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Reposted

Bryan White, MS Bio, MPH 🧬 @crvscience.com · 4d

Homie got 229 pairs of chromosomes

www.sciencedaily.com/releases/202...

This tiny butterfly has the most chromosomes of any animal on Earth

Scientists have confirmed that the Atlas blue butterfly carries the most chromosomes of any animal, with 229 pairs. Unlike duplication, its chromosomes split apart, reshaping its genome in surprising ...

www.sciencedaily.com

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Molly Przeworski @mollyprz.bsky.social · Sep 2

In these dark times, it comes as a rare pleasure to highlight @natanaels.bsky.social ‬ & @marcdemanuel.bsky.social's work on germline and somatic mutations in humans. 1/n
www.biorxiv.org/cgi/content/...

Collateral mutagenesis funnels multiple sources of DNA damage into a ubiquitous mutational signature

Mutations reflect the net effects of myriad types of damage, replication errors, and repair mechanisms, and thus are expected to differ across cell types with distinct exposures to mutagens, division ...

www.biorxiv.org

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PlantEvolution 🌱🌾 @plantevolution.bsky.social · Aug 20

Out after peer review, collaborative study from Nordborg & Weigel labs with help from many others. Not the largest collection of new Arabidopsis thaliana genomes, but we hopefully put forward some good ideas for how to think about pangenomes and their analysis!
www.nature.com/articles/s41...

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Mary Williams @PlantTeaching @plantteaching.bsky.social · Aug 17

How can England possibly be running out of water? | Water | The Guardian share.google/M8qhPxIx3zIg...

How can England possibly be running out of water?

While famously rainswept, climate crisis, population growth and profligacy mean the once unthinkable could be possible

share.google

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Baptiste Rafanel @baptisterafanel.bsky.social · Aug 14

1/ How do animals develop immunity against a newly encountered transposable element from scratch? Our study reveals that the mobility of TEs is their Achilles heel, allowing hosts to develop a powerful small RNA-mediated silencing response.
www.biorxiv.org/content/10.1...

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Prof Richard Buggs @rbuggs.bsky.social · Jun 27

Just out in Science: we demonstrate a micro-evolutionary shift in a single generation, involving thousands of genomic loci, giving younger ash trees more resistance to ash dieback, on average, than their parents
www.science.org/doi/10.1126/science.adp2990

Rapid polygenic adaptation in a wild population of ash trees under a novel fungal epidemic

Rapid evolution through small shifts in allele frequencies at thousands of loci is a long-standing neo-Darwinian prediction but is hard to characterize in the wild. European ash tree (Fraxinus excelsi...

www.science.org

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André Marques @amarques.bsky.social · Jun 18

1/7
I am very excited to announce our🌹NEW PAPER OUT IN 𝑁𝐴𝑇𝑈𝑅𝐸!🌹
𝐃𝐑𝐈𝐕𝐄 𝐓𝐎 𝐒𝐔𝐑𝐕𝐈𝐕𝐄: Bimodal centromeres in pentaploid dogroses shed light on their unique meiosis
With the Ritz and Kovařík labs we show a potential role for centromeres on 𝘙𝘰𝘴𝘢 𝘤𝘢𝘯𝘪𝘯𝘢 bizarre reproduction!
www.nature.com/articles/s41...

Bimodal centromeres in pentaploid dogroses shed light on their unique meiosis - Nature

Insights into the dogrose genome and centromeres explain their ability to achieve stable sexual reproduction.

www.nature.com

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Glen Dsouza @nonresidentdesi.bsky.social · Jun 13

Thrilled to share our new paper in @science.org describing our discovery that bacteria can switch from competitors to bonafide predators when resources run dry—arming nanoscale “spears” (T6SS) to stab & consume neighbours.

www.science.org/doi/10.1126/...

#MicroSKy #Microbiology

Antagonism as a foraging strategy in microbial communities

In natural habitats, nutrient availability limits bacterial growth. We discovered that bacteria can overcome this limitation by acquiring nutrients by lysing neighboring cells through contact-dependen...

www.science.org

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bioRxiv Genetics @biorxiv-genetic.bsky.social · May 23

Life-history trade-offs explain local adaptation in Arabidopsis thaliana https://www.biorxiv.org/content/10.1101/2025.05.18.654693v1

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Arun Durvasula @arundurvasula.bsky.social · May 22

Excited to share our work on using pathway-specific polygenic scores to discover gene-environment interactions www.medrxiv.org/content/10.1...

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Kelley Harris @kelleyharris.bsky.social · May 21

. @pnas.org just published the final version of our manuscript on how generation time and effective population size interact to shape vertebrate germline mutation rates, led by Luke Zhu and Annabel Beichman: 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

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Max Planck Institute of Molecular Plant Physiology 🌱🧪 @mpi-mp-potsdam.bsky.social · May 17

New research by @egonzalezduran.bsky.social shows that DSB repair suppresses gene transfer from chloroplasts to nucleus. With DSB repair impaired, transfer rates jump 20× — revealing how plants protect genome stability, with lessons beyond plant biology. Read: nature.com/articles/s41477-025-02005-w

Suppression of plastid-to-nucleus gene transfer by DNA double-strand break repair - Nature Plants

Inactivation of double-strand break repair pathways greatly increases the integration of plastid DNA into the nuclear genome of tobacco plants, highlighting the mutagenic potential of organellar DNA a...

nature.com

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Brady Lab @bradylabs.bsky.social · Apr 30

I'm so very excited to see this out - a single cell and spatial transcriptomic analysis in the rice root reveals mechanisms by which roots can respond to different below-ground growth conditions - including compaction. Congratulations to everyone for persisting in difficult times. rdcu.be/ej8Ui

Single-cell transcriptomics reveal how root tissues adapt to soil stress

Nature - Single-cell RNA sequencing and spatial transcriptomic approaches reveal major expression changes in outer root cell types when grown in soil versus gel conditions, and also uncover how...

rdcu.be

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Arnaud Martin @evolvwing.bsky.social · Apr 14

Awesome new paper by @lucalivraghi.bsky.social et al.
doi.org/10.1016/j.cu...
in @currentbiology.bsky.social
on the evo-devo of a butterfly color variation

enjoy the show!

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Tianyu Cui @tianyucui.bsky.social · Apr 14

It’s 🌿International Plant Appreciation Day🌿, so here’s a Corydalis melanochlora from the Hengduan Mountains. I can’t stop praising my favorite alpine flora 🥰
#LetsGoPlants #IamaBotanist

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Oregon Zoo @oregonzoo.bsky.social · Apr 10

hungry hungry rhinos

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Cécile Courret @cecilecourret.bsky.social · Nov 21

Our new paper on the rapid evolution of centromeres in Drosophila is out! 🚀 Discover how transposable elements and satellite DNAs shape centromere dynamics and drive karyotype evolution over short timescales. @amlarracuente.bsky.social 🌟 Check it out here: journals.plos.org/plosbiology/...

Turnover of retroelements and satellite DNA drives centromere reorganization over short evolutionary timescales in Drosophila

Centromeres reside in rapidly evolving, repeat-rich genomic regions, despite their essential function in chromosome segregation. This study of centromere evolution over short evolutionary timescales i...

journals.plos.org

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Nature @nature.com · Apr 3

Nature research paper: Haploid facultative parthenogenesis in sunflower sexual reproduction

https://go.nature.com/4hYpSY3

Haploid facultative parthenogenesis in sunflower sexual reproduction - Nature

Spontaneous parthenogenesis in sunflower has been used to develop a scalable doubled haploid breeding system.

go.nature.com

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Aylwyn Scally @aylwyn-scally.bsky.social · Mar 18

Our paper on ancient human population structure is now published. We find that the ancestors of modern humans lived in multiple populations during the period when Homo sapiens evolved in Africa. www.nature.com/articles/s41...

A structured coalescent model reveals deep ancestral structure shared by all modern humans - Nature Genetics

The cobraa model extends the pairwise sequentially Markovian coalescent to identify structured population history by examination of the model transition matrix. Applied to human polymorphism data, cob...

www.nature.com

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Maya Voichek @mayavoichek.bsky.social · Mar 17

1/ Transposable elements are often called "jumping genes" because they mobilize within genomes. 🧬
But did you know they can also jump 𝘣𝘦𝘵𝘸𝘦𝘦𝘯 cells? 🤯
Our new study reveals how retrotransposons invade the germline directly from somatic cells.
www.biorxiv.org/content/10.1...
A short thread 🧵👇

Drosophila follicle showing retrotransposons (pink & yellow) expressed in somatic cells infecting the oocyte

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Sean Flynn @seanflynn.bsky.social · Mar 3

We have a funded PhD position available in Exeter @exeter.ac.uk
Gene Regulation in Brain Development and Disease 🧬
Please share / repost

www.exeter.ac.uk/study/fundin...

Award details | Funding and scholarships for students | University of Exeter

www.exeter.ac.uk

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Arun Durvasula @arundurvasula.bsky.social · Feb 17

Excited to share a couple of new items (links below):
1. Our work on gene-environment interactions in the UKBiobank is up at the American Journal of Human Genetics
2. Our work on modeling ancient human population size history is up at Molecular Biology and Evolution

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Rosemary Mosco @rosemarymosco.com · Feb 7

Botany valentine. Another from years past. New one on Monday!

Beautiful red roses on a pink background with flowing script saying "Roses are red," Violets budding and blooming. "Violets are blue," Hydnora plants opening up looking like terrifying red mouths bursting from the hard sandy soil. "Hydnora are leafless, bizarrely fleshy, and incapable of producing chlorophyll," A splash of cute red and pink hearts. "And so are you. Happy Valentine's Day."

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Jake Harris @c-jake-harris.bsky.social · Feb 12

Very excited to share this new preprint from the lab (shorturl.at/l7lNq)! @hendersi.bsky.social si.bsky.social @camplantsci.bsky.social

CRISPR targeting of H3K4me3 activates gene expression and unlocks centromeric crossover recombination in Arabidopsis

H3K4me3 is a fundamental and highly conserved chromatin mark across eukaryotes, playing a central role in many genome-related processes, including transcription, maintenance of cell identity, DNA dama...

shorturl.at

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robinburns.bsky.social @robinburns.bsky.social · Jan 27

Really nice work!

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