Projects per year
Abstract
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 characterised the pattern and timescale of decay of nuclei, chloroplasts and pyrenoids in red and green algae, demonstrating that they persist for many weeks post-mortem as physical substrates available for preservation, a timescale consistent with the 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 fossilised organelles in Proterozoic fossils can no longer be dismissed on grounds of plausibility, prompting reinterpretation of the early eukaryote fossil record and the prospect of a fossil record of eukaryogenesis.
Original language | English |
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Article number | eabe9487 |
Number of pages | 8 |
Journal | Science Advances |
Volume | 7 |
Issue number | 5 |
DOIs | |
Publication status | Published - 27 Jan 2021 |
Bibliographical note
Funding Information:E.M.C. is funded by a University of Bristol PhD Studentship. J.A.C. and P.C.J.D. were funded by the Natural Environment Research Council (NE/J018325/1 and NE/P013678/1). P.C.J.D. is also funded by the Biotechnology and Biological Sciences Research Council (BB/N000919/1; BB/ T012773/1) and Simons-Moore Foundation.
Publisher Copyright:
Copyright © 2021 The Authors, some rights reserved.
Research Groups and Themes
- MSc Palaeobiology
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Dive into the research topics of 'Experimental taphonomy of organelles and the fossil record of early eukaryote evolution'. Together they form a unique fingerprint.Projects
- 2 Finished
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Neoproterozoic - Phanerozoic transition
Donoghue, P. C. J. (Principal Investigator)
9/01/17 → 31/07/22
Project: Research
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Improving Bayesian methods for estimating divergence times integrating genomic and trait data
Donoghue, P. C. J. (Principal Investigator)
25/03/16 → 31/12/21
Project: Research