Avril Harder

@avril-m-harder.bsky.social

Computational biologist, Evolutionary Analysis Group @ HudsonAlpha Genome Sequencing Center · working from Birmingham, AL · evolution, genomics, plant pangenomes. Opinions mine.

The sorghum pangenome, available on the JGI’s Phytozome portal, opens more possibilities to breed sorghum and other crops for biofuels and bioproducts. Learn more in the latest episode of Genome Insider: 🖥️ 🧬🌱 @danforthcenter.bsky.social

A Spectrum of Sorghum | Joint Genome Institute

Hear from Nadia Shakoor (Donald Danforth Plant Science Center), John Lovell (HudsonAlpha Institute for Biotechnology), and Jeremy Schmutz (head of the JGI’s Plant Program, HudsonAlpha) about how a sor...

jgi.doe.gov

We are often asked whether pangenomes are worth the hassle. The files can be large and methods to explore them are much more challenging than linear references. Earlier this week, we preprinted a clear example of how and why pan-genome graphs are so important for trait discovery.

bioRxiv Genomics@biorxiv-genomic.bsky.social · 4mo ago

Dissecting the regulatory and genomic drivers of the dichogamy determining G-locus in pecan https://www.biorxiv.org/content/10.64898/2026.05.14.725045v1

Very excited to announce that the final version of this is live now at @nature.com!! www.nature.com/articles/s41...

A sorghum pangenome reference improves global crop trait discovery - Nature

A pangenome reference for the phenotypically diverse crop sorghum aims to help accelerate future efforts to breed crops that are better adapted to changing environments.

nature.com

John Lovell@jotlovell.bsky.social · last yr.

This began as a @jgi.doe.gov Community Science Program (CSP) project in 2017 with the goal of uniting the diverse sorghum breeding and mapping populations in the framework of a 'pangenome'. Thanks to a huge efforts across many stakeholders, the article was preprinted today. A 🧵 w/ what we found:

"Sure, bedtools is great and happily used by literally everyone, but, it could be bedder" That takes some serious courage. Kudos Brent and @aaronquinlan.bsky.social !

Aaron Quinlan (he/him)@aaronquinlan.bsky.social · 10mo ago

We are thrilled to announce the first official release (v0.1.8) of #𝗯𝗲𝗱𝗱𝗲𝗿, the successor to one of our flagship tool, #𝗯𝗲𝗱𝘁𝗼𝗼𝗹𝘀! Based on ideas we conceived of long ago (!), this was achieved thanks to the dedication of Brent Pedersen. 1/n

my new idea is to look at runs of homozygosity (ROH) only for mutations that are restricted to heterozygous state in other pops, suggesting they are low freq. and enriched for deleterious stuff. a good measure of inbreeding. I call my new statistic

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This began as a @jgi.doe.gov Community Science Program (CSP) project in 2017 with the goal of uniting the diverse sorghum breeding and mapping populations in the framework of a 'pangenome'. Thanks to a huge efforts across many stakeholders, the article was preprinted today. A 🧵 w/ what we found:

bioRxiv Genomics@biorxiv-genomic.bsky.social · last yr.

Developing future resilience from signatures of adaptation across the sorghum pangenome https://www.biorxiv.org/content/10.1101/2025.08.01.667986v1

🚨 We're looking for a #postdoc to join our team at the Center for Bioenergy Innovation at Oak Ridge National Labs, TN 🚨 Project: Advance poplar bioenergy by understanding adaptive trait/genomic variation — breeding/pop gen/bioinformatics Apply by 18-Aug Apply here: jobs.ornl.gov/job/Oak-Ridg...

Postdoctoral Research Associate - Plant Systems Biology & The Center for Bioenergy Innovation (CBI)

Postdoctoral Research Associate - Plant Systems Biology & The Center for Bioenergy Innovation (CBI)

jobs.ornl.gov

That time in 2013 when this crabeater seal decided to see what this noisy orange menace was doing in its territory....In 2013 near Peter I Island in #Antarctica on our research cruise (LMG 13-12). Bonus (the 'wait for it' at the end): amazing sunset/sunrise around 1am that night :) 🧪🌎🦑🐧🇦🇶

Quick break from the doom and gloom for science! We're really proud of this one. We found that two major effect loci on duplicated versions of the same ancestral chromosome play a major role in run timing diversity across four species of salmon (pink, chum, sockeye, coho) shorturl.at/GISX2

Diversification of large-effect loci in a duplicated genomic region leads to complex phenotypes

Whole genome duplication provides evolutionary opportunities to increase biological complexity and phenotypic diversity by selective retention of duplicated genes. We identify a small genomic region a...

shorturl.at

"Our results reveal substantial differences between pipelines, with many inversions either misrepresented or lost. Most notably, recovery rates remain strikingly low, even with the most simple simulated genome sets, highlighting major challenges in analyzing inversions in pangenomic approaches."

bioRxiv Bioinfo@biorxiv-bioinfo.bsky.social · 2y ago

Investigating the topological motifs of inversions in pangenome graphs https://www.biorxiv.org/content/10.1101/2025.03.14.643331v1

Our paper on the past, present, and genomics-enabled future of American chestnut (Castanea dentata) tree breeding for resistance to invasive pathogens is on BioRxiv. 🧵with some background and a few things we found 👇 bsky.app/profile/bior...

bioRxiv Genomics@biorxiv-genomic.bsky.social · 2y ago

Improving American chestnut resistance to two invasive pathogens through genome-enabled breeding https://www.biorxiv.org/content/10.1101/2025.01.30.635736v1

Are you headed to #PAG32 and interested in plant reproduction? 🌼 Come check out my talk in the “Sex Chromosomes and Sex Determination” session on Saturday! I’ll be talking about ancient ZW sex chromosomes, the impact of polyploidy on sexual system evolution, “leaky” dioecy, and much more.

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