File:41559 2024 2461 Fig3b.jpg

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A reconstruction of LUCA, within its evolutionary and ecological context

Summary

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Description
English: LUCA in the context of the tree of life. Branches on the tree of life that have left sampled descendants today are coloured black, those that have left no sampled descendants are in grey. As the common ancestor of extant cellular life, LUCA is the oldest node that can be reconstructed using phylogenetic methods. It would have shared the early Earth with other lineages (highlighted in teal) that have left no descendants among sampled cellular life today. However, these lineages may have left a trace in modern organisms by transferring genes into the sampled tree of life (red lines) before their extinction (HGT, possibly with viruses as vectors).
Deutsch: LUCA im Kontext des Stammbaums der zellulären Organismen. Zweige des Stammbaums, die heute Nachkommen hinterlassen haben, sind schwarz gefärbt, solche, die keine Nachkommen hinterlassen haben, dagegen grau. Als gemeinsamer Vorfahre des heutigen zellulären Lebens ist LUCA der älteste Knoten, der mit phylogenetischen Methoden aus rezenten Organismen rekonstruiert werden kann. Er hat anzunehmenderweise die frühe Erde mit anderen Linien (in Türkis hervorgehoben) geteilt, die keine Nachkommen unter heute bekannten zellulären Lebewesen hinterlassen haben. Diese Linien könnten jedoch eine genetische Spur in rezenten Organismen hinterlassen haben, indem sie vor ihrem Aussterben Gene in den Stammbaum der heute bekannten Organismen (rote Linien) übertragen haben (Horizontaler Gentransfer, etwa durch Viren). Contemporaries = Zeitgenossen.
Date
Source The nature of the last universal common ancestor and its impact on the early Earth system. In: Nature Ecology & Evolution, doi:10.1038/s41559-024-02461-1
Author Edmund R. R. Moody, Sandra Álvarez-Carretero, Tara A. Mahendrarajah, James W. Clark, Holly C. Betts, Nina Dombrowski, Lénárd L. Szánthó, Richard A. Boyle, Stuart Daines, Xi Chen, Nick Lane, Ziheng Yang, Graham A. Shields, Gergely J. Szöllősi, Anja Spang, Davide Pisani, Tom A. Williams, Timothy M. Lenton & Philip C. J. Donoghue
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Date/TimeThumbnailDimensionsUserComment
current09:16, 13 July 2024Thumbnail for version as of 09:16, 13 July 2024926 × 560 (87 KB)Ernsts (talk | contribs)Uploaded a work by Edmund R. R. Moody, Sandra Álvarez-Carretero, Tara A. Mahendrarajah, James W. Clark, Holly C. Betts, Nina Dombrowski, Lénárd L. Szánthó, Richard A. Boyle, Stuart Daines, Xi Chen, Nick Lane, Ziheng Yang, Graham A. Shields, Gergely J. Szöllősi, Anja Spang, Davide Pisani, Tom A. Williams, Timothy M. Lenton & Philip C. J. Donoghue from ''The nature of the last universal common ancestor and its impact on the early Earth system.'' In: ''Nature Ecology & Evolution'', [[d...

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