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Kartik Aiyer @kartiksaiyer.bsky.social · 1d

Pleased to share this work on cable bacteria. We demonstrate that E.aureum GS, a freshwater cable bacterium, can use extracellular electron transfer to gain energy in anoxic conditions. Many thanks to @leodigel.bsky.social , @ianpgm.bsky.social and other coauthors at @cemau.bsky.social

Ian Marshall @ianpgm.bsky.social · 1d

New preprint by @kartiksaiyer.bsky.social, @leodigel.bsky.social and others from @cemau.bsky.social about how cable bacteria grow using electrodes instead of oxygen: www.biorxiv.org/content/10.1...

Extracellular electron transfer in cable bacteria enables growth rates comparable to aerobic respiration

Cable bacteria are filamentous sulphide-oxidisers performing long-distance electron transfer in redox-stratified sediments by transporting electrons over centimetre-scale distances to reduce oxygen. H...

www.biorxiv.org

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Reposted by Kartik Aiyer

Robin Talks Science @robintalksscience.bsky.social · 23d

Hey ISMET member ✋
Did you think we could use a new website too?
Well here it is: www.is-met.org.

It was a pleasure working with @ismetsociety.bsky.social to make their website more engaging and interesting for their members.

Do you also have a website that could use some polishing?

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Reposted by Kartik Aiyer

Nature Communications @natcomms.nature.com · Aug 19

A Gram-positive bacterium can simultaneously reduce oxygen and iron under oxic conditions

‪@jlustermans.bsky.social‬ ‪@leodigel.bsky.social‬ ‪@kartiksaiyer.bsky.social

Iron reduction under oxic conditions by Microbacterium deferre sp. nov. A1-JKT - Nature Communications

In this study, the authors show that Microbacterium deferre A1-JK, a newly isolated Gram-positive bacterium, simultaneously reduces oxygen and iron under oxic conditions, revealing unexpected microbial metabolic flexibility with implications for biogeochemical cycling.

bit.ly

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Kartik Aiyer @kartiksaiyer.bsky.social · Jul 19

Recent research has highlighted the ability of some microbes to simultaneously respire aerobically and anaerobically, a flexible strategy that reshapes our understanding of microbial metabolism. In my latest article for @asm.org , I explore this phenomenon.
Link: asm.org/articles/202...

Flexible Microbial Respiration: Beyond the Oxygen Paradigm | ASM.org

Some microbes can simultaneously respire aerobically and anaerobically, a flexible strategy that reshapes our understanding of microbial metabolism.

asm.org

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Kartik Aiyer @kartiksaiyer.bsky.social · Jul 10

@leodigel.bsky.social

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Kartik Aiyer @kartiksaiyer.bsky.social · Jul 10

If you are interested in reading the "Behind the paper"story of how we discovered this electroactive microbe and simultaneous aerobic-anaerobic respiration, have a look at our blog post in the Nature Research Communities here: communities.springernature.com/posts/simult...

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Kartik Aiyer @kartiksaiyer.bsky.social · Jul 5

Sincere thanks to my coauthors Jamie, Naja and @leodigel.bsky.social.
Also thanks to a very constructive and engaging peer review by @natcomms.nature.com

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Kartik Aiyer @kartiksaiyer.bsky.social · Jul 5

Thrilled to share our latest work on simultaneous aerobic-anaerobic metabolism enabled by extracellular electron transfer. The microbe in focus, Microbacterium deferre A1-JK, was isolated from the oxic-anoxic sediment interface.
Link: www.nature.com/articles/s41...

Iron reduction under oxic conditions by Microbacterium deferre sp. nov. A1-JKT - Nature Communications

In this study, the authors show that Microbacterium deferre A1-JK, a newly isolated Gram-positive bacterium, simultaneously reduces oxygen and iron under oxic conditions, revealing unexpected microbia...

www.nature.com

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Kartik Aiyer @kartiksaiyer.bsky.social · Jul 4

Having mostly done experiments in the lab, I finally sat down with @ianpgm.bsky.social to learn some bioinformatics. I can now see why people do science on their computers - you don't need to get your hands dirty with mud. 😅😅😅

a cartoon of spongebob with the words horray finally

ALT: a cartoon of spongebob with the words horray finally

media.tenor.com

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Kartik Aiyer @kartiksaiyer.bsky.social · May 22

@lucindaedoyle.bsky.social

Kartik Aiyer @kartiksaiyer.bsky.social · May 22

Great to meet two of my amazing mentors at once at the Electromicrobiology conference. Two of the best people I had to the pleasure to work with. Thanks a lot @ianpgm.bsky.social and Lucinda for everything.

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Kartik Aiyer @kartiksaiyer.bsky.social · Mar 13

🚀🔬 Excited to take part in #ScienceIsWonderful festival at Africa Museum, Tervuren, Belgium. I'll present a #ScienceShow on electric cable bacteria. We also have experiments & games for all, with free entry: europa.eu/!F49vCw #MarieCurieFellowship #cablebacteria
@cemau.bsky.social

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Kartik Aiyer @kartiksaiyer.bsky.social · Mar 11

Our lab version of rock (mud), paper, scissors🤭. The mud always wins in our lab since it's special. @cemau.bsky.social
#sciencehumor

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Reposted by Kartik Aiyer

Ian Marshall @ianpgm.bsky.social · Mar 9

Last year I had the pleasure of working with Antonio Castellano-Hinojosa, who visited Aarhus to use metagenomics and metatranscriptomics to characterise a microbial fuel cell treating saline wastewater. The result of that collaboration has just been published: authors.elsevier.com/a/1kk9L14Z6t...

authors.elsevier.com

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Kartik Aiyer @kartiksaiyer.bsky.social · Mar 5

One of the most rewarding aspects in academia is working with bachelor’s students at the start of their research journey. Their enthusiasm, curiosity, and eagerness to learn are fantastic to see. Glad to be working with them on their projects. 🙏

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Kartik Aiyer @kartiksaiyer.bsky.social · Feb 18

Very nice work! Congrats

Leonid Digel @leodigel.bsky.social · Feb 18

Published online! Everything you wanted to know about different cable bacteria and their electrical conductivity. @cemau.bsky.social
doi.org/10.1038/s443...

Comparison of cable bacteria genera reveals details of their conduction machinery | EMBO reports

imageimageThis study uncovers key morphological and ultrastructural similarities between cable bacteria genera. The periplasmic conductive fibers display variable electrical conductivity, but conserve...

doi.org

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Kartik Aiyer @kartiksaiyer.bsky.social · Feb 10

It was wonderful attending the first A-ISMET conference in Egypt. Great to see the ISMET society going global. The cultural trip exploring Egypt's ancient civilization was fantastic. Plus there were some nice cable bacteria in the Red Sea!

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