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Ryan P. O’Donnell

@rpodonnell.bsky.social
1.3K followers 782 following 101 posts

Mycologist & botanist @EcoEvo_ANU | Orchids & their mycorrhizal fungi: phylogenomics, genomes, speciation, popgen, systematics & taxonomy | looking for a postdoc 👀 | rpodonnell.github.io 🍄🌿🌷📖🇵🇭🏳️‍🌈∞

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Reposted by Ryan P. O’Donnell
phy_papers @phypapers.bsky.social · 19/09/2026
An early-diverging Caladeniinae orchid reveals diversification of terpene and apocarotenoid pathways underlying floral scent evolution www.biorxiv.org/content/10.64898/20…
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Prof. Keiko Torii @keikoutorii.bsky.social · 18/08/2026
I am proud to announce that I am making non-AI used, hand-drawn (using mouse) figures for a review article. It's very pretty. Stay tuned!🌱😘👩‍🎨
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Ryan P. O’Donnell @rpodonnell.bsky.social · 17/08/2026
www.abc.net.au/news/2026-08...
abc.net.au
Fungi fans celebrate its recognition as nature's third living kingdom
The Australian Labor Party's national platform now explicitly recognises fungi alongside flora and fauna.
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Genome Biology and Evolution @genomebiolevol.bsky.social · 17/08/2026
Zhang et al. generate the first chromosome-scale, haplotype-resolved nuclear genome assembly for any Australian terrestrial orchid 🔗 academic.oup.com/gbe/article/... #societyjournal #genome #evolution
academic.oup.com
Interhaplotype Inversions and Repeat Expansion in the Sexually Deceptive Orchid Chiloglottis trapeziformis
Abstract. High-quality nuclear genome resources remain scarce for most orchids, particularly Australia's diverse terrestrial lineages. Chiloglottis trapezi
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Ryan P. O’Donnell @rpodonnell.bsky.social · 11/08/2026
Congrats to Zirui and the team on the new Chiloglottis genome - the first Australian orchid genome! Huge step forward in the quest to understand the evolution of sexually deceptive pollination and mycorrhizal niche hyperspecificity 👏👏👏
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Erin Cook @erincook.bsky.social · 04/08/2026
incredible way to describe Murnane
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Rafael Marcondes @rafamarcondes.bsky.social · 01/08/2026
To the reviewer and AE who were *adamant* that we should delete these watercolors: FYI im getting loads of compliments on them. Everyone says we need more art like that in peer-reviewed pubs.
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Ryan P. O’Donnell @rpodonnell.bsky.social · 27/07/2026
Incredible
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Dr. Stephanie @punkrockscience.bsky.social · 22/07/2026
I just saw a meme that said “get in losers, we’re reclaiming the emdash”. People. PEOPLE. Where are your STANDARDS? It CLEARLY should be “get in, losers — we’re reclaiming the em dash.”
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The Tattooed Professor @schwessinger.bsky.social · 13/07/2026
Celeste Linde on the big stage at #icom2026 talking about orchid mycorrhizal fungi. Pure joy.
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Ryan P. O’Donnell @rpodonnell.bsky.social · 12/07/2026
Very jealous of everyone at #ICOM2026 right now! Sad I can’t be there 😭
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Ryan P. O’Donnell @rpodonnell.bsky.social · 11/07/2026
By the end of my Arts undergrad, I got good enough at writing to the point that I could smash out a 3000 word essay in the two hours before it was due, armed with nothing but caffeine and cortisol.
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Stephanie Rodgers 🍉 @bootstheory.bsky.social · 26/06/2026
You just gotta let scientists be weird little nerds in their weird little niche interest areas and accept that the benefits to the wider community, and thus to The Economy, will flow naturally from that
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Björn Usadel @usadellab.bsky.social · 25/06/2026
1/8 What if the genomic features we associate with fungal pathogens were also used by mutualists? We assembled 41 scale lichen genomes across 11 Peltigera species with 30 chromosome scale and 5 T2T revealing an unexpected genomic toolkit behind lichen symbiosis. doi.org/10.64898/202... #lichen
doi.org
A chromosome-scale super-pangenome of the lichen genus Peltigera reveals genome architecture and expanded interaction repertoires shared across pathogenic and mutualistic fungi
Fungi engage in associations with other organisms across a continuum from pathogenic to mutualistic lifestyles. Hence, they require a compendium of molecular capacities, including partner recognition,...
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Ryan P. O’Donnell @rpodonnell.bsky.social · 21/06/2026
All I wanted to do was go outside and look at plants and now I’m stuck inside looking at nerds gummy clusters (bonus points if you can guess the protein from the conserved motif)
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Ryan P. O’Donnell @rpodonnell.bsky.social · 20/06/2026
I hope this is how science remembers me (also congrats on the paper @ethanbeaver.bsky.social 🦋)
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Ryan P. O’Donnell @rpodonnell.bsky.social · 05/03/2026
Revisions accepted, PhD is done and dusted! 🎉🥳
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Ryan P. O’Donnell @rpodonnell.bsky.social · 27/02/2026
PhD accepted pending minor revisions! 🎉 more importantly, I’m stoked that my reviewers enjoyed my Moby Dick quotes 🐋
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Ryan P. O’Donnell @rpodonnell.bsky.social · 11/12/2025
After four years of work, I have finally submitted my PhD thesis. At long last, the low res fireworks gif now plays for me 🎆
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Scott 𐚁 🦇 Cave 🦇 @hellabarnes.bsky.social · 18/01/2024
like 50% of orchid pollination is horny male insects having their day ruined
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Life Science Studios - Scientific Illustration @lifesciencestudios.bsky.social · 29/10/2025
Check out the recent publication in Annual Reviews of Ecology, Evolution, and Systematics where the authors explore genomic species delimitation in depth. You'll see a number of #sciart figures I created to help explain some of the concepts! www.annualreviews.org/content/jour...
A scientific figure showing speciation and explaining the concept of species delimitation, and including a quote by the paper's first author.
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Leho Tedersoo @tedersoo.bsky.social · 20/10/2025
Fungal phylum-level classification update now available! Used "innovative taxonomy" to describe >100 taxa, from species to phylum, based on long reads, characteristic nucleotides and env-samples. mycokeys.pensoft.net/article/1616... #fungi #taxonomy #PacBio #classification #eDNA
New fungal phylum-level system, with red font indicating novel taxa and size taxonomic diversity.
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Dr. Hilary Rose Dawson @hilaryrosed.bsky.social · 18/09/2025
I just passed my 50,000th identification on @inaturalist.bsky.social! Identifying is a huge but often ignored part of the #iNaturalist community and dataset so I wanted to share why and how I identify. 1/14 🧪 #ecology #taxonomy #botany #CommunityScience
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Bret Beheim @babeheim.bsky.social · 16/09/2025
How to quantify the impact of AI on long-run cultural evolution? Published today, I give it a go! 400+ years of strategic dynamics in the game of Go (Baduk/Weiqi), from feudalism to AlphaGo!
Miyagawa Shuntei's 1898 painting, "Playing Go (Japanese Chess)"
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Adam Frew @frewecologist.bsky.social · 17/09/2025
Most of us use rDNA for community analyses of AM fungi. Intragenomic variation in rDNA of AM fungi can be pretty huge, depending on the region. nph.onlinelibrary.wiley.com/doi/10.1111/...
nph.onlinelibrary.wiley.com
The pitfalls of rDNA‐based AMF identification: a comparative analysis of rDNA and protein‐coding genes
Intragenomic polymorphism of rDNA in arbuscular mycorrhizal fungi (AMF) has been largely overlooked in ecological and taxonomic studies, and the reliability of nuclear rDNA regions for species ident.....
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Ryan P. O’Donnell @rpodonnell.bsky.social · 12/09/2025
Thanks to everyone who came along/tuned in to my PhD exit seminar! What a thing to do at the end of almost four years. So close to submitting, just need to tidy up this last chapter and I’m done! PS does anyone need a mycology/botany genomics/systematics postdoc? 👀
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Mario Fernández-Mazuecos @mfmazuecos.bsky.social · 10/09/2025
A meme for #phylogenetics people.
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Ryan P. O’Donnell @rpodonnell.bsky.social · 03/09/2025
My final PhD exit seminar is fast approaching! Tune in if you’d like to hear what I’ve been up to the last four years. There’s something for everyone: fungal genomics and species delimitation (38 new Rhizoctonia genomes), orchid phylogenomics and popgen, fungal taxonomy, it’s gonna be fun 🤙
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ANU Research School of Biology @biologyanu.bsky.social · 22/07/2025
Join us on campus & online on Thursday, 31 July 2025 at 1pm for a seminar by Dr Darren Wong, Postdoctoral Fellow from the Peakall Group, RSB, ANU. Details: tiny.cc/gizp001
tiny.cc
E&E Seminar Series: A symphony of colour and scents: Complex anthocyanin and terpene synthase mechanisms underpin the evolution of species-rich Australian orchids
Many flowering plants have evolved diverse strategies to communicate with and attract animal pollinators. We have discovered exciting new evidence for the role of anthocyanins and terpenes in the evol...
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Ryan P. O’Donnell @rpodonnell.bsky.social · 11/07/2025
Thanks @westerdijkinst.bsky.social !
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Biodiversity Heritage Library @biodivlibrary.bsky.social · 11/06/2025
📢 The #BiodiversityHeritageLibrary is entering a bold new chapter – and we need your help! Today we release our official Call for Support. We’re seeking new hosts for BHL’s staff, infrastructure, and services. Learn more: blog.biodiversitylibrary.org/2025/06/tran... #BHLTransition #ILoveBHL
A red flower on a green stem withe the words: BHL Call for support now open overlayed.
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Trevor A. Branch @trevorabranch.bsky.social · 02/07/2025
In an unconscionable decision, the Smithsonian Institute has decided to no longer support the Biodiversity Heritage Library from 1 Jan 2026. Please someone step up and take it over.
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Ashley B. Cohen @ashleybrookecohen.bsky.social · 19/06/2025
so cool! academic.oup.com/gbe/article/... Nice work @martinsteinegger.bsky.social et al :)
academic.oup.com
Unicore Enables Scalable and Accurate Phylogenetic Reconstruction with Structural Core Genes
Abstract. The analysis of single-copy core genes, common to most members of a clade, is important for key tasks in biology including phylogenetic reconstru
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Ryan P. O’Donnell @rpodonnell.bsky.social · 24/06/2025
At long last, our manuscript ‘Rise up, Rhizoctonia: moving to one fungus, one name in the Ceratobasidiaceae’ has finally been published in Persoonia 🎉 Here we resolve several longstanding taxonomic issues within Ceratobasidiaceae and present a unified Rhizoctonia www.persoonia.org/images/Volum...
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Ryan P. O’Donnell @rpodonnell.bsky.social · 12/05/2025
#mycosky #mycology bluesky! I’m looking for some inspiration - what are some of your favourite recent (published within the last 1–3 years) fungal comparative phylogenomic studies that you’ve read?
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Ryan P. O’Donnell @rpodonnell.bsky.social · 07/05/2025
26 freshly sequenced whole genomes of undescribed orchid-associated Rhizoctonia spp. 🤙 14 more genomes to go and then I’m on the home stretch for the PhD 🫨
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Ryan P. O’Donnell @rpodonnell.bsky.social · 13/03/2025
After 372 days since submission, and 14 reviewers who committed to reviewing but didn’t wind up submitting a review, our Rhizoctonia nomenclature manuscript has finally been accepted for publication in Persoonia! 🥲
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Ryan P. O’Donnell @rpodonnell.bsky.social · 11/03/2025
Had such a great time over the weekend talking with artist Keg de Souza and panel chair Richard Morecroft about fungi and the intersections of art and science for ‘Magic Mycelium’ at the Bundanon Art Museum - such an incredible art space and landscape.
Panel discussion at the Bundanon art museum with three people, Richard Morecroft, Keg de Souza, and Ryan O’Donnell seated left to right in that orderRichard Morecroft, Keg de Souza and Ryan O’Donnell standing left to right in front of the Shoalhaven River at the Bundanon Art Museum
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Ryan P. O’Donnell @rpodonnell.bsky.social · 05/03/2025
At long last, the final typeset version of our Diurideae manuscript has finally been published in Systematic Biology! Check it out at doi.org/10.1093/sysb...
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The Australia Institute @australiainstitute.org.au · 05/02/2025
Australia’s university Vice-Chancellors are among the highest paid in the world. Australia’s PhD students are some of the lowest paid. That is not a sign of a healthy education system. Read more from @jack-thrower.bsky.social:
australiainstitute.org.au
While Uni Vice-Chancellors rake in millions, young researchers struggle to survive
Australia's university Vice-Chancellors are among the highest paid in the world, while Australia's PhD students are some of the lowest paid. That is not a sign of a healthy education system.
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Catherine Grueber @cegrueber.bsky.social · 29/01/2025
Out now in @nature.com! Our comprehensive meta-analysis of global terrestrial and marine genetic diversity demonstrates rapid loss of genetic diversity and identifies conservation interventions that could mitigate this process www.nature.com/articles/s41... 🧪🌍🦤🧬 #consgen #PopGen
nature.com
Global meta-analysis shows action is needed to halt genetic diversity loss - Nature
A comprehensive meta-analysis of global terrestrial and marine genetic diversity covering more than three decades of research demonstrates rapid loss of genetic diversity and identifies conservation i...
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ARC Tracker @arc-tracker.bsky.social · 16/01/2025
“The PhD stipend is $33,511 … well below minimum wage of $47,627” “Universities can raise the stipend to a maximum of $52,352, but a ACGR survey found none have done so. The highest stipend is just over $40,000 … with the average at $34,244.” #RaiseTheStipend
theguardian.com
PhD student Jesse Gardner-Russell earns $20 an hour. Experts say low pay is turning Australia’s best and brightest away
The University of Melbourne student whose work could contribute to curing blindness says ‘people are shocked to find out how unlivable it is’
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Ryan P. O’Donnell @rpodonnell.bsky.social · 01/01/2025
In no particular order, here are my favourite books from 2024:
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Joana Meier @joanameier.bsky.social · 11/11/2024
My entire team wrote an opinion paper about Common misconceptions of speciation research. Each section is written by 1-2 team members. The bulk of the writing happened during two writing retreats. It was a lot of fun and I am very happy with the result. academic.oup.com/evolinnean/a...
academic.oup.com
Common misconceptions of speciation
Abstract. Speciation is a complex process that can unfold in many different ways. Speciation researchers sometimes simplify core principles in their writin
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Ryan P. O’Donnell @rpodonnell.bsky.social · 29/12/2024
Finally deactivated my X account 🎉
Screenshot of X Account deactivation message which reads “Deactivated. Your account is deactivated. Sorry to see you go. #GoodBye”
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Andrew Hipp @andrewlhipp.bsky.social · 27/12/2024
Fascinating phylogenomic study of Oak Family by Shui‐Yin Liu et al. (including @carolsiniscalchi.bsky.social) showing that hybridization & ILS both generate gene-tree discordance in the family; ILS contributes ~3x as much as hyb'n to discordance in Quercus, but both matter. doi.org/10.1111/jipb...
Figure 3. Plots showing the relative contributions of incomplete lineage sorting (ILS), gene tree estimation error, and gene flow to the
observed gene tree discordance, across two datasets and two taxonomic levels
The Hyb‐Seq (A–B) and transcriptome (C–D) datasets are represented here by the HYB‐98RT and RNA‐2821RT datasets, respectively. R2 denotes the total
proportion of gene tree variation explained by the model. Relative importance with 95% bootstrap confidence intervals is decomposed with the “lmg”
method and regressors of log transformations and summed to 100%.Figure 2. Discordance between nuclear and chloroplast phylogenies for oaks and relatives
(A) Cophylogeny showing incongruence between the nuclear ASTRAL (left; HYB‐98RT) and unpartitioned chloroplast maximum likelihood (ML) (right) trees.
Tip labels are shown in Figure S15. Clade frequencies of gene trees from the coalescent simulations are shown near the nodes; clade frequencies
associated with deep cytonuclear discordances are red and enlarged.Figure S21. Species networks from reduced-representation datasets of oaks and Fagaceae. A. Optimal network under the “planA” taxon set of Fagaceae using the Hyb-Seq dataset (represented by the HYB-114RT dataset here). B. Optimal network under the “planB” taxon set of Fagaceae using the Hyb-Seq dataset. C. Optimal network under the “planC” taxon set of oaks using the Hyb-Seq dataset. D. Optimal network under the “planA” taxon set of Fagaceae using the transcriptome dataset (represented by the RNA-4853RT dataset here). E. Optimal network under the “planB” taxon set of Fagaceae using the transcriptome dataset. F. Optimal network under the “planC” taxon set of oaks using the transcriptome dataset. Dashed red curved branches denote the minor edge of a reticulate node while solid blue curved branches denote the major edge of a reticulate node. Values next to curved branches denote the inheritance probabilities. A reticulate node with an asterisk denotes that its parents contributed relatively equivalent inheritance probabilities (~ 0.5 vs. 0.5). Abbreviations: sect. CY, sect. Cyclobalanopsis.
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Thomas Mesaglio @thebeachcomber.bsky.social · 25/12/2024
Keeping track of new taxonomic changes and species descriptions can be tough, so I've created a living spreadsheet to document recent taxonomic works relating to Australian plants, and provide an easy to access central resource. It will be updated every week or two docs.google.com/spreadsheets...
docs.google.com
Updates to Australian plant taxonomy
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Bird account @dialecticbio.bsky.social · 23/12/2024
Very excited to see this tool come out (and just before Christmas). I've been following it on Github and it looks incredible. "Unicore enables scalable and accurate phylogenetic reconstruction with structural core genes" 📝 www.biorxiv.org/content/10.1... 💾 github.com/steineggerla...
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