Sign in

Wilhelm Lab at the University of Tennessee

@tn-marine-micro.bsky.social
231 followers 77 following 64 posts

Viruses, bacteria, algae, and an unusual fondness for water.

PostsRepliesMedia
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 17/09/2026
New preprint: Vibrio natriegens carries three katG catalase-peroxidase genes—an unusual expansion that helps it survive environmentally relevant H₂O₂ during nutrient starvation. All three contribute, with RpoS also shaping protection. doi.org/10.64898/202... A fun interlab collaboration.
doi.org
030
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 08/09/2026
Happy Star Trek Day! We just all need to admit that Gene Roddenberry pretty much thought of everything before it happened.
010
Reposted by Wilhelm Lab at the University of Tennessee
Curtis Suttle @virosphere.bsky.social · 13/08/2026
Professor in Bacteriophage Biology & Evolution at the University of British Columbia (UBC). Closing date 1 October, with an expected start date no earlier than January 1, 2027, and a salary within the range of $200,000 to $270,000 per year. For details: ubc.wd10.myworkdayjobs.com/en-US/ubcfac...
25685
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 27/07/2026
Just moving this back to the top of everyone's in box. Will starting reviewing applications next week!
000
Reposted by Wilhelm Lab at the University of Tennessee
James Dinneen @jamesdinneen.bsky.social · 20/07/2026
Hello friends. I'm starting a new job today reporting for @nature.com on all things climate and Earth science, energy, and beyond.🌍Please get in touch if you're a researcher/gov staffer/startup with results/projects that deserve attention--or are facing problems we should know about. Contact in bio.
724059
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 25/06/2026
We’re hiring! A joint Postdoc at UT Knoxville (Wilhelm & @dtalmy.bsky.social) to study Microcystis, oxidative stress, toxin production, and nutrient selection using lab, field, molecular, and modeling approaches. PhD required. Apply: fa-ewlq-saasfaprod1.fa.ocs.oraclecloud.com/hcmUI/Candid...
fa-ewlq-saasfaprod1.fa.ocs.oraclecloud.com
Post-Doctoral Research Associate: Freshwater Microbial Ecology - UTK
The Wilhelm and Talmy research groups in the Department of Microbiology at the University of Tennessee invites applications for a Postdoctoral Research Fellow to join an interdisciplinary project exam...
135
Reposted by Wilhelm Lab at the University of Tennessee
Trina McMahon @quendi.bsky.social · 23/06/2026
Exciting new opportunity! Quick turnaround wellcomeleap.org/resistance-n...
wellcomeleap.org
Resistance Networks | Wellcome Leap: Unconventional Projects. Funded at Scale.
NEW $50M PROGRAM APPLY NOW We are pleased to announce the selected performers.PI Name, PI InstitutionPI Name, PI InstitutionPI Name, PI InstitutionPI Name, ...
001
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 16/06/2026
For >25 years our lab has worked on cyanotoxins and viruses - separately. Now with the Erik Zinser and @dtalmy.bsky.social groups, we show how conditions that enhance toxin production also enhance phage resistance. A coincidence or an intriguing co-occurrence? journals.asm.org/doi/10.1128/...
journals.asm.org
Acclimation temperature influences phage susceptibility in a toxin-producing strain of Microcystis aeruginosa | Microbiology Spectrum
Harmful cyanobacterial blooms frequently develop in aquatic systems, causing significant ecological and commercial impact, motivating research into factors influencing bloom formation, persistence, an...
062
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 03/06/2026
Coverage of the Trends in Ecology and Evolution horizon scan put out by our international team.
uwindsor.ca
What makes a lake turn toxic? UWindsor is part of a global team trying to find out
<p><em>By Sara Elliott&nbsp;</em></p> <p>University of Windsor researchers have partnered with global experts to write a five-year action plan aimed at understanding the risk of highly toxic blue-gre...
010
Reposted by Wilhelm Lab at the University of Tennessee
Joshua Weitz @joshuasweitz.bsky.social · 29/05/2026
Viruses are highly abundant in the oceans, but there is one place you won't typically find them: in global ocean ecosystem models... until now. Introducing "vDarwin", an explicit integration of viruses into the MITgcm/Darwin global ecosystem framework: www.biorxiv.org/content/10.6... a 🧵
Integration of a model of viral lysis, shunt and shuttle in a large scale ocean circulation model. (A) Schematic of the large scale ocean circulation model (MITgcm): major surface ocean circulation patterns and the schematic of the advection/diffusion are represented. Note that vertical grid spacing increases with depth (i.e., layers become thicker). (B) Simplified ecosystem represented in the study. For simplicity nitrogen remineralization to nitrite and nitrate and mortality fluxes to DOM and POM are not represented. (C) Schematic of the vDarwin ecosystem model integrated in the large scale circulation model. It represents a simplification of the ecosystem presented in (B) assuming that N is the limiting nutrient. It includes the growth of a single phytoplankton type, viral lysis, zooplankton grazing, the viral shunt and shuttle and remineralization (note that remineralizing bacteria are not explicitly represented).
45625
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 02/06/2026
The Horizon Scan for Harmful Cyanobacteria is online at TREE. A global collective of experts charted a 5 year plan to combat toxic blooms. Understanding strains, metabolism, microbiomes, nutrients and predators are all part of the story. www.sciencedirect.com/science/arti...
sciencedirect.com
Scanning the horizon for harmful cyanobacterial blooms
Harmful cyanobacterial blooms are increasing worldwide, threatening freshwater ecosystems, animal health, and human well-being. To guide research need…
021
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 27/05/2026
Fun watching @zepernickbn.bsky.social give the award presentation for the Daylight Award as Mike McKay and I look on and celebrate.
030
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 21/05/2026
To follow on the last post Professor McKay @uwindsor.bsky.social was on CBC Radio in Windsor this morning talking about the Daylight Award. www.cbc.ca/listen/live-...
cbc.ca
000
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 20/05/2026
Excited for this award with @zepernickbn.bsky.social and Professor McKay @uwindsor.bsky.social. Rewarding research published with @isme-microbes.bsky.social and more clearly explained in @theconversation.com. www.uwindsor.ca/news/2026-05... doi.org/10.1093/isme... doi.org/10.64628/AAI...
uwindsor.ca
As Great Lakes lose ice, a UWindsor researcher makes the consequences visible — and wins an international prize for it
<p><em>By Sara Elliott </em></p> <p>As climate change strips ice from the Great Lakes, something less visible is also changing: the underwater world of light that microscopic life depends on.  </p> ...
194
Reposted by Wilhelm Lab at the University of Tennessee
Joshua Weitz @joshuasweitz.bsky.social · 01/05/2026
New opportunity for PhD fellowships at interface of ecology & evolution from the Simons Foundation. Application deadline June 30, 2026. My interpretation is that this applies to prospective PhD students & those accepted/not yet matriculated. Full details: www.simonsfoundation.org/grant/simons...
simonsfoundation.org
Simons Graduate Fellowships in Ecology and Evolution
The purpose of these awards is to provide support for students entering U.S.-based Ph.D. programs with a plan to perform research in ecology and evolution. While we will consider all projects in ecolo...
01315
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 01/05/2026
A lovely visit to Plymouth and the @thembauk.bsky.social. Fantastic science by so many faculty, staff and students. And it was sunny every time I stepped outside...in Plymouth? Why yes. Looking forward to a return to learn about more great science soon.
020
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 17/04/2026
A nice overview of Jason's participation in the recent IronMan cruise. Excited to see what these samples tell us. artsci.utk.edu/ut-graduate-...
artsci.utk.edu
UT Graduate Student Joins Researchers in Antarctica - College of Arts and Sciences
Microbiology doctoral candidate Jason Olavesen sailed to the Southern Ocean with an international team investigating microscopic organisms that drive global carbon cycles. Microbiology research took a...
052
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 10/04/2026
Lake Erie was 3.7C but full of diatoms...... A good day sampling with @zepernickbn.bsky.social and Professor McKay
071
Reposted by Wilhelm Lab at the University of Tennessee
Joshua Weitz @joshuasweitz.bsky.social · 01/04/2026
Share as widely as possible. www.simonsfoundation.org/grant/center...
simonsfoundation.org
Centers of Excellence in Ukraine
Centers of Excellence in Ukraine on Simons Foundation
079
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 31/03/2026
Nice press for our collaborators on the recent paper they led. (with more to come 😀). @sullivan-lab.bsky.social @joshuasweitz.bsky.social news.osu.edu/getting-a-gl...
news.osu.edu
Getting a glimpse of viral dances in the dark in the Sargasso Sea
In a new study of viral abundance over a short time frame in the Sargasso Sea, researchers found that almost all viruses with cyclical changes in abundance were most active at night – somewhat surpris...
042
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 27/03/2026
Kudos to @jdebruyn.bsky.social, 2025. AAAS fellow! So well earned! www.aaas.org/page/2025-fe...
aaas.org
2025 AAAS Fellows | American Association for the Advancement of Science (AAAS)
020
Reposted by Wilhelm Lab at the University of Tennessee
Dan Mennill @dmennill.bsky.social · 26/03/2026
We're hiring an Assistant Professor of Ecology! Come and join me and a great group of colleagues at University of Windsor in Windsor, Ontario, Canada. Our job ad: efhc.fa.ca2.oraclecloud.com/hcmUI/Candid... Message me if you have questions. @ibiouwindsor.bsky.social @uwindsor.bsky.social
387111
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 25/03/2026
A good read on a large virus... Extensive array of endogenous giant viral elements in a polar alga shows dynamic transcriptional response to abiotic stress: Current Biology www.cell.com/current-biol...
cell.com
Extensive array of endogenous giant viral elements in a polar alga shows dynamic transcriptional response to abiotic stress
Schultz et al. show that polar algae harbor extensive endogenous giant virus elements that are transcriptionally active, stress responsive, and integrated into host regulatory networks, highlighting v...
084
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 11/03/2026
I was so lucky to meet and work with Markus then. The Suttle Lab was a special place and I owe so much of my success to that team and those collaborations, and especially Markus. Markus will be so gravely missed.
020
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 09/03/2026
Bermuda Atlantic Time Series surface waters contain thousands of viral populations with diel rhythms, forming “archetypes” that vary in abundance patterns, predicted hosts, taxonomy, and gene functions @sullivan-lab.bsky.social @joshuasweitz.bsky.social dx.plos.org/10.1371/jour...
dx.plos.org
Sub-daily virus sampling at the Bermuda Atlantic Time Series reveals diel and depth-structured population dynamics without community-level shifts
Viruses are often studied in disease settings, but in the ocean they outnumber cells and shape ecosystems, yet their dynamics remain poorly understood. In this study, high-resolution sampling of blue-...
0114
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 17/02/2026
Lab alum now Assistant Professor @eechase.bsky.social talking cyanobacteria, water quality and Lake Winnipeg on the CBC. www.cbc.ca/lite/story/9...
cbc.ca
Toxic algae research goes viral on Lake Winnipeg
050
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 05/02/2026
Eutrophic Lake Restoration Requires Multidimensional Approaches to Stressor Management | Environmental Science & Technology pubs.acs.org/doi/full/10....
pubs.acs.org
Eutrophic Lake Restoration Requires Multidimensional Approaches to Stressor Management
Cultural eutrophication has triggered lake regime shifts and cyanobacterial blooms, causing losses of key ecosystem services (e.g., water supply) and necessitating costly remediation. While nutrient e...
020
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 02/02/2026
Interesting interview with our colleague, GLIER director Mike McKay @uwindsor.bsky.social, about the Great Lakes and ice. 18 years ago, we started collaborating on this question and how ice in Lake Erie reshapes biology. Seems there is still work to do. www.cbc.ca/news/canada/...
cbc.ca
Lake Erie has more ice in late January than any winter in the past 23 years | CBC News
Great Lakes scientist Mike McKay says he was caught off guard by how much ice coverage was added so quickly. He estimates roughly 20,000 square kilometres of ice was gained over a six-day stretch in J...
020
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 16/01/2026
"Soil microbial gene expression over one year of human decomposition". Microbial activity shifted dramatically during human decomposition, altering gene expression tied to stress response, nutrient cycling, and fat breakdown. A collab with @jdebruyn.bsky.social lab. DOI: 10.1093/femsec/fiaf126
150
Reposted by Wilhelm Lab at the University of Tennessee
The Conversation U.S. @us.theconversation.com · 14/01/2026
Ocean viruses get a bad rap from land-based viruses. A new study shows that in the Atlantic’s Sargasso Sea area, viruses play a key part in help recycle nutrients that support the entire marine food chain.
buff.ly
Viruses aren’t all bad: In the ocean, some help fuel the food web – a new study shows how
Marine viruses attack cells, but the material that spills out helps fuels marine life around the world.
085
Reposted by Wilhelm Lab at the University of Tennessee
Joshua Weitz @joshuasweitz.bsky.social · 12/01/2026
Viruses transform microbes, populations, & ecosystems. In new work jointly led w/@tn-marine-micro.bsky.social + more, we find a link between enhanced viral infection and productivity 50 meters below the surface in the otherwise nutrient limited Sargasso Sea. a 🧵 www.nature.com/articles/s41...
"Seasonal enhancement of the viral shunt catalyzes a subsurface oxygen maximum in the Sargasso Sea"
https://www.nature.com/articles/s41467-025-67002-1
34720
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 12/12/2025
Excited to see @atruch.bsky.social publish his work on giant virus DNA methylation. Kratosvirus quantuckense shows diverse DNA methylation via six methyltransferases, shaping infection and genomic stability in this giant virus. journals.plos.org/plosone/arti...
journals.plos.org
Epigenome analysis of an algae-infecting giant virus reveals a unique methylation motif catalogue
DNA methylation can epigenetically alter gene expression and serve as a mechanism for genomic stabilization. Advancements in long-read sequencing technology have allowed for increased exploration into...
033
Reposted by Wilhelm Lab at the University of Tennessee
Greg Dick @greatlakesgreg.bsky.social · 25/11/2025
Nice paper on the other bloom in Lake Erie: diatoms. 👏 aslopubs.onlinelibrary.wiley.com/doi/full/10....
aslopubs.onlinelibrary.wiley.com
Temperature and light drive physiological and transcriptional responses, modulating infection outcomes in a freshwater diatom–chytrid system
Stephanodiscus binderanus is a bloom-forming diatom abundant in winter and persisting into spring in the Laurentian Great Lakes. Climate change impacts these blooms by altering ice cover, turbidity, ...
142
Reposted by Wilhelm Lab at the University of Tennessee
Greg Dick @greatlakesgreg.bsky.social · 24/11/2025
What are harmful algal blooms? How do they affect our health? How should I report an exposure? Where can health care providers get more information on what to do? Our Great Lakes Center for Freshwaters and Human Health (NSF/NIH) provides answers with these two short informational videos 👇
121
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 24/11/2025
Taihu metatranscriptomes reveal Microcystis colonies have "Black Queen"-like community dynamics and favor lysogeny, while single cells face more lytic pressure. From @utkmicrobiology.bsky.social with Xuhui Huang, @eechase.bsky.social, @zepernickbn.bsky.social and others. doi.org/10.1093/isme...
academic.oup.com
Contrasting viral infection strategies for single cell and colonial Microcystis populations consistent with Black Queen dynamics
Abstract. Cyanobacterial blooms dominated by Microcystis spp. pose significant ecological challenges, including the release of toxins and disruption of aqu
121
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 22/11/2025
Research globally and act locally. Nice to see @zepernickbn.bsky.social @utkmicrobiology.bsky.social getting attention for collaborations with GLCFWHH researchers to address a local algal bloom. Just published in Harmful Algae. artsci.utk.edu/meads-quarry...
artsci.utk.edu
Mead’s Quarry Research Reveals Toxic Algae Drivers - College of Arts and Sciences
UT research into a pink algae bloom that closed the popular swimming area at Ijams Nature Center in 2024 is providing insight into how the organisms thrive.  Researchers from the University of Tenness...
042
Reposted by Wilhelm Lab at the University of Tennessee
Michael Twiss @mtwiss.bsky.social · 16/11/2025
Special section of Journal of Great Lakes Research on Connecting Waters in the #GreatLakes. Open Access: includes a brief historical review of past efforts to focus on these critical areas and Summary of the 15 manuscripts that compose the Section. 🧪 doi.org/10.1016/j.jg...
doi.org
Redirecting
173
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 11/11/2025
What happens when an energetic postdoc (@zepernickbn.bsky.social) takes a class to a local quarry to learn to limnology? Science!! (and pets are protected). Nice work by Britt, team and colleagues from the Great Lakes Center for Fresh Waters & Human Health. www.sciencedirect.com/science/arti...
sciencedirect.com
The ornithine-arginine cycle supported a toxic, metalimnic Planktothrix rubescens bloom
Planktothrix rubescens is distinct from other cyanobacterial harmful algal bloom (cHAB) genera: the crimson-red cHAB thrives in the cold, low-light, n…
072
Reposted by Wilhelm Lab at the University of Tennessee
Prof Alessandro Tagliabue @altagliabue.bsky.social · 29/10/2025
Seeking a three year postdoc in the field of ocean biogeochemistry and productivity using mechanistic models and synthesis of observations. Note the short fuse for applications. Please help distribute. All nationalities welcome to apply! 🌊 www.jobs.ac.uk/job/DPG117/p...
jobs.ac.uk
Postdoctoral Research Associate at University of Liverpool
Looking for a new job opportunity in academia? Check out this job opening for a Postdoctoral Research Associate on jobs.ac.uk!
04248
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 23/10/2025
New research indicates that Microcystis plasmids from lab strains and Lake Erie metatranscriptomes are transcriptionally active, ecologically relevant, and may have genetic overlap with phages. From Gwen Stark and colleagues.... academic.oup.com/ismecommun/a...
academic.oup.com
Microcystis plasmids: the unexplored portion of the mobilome and the presence of potential phage-like plasmids
Abstract. While resequencing Microcystis aeruginosa (PCC7806) and its nontoxigenic mutant (PCC7806 ΔmcyB), we discovered identical unreported plasmids in b
020
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 21/10/2025
Still accepting applications for our plant-microbe person.
011
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 21/10/2025
Well done Alfonso & team! High-frequency sampling of Bermuda Atlantic Time Series waters revealed depth and diel viral dynamics, providing insights into short-term virus-host interactions. @joshuasweitz.bsky.social @sullivan-lab.bsky.social www.biorxiv.org/cgi/content/...
biorxiv.org
Sub-daily Bermuda Atlantic Time Series virus sampling reveals taxonomy, host, and functional differences at the population, but not community level
Ocean microbes contribute to biogeochemical cycles and ecosystem function, but they do so under top-down pressure imposed by viruses. While viruses are increasingly understood spatially and beginning ...
041
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 11/10/2025
Its graduate school application time! Positions come with guaranteed stipend, tuition and health care coverage.
000
Reposted by Wilhelm Lab at the University of Tennessee
The Marine Biological Association @thembauk.bsky.social · 11/10/2025
Be part of our global network of students, scientists, and ocean advocates. ✅ Bulletin with news, events & opportunities ✅ [UK’s largest marine library ✅ Access to the JMBA ✅ Exclusive training, events & discounts Find out more - mba.ac.uk/our-membership/
033
Reposted by Wilhelm Lab at the University of Tennessee
Dan Garisto @dangaristo.bsky.social · 26/09/2025
New: After a long wait, the GRFP solicitation is live! Deadlines have been extended to early November, so applicants have a bit over a month to submit. www.nsf.gov/funding/oppo...
nsf.gov
NSF Graduate Research Fellowship Program (GRFP)
2115106
Reposted by Wilhelm Lab at the University of Tennessee
itati santamaria de Collins @itativcs.latinsky.app · 26/09/2025
🧪The NSF has made changes to the GRFP solicitation and eligibility TODAY that may change your eligibility! PLEASE read through the solicitation if you were planning to apply and speak to your mentors about the merits of applying: www.nsf.gov/funding/oppo...
nsf.gov
NSF Graduate Research Fellowship Program (GRFP)
01819
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 17/09/2025
It is that time of year again. The Department of Microbiology is accepting applications for its PhD and MSc programs. Come join us!
111
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 16/09/2025
Come join us in Knoxville. Faculty position looking for those interested in the quantitative aspects of phototroph-microbe interactions.
011
Wilhelm Lab at the University of Tennessee @tn-marine-micro.bsky.social · 11/09/2025
Very excited for Alex Truchon and his defense today. Giant viruses, algal blooms, DNA methylation and more....
110
Reposted by Wilhelm Lab at the University of Tennessee
UBC Microbiology and Immunology @ubcmicroimmuno.bsky.social · 22/07/2025
Microbiology and Immunology and the Michael Smith Labs are seeking candidates for an Assistant Professor of Teaching in STEM Public Engagement position. Learn more and apply at: www.msl.ubc.ca/careers/ #IndigenousinSTEM #BlackInNature #WomenInSTEM #MinoritiesInSTEM #DiversityInSTEM #STEMEducation
21724