Kathi Kitzinger
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kathikitzinger.bsky.social
Kathi Kitzinger
@kathikitzinger.bsky.social
environmental microbiologist fascinated by the unseen majority | scientist at division of microbial ecology, university of vienna
Reposted by Kathi Kitzinger
🚨 Postdoctoral Opportunity for Female Scientists🚨

The University of Vienna is awarding at least 20 fully funded 4 year postdoctoral positions to outstanding female scientists

Interested? Get in touch via direct message
careers.univie.ac.at/en/postdoc/e...

#MicroSky 🧪

#PostDoc @univie.ac.at
December 19, 2025 at 12:24 AM
Check out this awesome resource for all your future microbial #genome analyses:
#GlobDB is the to date most complete genome database available!

Developed by @daanspeth.bsky.social and colleagues 🧪🦠🧬🖥️
Our paper describing the GlobDB is now published in @bioinfoadv.bsky.social
doi.org/10.1093/bioa...

The GlobDB is the largest species dereplicated genome database currently available, containing 306,260 species representatives.
More information on globdb.org 1/5
🖥️🧬🦠
GlobDB: a comprehensive species-dereplicated microbial genome resource
AbstractMotivation. Over the past years, substantial numbers of microbial species’ genomes have been deposited outside of conventional INSDC databases.Resu
doi.org
December 30, 2025 at 4:33 PM
Reposted by Kathi Kitzinger
Interested in #nitrification? Check-out this new paper driven by the #MichaelPester group focussing on nitrification-driven chemolithoautotrophy in oligotrophic lake hypolimnia. Freshwater AOA contribute only a minor part to dark DIC fixation in these systems.

academic.oup.com/ismecommun/a...
Spatiotemporal and temperature-dependent disconnect between ammonia oxidation and dark DIC fixation in deep oligotrophic Lake Constance
Abstract. Deep oligotrophic lakes hold over 80% of global lake water. In their hypolimnion, ammonia oxidation (the first step of nitrification) and non-pho
academic.oup.com
December 2, 2025 at 1:05 PM
Reposted by Kathi Kitzinger
Fresh from our group, a new role for oxygen production in ammonia-oxidizing archaea:

Oxygen production as an electron overflow pathway in ammonia-oxidizing archaea

Congrats to Thomas Pribasnig for this great work!

Check it out here:
www.biorxiv.org/content/10.6...
December 5, 2025 at 12:42 PM
Reposted by Kathi Kitzinger
#Urea: The Hidden Fuel for Ocean Microbes 🦠🌊

Study in @natcomms.nature.com shows how #ammonia-oxidizing #archaea thrive in nutrient-poor waters: Urea is a major energy source for #AOA in the open #ocean, while coastal AOA prefer #ammonium.

www.mpi-bremen.de/en/Urea-The-...
December 11, 2025 at 12:29 PM
🧪🦠🌊
Curious on #niche differentiation of marine #AOA #Nitrosopumilus and #Nitrosopelagicus?
#Urea is (part of) the answer!

Very happy this fun study led by
@mpimarinemicrobio.bsky.social is out:
shorturl.at/wajjh

Big shout out to Joerdis and Hannah for pushing this over the finish line!
Urea use drives niche separation between dominant marine ammonia oxidizing archaea - Nature Communications
Two groups of ammonia-oxidizing archaea drive marine nitrification. Stuehrenberg et al. reveal that their distribution reflects substrate use, with one relying on urea and the other on ammonia to main...
www.nature.com
December 11, 2025 at 11:02 AM
Reposted by Kathi Kitzinger
New @fwf-at.bsky.social CoE Microplanet study introduces GlobDB globdb.org, a comprehensive database integrating 14 genomic catalogues providing consistent taxonomy for microbial species.
academic.oup.com/bioinformati...
December 10, 2025 at 12:43 PM
Reposted by Kathi Kitzinger
My fantastic department at CU Boulder is hiring a tenure-track Assistant Professor! This is a broad search spanning nearly all areas of biology. Applications are due Nov 13, 2025. Feel free to reach out to me with questions, and please share widely.
jobs.colorado.edu/jobs/JobDeta...
October 17, 2025 at 4:00 PM
🚨Exciting 🧪👩‍🎓🦠 job alert 🚨
Postdoc position on dark microbial O2 production in marine oxygen minimum zones with Bo Thamdrup and @beatekraft.bsky.social at @sdu.dk

Love fieldwork, stable isotopes, the sea and a fantastic team? Then apply -> fa-eosd-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/Candid...
Postdoc on microbial oxygen production in marine oxygen minimum zones
Application deadline: 17 November 2025 at 23:59 hours local Danish time
fa-eosd-saasfaprod1.fa.ocs.oraclecloud.com
October 18, 2025 at 8:58 AM
Still 10 days left to apply! 🦠🧪👩‍🎓🔬
Come work with my team in beautiful Vienna!
🚨3-yr Postdoc Position on #SingleCell Activities in #Marine #N-Cycling🦠🧪👩‍🎓🔬

Join me @univie.ac.at @dome-vienna.bsky.social
Part of our ERC Synergy #RECLESS looking at microbes in marine oxygen minimum zones

Apply by Oct 15, start March 2026!

-> ucloud.univie.ac.at/index.php/s/...
RECLESS_Postdoc_single_cell_UniVie.pdf
u:cloud - Ihre Daten, auf Wolken gebettet.
ucloud.univie.ac.at
October 5, 2025 at 2:29 PM
Still 10 days left to apply! 🦠🧪👩‍🎓🔬
Come work with my team in beautiful Vienna!
🚨4yr Technical Assistant Position on #Microbial Activities in #Marine #N-Cycling🦠🧪👩‍🎓🔬

Join me @univie.ac.at @dome-vienna.bsky.social
Part of our ERC Synergy #RECLESS looking at microbes in marine oxygen minimum zones

Apply by Oct 15, start March 2026!

-> ucloud.univie.ac.at/index.php/s/...
RECLESS_TA_molecular_UniVie.pdf
u:cloud - Ihre Daten, auf Wolken gebettet.
ucloud.univie.ac.at
October 5, 2025 at 2:29 PM
Reposted by Kathi Kitzinger
New preprint from our team! Experimental evidence that ammonia-oxidizing archaea in sponges use branched chain amino acids as substrates - possibly also key for host interaction

#Nitrification
#MicroSky 🧪 #ArchaeaSky
@bglasl.bsky.social @kathikitzinger.bsky.social

www.biorxiv.org/content/10.1...
September 10, 2025 at 8:30 PM
Reposted by Kathi Kitzinger
Who fixes carbon in the dark ocean? A new study in @nature.com, led by @barbarabayer.bsky.social @univie.ac.at shows that ammonia‐oxidizing microbes contribute much less to dark carbon fixation than previously thought – leaving room for unknown players.
Read more: 🔗 dome.univie.ac.at/news-events/...
Who fixes carbon in the dark ocean?
A new study led by Barbara Bayer (CeMESS, University of Vienna) discovered that ammonia-oxidizing microorganisms contribute much less to carbon fixation in the ocean than previously assumed. The study...
dome.univie.ac.at
September 23, 2025 at 9:47 AM
Reposted by Kathi Kitzinger
Surprising finding:

#Nitrobacter can dynamically modulate nitrite affinity in response to both nitrite concentration and pH, conferring a flexible adaptation strategy

Great collaboration with the Sung-Keun Rhee lab

#MicroSky 🧪 #nitrification #kinetics

www.biorxiv.org/content/10.1...
Kinetic Plasticity of Nitrite-Oxidizing Bacteria Containing Cytoplasmic Nitrite Oxidoreductase
Nitrite oxidation, the second step of nitrification, is essential to the global nitrogen cycle. Nitrite-oxidizing bacteria (NOB) are classified into two groups based on the cellular localization of th...
www.biorxiv.org
August 5, 2025 at 9:30 PM
Reposted by Kathi Kitzinger
🚨 2 funded #PhD positions (ERC Adv Grant) in the Moissl-Eichinger Lab, Graz! Study Methanobrevibacter as a keystone in the gut microbiome.
💡 Omics, modeling, synthetic consortia
📅 Deadline: Sept 10, 2025
🌍 Int’l applicants welcome!
Application link below.
#microbiomesky #archaeasky #microsky
August 5, 2025 at 6:45 AM
🚨4yr Technical Assistant Position on #Microbial Activities in #Marine #N-Cycling🦠🧪👩‍🎓🔬

Join me @univie.ac.at @dome-vienna.bsky.social
Part of our ERC Synergy #RECLESS looking at microbes in marine oxygen minimum zones

Apply by Oct 15, start March 2026!

-> ucloud.univie.ac.at/index.php/s/...
RECLESS_TA_molecular_UniVie.pdf
u:cloud - Ihre Daten, auf Wolken gebettet.
ucloud.univie.ac.at
August 4, 2025 at 10:50 AM
🚨3-yr Postdoc Position on #SingleCell Activities in #Marine #N-Cycling🦠🧪👩‍🎓🔬

Join me @univie.ac.at @dome-vienna.bsky.social
Part of our ERC Synergy #RECLESS looking at microbes in marine oxygen minimum zones

Apply by Oct 15, start March 2026!

-> ucloud.univie.ac.at/index.php/s/...
RECLESS_Postdoc_single_cell_UniVie.pdf
u:cloud - Ihre Daten, auf Wolken gebettet.
ucloud.univie.ac.at
August 4, 2025 at 10:48 AM
Reposted by Kathi Kitzinger
Great podcast recording with Nicole Geerlings for #MattersMicrobial about weird and wonderful cable bacteria! I truly enjoyed the session. Releasing next week. @nmjgeerlings.bsky.social
July 18, 2025 at 2:47 AM
Reposted by Kathi Kitzinger
CeMESS is hiring!

Join us at the Division of Terrestrial Ecosystem Research (@ter-cemess.bsky.social) as Full Professor of SOIL ECOSYSTEMS AND GLOBAL CHANGE. Collaborate across a leading institution in microbiome science and environmental research.

🔗 Learn more: cemess.univie.ac.at/news/detail-...
We are hiring: Full Professor of Soil Ecosystems and Global Change
Soil ecosystems form the foundation of planetary health and play a critical role in climate feedback mechanisms. However, they are also vulnerable to the impacts of global change.
cemess.univie.ac.at
July 7, 2025 at 9:37 AM
Reposted by Kathi Kitzinger
We're hiring! Join CeMESS @univie.ac.at as a DATA STEWARD and help shape the future of research data management. Collaborate with top researchers and drive innovation in Open Science.

Apply now! 🔗 cemess.univie.ac.at/career-educa...
Data Steward
The University of Vienna plans to expand the existing Research Data Management services by offering discipline-specific support through a new Data Stewardship program tailored to meet the discipline-s...
cemess.univie.ac.at
July 10, 2025 at 2:42 PM
Reposted by Kathi Kitzinger
CeMESS is hiring!

Join us at the Division of Environmental Geosciences (@edge-vienna.bsky.social) as Full Professor of ENVIRONMENTAL BIOGEOCHEMISTRY OF METALS. Collaborate across a leading institution in microbiome science and environmental research.

🔗 Learn more and apply: tinyurl.com/47bev45k
We are hiring: Full Professor of Environmental Biogeochemistry of Metals
Human activities are driving rapid environmental change on a global scale, with pollutants playing a critical role in pushing planetary systems beyond safe limits. These changes have profound conseque...
cemess.univie.ac.at
July 9, 2025 at 9:31 AM
Open postdoc position combining all the good things: #Ocean, #Nitrogen-cycling, #OxygenMinimumZones, #Biogeochemistry🧪🌊🔬

Check out this postdoc opening with my great colleague and friend #LauraBristow at #Uni #Gothenburg - part of our ERC Synergy #RECLESS: web103.reachmee.com/ext/I005/103...
Postdoctoral Researcher in Microbial Nitrogen Cycling in Oxygen-Depleted Waters
The Department of Marine Sciences, University of Gothenburg, (https://www.gu.se/en/marina-vetenskaper The Department of Marine Sciences conducts
web103.reachmee.com
July 15, 2025 at 5:15 PM
Reposted by Kathi Kitzinger
Big congratulations to Dagmar Woebken (@dagmarwoebken.bsky.social) who has been awarded an #ERC Advanced Grant for her project "WinMicAct" to explore how desert microbes thrive on non-rainwater.

🔗 More info: cemess.univie.ac.at/news/detail-...
ERC Advanced Grant awarded to Dagmar Woebken
CeMESS Assoc Prof. Dagmar Woebken has secured a highly competitive ERC Advanced Grant for her project 'Windows of microbial activity in deserts afforded by non-rain water (WinMicAct)'.
cemess.univie.ac.at
June 25, 2025 at 2:14 PM
Reposted by Kathi Kitzinger
#ASTRA-Preise zum ersten Mal vergeben: Der FWF vergibt 22 Millionen Euro für aufstrebende Spitzenforscher:innen. 🌟
Die neuen Preise ermöglichen 18 fortgeschrittenen Postdocs den Sprung an die Spitze ihres Forschungsfelds. Wir gratulieren herzlich! 👏

www.fwf.ac.at/aktuelles/de...
FWF-ASTRA-Preise: 22 Millionen Euro für aufstrebende Spitzenforscher:innen
Hochtalentierte Forschende im internationalen Wettbewerb halten und gewinnen: Die neuen FWF-ASTRA-Preise mit einem Fördervolumen von je rund einer Million Euro ermöglichen fortgeschrittenen Postdocs d...
www.fwf.ac.at
June 25, 2025 at 5:14 PM
Reposted by Kathi Kitzinger
A short preprint describing the GlobDB is now on arXiv: arxiv.org/abs/2506.11896

If you find the resource useful, please also check globdb.org for info on how to cite the underlying resources and tools.
I'm happy to announce the latest release of the GlobDB, available at globdb.org.

The GlobDB is a database of "species dereplicated" microbial genomes, and as of release 226 contains twice the number of species-representative genomes (306,260) than the latest GTDB release.
home | GlobDB
globdb.org
June 16, 2025 at 8:44 PM