Giant, #Ancient Life Form Doesn’t Fit Into Any Known Branch of Life
Scientists have debated where #Prototaxites belong in tree of life for over a century, but now a new study suggests it might represent a whole new branch.
Researchers analyzed #fossil of Prototaxites species called Prototaxites taiti and concluded that it belonged to now-extinct lineage of multicellular #terrestrial #eukaryotes (organisms, including all animals and plants, whose cells contain a nucleus).
https://gizmodo.com/giant-ancient-life-form-doesnt-fit-into-any-known-branch-of-life-2000582118
#Eukaryotes
EukFunc: A Holistic Eukaryotic Functional Reference for Automated Profiling of Soil Eukaryotes
https://onlinelibrary.wiley.com/doi/abs/10.1111/1755-0998.14118
#soil #eukaryotes #function #Rstats #fungi #nematodes #protists
New #ISEPpaper! On the possibility of yet a third #kinetochore system in the protist phylum Euglenozoa https://journals.asm.org/doi/full/10.1128/mbio.02936-24 by Corinna Benz et al.
"While #kinetoplastids have an unconventional kinetochore system and #euglenids have a canonical one similar to traditional model #eukaryotes, preliminary searches detected neither unconventional nor canonical kinetochore components in #diplonemids."
Eukaryotic cell emerged as evolutionary algorithmic phase transition
https://www.sciencedaily.com/releases/2025/04/250421163507.htm
https://press.uni-mainz.de/eukaryotic-cell-emerged-as-evolutionary-algorithmic-phase-transition/
https://www.pnas.org/doi/10.1073/pnas.2422968122
* compromise: conserved process of gene growth vs. change in genetic regulation which incorporated noncoding sequences
* increase in cellular complexity occurred continuously
* in abrupt manner at critical point unlocked path toward multicellular organisms
The origin of the eukaryotic cell corresponded to the most significant increase in #complexity in the history of #life's evolution on Earth.
The billions of years that have passed since the fusion of an #archaea and a #bacteria have resulted in a lack of evolutionary intermediates in the phylogenetic tree until the emergence of the #eukaryotes.
Now researchers present theoretical and observational evidence that a phase transition in genetic complexity was involved.
https://phys.org/news/2025-04-evolutionary-algorithmic-phase-transition-billion.html
The emergence of #eukaryotes as an evolutionary algorithmic phase transition: https://www.pnas.org/doi/10.1073/pnas.2422968122 -> Forscher der Johannes Gutenberg-Universität Mainz und drei weiterer Universitäten fanden heraus, warum Eukaryoten entstanden sind: https://idw-online.de/de/news850869
Prototaxites represents the first giant organisms to live on the terrestrial surface, reaching sizes of 8 metres in the Early Devonian.
It was an extinct lineage of #multicellular terrestrial #eukaryotes.
Assignments to groups of multicellular algae or land plants have been repeatedly ruled out leaving two major alternatives: #Prototaxites was either a #fungus or a now entirely extinct lineage.
The latter hypothesis seems more plausible based on nrw evidence.
Rapid folding of nascent RNA regulates eukaryotic RNA biogenesis.
#RNA #Folding #rRNA #mRNA #U2snRNA #CotranscriptionalStructureTracking #Eukaryotes #Yeast
https://www.sciencedirect.com/science/article/pii/S109727652500187X?dgcid=author
Pipeline release! nf-core/metatdenovo v1.1.1 - nf-core/metatdenovo 1.1.1!
Please see the changelog: https://github.com/nf-core/metatdenovo/releases/tag/1.1.1
#eukaryotes #metagenomics #metatranscriptomics #prokaryotes #viruses #nfcore #openscience #nextflow #bioinformatics
Microscopic Melodies: The Hidden Symphony of Sound and Microbial Life
#MicrobialLife #Psychoacoustics #Bioacoustics #Holobionts #MicrobialManagement #Eukaryotes #Cymatics #QuantumAntennae #Rebiosis #SoundScience #NatureSymphony #Microbiology #GutHealth #ScienceIsFun #HiddenWonders
Fungi are eukaryotes, meaning their cells have a defined nucleus containing their genetic material. Unlike prokaryotes (such as bacteria), fungi also have other membrane-bound organelles like mitochondria and endoplasmic reticulum. This makes them more complex than prokaryotes at the cellular level. Fungi include organisms like mushrooms, yeasts, and molds, which play essential roles in ecosystems as decomposers. 🍄 #Fungi #Eukaryotes #Science #Biology https://fungiape.com/is-fungi-prokaryote-or-eukaryote/
Pipeline release! nf-core/metatdenovo v1.1.0 - Nf-core/metatdenovo 1.1.0!
Please see the changelog: https://github.com/nf-core/metatdenovo/releases/tag/1.1.0
#eukaryotes #metagenomics #metatranscriptomics #prokaryotes #viruses #nfcore #openscience #nextflow #bioinformatics
#biology #eukaryotes #choanoflagellates #Salpingoeca #SalpingoecaRosetta
An article published in the journal "Science Advances" reports the results of a study on microbes of the species Salpingoeca rosetta that offers evidence that individuals exchange electrical signals they use to coordinate their behaviors. Jeffrey Colgren and Pawel Burkhardt used a newly developed genetic tool to examine the behaviors of colonies of these choanoflagellates (Choanoflagellata).
I already knew about #mitochondria, their maternal inheritance and of course their evolutionary roots. That we are on cell-level actually part #bacteria. But watching this, I'm wondering if we as #humans (and almost all #eukaryotes) are not just very complicated vehicles for the survival of these bacteria. 😱
Anton Petrov: *Are We Actually Controlled by Mitochondria? Mindblowing New Discoveries*
https://www.youtube.com/watch?v=vzqXeAtDnTA
Sources:
- https://www.science.org/doi/10.1126/sciadv.adp8351
- https://www.nature.com/articles/s41588-023-01505-9
- https://www.sciencedirect.com/science/article/abs/pii/S014976341931125X
- https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3002723
Reconstructing the last common ancestor of all eukaryotes.
https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3002917
Understanding #LECA... Guidelines to identify the gene repertoire of the Last Eukaryotic Common Ancestor, crucial for evaluating alternative hypotheses about the origin of #eukaryotes @eme_laura @andrewjroger @evocellbio +many #PLOSBiology https://plos.io/4g0alq4
Meet #Eukaryotes, the First Cells to Get Organized…
https://www.quantamagazine.org/meet-the-eukaryote-the-first-cell-to-get-organized-20241028/
"How this all happened isn’t entirely clear, but today, most experts agree that 2 billion or 3 billion years ago, an archaean cell engulfed a bacterial cell, which somehow escaped digestion and adapted to life inside its host. That bacterium evolved to become the organelle we now know as the mitochondrion."
Meet the Eukaryote, the First Cell to Get Organized | Quanta Magazine…
All modern multicellular life — all life that any of us regularly see — is made of cells with a knack for compartmentalization. Recent discoveries are revealing how the first eukaryote got its start... Quanta #eukaryotes #cellbiology #biology #science #evolutionarybiology #bacteria
#KnowledgeByte: #Mitochondria are organelles found in the cells of most #Eukaryotes, such as animals, plants, and fungi.
Do you know why is it called the "Powerhouse of the cell" ?
The emerging view on the origin and early evolution of eukaryotic cells
#eukaryotes #archaea #bacteria #complexity #science
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