Krzysztof T Jurdzinski
@ktjurdzinski.bsky.social
PhD student at Anders Andersson's lab at KTH/SciLifeLab, Stockholm. Microbial ecologist, evolutionary biologist, bioinformatician.
https://ktjmicrobes.com/
https://ktjmicrobes.com/
Pinned
Distinct bacterial and protist plankton diversity dynamics uncovered through DNA-based monitoring in the Baltic Sea area
Planktonic microorganisms in coastal waters form the base of food webs and biogeochemical cycles. The Baltic Sea area, with its pronounced environmental gradients, serves as a model coastal environmen...
www.biorxiv.org
1/10
The latest preprint in my PhD just went through a major internal revision. More focused and less confounded, it deserves re-introduction.
Highlight still the same: Bacteria are ecologically more sensitive to salinity than protists.
www.biorxiv.org/content/10.1...
#MicroSky #ProtistsOnSky
The latest preprint in my PhD just went through a major internal revision. More focused and less confounded, it deserves re-introduction.
Highlight still the same: Bacteria are ecologically more sensitive to salinity than protists.
www.biorxiv.org/content/10.1...
#MicroSky #ProtistsOnSky
Reposted by Krzysztof T Jurdzinski
New paper out looking at mycobacterial diversity across soils, premise plumbing, and surface waters to try to figure out the source of environmentally-acquired mycobacterial infections: journals.asm.org/doi/epdf/10....
A cross-environment comparison of nontuberculous mycobacterial diversity
journals.asm.org
December 8, 2025 at 7:09 PM
New paper out looking at mycobacterial diversity across soils, premise plumbing, and surface waters to try to figure out the source of environmentally-acquired mycobacterial infections: journals.asm.org/doi/epdf/10....
Reposted by Krzysztof T Jurdzinski
Respiratory endosymbionts, that allow their ciliate hosts to breathe nitrate instead of (or in addition to) oxygen are frequent members of the wastewater microbiome. 🦠 🖥️🧬
Great to see this work by @louison-nicolas.bsky.social published in ISME coummuncations!
doi.org/10.1093/isme...
Great to see this work by @louison-nicolas.bsky.social published in ISME coummuncations!
doi.org/10.1093/isme...
Validate User
doi.org
December 5, 2025 at 4:20 PM
Respiratory endosymbionts, that allow their ciliate hosts to breathe nitrate instead of (or in addition to) oxygen are frequent members of the wastewater microbiome. 🦠 🖥️🧬
Great to see this work by @louison-nicolas.bsky.social published in ISME coummuncations!
doi.org/10.1093/isme...
Great to see this work by @louison-nicolas.bsky.social published in ISME coummuncations!
doi.org/10.1093/isme...
Reposted by Krzysztof T Jurdzinski
New publication: Functional diversity of #soil microbial communities increases with ecosystem development, by @ehannula.bsky.social and others. #landabandonment #landusechange #carboncycle
doi.org/10.1038/s414...
doi.org/10.1038/s414...
December 5, 2025 at 10:22 AM
New publication: Functional diversity of #soil microbial communities increases with ecosystem development, by @ehannula.bsky.social and others. #landabandonment #landusechange #carboncycle
doi.org/10.1038/s414...
doi.org/10.1038/s414...
Reposted by Krzysztof T Jurdzinski
One more week to apply to this PhD position on working out an endosymbiosis relationship in a protist. Please share widely to prospective PhD student #protistsonsky
We are looking for a PhD student to work on an exciting plastid endosymbiosis in microbial eukaryotes. This position involves sampling, exciting microscopy such as CARDFISH, ExM and FIBSEM, single-cell transcriptomics and more. #protistsonsky 1/2
December 5, 2025 at 8:48 AM
One more week to apply to this PhD position on working out an endosymbiosis relationship in a protist. Please share widely to prospective PhD student #protistsonsky
Reposted by Krzysztof T Jurdzinski
Dramatic decline of Sargassum in the north Sargasso Sea since 2015 www.nature.com/articles/s41... #jcampubs 🌊
Dramatic decline of Sargassum in the north Sargasso Sea since 2015 - Nature Geoscience
Sargassum biomass in the north Sargasso Sea declined drastically since 2015, co-occurring with related reductions in the northwest Gulf of Mexico and an expansion of the Great Atlantic Sargassum Belt,...
www.nature.com
December 4, 2025 at 2:01 PM
Dramatic decline of Sargassum in the north Sargasso Sea since 2015 www.nature.com/articles/s41... #jcampubs 🌊
Reposted by Krzysztof T Jurdzinski
Microflora Danica: What can you learn from collecting and sequencing 10,000+ samples from a single country? Check out our new paper in @nature.com to find out. Incredible work led by Caitlin Singleton, Thomas B. N. Jensen, and Mads Albertsen from @aau.dk. 🦠🧫🧬
www.nature.com/articles/s41...
www.nature.com/articles/s41...
The Microflora Danica atlas of Danish environmental microbiomes - Nature
Microflora Danica—an atlas of Danish environmental microbiomes—reveals that although human-disturbed habitats have high alpha diversity, species reoccur, revealing hidden homogeneity.
www.nature.com
December 3, 2025 at 8:50 PM
Microflora Danica: What can you learn from collecting and sequencing 10,000+ samples from a single country? Check out our new paper in @nature.com to find out. Incredible work led by Caitlin Singleton, Thomas B. N. Jensen, and Mads Albertsen from @aau.dk. 🦠🧫🧬
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by Krzysztof T Jurdzinski
A promising route toward safer #plastics is now presented in @natsustain.nature.com 🧪🌎
“Chemical #pollution is one of the major global #EnvironmentalChallenges we face today,” says Oskar Karlsson, SciLifeLab/@stockholm-uni.bsky.social
More ↓
www.scilifelab.se/news/on-the-...
#BPA
“Chemical #pollution is one of the major global #EnvironmentalChallenges we face today,” says Oskar Karlsson, SciLifeLab/@stockholm-uni.bsky.social
More ↓
www.scilifelab.se/news/on-the-...
#BPA
On the hunt for safer and more sustainable plastics
BPA-based plastics have been shown to have health concerns, a promising route toward safer plastics is now presented in a study published in Nature Sustainability.
www.scilifelab.se
December 4, 2025 at 10:21 AM
A promising route toward safer #plastics is now presented in @natsustain.nature.com 🧪🌎
“Chemical #pollution is one of the major global #EnvironmentalChallenges we face today,” says Oskar Karlsson, SciLifeLab/@stockholm-uni.bsky.social
More ↓
www.scilifelab.se/news/on-the-...
#BPA
“Chemical #pollution is one of the major global #EnvironmentalChallenges we face today,” says Oskar Karlsson, SciLifeLab/@stockholm-uni.bsky.social
More ↓
www.scilifelab.se/news/on-the-...
#BPA
Reposted by Krzysztof T Jurdzinski
It is an honour to receive this amazing support by the @kawresearch.bsky.social to decipher interactions between plasmid-dependent phages, plasmids and their shared bacterial host! Excited to work on this topic and explore the secrets of their coevolution!
#ECOPHARM
#ECOPHARM
Another 27 promising researchers will now receive five-year basic research grants from Knut and Alice Wallenberg Foundation. This funding provides researchers in the beginning of their careers with the opportunity to contribute groundbreaking new knowledge
#research #science
tinyurl.com/yu4svfjh
#research #science
tinyurl.com/yu4svfjh
Long-term research grants awarded to 27 new Wallenberg Academy Fellows | Knut and Alice Wallenberg Foundation
tinyurl.com
December 3, 2025 at 2:11 PM
It is an honour to receive this amazing support by the @kawresearch.bsky.social to decipher interactions between plasmid-dependent phages, plasmids and their shared bacterial host! Excited to work on this topic and explore the secrets of their coevolution!
#ECOPHARM
#ECOPHARM
Reposted by Krzysztof T Jurdzinski
Global survey: Your perspective can directly shape the Roadmap for Citizen Action on #NbS — a guide that policymakers will use to understand what communities need to restore and protect nature.
Take the survey before 15 January.
➡️ thenatureofcities.typeform.com/to/iM8zPyV7
Take the survey before 15 January.
➡️ thenatureofcities.typeform.com/to/iM8zPyV7
December 2, 2025 at 9:11 AM
Global survey: Your perspective can directly shape the Roadmap for Citizen Action on #NbS — a guide that policymakers will use to understand what communities need to restore and protect nature.
Take the survey before 15 January.
➡️ thenatureofcities.typeform.com/to/iM8zPyV7
Take the survey before 15 January.
➡️ thenatureofcities.typeform.com/to/iM8zPyV7
Reposted by Krzysztof T Jurdzinski
Rubisco is slow across the tree of life
#photosynthesis #plants
@pnas.org
www.pnas.org/doi/10.1073/...
#photosynthesis #plants
@pnas.org
www.pnas.org/doi/10.1073/...
Rubisco is slow across the tree of life | PNAS
Rubisco is the main gateway through which inorganic carbon enters the biosphere, catalyzing
the vast majority of carbon fixation on Earth. This piv...
www.pnas.org
December 1, 2025 at 3:34 PM
Rubisco is slow across the tree of life
#photosynthesis #plants
@pnas.org
www.pnas.org/doi/10.1073/...
#photosynthesis #plants
@pnas.org
www.pnas.org/doi/10.1073/...
Reposted by Krzysztof T Jurdzinski
Reposted by Krzysztof T Jurdzinski
Unveiling the global #urban #virome through #wastewater #metagenomics ...
| #virus | #pathogens | #epidemiology | #gastrointestinal | Via @nature.com
| #virus | #pathogens | #epidemiology | #gastrointestinal | Via @nature.com
Unveiling the global urban virome through wastewater metagenomics - Nature Communications
Wastewater-based surveillance tends to focus on specific pathogens. Here, the authors mapped the wastewater virome from 62 cities worldwide to identify over 2,500 viruses, revealing city-specific…
www.nature.com
December 1, 2025 at 10:00 AM
Unveiling the global #urban #virome through #wastewater #metagenomics ...
| #virus | #pathogens | #epidemiology | #gastrointestinal | Via @nature.com
| #virus | #pathogens | #epidemiology | #gastrointestinal | Via @nature.com
Reposted by Krzysztof T Jurdzinski
Our world is one of impetuous life; once a new niche open, by a volcanic island or (now more often) retreating glaciers, generalist, metabolically flexible, microbial life will rush in to inhabit it and be the base of future succession. 🧪
Link: www.nature.com/articles/s41...
Link: www.nature.com/articles/s41...
November 27, 2025 at 5:29 PM
Our world is one of impetuous life; once a new niche open, by a volcanic island or (now more often) retreating glaciers, generalist, metabolically flexible, microbial life will rush in to inhabit it and be the base of future succession. 🧪
Link: www.nature.com/articles/s41...
Link: www.nature.com/articles/s41...
Reposted by Krzysztof T Jurdzinski
Need to predict whether a given contig in your assembly was circular in the environment?
Here is a new program in #anvio ecosystem that will look into your BAM file and use paired-end read mapping data to conservatively assess circularity:
anvio.org/help/main/pr...
Here is a new program in #anvio ecosystem that will look into your BAM file and use paired-end read mapping data to conservatively assess circularity:
anvio.org/help/main/pr...
anvi-report-circularity
An anvi'o program. Predict contig circularity from paired-end read alignments in a given BAM file.
anvio.org
November 28, 2025 at 9:11 AM
Need to predict whether a given contig in your assembly was circular in the environment?
Here is a new program in #anvio ecosystem that will look into your BAM file and use paired-end read mapping data to conservatively assess circularity:
anvio.org/help/main/pr...
Here is a new program in #anvio ecosystem that will look into your BAM file and use paired-end read mapping data to conservatively assess circularity:
anvio.org/help/main/pr...
Reposted by Krzysztof T Jurdzinski
📢 New preprint on bioRxiv!
We introduce V4-EXT, a revised 16S rRNA V4 primer set that dramatically improves detection of Patescibacteria and other undersampled lineages
✅ 938 samples
✅ More novel ASVs
Primer choice matters 👀
www.biorxiv.org/content/10.1...
@ppjevac.bsky.social #HuifengHu
We introduce V4-EXT, a revised 16S rRNA V4 primer set that dramatically improves detection of Patescibacteria and other undersampled lineages
✅ 938 samples
✅ More novel ASVs
Primer choice matters 👀
www.biorxiv.org/content/10.1...
@ppjevac.bsky.social #HuifengHu
November 27, 2025 at 5:38 PM
📢 New preprint on bioRxiv!
We introduce V4-EXT, a revised 16S rRNA V4 primer set that dramatically improves detection of Patescibacteria and other undersampled lineages
✅ 938 samples
✅ More novel ASVs
Primer choice matters 👀
www.biorxiv.org/content/10.1...
@ppjevac.bsky.social #HuifengHu
We introduce V4-EXT, a revised 16S rRNA V4 primer set that dramatically improves detection of Patescibacteria and other undersampled lineages
✅ 938 samples
✅ More novel ASVs
Primer choice matters 👀
www.biorxiv.org/content/10.1...
@ppjevac.bsky.social #HuifengHu
Reposted by Krzysztof T Jurdzinski
The surprising crab-trap–pulling behavior is described in this article: onlinelibrary.wiley.com/doi/10.1002/...
We recently published a paper on how animal tool use is conceptualized, offering a framework to make sense of its different forms 👇📃 www.cambridge.org/core/journal... #evosky #philsci
We recently published a paper on how animal tool use is conceptualized, offering a framework to make sense of its different forms 👇📃 www.cambridge.org/core/journal... #evosky #philsci
November 27, 2025 at 5:17 PM
The surprising crab-trap–pulling behavior is described in this article: onlinelibrary.wiley.com/doi/10.1002/...
We recently published a paper on how animal tool use is conceptualized, offering a framework to make sense of its different forms 👇📃 www.cambridge.org/core/journal... #evosky #philsci
We recently published a paper on how animal tool use is conceptualized, offering a framework to make sense of its different forms 👇📃 www.cambridge.org/core/journal... #evosky #philsci
Reposted by Krzysztof T Jurdzinski
I am very excited to announce that a fully funded PhD position is available in my group.
Topic: Synergistic coevolution in mono-specific and multi-species microbial consortia
Please RT or forward this information to interested candidates.
Deadline: 11.01.26
More info:
shorturl.at/f1TuF
Topic: Synergistic coevolution in mono-specific and multi-species microbial consortia
Please RT or forward this information to interested candidates.
Deadline: 11.01.26
More info:
shorturl.at/f1TuF
November 27, 2025 at 2:24 PM
I am very excited to announce that a fully funded PhD position is available in my group.
Topic: Synergistic coevolution in mono-specific and multi-species microbial consortia
Please RT or forward this information to interested candidates.
Deadline: 11.01.26
More info:
shorturl.at/f1TuF
Topic: Synergistic coevolution in mono-specific and multi-species microbial consortia
Please RT or forward this information to interested candidates.
Deadline: 11.01.26
More info:
shorturl.at/f1TuF
Reposted by Krzysztof T Jurdzinski
I am very excited to start my new position as a Ramón y Cajal fellow @ageinves.bsky.social @cienciagob.bsky.social at the ICBiBE @uv.es! I'm coming home! It feels great to deliver new science for my country!
November 27, 2025 at 1:37 PM
I am very excited to start my new position as a Ramón y Cajal fellow @ageinves.bsky.social @cienciagob.bsky.social at the ICBiBE @uv.es! I'm coming home! It feels great to deliver new science for my country!
Reposted by Krzysztof T Jurdzinski
Optimized k-mer search across millions of bacterial genomes on laptops https://www.biorxiv.org/content/10.1101/2025.11.23.690050v1
November 26, 2025 at 4:47 PM
Optimized k-mer search across millions of bacterial genomes on laptops https://www.biorxiv.org/content/10.1101/2025.11.23.690050v1
Reposted by Krzysztof T Jurdzinski
Our new paper in PNAS summarises why the push to 'salvage' log dead trees won't reduce the risk of fast wildfires as has been claimed.
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
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
November 24, 2025 at 11:36 PM
Our new paper in PNAS summarises why the push to 'salvage' log dead trees won't reduce the risk of fast wildfires as has been claimed.
www.pnas.org/doi/10.1073/...
www.pnas.org/doi/10.1073/...
Reposted by Krzysztof T Jurdzinski
Come join us! Soon I will be advertising a postdoc vacancy in my group as part of my @erc.europa.eu AdG project 'DARK ROOTS'. Focus of the project will be on phylo- and metagenomic mining of novel prokaryotic lineages. I will soon post a link here - stay tuned, and please repost! #asgardarchaea
a man walking in a field with an umbrella
ALT: a man walking in a field with an umbrella
media.tenor.com
November 26, 2025 at 3:39 PM
Come join us! Soon I will be advertising a postdoc vacancy in my group as part of my @erc.europa.eu AdG project 'DARK ROOTS'. Focus of the project will be on phylo- and metagenomic mining of novel prokaryotic lineages. I will soon post a link here - stay tuned, and please repost! #asgardarchaea
Reposted by Krzysztof T Jurdzinski
Overestimated natural biological nitrogen fixation translates to an exaggerated CO2 fertilisation effect in Earth system models
...meaning models may overestimate future plant carbon uptake as CO2 rises
Better nitrogen modelling = better climate predictions
www.pnas.org/doi/10.1073/...
...meaning models may overestimate future plant carbon uptake as CO2 rises
Better nitrogen modelling = better climate predictions
www.pnas.org/doi/10.1073/...
Overestimated natural biological nitrogen fixation translates to an exaggerated CO2 fertilization effect in Earth system models | PNAS
CO2 fertilization of the terrestrial biosphere is limited by nitrogen. Biological
nitrogen fixation (BNF) is the dominant natural nitrogen source t...
www.pnas.org
November 25, 2025 at 8:40 PM
Overestimated natural biological nitrogen fixation translates to an exaggerated CO2 fertilisation effect in Earth system models
...meaning models may overestimate future plant carbon uptake as CO2 rises
Better nitrogen modelling = better climate predictions
www.pnas.org/doi/10.1073/...
...meaning models may overestimate future plant carbon uptake as CO2 rises
Better nitrogen modelling = better climate predictions
www.pnas.org/doi/10.1073/...
Reposted by Krzysztof T Jurdzinski
Just uploaded our new preprint to @ecoevorxiv.bsky.social
Multinucleate life really is everywhere...from deep sea forams to slime molds, intracellular parasites, and beyond. 🚀
We explore how scaling, ecology, & evolution intersect when many nuclei share a single cytoplasm.
doi.org/10.32942/X2M...
Multinucleate life really is everywhere...from deep sea forams to slime molds, intracellular parasites, and beyond. 🚀
We explore how scaling, ecology, & evolution intersect when many nuclei share a single cytoplasm.
doi.org/10.32942/X2M...
November 26, 2025 at 3:06 PM
Just uploaded our new preprint to @ecoevorxiv.bsky.social
Multinucleate life really is everywhere...from deep sea forams to slime molds, intracellular parasites, and beyond. 🚀
We explore how scaling, ecology, & evolution intersect when many nuclei share a single cytoplasm.
doi.org/10.32942/X2M...
Multinucleate life really is everywhere...from deep sea forams to slime molds, intracellular parasites, and beyond. 🚀
We explore how scaling, ecology, & evolution intersect when many nuclei share a single cytoplasm.
doi.org/10.32942/X2M...
Reposted by Krzysztof T Jurdzinski
The cold water tintinnid ciliate Parafavella elegans & some diatoms from the Chukchi Sea last summer- almost the end of the Arctic samples....
November 26, 2025 at 1:57 PM
The cold water tintinnid ciliate Parafavella elegans & some diatoms from the Chukchi Sea last summer- almost the end of the Arctic samples....
Reposted by Krzysztof T Jurdzinski
So happy to announce our new preprint, “A geothermal amoeba sets a new upper temperature limit for eukaryotes.” We cultured a novel amoeba from Lassen Volcanic NP (CA, USA) that divides at 63°C (145°F) 🔥 - a new record for euk growth!
#protistsonsky 🧵
#protistsonsky 🧵
November 25, 2025 at 8:41 PM
So happy to announce our new preprint, “A geothermal amoeba sets a new upper temperature limit for eukaryotes.” We cultured a novel amoeba from Lassen Volcanic NP (CA, USA) that divides at 63°C (145°F) 🔥 - a new record for euk growth!
#protistsonsky 🧵
#protistsonsky 🧵