Anna Dewar
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annadewar.bsky.social
Anna Dewar
@annadewar.bsky.social
Career Development Research Fellow at St John's College, University of Oxford.

Evolution, comparative genomics, cooperation, horizontal gene transfer, plasmids.

https://www.anna-dewar.com/
Thank you Xavier, really glad to hear you’ve enjoyed reading it!
October 29, 2025 at 10:37 AM
Amazing, congratulations Tabea!! 🥳
September 22, 2025 at 9:24 AM
Thanks Ashleigh! 😊
August 22, 2025 at 1:54 PM
Such a nice summary, thanks Jesse!! Hope we cross paths soon :)
August 22, 2025 at 8:00 AM
Reposted by Anna Dewar
Get OrthoFinder here github.com/OrthoFinder/...

Read the preprint here www.biorxiv.org/content/10.1...

Millions of species here we come!

(10/10)
July 16, 2025 at 6:00 PM
Haha sounds good! Thanks for your interest in our work 😊
June 21, 2025 at 10:49 PM
It's just that the transfer of plasmids doesn't seem to appreciably facilitate the invasion and maintenance of cooperation in bacteria. 2/2
June 21, 2025 at 10:44 PM
Antibiotic resistance mechanisms are sometimes cooperative, but often they're not. So our work only applies to those with a cooperative resistance mechanism.

Just to be clear, plasmids are important for transferring lots of useful genes, including antibiotic resistance, among bacteria. 1/2
June 21, 2025 at 10:43 PM
Hi! Here's a couple of additional papers we've published on this question:
doi.org/10.1038/s415...
& doi.org/10.1093/evle...

Together they provide pretty good evidence, using genomic analyses and theory, that plasmid transfer doesn't really impact the evolution of cooperation in bacteria.
Plasmids do not consistently stabilize cooperation across bacteria but may promote broad pathogen host-range - Nature Ecology & Evolution
Horizontal gene transfer could stabilize cooperation in bacteria because plasmids could promote the transfer of genes encoding public goods. However, the authors use comparative analysis and theoretic...
doi.org
June 21, 2025 at 10:25 PM