S. Lorena Ament
@loreament.bsky.social
500 followers 360 following 38 posts
Evolutionary biologist interested in genomics, speciation, reproductive strategies, fungi, and biodiversity. And cats! She/her
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loreament.bsky.social
Wooo!
biorxiv-evobio.bsky.social
NOD-like receptor genes evolve under diversity-enhancing mechanisms in a fungal species complex https://www.biorxiv.org/content/10.1101/2025.09.29.679196v1
Reposted by S. Lorena Ament
ingridolivares.bsky.social
How do species diverge? Could the relative immobility of plants increase their likelihood of speciating in the same place?🧵
Reposted by S. Lorena Ament
crouxevo.bsky.social
Hybridization and introgression are major evolutionary processes. Since the 1940s, the prevailing view has been that they shape plants far more than animals. In our new study (www.science.org/doi/10.1126/...
), we find the opposite: animals exchange genes more, and for longer, than plants
loreament.bsky.social
I think their point is “they occur more in the populations where they are adaptive”, which makes me uncomfortable haha. Having said, I haven’t read the paper carefully and I didn’t understand their method on a quick scan.
Reposted by S. Lorena Ament
plosbiology.org
What causes viral transmission bottlenecks? This study uses barcoded virions to show that in the case of #influenza A #virus, early within-host replication dynamics (rather than a reduced inoculum population) drive loss of diversity during transmission @plosbiology.org 🧪 plos.io/4ngicDK
Population diversity declines between inoculated and exposed guinea pigs. Viral titers in nasal lavage samples are indicated by the overall height of the bar. Red lines show LOD (50 PFU/mL). Colors within the bars represent unique barcodes, and the height of each color indicates barcode frequency within the sample. Plots for individual animals are paired with those of their cage mate. Representative pairs for direct contact (top half) and aerosol (bottom half) exposure are shown from three experimental replicates. Guinea pig ID numbers are shown in the upper right corner of each plot.
Reposted by S. Lorena Ament
rayanchikhi.bsky.social
🌎👩‍🔬 For 15+ years biology has accumulated petabytes (million gigabytes) of🧬DNA sequencing data🧬 from the far reaches of our planet.🦠🍄🌵

Logan now democratizes efficient access to the world’s most comprehensive genetics dataset. Free and open.

doi.org/10.1101/2024...
Reposted by S. Lorena Ament
mjamy.bsky.social
Check out our new paper on adopting a trait-based framework for protist diversity! We make the case for a unified protist trait database, how to build it, and how it could transform research on protist ecology and evolution.
#protistsonsky
pierreramond.bsky.social
Hello there 🦋
Happy to share our piece "Towards a trait-based framework for protist ecology and evolution" in @cp-trendsmicrobiol.bsky.social

Let's build a unified trait 📏 database to unlock transformative insights into protist 🔬 ecology 🌍 and evolution ⏳

▶️ doi.org/10.1016/j.ti...

#protistsonsky
Reposted by S. Lorena Ament
bjesseshapiro.bsky.social
I'm super bummed to be missing #ESEB2025 @eseb2025.bsky.social due to a cancelled flight! Here's a quick overview of my talk "Gene- and genome-focused perspectives on microbial pangenomes" slated to be part of The Evolution of Microbial Pangenomes -- which I recommend you attend tomorrow (Fri) !
1/n
Reposted by S. Lorena Ament
evolletters.bsky.social
How predictably does complex trait adaptation proceed over space and time in wild populations?
doi.org/10.1093/evle...

Now in @evolletters.bsky.social by @skylerberardi.bsky.social, @paulrschmidt.bsky.social et al.

📷: Dr. Rush Dhillon
Figure showing the experimental overview as a graphic. Remaining alt text taken from the figure caption in the paper: (A) we sampled flies from six wild orchard populations ranging from Homestead, FL, to Lancaster, MA, and established isofemale lines in the laboratory. (B) We returned to a focal orchard in Media, PA, at early- and late-season timepoints and collected flies to capture evolutionary patterns following winter and summer conditions. (C) We then seeded outdoor mesocosms (N = 9) with an outbred population originating from early-season collections in Media, PA, and sampled flies at the end of summer (mid-season) and fall (late-season) to determine if seasonal patterns are recapitulated in experimental populations controlled for migration, drift, and cryptic population structure. (D) Across each wild or experimental context, we sampled flies, established lines in the lab, completed common garden treatment to remove environmental effects, and scored females for abdominal pigmentation. We also conducted pooled DNA sequencing on additional flies sampled from each population to map genomic patterns for candidate pigmentation SNPs.
Reposted by S. Lorena Ament
geneticssociety.bsky.social
@charleston.bsky.social and colleagues introduce the ancestry-specific expected genetic relationship matrix (as-eGRM), an analysis framework that estimates the relatedness within ancestry components between admixed individuals, in the @ajhgnews.bsky.social latest article: bit.ly/3U5p0aI #ASHG
Reposted by S. Lorena Ament
biorxiv-microbiol.bsky.social
A pangenomics-enabled platform for the high-throughput discovery of antifungal resistance factors in crop pathogens https://www.biorxiv.org/content/10.1101/2025.07.18.665620v1
Reposted by S. Lorena Ament
official-smbe.bsky.social
The auditorium is slowly filling up for the opening session and our inaugural keynote speech...

#SMBE2025
Reposted by S. Lorena Ament
nicolasgaltier.bsky.social
New preprint: we advertise DAFNEE, a database of academia-friendly eco-evo-archaeo journals. 1/6
#AcademicPublishing #ecoevo #archaeology #EthicalPublishing #SocietyJournals #DiamondOpenAccess
doi.org/10.32942/X24...
Time to publish ethically: DAFNEE, a database of academia-friendly journals in ecology and evolutionary biology.
doi.org
loreament.bsky.social
This work was done in both Stockholm and Bordeaux Universities as part of my Vetenskapsrådet postdoc mobility grant. I am grateful to my co-authors and to everybody who supported me along the way! Yay!!
loreament.bsky.social
So in conclusion, het-d and het-e independently evolved the capacity of recognizing het-c, even in the presence of interparalog repeat exchange! This little story is relevant for NLRs in general, as ~13% of all fungal NLRs and a lot of bacterial NLRs have HIC repeats! end/n

#Bacteria #immunity
woody and buzz lightyear from toy story are standing next to each other and saying `` everywhere ! ''
ALT: woody and buzz lightyear from toy story are standing next to each other and saying `` everywhere ! ''
media.tenor.com
loreament.bsky.social
For the repeat domain, we extracted >1100 individual repeats and performed a PCA of their nucleotide sequences. Indeed, het-d and het-e are not that similar, but we discovered that het-e seems to be exchanging repeats with another gene! 8/n
loreament.bsky.social
Are het-d and het-e capable of recognizing het-c because of shared ancestry? No! It turns out they are not that closely related, judging by phylogenies along the gene for a bunch of NLRs in Podospora. 7/n
loreament.bsky.social
We sequenced a panel of strains with known alleles, which can now be used to assign a phenotype to wild-type strains. With this information in hand, we determined that reactive alleles fold into two beta-propellers that likely embrace their cognate ligand HET-C like a clam. 6/n
#AlphaFold