Experimental taphonomy of organelles and the fossil record of early eukaryote evolution
| Autor: | Philip C. J. Donoghue, Vanisa Pankhania, Emily M. Carlisle, Melina Jobbins, John A. Cunningham |
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| Přispěvatelé: | University of Zurich, Carlisle, Emily M, Donoghue, Philip C J |
| Rok vydání: | 2021 |
| Předmět: |
Taphonomy
Too quickly 10125 Paleontological Institute and Museum 010502 geochemistry & geophysics 01 natural sciences Fossilization Pyrenoid 03 medical and health sciences stomatognathic system Organelle Research Articles 030304 developmental biology 0105 earth and related environmental sciences 1000 Multidisciplinary 0303 health sciences Multidisciplinary Fossil Record biology SciAdv r-articles Paleontology food and beverages social sciences biology.organism_classification Chloroplast 560 Fossils & prehistoric life Evolutionary biology MSc Palaeobiology Eukaryote Research Article |
| Zdroj: | Science Advances Carlisle, E M, Jobbins, M, Pankhania, V, Cunningham, J A & Donoghue, P C J 2021, ' Experimental taphonomy of organelles and the fossil record of early eukaryote evolution ', Science Advances, vol. 7, no. 5, eabe9487 . https://doi.org/10.1126/sciadv.abe9487 |
| ISSN: | 2375-2548 |
| Popis: | Taphonomy experiments reveal the potential for a fossil record of the origin of complex life. The timing of origin of eukaryotes and the sequence of eukaryogenesis are poorly constrained because their fossil record is difficult to interpret. Claims of fossilized organelles have been discounted on the unsubstantiated perception that they decay too quickly for fossilization. We experimentally characterized the pattern and time scale of decay of nuclei, chloroplasts, and pyrenoids in red and green algae, demonstrating that they persist for many weeks postmortem as physical substrates available for preservation, a time scale consistent with known mechanisms of fossilization. Chloroplasts exhibit greater decay resistance than nuclei; pyrenoids are unlikely to be preserved, but their presence could be inferred from spaces within fossil chloroplasts. Our results are compatible with differential organelle preservation in seed plants. Claims of fossilized organelles in Proterozoic fossils can no longer be dismissed on grounds of plausibility, prompting reinterpretation of the early eukaryotic fossil record and the prospect of a fossil record of eukaryogenesis. |
| Databáze: | OpenAIRE |
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