#eukaryogenesis — Public Fediverse posts

Before the 'Oxygen Apocalypse', Earth was purple, the oceans ferrous, and H₂O's oxygen safely locked away 🟣

Then, bacteria developed a quantum lockpick 🗝️⚡

The seas rusted and the ancients died out. Complex organisms burn the fuel of this cataclysm still, but pay the price by ageing 🦠

This is the story of how symmetry saves us from the flames ⚛️

Full post: https://keiran-rowell.github.io/oxygen/2026-04-02-the-oxygen-apocalypse/

#oxygen #science #scicomm #GreatOxidationEvent #photosynthesis #eukaryogenesis #quantumbiology #geology

Before the 'Oxygen Apocalypse', Earth was purple, the oceans ferrous, and H₂O's oxygen safely locked away 🟣

Then, bacteria developed a quantum lockpick 🗝️⚡

The seas rusted and the ancients died out. Complex organisms burn the fuel of this cataclysm still, but pay the price by ageing 🦠

This is the story of how symmetry saves us from the flames ⚛️

Full post: https://keiran-rowell.github.io/oxygen/2026-04-02-the-oxygen-apocalypse/

#oxygen #science #scicomm #GreatOxidationEvent #photosynthesis #eukaryogenesis #quantumbiology #geology

I am happy to share the unfinished but nevertheless fascinating autobiography of the late Thomas Cavalier-Smith, written in 2020, shortly before Tom passed away in 2021. I thank Ema Cavalier-Smith for sharing the text with me. I recently finished curating the text (small corrections and referencing) https://zenodo.org/records/18733367 #Evolution #Eukaryogenesis #biology #CellBiology

I am happy to share the unfinished but nevertheless fascinating autobiography of the late Thomas Cavalier-Smith, written in 2020, shortly before Tom passed away in 2021. I thank Ema Cavalier-Smith for sharing the text with me. I recently finished curating the text (small corrections and referencing) https://zenodo.org/records/18733367 #Evolution #Eukaryogenesis #biology #CellBiology

Mid-Proterozoic Expansion Of Passive Margins And Reduction In Volcanic Outgassing Supported Marine Oxygenation And Eukaryogenesis
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https://doi.org/10.1016/j.epsl.2025.119683 <-- shared paper
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https://zenodo.org/records/17353904 <-- supplementary data
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#proterozoic #platetectonics #tectonics #deepcarboncycle #eukaryogenesis #evolutionoflife #life #evolution #geology #geologichistory #pangea #supercontinent #diversification #volcanic #offgassing #marine #thermodynamics #model #modeling #spatialanalysis #spatiotemporal #nuna #subduction #structuralgeology #CO2 #carbondioxide #climate #eukaryotic #BoringBillion #rodinia #oceanbasins #marinechemistry #outgassing #global #earth

Mid-Proterozoic Expansion Of Passive Margins And Reduction In Volcanic Outgassing Supported Marine Oxygenation And Eukaryogenesis
--
https://doi.org/10.1016/j.epsl.2025.119683 <-- shared paper
--
https://zenodo.org/records/17353904 <-- supplementary data
--
#proterozoic #platetectonics #tectonics #deepcarboncycle #eukaryogenesis #evolutionoflife #life #evolution #geology #geologichistory #pangea #supercontinent #diversification #volcanic #offgassing #marine #thermodynamics #model #modeling #spatialanalysis #spatiotemporal #nuna #subduction #structuralgeology #CO2 #carbondioxide #climate #eukaryotic #BoringBillion #rodinia #oceanbasins #marinechemistry #outgassing #global #earth

#EukaryoticCells emerged as #evolutionary algorithmic phase transition: #Eukaryogenesis happened abruptly, led by the tension of increasing gene length and the constraints on producing longer #proteins // #EvolutionaryBiology #ComputerBiology #evolution

https://nachrichten.idw-online.de/2025/04/17/the-eukaryotic-cell-emerged-as-an-evolutionary-algorithmic-phase-transition

The eukaryotic cell emerged as an evolutionary algorithmic phase transition / Eukaryogenesis happened abruptly, led by the tension of increasing gene length and the constraints on producing longer proteins / Evolvement of the eukaryotic cell is the most significant increase in complexity in the history of life's evolution on Earth 👉 https://press.uni-mainz.de/eukaryotic-cell-emerged-as-evolutionary-algorithmic-phase-transition/

#EvolutionaryBiology #ComputerBiology #eukaryotic #genes #proteins #evolution #EukaryoticCells #eukaryogenesis #biology #physics

Uncovering the Ancient Origins of Key Immune Machinery https://www.ualberta.ca/en/department-of-medicine/news-events/department-news/2024/10/joel-dacks-uncovering-the-ancient-origins-of-key-immune-machinery.html

Evolutionary origins of the #lysosome-related #organelle sorting machinery reveal ancient homology in post-#endosome trafficking pathways: Kiran More et al. https://www.pnas.org/doi/10.1073/pnas.2403601121

"the BLOC machinery plays an important role in #microbes today for our ecosystem and health and may help to explain the #evolution of the basic cellular configuration over 1.5 billion years ago."

#Protists #ImmuneSystem #Eukaryogenesis

Uncovering the Ancient Origins of Key Immune Machinery https://www.ualberta.ca/en/department-of-medicine/news-events/department-news/2024/10/joel-dacks-uncovering-the-ancient-origins-of-key-immune-machinery.html

Evolutionary origins of the #lysosome-related #organelle sorting machinery reveal ancient homology in post-#endosome trafficking pathways: Kiran More et al. https://www.pnas.org/doi/10.1073/pnas.2403601121

"the BLOC machinery plays an important role in #microbes today for our ecosystem and health and may help to explain the #evolution of the basic cellular configuration over 1.5 billion years ago."

#Protists #ImmuneSystem #Eukaryogenesis

#Eukaryogenesis entailed transfer of DNA from #mitochondria to nuclear genomes. @BrEUssMartin re a #PLOSBiology study of #Numtogenesis, extending this process to human somatic cells, correlating with #aging & disease. Primer: https://plos.io/3SW8M3d Paper: https://plos.io/3AyrkAq

#Eukaryogenesis entailed transfer of DNA from #mitochondria to nuclear genomes. @BrEUssMartin re a #PLOSBiology study of #Numtogenesis, extending this process to human somatic cells, correlating with #aging & disease. Primer: https://plos.io/3SW8M3d Paper: https://plos.io/3AyrkAq

https://www.biorxiv.org/content/10.1101/2024.07.04.601786v1

Oxygen processing and electron transport infrastructure in 'Asgard' archaea.

These are the closest relatives to the multi-celled complex lifeforms we see.

Their discovery completely changed how scientists understand the tree of life.

This paper discovers Asgard species and proteins that allow them to 'breathe' oxygen. It was thought archea absorbed bacteria for oxygen processing, but that might not be necessary.

#originsoflife #archaea #eukaryogenesis #evolution

#ISEPpapers 20: April, May, and June 2023 https://www.isep-protists.com/post/iseppapers-20

Your twentieth digest of papers and preprints published by members of the International Society for Evolutionary #Protistology is here!

#protists #protozoa #evolution #algae #archaea #eukaryogenesis #microbes #microorganisms #eukaryotes #microbiology

#ISEPpapers 20: April, May, and June 2023 https://www.isep-protists.com/post/iseppapers-20

Your twentieth digest of papers and preprints published by members of the International Society for Evolutionary #Protistology is here!

#protists #protozoa #evolution #algae #archaea #eukaryogenesis #microbes #microorganisms #eukaryotes #microbiology

#ISEPpapers 20: April, May, and June 2023 https://www.isep-protists.com/post/iseppapers-20

Your twentieth digest of papers and preprints published by members of the International Society for Evolutionary #Protistology is here!

#protists #protozoa #evolution #algae #archaea #eukaryogenesis #microbes #microorganisms #eukaryotes #microbiology

New clues about origin of complex life trace roots to common ancestor https://phys.org/news/2023-06-clues-complex-life-roots-common.html #archaea #protists #eukaryogenesis

Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes: Laura Eme et al. https://www.nature.com/articles/s41586-023-06186-2

"the ancestor of all modern Asgards appears to have been living in hot environments, consuming CO2 and chemicals to live. Meanwhile, Hods (more closely related to eukaryotes) are metabolically more similar to us."

New clues about origin of complex life trace roots to common ancestor https://phys.org/news/2023-06-clues-complex-life-roots-common.html #archaea #protists #eukaryogenesis

Inference and reconstruction of the heimdallarchaeial ancestry of eukaryotes: Laura Eme et al. https://www.nature.com/articles/s41586-023-06186-2

"the ancestor of all modern Asgards appears to have been living in hot environments, consuming CO2 and chemicals to live. Meanwhile, Hods (more closely related to eukaryotes) are metabolically more similar to us."

A lost world of early #microbes thrived one billion years ago https://www.nature.com/articles/d41586-023-01847-8 #protists #eukaryogenesis

Lost world of complex life and the late rise of the eukaryotic crown https://www.nature.com/articles/s41586-023-06170-w

"The team combed rocks from around the world and found widespread traces of these #protosterols — evidence that the #eukaryotes that produced them were abundant in water environments between 800 million and 1.6 billion years ago."

A lost world of early #microbes thrived one billion years ago https://www.nature.com/articles/d41586-023-01847-8 #protists #eukaryogenesis

Lost world of complex life and the late rise of the eukaryotic crown https://www.nature.com/articles/s41586-023-06170-w

"The team combed rocks from around the world and found widespread traces of these #protosterols — evidence that the #eukaryotes that produced them were abundant in water environments between 800 million and 1.6 billion years ago."

Eukaryogenesis: Questions in Questions in Questions

by Janie
For a very long time, symbiogenesis was scoffed at as a fringe science. This mindset plagued the field from the get-go in the 1880s, when "Mitochondria Man" Ivan Wallin first put forth the idea that eukaryotic organelles might be bacterial, to the turn of the century, which saw the first key paper on symbiogenesis...

Read more → https://schaechter.asmblog.org/schaechter/2023/05/eukaryogenesis-questions-in-questions-in-questions.html

#microbiology #Eukaryogenesis

Eukaryogenesis: Questions in Questions in Questions

by Janie
For a very long time, symbiogenesis was scoffed at as a fringe science. This mindset plagued the field from the get-go in the 1880s, when "Mitochondria Man" Ivan Wallin first put forth the idea that eukaryotic organelles might be bacterial, to the turn of the century, which saw the first key paper on symbiogenesis...

Read more → https://schaechter.asmblog.org/schaechter/2023/05/eukaryogenesis-questions-in-questions-in-questions.html

#microbiology #Eukaryogenesis

Shedding light On The Origin Of Complex Life Forms https://astrobiology.com/2022/12/shedding-light-on-the-origin-of-complex-life-forms.html #protists #archaea #eukaryogenesis

#Actin cytoskeleton and complex cell architecture in an Asgard archaeon https://www.nature.com/articles/s41586-022-05550-y

A complex actin-based #cytoskeleton predated the emergence of the first #eukaryotes and was a crucial feature in the evolution of the #AsgardArchaea phylum by scaffolding elaborate cellular structures.

A Cristae-Like Microcompartment in Desulfobacterota https://journals.asm.org/doi/10.1128/mbio.01613-22 #Microbes #Bacteria #CellBiology #ConvergentEvolution #Eukaryogenesis

"their intracytoplasmic membranes appear remarkably similar to lamellar cristae... They are structurally nearly identical to the crista junction architecture seen in metazoan #mitochondria. However, the core junction-forming proteins must be different."