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James Marsh

@jmarsh.bsky.social

3.2K followers 1.2K following 191 posts

Group Leader navigating microbiome genetics & engineering @ Max Planck in Tübingen, Germany. Rarely late. ☕️🎧🇦🇺🎥

Posts Replies Media

James Marsh @jmarsh.bsky.social · 04/09/2025

There's still time to get your abstracts in for this year's International Conference on Microbiome Engineering conference in Antwerp! We extended the deadline to September 15th. #microsky #microbiomesky

Conference flyer for the 2025 International Conference on Microbiome Engineering. Lists the session topics and organizing committee.

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James Marsh @jmarsh.bsky.social · 22/11/2024

Honored to be part of a collaborative team receiving funding to genetically engineer methanogens in ruminants for reducing carbon emissions. We're now seeking multiple postdocs in the USA, Germany, and New Zealand - apply via the link! docs.google.com/forms/d/e/1F... 🧫🧪 #ArchaeaSky #MicrobiomeSky

Call for expressions of interest for post doc positions in various locations worldwide to genetically engineer methanogens. The letterhead includes a large brown cow.

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James Marsh @jmarsh.bsky.social · 18/10/2023

MADAME automates #microbiome data and metadata retrieval from public databases and generates associated plots and statistics. www.biorxiv.org/content/10.1...

Bioinformatic workflow for the MADAME software suite showing the various inputs and outputs.

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James Marsh @jmarsh.bsky.social · 12/10/2023

Live from the CMFI Symposium in Tübingen: Congratulations to Ley Lab Team Genetics members @megchatterjee.bsky.social, Jan Phillip Kisker, and Christian Kirk on presenting their first posters as PhD students! 🧫 @microbiome.bsky.social

Meghna Chatterjee in front of her poster at the CMFI Symposium in Tübingen.

Jan Phillip Kisker in front of his poster at the CMFI Symposium in Tübingen.

Christian Kirk in front of his poster at the CMFI Symposium in Tübingen.

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James Marsh @jmarsh.bsky.social · 08/10/2023

B. theta is once again blazing the trail for understanding the functional #microbiome using genetics. Boba-seq enables barcoded overexpression libraries for scalable and quantitative phenotypic screens in diverse bugs. www.biorxiv.org/content/10.1...

A multi-panel figure illustrating the Boba-seq workflow for high-throughput functional screens.

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James Marsh @jmarsh.bsky.social · 14/09/2023

For Institute Open day today, Alina, Anna, and Christian showcased their hidden talents and whipped up an incredible gut cake! If anatomically accurate cakes were a thing, this one wins.

A photo of an incredibly detailed cake in the form of the human digestive system.

A photo of students Anna, Alina, and Christian and their incredibly detailed cake in the form of the human digestive system.

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James Marsh @jmarsh.bsky.social · 02/09/2023

Today’s forecast: Deutschland. I’ll never tire of that view 🇩🇪

The view from a mountaintop of a small town surrounding an abbey in Southern Germany.

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James Marsh @jmarsh.bsky.social · 29/08/2023

Cheers yoghurt, thanks

Underside of yoghurt lid stating that "you have 206 total bones in your body".

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James Marsh @jmarsh.bsky.social · 26/08/2023

A quick reminder that we are a garden in human form 🧪🔬

A drawing of a human body and the colonisation sites for several microbes. Taken from "Follow Your Gut: The Enormous Impact of Tiny Microbes" by Rob Knight: https://www.ted.com/read/ted-books/ted-books-library/follow-your-gut

A drawing of a human body comparing the number of human cells and microbial cells. Taken from "Follow Your Gut: The Enormous Impact of Tiny Microbes" by Rob Knight: https://www.ted.com/read/ted-books/ted-books-library/follow-your-gut

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James Marsh @jmarsh.bsky.social · 12/08/2023

A new microbial time tree calibrated using the Great Oxidation Event highlights the evolution of aerobic bacteria. Originally anaerobic, the transition to an aerobic lifestyle started with Cyanobacteria, which seeded the broader bacterial tree over time. 🧪 doi.org/10.1101/2023.08.08.552427

"A species tree of Bacteria, with branches coloured according to predicted ability to grow in the presence of oxygen (red, aerobic; blue, anaerobic). The external disc shows observed (dark colours) or predicted (light colours) oxygen use phenotypes for extant genomes. Major bacterial phyla (with more than 15 genomes in our tree) are named and delimited by shading. Branch lengths are proportional to the expected number of substitutions per site, as indicated by the scale bar." https://doi.org/10.1101/2023.08.08.552427

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James Marsh @jmarsh.bsky.social · 06/08/2023

Today at Blautopf in Blaubeuren, Germany: A spectacle of nature. The high density of limestone particles creates a mesmerizing blue through Rayleigh scattering of light. Nature’s wonders at play.

A natural spring with a striking blue color surrounded by lush, green trees

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James Marsh @jmarsh.bsky.social · 02/08/2023

Your days are numbered, one of 5000 currently intractable non-model bugs associated with the human gut…

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James Marsh @jmarsh.bsky.social · 31/07/2023

The genetic history of Machu Picchu's ancient inhabitants highlights ancestries spanning the Inca Empire and Amazonia - a melting pot of cultures and backgrounds. www.science.org/doi/10.1126/sciadv.…

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