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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 23d

Integrative Thermodynamics Strategies in Microbial Metabolism www.biorxiv.org/content/10.1... #jcampubs

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 23d

Methanotrophy Under Extreme Alkalinity in a Serpentinizing System www.biorxiv.org/content/10.1... #jcampubs

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 23d

Microbial exoenzymes catalyzed the transition to an oxygenated Earth #USC_MEB #jcampubs www.biorxiv.org/content/10.1...

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 22d

Tectonic setting shapes microbial biosynthetic potential across global geothermal environments www.biorxiv.org/content/10.1... #jcampubs

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 20d

Testing the priming effect in the deep ocean: are microorganisms too starved to consume recalcitrant organic carbon? journals.asm.org/doi/full/10.... #jcampubs 🌊

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 19d

Interspecies electron transfer as one of key drivers of methanogenic consortia succession within quorum sensing regulation academic.oup.com/ismecommun/a... #jcampubs

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · 19d

Microbial ecology of acidic, biogenic gypsum: community structure and distribution of extremophiles on freshly formed and relict sulfate deposits in a hydrogen sulfide-rich cave journals.asm.org/doi/full/10.... #jcampubs

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Reposted by Heidi Aronson, PhD

Mike Jetten @msmjetten.bsky.social · 20d

Great new trait of #Methanoperedens archaea: Carbon monoxide metabolism in freshwater anaerobic #methanotrophic archaea #aom #anme
Egas @cuwelte.bsky.social et al #microbiology @ribesresearch.bsky.social
www.biorxiv.org/content/10.1...

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Reposted by Heidi Aronson, PhD

bioRxiv Microbiology @biorxiv-microbiol.bsky.social · 23d

Tectonic setting shapes microbial biosynthetic potential across global geothermal environments https://www.biorxiv.org/content/10.1101/2025.09.14.675129v1

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Reposted by Heidi Aronson, PhD

bioRxiv Microbiology @biorxiv-microbiol.bsky.social · 25d

Methanotrophy Under Extreme Alkalinity in a Serpentinizing System https://www.biorxiv.org/content/10.1101/2025.09.12.675893v1

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Reposted by Heidi Aronson, PhD

Nagissa Mahmoudi @nagissa.bsky.social · 26d

🚨New preprint from our lab!🚨

We trace the evolution of microbial exoenzymes and uncover their role in Earth’s oxygenation. By recycling nutrients, exoenzymes helped fuel cyanobacteria and set off feedbacks that sustained the long-term rise of O₂.

#MicroSky 🧪 🦠 🌎

www.biorxiv.org/content/10.1...

Microbial exoenzymes catalyzed the transition to an oxygenated Earth

Microbial exoenzymes, extracellular enzymes secreted to degrade complex organic polymers, are essential for recycling carbon and nutrients, thus sustaining primary productivity in todays oceans. Yet, ...

www.biorxiv.org

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Reposted by Heidi Aronson, PhD

Seth Bordenstein @symbionticism.bsky.social · Sep 8

🎙️ Job Announcement: Penn State is seeking an ASSISTANT PROFESSOR in MICROBIOLOGY (any subdiscipline) in the Department of Biochemistry and Molecular Biology.

Learn more and Join the Microbiome Jubilee: psu.wd1.myworkdayjobs.com/en-US/PSU_Ac...

Assistant Professor in Microbiology

APPLICATION INSTRUCTIONS: CURRENT PENN STATE EMPLOYEE (faculty, staff, technical service, or student), please login to Workday to complete the internal application process. Please do not apply here, a...

psu.wd1.myworkdayjobs.com

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Reposted by Heidi Aronson, PhD

Karen Lloyd @karenlloyd.bsky.social · Aug 20

Great new article about the cool stuff we're finding (improbably) alive deep inside Earth's crust! Nice work, @laurapoppick.bsky.social at @quantamagazine.bsky.social www.quantamagazine.org/the-pursuit-...

The Pursuit of Life Where It Seems Unimaginable | Quanta Magazine

A decade ago, Karen Lloyd discovered single-celled microbes living beneath the seafloor. Now she studies how they can survive in Earth’s crust, possibly for hundreds or thousands of years, and push li...

www.quantamagazine.org

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Reposted by Heidi Aronson, PhD

Lotus Lofgren @lotuslofgren.bsky.social · Sep 2

Our department (Berkeley PMB) is hiring an asst. prof. in Plant Resilience to Climate Change! aprecruit.berkeley.edu/JPF05049

Assistant Professor - Plant Resilience to Climate Change - Department of Plant and Microbial Biology

University of California, Berkeley is hiring. Apply now!

aprecruit.berkeley.edu

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Reposted by Heidi Aronson, PhD

Karthik Anantharaman @karthik-a.bsky.social · Aug 29

New review paper on metabolic handoffs in microbiomes led by PhD student Katie Klier.

We define major types of metabolic handoffs, examine their drivers and benefits, & describe their importance in different complex microbial systems and environments.

www.sciencedirect.com/science/arti...

An updated view of metabolic handoffs in microbiomes

From the human gut to the deep ocean, diverse microbial communities underpin essential ecosystem processes. Limited understanding of the dynamics and …

www.sciencedirect.com

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Reposted by Heidi Aronson, PhD

Jennifer Biddle @jenbiddle.bsky.social · Aug 27

Hey are you looking for a postdoc focusing on microbial
ecology/bioinformatics? Hit me up - it’s not my lab but trying to help someone else staff their lab. If you have a student about to defend, this could be a great chance to get a ton of papers.

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · Aug 27

Lithosyntrophy: Obligate syntrophy in a phosphite-oxidizing, methanogenic culture www.biorxiv.org/content/10.1... #jcampubs

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · Aug 28

Bringing the uncultivated microbial majority of freshwater ecosystems into culture www.nature.com/articles/s41... #jcampubs

Bringing the uncultivated microbial majority of freshwater ecosystems into culture - Nature Communications

A large fraction of aquatic bacteria remains uncultured. Here, the authors cultivated 627 strains of abundant freshwater bacteria from 14 European lakes, thus generating a collection that includes man...

www.nature.com

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Reposted by Heidi Aronson, PhD

Alex Loy @loyteam.bsky.social · Aug 27

📢 New paper in @nature.com

Microbes rock 🎸🤘 with sulfide and iron minerals

I am very excited to share our recent study, which describes a previously unknown microbial energy metabolism ⚡⚡⚡🦠🧫⚡⚡⚡

🆕 Microbial iron oxide respiration coupled to sulfide oxidation - MISO

www.nature.com/articles/s41...

Microbial iron oxide respiration coupled to sulfide oxidation - Nature

Genomic and biochemical analyses of prokaryotic sulfur metabolism identify diverse microorganisms with the capacity to oxidize sulfide using iron(iii).

www.nature.com

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · Aug 27

Microbial iron oxide respiration coupled to sulfide oxidation www.nature.com/articles/s41... #jcampubs

Microbial iron oxide respiration coupled to sulfide oxidation - Nature

Genomic and biochemical analyses of prokaryotic sulfur metabolism identify diverse microorganisms with the capacity to oxidize sulfide using iron(iii).

www.nature.com

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Heidi Aronson, PhD @heidi-aronson.bsky.social · Aug 27

Thanks! Had a lot of fun with the physiology experiments and proteomics. I think FeS2 formation coupled to methanogenesis is a strong contender and I’m curious about the mechanism behind this one. I’m also working on thermodynamic calcs to see if others are possible! www.pnas.org/doi/full/10....

PNAS

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

www.pnas.org

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Heidi Aronson, PhD @heidi-aronson.bsky.social · Aug 27

Phosphite oxidizers 🤝 Methanogens
In our new paper on “Lithosyntrophy” we show that phosphite oxidation drives methanogenesis through interspecies H2 transfer. Lithosyntrophy establishes a novel mechanistic link between the #phosphorus and carbon redox cycles

bioRxiv Microbiology @biorxiv-microbiol.bsky.social · Aug 27

Lithosyntrophy: Obligate syntrophy in a phosphite-oxidizing, methanogenic culture https://www.biorxiv.org/content/10.1101/2025.08.26.672485v1

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Reposted by Heidi Aronson, PhD

Tristan Caro @tacaro.bsky.social · Aug 26

Excited to share our pre-print examining microbial activity and carbon utilization in the serpentinizing subsurface! Tl;dr: Serpentinite-hosted microbes are notably active, thriving on DIC despite alkalinity. Implications for #astrobiology, #carboncapture, and #GeoH2!
www.biorxiv.org/content/10.1...

Dissolved inorganic carbon supports robust anabolism and methanogenesis in actively serpentinizing rocks

Serpentinites, hydrated ultramafic rocks that produce [hyper]alkaline, reducing, H2-rich groundwaters, host subsurface microbial ecosystems. Though in the presence of enormous reducing power, life in ...

www.biorxiv.org

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Reposted by Heidi Aronson, PhD

Cameron Thrash @jcamthrash.bsky.social · Aug 26

Dissolved inorganic carbon supports robust anabolism and methanogenesis in actively serpentinizing rocks www.biorxiv.org/content/10.1... #jcampubs

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Reposted by Heidi Aronson, PhD

Jonathan Gropp @biogeochem345.bsky.social · Aug 21

Our story about microbial methane is out! We found that reducing the expression of a key gene of methanogenesis modulates the isotopic composition of the methane:
www.science.org/doi/10.1126/...

Check out also the coverage at the UC Berkeley News website:
news.berkeley.edu/2025/08/14/s...

Modulation of methyl–coenzyme M reductase expression alters the isotopic composition of microbial methane

The stable isotopic composition of microbial methane varies substantially, and the underlying causes are debated. In this work, we experimentally controlled the abundance of the central enzyme in meth...

www.science.org

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