Ricky Wolff
@rwolff.bsky.social
📤 489
📥 428
📝 63
Ecology and evolution of the human gut microbiome in Nandita Garud's lab at UCLA
reposted by
Ricky Wolff
Martina Dal Bello
about 1 month ago
Check out our new paper led by brilliant
@jhuisman.bsky.social
about how microbial communities cope with stress due to increasing salinity in their environment. We have all your favorites: isolate phenotyping, pairwise competitions, community propagations, and theory.
#microsky
#mevosky
#ecosky
add a skeleton here at some point
0
46
16
reposted by
Ricky Wolff
Sean Gibbons 🦠💩
about 2 months ago
You can get an accurate estimate of total bacterial biomass from stool metagenomes by simply normalizing by host read count, without needing any additional measurements. Excellent work by UW Master's student Gechlang Tang in
@asm.org
#mSystems
Journal.
journals.asm.org/doi/10.1128/...
🧵
loading . . .
Metagenomic estimation of absolute bacterial biomass in the mammalian gut through host-derived read normalization | mSystems
In this study, we asked whether normalization by host reads alone was sufficient to estimate absolute bacterial biomass directly from stool metagenomic data, without the need for synthetic spike-ins, ...
https://journals.asm.org/doi/10.1128/msystems.00984-25
7
94
54
reposted by
Ricky Wolff
Erik van Nimwegen
2 months ago
Because of a lack of separation of the time scales for TF binding/unbinding and fluctuations in active TF levels, non-equilibrium gene regulation may be common in bacteria. Check out this nice piece by @philipcball.bsky.social on our new publication in PRX Life.
physics.aps.org/articles/v18...
loading . . .
Different Bacterial Genes Have Different Turn-Ons
Not all genes respond in the same way to regulation by the same molecule—a property that might enable cells to produce complex genetic responses.
https://physics.aps.org/articles/v18/137
1
13
3
reposted by
Ricky Wolff
Jon Paczkowski🌹
4 months ago
The Wadsworth Center, New York State Department of Health, is currently recruiting for a Research Scientist 5 (Assistant/Associate Professor equivalent) to lead an independent research program focused on zoonotic and/or vector-borne pathogens (viral and bacterial).
1
3
4
reposted by
Ricky Wolff
Dmitri Petrov
4 months ago
Flybase lost all of the NIH support overnight - it is a disaster for the community. Please consider donating. I just did!
www.philanthropy.cam.ac.uk/give-to-camb...
loading . . .
Drosophila Genetic Database
The Drosophila Genetic Database, FlyBase, is on the brink of collapse due to the sudden termination of the FlyBase NIH grant, which includes salaries for 5 literature curators based at the University ...
https://www.philanthropy.cam.ac.uk/give-to-cambridge/physiology-development-and-neuroscience/drosophila-genetic-database
4
144
156
reposted by
Ricky Wolff
Ben Vezina
4 months ago
One of the coolest papers I've ever read:
www.nature.com/articles/s41...
Within-colony bacterial dynamics. And the figures are absolutely striking and clear.
loading . . .
Spatiotemporal development of expanding bacterial colonies driven by emergent mechanical constraints and nutrient gradients - Nature Communications
Bacterial colonies growing on solid surfaces can exhibit robust expansion kinetics, with constant radial growth and saturating vertical expansion. Here, the authors use modeling and experiments to sho...
https://www.nature.com/articles/s41467-025-60004-z
2
43
14
reposted by
Ricky Wolff
Maria Rebolleda-Gomez
4 months ago
We organized this one:
academic.oup.com/femsle/artic...
in 2024. It is coming back in 2026 with 2 hubs in the US (Michigan and SoCal). It was a great experience
loading . . .
MEEhubs2024: A hub-based conference on microbial ecology and evolution fostering sustainability
This paper presents a multi-hub conference on microbial ecology and evolution, analyzing participant and organizer feedback to provide a template and recom
https://academic.oup.com/femsle/article/doi/10.1093/femsle/fnaf022/8003766
3
19
8
reposted by
Ricky Wolff
University of Basel
5 months ago
Bacteria have a simple yet potent mechanism that controls their sensitivity to environmental stimuli. A new study by researchers led by
@erikvannimwegen.bsky.social
@biozentrum.unibas.ch
shows: the slower cells grow, the more sensitively they respond to their environment.
loading . . .
Slow-growing bacteria respond more sensitively to their environment
Bacteria have a simple yet potent mechanism that controls their sensitivity to environmental stimuli. A new study by researchers at the Univer...
https://www.unibas.ch/en/News-Events/News/Uni-Research/Slow-growing-bacteria-respond-more-sensitively-to-their-environment.html
0
10
6
Nice review article on a fascinating problem—the coexistence of strains in microbial communities.
@akshitg.bsky.social
&
@gchure.bsky.social
enviromicro-journals.onlinelibrary.wiley.com/doi/full/10....
loading . . .
Paradox of the Sub‐Plankton: Plausible Mechanisms and Open Problems Underlying Strain‐Level Diversity in Microbial Communities
“Paradox of the sub-plankton: Plausible mechanisms and open problems underlying strain-level diversity in microbial communities” by Akshit Goyal* and Griffin Chure*. This work highlights the limitati...
https://enviromicro-journals.onlinelibrary.wiley.com/doi/full/10.1111/1462-2920.70094
5 months ago
1
12
3
Whimsical Friday afternoon read—1976 study of the microbiomes of astronauts undergoing isolation training, which concluded B. theta abundance responds specifically to "anger stress"
5 months ago
3
8
0
reposted by
Ricky Wolff
Jonathan Eisen
5 months ago
Wow
www.biorxiv.org/content/10.1...
A cellular entity retaining only its replicative core: Hidden archaeal lineage with an ultra-reduced genome
4
90
41
reposted by
Ricky Wolff
Meg Tirrell
5 months ago
Kevin Hall, one of the only nutrition researchers in the world running controlled trials of ultraprocessed foods, just announced his early retirement from NIH, citing censorship of his research communications:
www.cnn.com/2025/04/16/h...
loading . . .
Top NIH nutrition researcher studying ultraprocessed foods departs, citing censorship under Kennedy | CNN
When President Donald Trump named Robert F. Kennedy Jr. as his choice to lead the US Department of Health and Human Services, one group of health researchers was cautiously optimistic that their cause...
https://www.cnn.com/2025/04/16/health/nih-nutrition-researcher-departs
2
33
18
... but how many genetic edits would one have to make to actually get a new species?
6 months ago
0
0
0
reposted by
Ricky Wolff
Jacob Baker
6 months ago
Taxa is hiring! We're looking for a Computational Biologist to spearhead the analysis of massive genomic datasets for our flagship probiotics. Exciting science, great team, and transparent compensation. Apply here 👇
loading . . .
Taxa hiring Computational Biologist in San Francisco, CA | LinkedIn
Posted 4:13:15 PM. The OpportunityWe are looking for a talented Computational Biologist to spearhead the analysis of…See this and similar jobs on LinkedIn.
https://www.linkedin.com/jobs/view/4198377536/?refId=CrL3mDP1xcP8jgv44M5xYQ%3D%3D&trackingId=CrL3mDP1xcP8jgv44M5xYQ%3D%3D
0
3
3
reposted by
Ricky Wolff
Britt Koskella
6 months ago
Know any soon to graduate or recently graduated undergrads interested in a full year, paid postbac research position in microbiome sciences? Have them join our zoom Q&A session on Friday, April 11, 11:30am-12:30pm PST. More info here:
sites.google.com/berkeley.edu...
loading . . .
Bay Area RaMP - 2025-26 Cohort
2025-2026 Cohort
https://sites.google.com/berkeley.edu/rampmicrobiomes/2025-26-cohort#h.jfykfo6tczj
1
17
25
Greatly enjoyed this thought provoking, deeply researched, and extremely well written review from
@saradirienzi.bsky.social
and Robert Britton
www.sciencedirect.com/science/arti...
loading . . .
Adaptation of the Gut Microbiota to Modern Dietary Sugars and Sweeteners
The consumption of sugar has become central to the Western diet. Cost and health concerns associated with sucrose spurred the development and consumpt…
https://www.sciencedirect.com/science/article/pii/S2161831322002885#bib140
6 months ago
2
8
3
reposted by
Ricky Wolff
Féaron Cassidy, PhD
6 months ago
Super interesting study
www.nature.com/articles/s41...
add a skeleton here at some point
0
11
3
reposted by
Ricky Wolff
Clare Abreu
6 months ago
My lab at NYU is hiring a postdoc in microbial ecology and evolution! We are looking for someone interested in both wet and dry lab techniques, including experimental evolution, genome editing, bioinformatics, and some modeling. Apply here:
apply.interfolio.com/164683
loading . . .
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
https://apply.interfolio.com/164683
4
136
88
reposted by
Ricky Wolff
Nature Reviews Microbiology
7 months ago
New online! Interactions and evolutionary relationships among bacterial mobile genetic elements
loading . . .
Interactions and evolutionary relationships among bacterial mobile genetic elements
Nature Reviews Microbiology, Published online: 11 March 2025; doi:10.1038/s41579-025-01157-yIn this Review, Lang and colleagues present an overview of the current knowledge landscape regarding mobile genetic elements in bacteria, with a focus on their…
https://www.nature.com/articles/s41579-025-01157-y?utm_source=bluesky&utm_medium=social&utm_campaign=nrmicro
0
34
29
reposted by
Ricky Wolff
Karina Gutiérrez García
9 months ago
Finally, our paper, "A Conserved Bacterial Genetic Basis for Commensal-Host Specificity," has been officially published in Science.
www.science.org/doi/10.1126/...
loading . . .
A conserved bacterial genetic basis for commensal-host specificity
Animals selectively acquire specific symbiotic gut bacteria from their environments that aid host fitness. To colonize, a symbiont must locate its niche and sustain growth within the gut. Adhesins are...
https://www.science.org/doi/10.1126/science.adp7748
2
79
26
reposted by
Ricky Wolff
François Mayer
10 months ago
Interesting new study in
@science.org
: A conserved bacterial genetic basis for commensal-host specificity
www.science.org/doi/10.1126/...
loading . . .
A conserved bacterial genetic basis for commensal-host specificity
Animals selectively acquire specific symbiotic gut bacteria from their environments that aid host fitness. To colonize, a symbiont must locate its niche and sustain growth within the gut. Adhesins are...
https://www.science.org/doi/10.1126/science.adp7748
0
21
6
reposted by
Ricky Wolff
Stephen Royle
10 months ago
Please suggest a cool paper/preprint in your field in the last year or so! For a course I teach, I am collecting papers on: cell/dev bio, microbio, neuro, maths/stats/CS/chem/phys applied to biology. Students use one paper as the basis for a "research grant application" that they will write. 1/2
19
38
26
reposted by
Ricky Wolff
Nicholas A. Christakis
10 months ago
The bacteria in your gut depend on where you are in the social network around you. The microbes within us treat our social networks as the extended environment in which they thrive. They can spread from person to person. New
#HNL
work out today in
@natureportfolio.bsky.social
. 1/
11
127
59
reposted by
Ricky Wolff
Lucas A. Meirelles
11 months ago
I'm new here, so I'll share our recent work here too 😁🧫 Using Tn-seq + live imaging in engineered airway organoids, we explored the fitness tradeoffs P. aeruginosa faces while growing and surviving antibiotic treatment on the mucosal surface. Check it out:
www.nature.com/articles/s41...
#MicroSky
loading . . .
Pseudomonas aeruginosa faces a fitness trade-off between mucosal colonization and antibiotic tolerance during airway infection - Nature Microbiology
Tn-seq and live imaging of Pseudomonas aeruginosa during airway epithelial organoid infections reveal metabolic adaptations and trade-offs between growth and antibiotic tolerance in biofilm lifestyle,...
https://www.nature.com/articles/s41564-024-01842-3
2
50
22
reposted by
Ricky Wolff
Sophie Jean Walton
about 1 year ago
shout out to
@jferrare.bsky.social
!!!!!
add a skeleton here at some point
0
10
2
reposted by
Ricky Wolff
Vaughn Cooper
about 1 year ago
From Ben Good: competition btwn linked mutations can..enhance selection for modifiers that increase benefits of future mutations, even when they impose a strong direct cost on fitness. However..modest direct benefits can..drive evolutionary dead ends to fixation.
www.nature.com/articles/s41...
loading . . .
Evolution of evolvability in rapidly adapting populations - Nature Ecology & Evolution
Evolvability modifier mutations alter the rates and benefits of future mutations, but it is difficult to predict when they will be favoured by natural selection. A mathematical framework shows that co...
https://www.nature.com/articles/s41559-024-02527-0
1
31
16
reposted by
Ricky Wolff
bioRxiv Microbiology
about 1 year ago
Experimental capture of genomic islands defines a widespread class of genetic element capable of non-autonomous transfer https://www.biorxiv.org/content/10.1101/2024.08.29.610337v1
loading . . .
Experimental capture of genomic islands defines a widespread class of genetic element capable of non-autonomous transfer https://www.biorxiv.org/content/10.1101/2024.08.29.610337v1
Bacteria acquire new genes by horizontal gene transfer (HGT). Acquisition is typically mediated by m
https://www.biorxiv.org/content/10.1101/2024.08.29.610337v1
0
1
4
reposted by
Ricky Wolff
Sergey Kryazhimskiy
over 1 year ago
I wrote a little perspective piece
www.cell.com/cell/fulltex...
on this mind-blowing paper
www.sciencedirect.com/science/arti...
by
@asanchezlab.bsky.social
and colleagues.
loading . . .
A simple rule for predicting function of microbial communities
Microbial communities perform many important functions, such as carbon sequestration, decomposition, pathogen resistance, etc., but quantitatively predicting functions of new communities remains a maj...
https://www.cell.com/cell/fulltext/S0092-8674(24)00450-1
1
51
23
reposted by
Ricky Wolff
Microbiome Virtual International Forum
over 1 year ago
#MVIF
#30 keynotes Kathryn Patras Marina Walther-Antonio Linda Brubaker Nichole Klatt & Ian Fields, as a moderator, will discuss vaginal microbiome and urobiome, endometrial and ovarian cancer, and bacterial vaginosis! Register here
events.ringcentral.com/events/micro...
1
2
3
These ingestible pills are awesome—just a fantastic tool to see what's actually going on inside the gut
elifesciences.org/articles/85567
loading . . .
Ingestible pills reveal gastric correlates of emotions
Direct measures of inner gastrointestinal signals via ingestible capsules highlight the role of stomach pH in shaping human feelings of disgust, fear and happiness.
https://elifesciences.org/articles/85567
over 1 year ago
0
1
0
Paradoxically, preventing infection with high ABX can make patients susceptible to subsequent infections like C diff as gut flora get wiped out. Developing ABX that act in concert with the commensal microbiome to resist pathogens is a triumph
www.nature.com/articles/s41...
loading . . .
A Gram-negative-selective antibiotic that spares the gut microbiome - Nature
Lolamicin, a novel antibiotic developed from a pyridinepyrazole precursor, exhibits potent activity against a broad range of Gram-negative multidrug-resistant clinical isolates, and good efficacy...
https://www.nature.com/articles/s41586-024-07502-0
over 1 year ago
1
1
1
reposted by
Ricky Wolff
Helen Branswell 🇨🇦
over 1 year ago
Scientists have managed to generate a full genetic sequence of
#H5N1
#birdflu
from store-bought milk, suggesting commercial milk products could be a way to monitor the outbreak in cows, given the lack of cooperation from dairy farmers.
www.statnews.com/2024/05/21/b...
loading . . .
Move over, wastewater. Store-bought milk could be another way to track the bird flu outbreak in cows
Store-bought milk could provide a work-around, University of Washington and Fred Hutchinson researchers suggested, similar to wastewater surveillance.
https://www.statnews.com/2024/05/21/bird-flu-virus-spread-scientists-monitor-h5n1-in-store-bought-milk/
6
82
52
Firmicutes appear to harbor host-specificity genes that allow them to bind to particular physical niches in the host gut I got to play a very minor role in this amazing work, and I'm so excited to see it out
www.biorxiv.org/content/10.1...
loading . . .
A conserved genetic basis for commensal-host specificity through live imaging of colonization dynamics
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
https://www.biorxiv.org/content/10.1101/2024.04.19.590229v1
over 1 year ago
0
0
0
reposted by
Ricky Wolff
Zhiru Liu
over 1 year ago
My first theory project! I've really enjoyed how we could decompose complex dynamics into those of individual lineages. This approach is quite flexible, and we're hoping to extend it to more complex scenarios, including N(t) and certain forms of positive selection!
add a skeleton here at some point
0
7
2
reposted by
Ricky Wolff
Jonathan Pritchard
over 1 year ago
Two new chapters from my open-access textbook in human population genetics are now online: - Population structure: I. Ancestry estimation - Population structure: II. More about admixture
web.stanford.edu/group/pritch...
loading . . .
An Owner's Guide to the Human Genome
An Owner's Guide to the Human Genome
https://web.stanford.edu/group/pritchardlab/HGbook.html
1
50
22
reposted by
Ricky Wolff
Jesse Shapiro
over 1 year ago
Now published: "Phage predation, disease severity, and pathogen genetic diversity in cholera patients"
www.science.org/doi/10.1126/...
Check out the podcast to hear co-senior author Eric Nelson talk about the twists and turns of our study (around 18:25):
www.science.org/content/podc...
add a skeleton here at some point
2
30
23
Join us–you get to work with Nandita, $100K in salary, and we have La Croix in the fridge
add a skeleton here at some point
over 1 year ago
1
0
2
Really liked this—directing evolution with prophage
www.sciencedirect.com/science/arti...
over 1 year ago
3
10
5
reposted by
Ricky Wolff
Microbiome Virtual International Forum
over 1 year ago
#MVIF
#28 program is out! 🤩 ⭐️ Keynote: 🇺🇸Julia Oh ⭐️ Short talks: 🇨🇳 Lu Wu 🇨🇳 Yiqian Duan 🇺🇸 Zhenrun Jerry Zhang ⭐️ Highlights: 🇨🇳 Ye Peng 🇯🇵 Naoki Hayashi Registration:
events.ringcentral.com/events/micro...
1
5
4
"Life finds a way"
elifesciences.org/articles/90156
loading . . .
Synthetic eco-evolutionary dynamics in simple molecular environment
A variant of SELEX introduced here to induce abiotic evolution in a molecular system enables to observe and study speciation, the nature of fitness, and the interplay between use of resources and inte...
https://elifesciences.org/articles/90156
over 1 year ago
0
7
5
Was an honor to present at MVIF! The talks have all been fantastic—incredible opportunity to meet and talk with microbiome researchers from around the world.
add a skeleton here at some point
over 1 year ago
0
7
3
reposted by
Ricky Wolff
Joao Ascensao
over 1 year ago
Do you enjoy mysterious population stochasticity, chaotic dynamics, and/or popgen? Then this preprint might be for you! Super excited to share a project that has been an exciting journey, and a fun blend of theory and experiment!
www.biorxiv.org/content/10.1...
loading . . .
Asynchronous abundance fluctuations can drive giant genotype frequency fluctuations
bioRxiv - the preprint server for biology, operated by Cold Spring Harbor Laboratory, a research and educational institution
https://www.biorxiv.org/content/10.1101/2024.02.23.581776v1
1
9
6
reposted by
Ricky Wolff
Vaughn Cooper
over 1 year ago
ICYMI: I ❤️ this paper. It raises various possibilities to explain Lewontin's Paradox for super-abundant microbes like Pro & E. huxleyi. Provides essential pop-gen background and open questions. TLDR: every mutation happens in these species 10^11 times a day! 🤯🧪🧬
www.sciencedirect.com/science/arti...
loading . . .
How does evolution work in superabundant microbes?
Marine phytoplankton play crucial roles in the Earth’s ecological, chemical, and geological processes. They are responsible for about half of global p…
https://www.sciencedirect.com/science/article/pii/S0966842X24000246
0
20
6
So excited to be presenting my work on detecting adaptive horizontal gene transfer in the microbiome in this session!
add a skeleton here at some point
over 1 year ago
0
4
1
reposted by
Ricky Wolff
Microbiome Virtual International Forum
over 1 year ago
#MVIF
26 program is out! 🤩 ⭐️ Keynote: 🇺🇸 Laura S. Weyrich ⭐️ Short talks: 🇨🇳 Ziye Wang 🇺🇸Kate Bowie 🇺🇸Richard Wolff 🇺🇸Ivan Zheludev More about talks here:
www.microbiome-vif.org/en-US/-/futu...
0
6
5
Absolutely remarkable paper that everyone interested in microbial evolution should read
add a skeleton here at some point
over 1 year ago
1
5
0
reposted by
Ricky Wolff
Jesse Shapiro
over 1 year ago
Ever wonder if V. cholerae loses genetic diversity due to bottlenecks as it passes through the gut? We have a little preprint about that! The answer, based on sequencing 200 genomes from 10 patients’ vomit and stool, is: maybe a little but not much!
add a skeleton here at some point
1
19
19
reposted by
Ricky Wolff
Richard Lenski
over 1 year ago
New
#LTEE
paper out in
#Science
today. I wrote about it here, with an emphasis on "how civility, cooperation, and collaboration can succeed even in the highly competitive world of science."
the-ltee.org/an-update-to...
And here's a link to the paper itself:
www.science.org/doi/10.1126/...
loading . . .
An Update to the Changing Distribution of Fitness Effects
About a year and a half ago, I wrote about a pair of papers posted on the bioRxiv preprint website. Both papers examined the evolution of the distribution of fitness effects (DFE) in the LTEE popula...
https://the-ltee.org/an-update-to-the-changing-distribution-of-fitness-effects/
2
114
63
reposted by
Ricky Wolff
Alison Feder
over 1 year ago
Delighted to share Elena Romero's work on HIV recombination now out in MBE!
academic.oup.com/mbe/article/...
We wanted to understand if intra-host HIV populations with high viral loads might have more recombination due to increased opportunities for coinfection.
#VirEvol
🧪
loading . . .
Animated GIF - Find & Share on GIPHY
Discover & share this Animated GIF with everyone you know. GIPHY is how you search, share, discover, and create GIFs.
https://media.giphy.com/media/v1.Y2lkPTc5MGI3NjExbGFwemRsemNoZHlhYjB6djY1MGlxbHRzdTFjMzNxc3pjMGp4aWNndiZlcD12MV9pbnRlcm5hbF9naWZfYnlfaWQmY3Q9Zw/hnoy318fyBZwz0F494/giphy.gif
0
28
11
Glad to see that others are starting to examine strain dynamics in microbiomes, and excited to dig into this after Tami's MEEHubs talk Tuesday. Amazing dataset!
add a skeleton here at some point
over 1 year ago
0
5
0
Load more
feeds!
log in