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Items tagged with: evolution


Exciting research from one of my colleagues at #VirginiaTech

A late-Ediacaran crown-group sponge animal

https://www.nature.com/articles/s41586-024-07520-y

#evolution #sponges #marine


Jump to molecular #biology. 🧬Not all #evolution is #gradual. Life can leap forward in bursts in response to external stresses or internal #genomic changes, #epigenetics, #horizontal_gene_transfer, and massive re-arrangements.


I am very pleased to share with the mastodon community the first part of my PhD work:

High prevalence of Prdm9-independent recombination hotspots in placental #mammals

https://www.biorxiv.org/content/10.1101/2023.11.17.567540v1

This work was done in collaboration with @djivanprentout Alexandre Laverré, Théo Tricou and @duret_lbbe. (1/8)

#Recombination #PopGen #Evolution #gBGC #PRDM9


Stochasticity, determinism, and contingency shape genome evolution of endosymbiotic bacteria

https://www.nature.com/articles/s41467-024-48784-2

#evolution #microbiology #genomics


Primitive purine biosynthesis connects ancient geochemistry to modern metabolism

https://www.nature.com/articles/s41559-024-02361-4

#evolution #OriginOfLife #geochemistry


Widespread occurrence and diverse origins of polintoviruses influence lineage-specific genome dynamics in stony corals

https://academic.oup.com/ve/advance-article/doi/10.1093/ve/veae039/7670984

#viruses #coral #evolution #genomics


"A retroviral link to vertebrate myelination through retrotransposon-RNA-mediated control of myelin gene expression"

https://www.cell.com/cell/fulltext/S0092-8674(24)00013-8

I have great exaptations for this article

#viruses #evolution


Happy to share the latest manuscript from our lab, in which we propose that eukaryotes evolved from a genomic chimera of Asgard archaea and giant viruses.

https://www.biorxiv.org/content/10.1101/2024.04.22.590592v1

This is a controversial topic, but we believe we have strong evidence to suggest a critical viral role in eukaryogenesis.

#viruses #protists #eukaryotes #evolution #TreeOfLIfe #archaea


Two lifeforms merge in once-in-a-billion-years #evolutionary event
Scientists have caught a once-in-a-billion-years evolutionary event in progress, as two lifeforms have merged into one organism that boasts abilities its peers would envy. Last time this happened, Earth got plants. The #algae Braarudosphaera bigelowii has been found to have absorbed a #cyanobacteria called UCYN-A, which may be a huge step forward for #evolution.
https://newatlas.com/biology/life-merger-evolution-symbiosis-organelle/


Interested in evolutionary genomics/population genomics and plant genetics? Want to do your PhD in beautiful Stockholm?

We have two 4-year PhD student positions available in my group at Stockholm University. More info, see tanjaslottelab.se
Please repost.

#evolution #genomics #popgen #distyly #CropWildRelatives #PlantGenetics #ecrchat #phd 1/4


Fossil stingray (Cyclobatis sp.)
Upper Cretaceous. Approximately 100.5 million to 66 million years ago. When alive, this creature lived in warm, shallow seas and had a very short tail, which was fitted with a venomous stinger. Discovered in Haqil, Byblos, Lebanon. It just happens to look like an ancient space alien. #science #fossil #archeology #evolution #photo #nature #biology #wildlife


The Simons Foundation has amazing #postdoc #fellowships for anyone interested in #marine microbial #ecology or #evolution.

I'd love to sponsor anyone interested in viral diversity!

Please spread the word!

https://www.simonsfoundation.org/grant/simons-postdoctoral-fellowships-in-marine-microbial-ecology/?mc_cid=3818457af5&mc_eid=0969502559

#viruses #microbiology


Looking for some suggestions - I'm working with Archaeal genomic regions whose optimally fitting model seems to be Tamura-Nei (https://doi.org/10.1093/oxfordjournals.molbev.a040023).

Would it be too much to suspect the Archaeal region is under similar types of evolutionary pressure?

#archaea #microbiology #evolution #phylogenetics #bioinformatics


This week on the BioAudio podcast an introduction to species concepts created for my Y1 #biology and #Evolution students. https://bioaudio.buzzsprout.com/2234324/14324683


Journal of Systematics and Evolution is on Mastodon (as I just discovered). If you're a plant scientist or just interested in #Botany and #Evolution, give it a follow!
@JSE

Boost to relieve those who live in #Planticipation!
@plantscience


🧬🌟 Is evolution really random? A new study in Nature challenges the classic theory that DNA mutations are purely random and independent of the environment. The study shows that bacteria can adapt their mutation rates in response to different stresses. #evolution #mutation #bacteria https://phys.org/news/2024-01-evolution-random-previously-thought.html


Come work with me! My research unit at the University of Namur is hiring a #tenure track position in #ecology and #ecophysiology

I'm happy to answer any questions about working here!

https://jobs.unamur.be/emploi.2023-11-29.1234527512

#AcademicJob #evolution #teaching


New species concept just dropped ... no, wait, it actually seems useful. Wayne Maddison & Jeannette Whitton published in @SystBiol's #DiamondOA BSSB so it's free to read and free to authors. Even if the concept itself doesn't take off, I think lots of lectures are going to use the figures and ideas.

https://ssbbulletin.org/index.php/bssb/article/view/9358

#Systematics #SpeciesConcepts #Evolution #Conservation #OpenAccess


Happy to share our latest paper, in which we examined the timing at which different microbial groups colonized the ocean!

The first author (Carolina Martinez) is starting her lab at UC Santa Barbara in 2024 and is looking to recruit postdocs and PhD students, so if this looks interesting to you, please reach out to her!

A timeline of bacterial and archaeal diversification in the ocean

https://elifesciences.org/articles/88268

#microbiology #ocean #marine #evolution


Ongoing shuffling of protein fragments diversifies core viral functions linked to interactions with bacterial hosts

https://www.nature.com/articles/s41467-023-43236-9

#phages #viruses #evolution #genomics


Chance Favors the Prepared Genomes: Horizontal Transfer Shapes the Emergence of Antibiotic Resistance Mutations in Core Genes https://doi.org/10.1093/molbev/msad217 #science #evolution #biology #genome #evolgen_paper


PhD position in viral evolution and diversity @foaylward

Virginia Tech

Funded PhD positions in the Aylward Lab to study the #evolution and #genomics of giant #viruses. Both computational and wet-lab projects available.

See the full job description on jobRxiv: https://jobrxiv.org/job/virginia-tech-27778-funded-phd-position/?feed_id=64662

#ScienceJobs #hiring #research
Blacksburg #UnitedStatesUS ...
https://jobrxiv.org/job/virginia-tech-27778-funded-phd-position/?feed_id=64662


A new episode of the EMBO podcast is out. I spoke with Hsiao-Han Chang, Gytis Dudas, and Hedvig Tamman about viruses, hosts, spillovers, public health... And also starting a new lab, the challenges of mobility, mentorship, and Die Hard Dracula.

#EMBOPodcast #scicomm #SciencePodcast #Virology #Evolution #Microbiology

https://www.embo.org/podcasts/its-viruses-all-the-way-down-a-conversation-with-hsiao-han-chang-gytis-dudas-and-hedvig-tamman/


#PhD positions available in my group for Fall 2024 - projects focusing on #GiantVirus diversity and #evolution. Opportunities for both molecular wet-lab and #bioinformatics research.

The lab is fun, supportive, and inclusive, and we have many cool new viruses we are studying, so come join us!

Please boost and spread the word!

https://jobrxiv.org/job/virginia-tech-27778-funded-phd-position/


October's cover image accompanies the article Population Genomics of Two Closely Related Anhydrobiotic Midges Reveals Differences in Adaptation to Extreme Desiccation https://doi.org/10.1093/gbe/evad169 #science #evolution #biology #genome #evolgen_paper


For a new week: I dug into the history of a definition I’ve used my entire career, and discovered… we may not need it?

Don’t ask “When is it coevolution?” — ask “How is it coevolution?”

#evolution #ecology #science

https://www.molecularecologist.com/2023/10/13/when-coevolution-definition-history/


Highlight: Unlocking the Ancient Origins of Cell Death

https://doi.org/10.1093/gbe/evad172

"They propose that early protoeukaryotes were predators, relying on bacterial prey. These bacteria, in response to predation, produced toxins as a defense mechanism. Over time, these bacteria were domesticated to serve as mitochondria within eukaryotic cells, and their toxins evolved into apoptotic factors. "

#evolution #eukaryotes #apoptosis #mitochondria


New blog post just dropped!

"Assembly theory is cool... but doesn't quite do what its inventors say it does."

http://www.johannesjaeger.eu/blog/assembly-theory-is-cool

reviewing this recent Nature paper:

https://www.nature.com/articles/s41586-023-06600-9

news & views here:

https://www.nature.com/articles/d41586-023-03061-y

#evolution #complexityscience #innovation #possibilityspace


'Both genomes had been analysed before, but the fragmented assemblies had scaffold sizes comparable to the length of long reads prior to assembly. Our new assemblies illustrate how long-read technologies allow for a much better representation of species genomes. We are now able to conduct more accurate downstream assays based on more complete gene and transposable element predictions.'
#Preprint #Evolution #Genomics

https://www.biorxiv.org/content/10.1101/2023.10.06.561169v1


New #ISEPpapers #preprint! Encyclopaedia of #DNApolymerases localized in #organelles: Evolutionary contribution of diverse #bacteria including the proto-#mitochondrion https://www.biorxiv.org/content/10.1101/2023.08.28.554543v1 #eukaryogenesis #evolution #microbes


Chromosome-Scale Genome Assembly of the Solitary Parasitoid Wasp Microplitis manilae Ashmead, 1904 (Braconidae: Microgastrinae) https://doi.org/10.1093/gbe/evad144 #science #evolution #biology #genome #evolgen_paper


Long-Read Sequencing Reveals Rapid Evolution of Immunity- and Cancer-Related Genes in Bats https://doi.org/10.1093/gbe/evad148 #science #evolution #biology #genome #evolgen_paper


How did #eukaryotes evolve for extreme temps? https://www.futurity.org/high-temp-eukaryotes-2972442-2/ #protists

#ExtremeEnvironments offer an unprecedented opportunity to understand #microbial #eukaryotic #ecology, #evolution, and #genome #biology: Hannah Rappaport & Angela Oliverio https://www.nature.com/articles/s41467-023-40657-4

“several lineages of #amoebae were often recovered from extremely high temperature environments. Studying those lineages may yield great insight into how eukaryotic cells can adapt to life in extremely hot environments.”


This was a fun way to spend my lunch break (full disclosure - I am married to one of the developers).

Look out for it - it will be traveling round the US to libraries and museums

https://today.ku.edu/2023/07/25/ku-natural-history-museum-host-venomventure-new-science-themed-escape-room

#VENOMventure #aVENENOtura #EscapeRoom #bilingual #evolution

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