repertoire of ecological interactions occurs: mutualism, commensalism, ammensalism, and antagonism. www.biorxiv.org/content/10.1...
biorxiv.org
Interactions between Pseudomonas aeruginosa and six opportunistic pathogens cover a broad spectrum from mutualism to antagonism
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Rolf Kümmerli @rkmicrobes.bsky.social · 25/03/2024
New preprint: Colony-level interactions among ESKAPE pathogens on surfaces. A rich repertoire of ecological interactions occurs: mutualism, commensalism, ammensalism, and antagonism. www.biorxiv.org/content/10.1...
biorxiv.org
Interactions between Pseudomonas aeruginosa and six opportunistic pathogens cover a broad spectrum from mutualism to antagonism
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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Reposted by Rolf Kümmerli
Michael Brockhurst @brockhurstlab.bsky.social · 13/03/2024
Less than a week left to apply for this RA position ⬇️ AMR evolution in human Pseudomonas airway infections 🧫 🫁 💊 #microsky
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Yolanda Schaerli @yschaerli.bsky.social · 05/03/2024
#PLOSBiology: An engineered bacterial symbiont allows noninvasive biosensing of the honey bee gut environment dx.plos.org/10.1371/jour...
dx.plos.org
An engineered bacterial symbiont allows noninvasive biosensing of the honey bee gut environment
The honey bee is a powerful model system to probe host-gut microbiota interactions. This study describes the genetic engineering of a native bacterial symbiont of the honey bee to non-invasively sense...
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Reposted by Rolf Kümmerli
Mario Muscarella @mmuscarella.bsky.social · 05/03/2024
I am recruiting a PhD student to work on microbial communities in Arctic ecosystems. This is a great opportunity for someone interested in combining field, lab, and computational approaches. If you are interested, message me for more information.
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Siobhán O'Brien @siderophile.bsky.social · 22/02/2024
This paper was really fun to write! Unpicking the subtle differences between dependencies, facilitation and cooperation in microbial communities, and why it matters. With Elze Hesse (not here yet!)
microbiologyresearch.org
Ecological dependencies and the illusion of cooperation in microbial communities
Ecological dependencies – where organisms rely on other organisms for survival – are a ubiquitous feature of life on earth. Multicellular hosts rely on symbionts to provide essential vitamins and amin...
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Reposted by Rolf Kümmerli
Reed Stubbendieck @bactereedia.bsky.social · 20/02/2024
Please share: The Stubbendieck Lab is hiring a postdoc to study microbial competition & secondary metabolism in human microbiomes. Experience in natural product chemistry or BGCs preferred. For more info and to apply: apply.interfolio.com/141377
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Kimberly Kline 🏔 @kimingeneva.bsky.social · 06/02/2024
PhD student opening! We are collaborating with the team of David Johnson @EawagResearch to understand E. faecalis polymicrobial community assembly, interactions, and consequences for AMR and infection. Details of the position and how to apply can be found here: tinyurl.com/ywa52a6a.
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florian walder @flowalder.bsky.social · 07/02/2024
🚨3- Year PostDoc Position 🌱 Soil organic matter (SOM) is key for soil health & agroecosystem productivity. With humusbilanz.ch, Agroscope supports CH farmers in SOM management. The projects aims at updating the tool with modern models & data for informed soil management decisions.
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Rolf Kümmerli @rkmicrobes.bsky.social · 30/01/2024
Siderophores and their role in solubilizing iron for plants in intercopping systems. - Very grateful that I could contribute to this project. Great colleagues, great teamwork! www.nature.com/articles/s41...
nature.com
Microbiome convergence enables siderophore-secreting-rhizobacteria to improve iron nutrition and yie...
Intercropping has the potential to improve plant nutrition and crop yield. Here, the authors intercrop peanut and maize and show that Pseudomonas secreted siderophore pyoverdine play an important role...
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Rolf Kümmerli @rkmicrobes.bsky.social · 30/01/2024
Siderophores and their role in solubilizing iron for plants in intercopping systems. - Very grateful that I could contribute to this project. Great colleagues, great teamwork! www.nature.com/articles/s41...
nature.com
Microbiome convergence enables siderophore-secreting-rhizobacteria to improve iron nutrition and yie...
Intercropping has the potential to improve plant nutrition and crop yield. Here, the authors intercrop peanut and maize and show that Pseudomonas secreted siderophore pyoverdine play an important role...
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Rolf Kümmerli @rkmicrobes.bsky.social · 17/01/2024
We work with zebrafish! Our first (method) paper on polymicrobial infections, real-time imaging and automated data analysis with this exciting model host. Now out on bioRxiv. Guided by @microbedesi.bsky.social www.biorxiv.org/content/10.1...
biorxiv.org
A new protocol for multispecies bacterial infections in zebrafish and their monitoring through autom...
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
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