The symbiotic origin of the eukaryotic cell
Eukaryogenesis represented a major evolutionary transition that led to the emergence of complex cells from simpler ancestors. For several decades, the most accepted scenario involved the evolution of an independent lineage of proto-eukaryotes endowed with an endomembrane system, including a nuclear...
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Académie des sciences
2023-05-01
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| Series: | Comptes Rendus Biologies |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/biologies/articles/10.5802/crbiol.118/ |
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| author | López-García, Purificación Moreira, David |
| author_facet | López-García, Purificación Moreira, David |
| author_sort | López-García, Purificación |
| collection | DOAJ |
| description | Eukaryogenesis represented a major evolutionary transition that led to the emergence of complex cells from simpler ancestors. For several decades, the most accepted scenario involved the evolution of an independent lineage of proto-eukaryotes endowed with an endomembrane system, including a nuclear compartment, a developed cytoskeleton and phagocytosis, which engulfed the alphaproteobacterial ancestor of mitochondria. However, the recent discovery by metagenomic and cultural approaches of Asgard archaea, which harbour many genes in common with eukaryotes and are their closest relatives in phylogenomic trees, rather supports scenarios based on the symbiosis of one Asgard-like archaeon and one or more bacteria at the origin of the eukaryotic cell. Here, we review the recent discoveries that led to this conceptual shift, briefly evoking current models of eukaryogenesis and the challenges ahead to discriminate between them and to establish a detailed, plausible scenario that accounts for the evolution of eukaryotic traits from those of their prokaryotic ancestors. |
| format | Article |
| id | doaj-art-4362587ea3d742c8abd4a223edd2fd87 |
| institution | Kabale University |
| issn | 1768-3238 |
| language | English |
| publishDate | 2023-05-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus Biologies |
| spelling | doaj-art-4362587ea3d742c8abd4a223edd2fd872025-02-07T10:36:22ZengAcadémie des sciencesComptes Rendus Biologies1768-32382023-05-01346G1557410.5802/crbiol.11810.5802/crbiol.118The symbiotic origin of the eukaryotic cellLópez-García, Purificación0https://orcid.org/0000-0002-0927-0651Moreira, David1https://orcid.org/0000-0002-2064-5354Ecologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, FranceEcologie Systématique Evolution, CNRS, Université Paris-Saclay, AgroParisTech, Gif-sur-Yvette, FranceEukaryogenesis represented a major evolutionary transition that led to the emergence of complex cells from simpler ancestors. For several decades, the most accepted scenario involved the evolution of an independent lineage of proto-eukaryotes endowed with an endomembrane system, including a nuclear compartment, a developed cytoskeleton and phagocytosis, which engulfed the alphaproteobacterial ancestor of mitochondria. However, the recent discovery by metagenomic and cultural approaches of Asgard archaea, which harbour many genes in common with eukaryotes and are their closest relatives in phylogenomic trees, rather supports scenarios based on the symbiosis of one Asgard-like archaeon and one or more bacteria at the origin of the eukaryotic cell. Here, we review the recent discoveries that led to this conceptual shift, briefly evoking current models of eukaryogenesis and the challenges ahead to discriminate between them and to establish a detailed, plausible scenario that accounts for the evolution of eukaryotic traits from those of their prokaryotic ancestors.https://comptes-rendus.academie-sciences.fr/biologies/articles/10.5802/crbiol.118/EukaryogenesisSymbiogenesisSymbiosisSyntrophyMitochondriaNucleusAsgard archaea |
| spellingShingle | López-García, Purificación Moreira, David The symbiotic origin of the eukaryotic cell Comptes Rendus Biologies Eukaryogenesis Symbiogenesis Symbiosis Syntrophy Mitochondria Nucleus Asgard archaea |
| title | The symbiotic origin of the eukaryotic cell |
| title_full | The symbiotic origin of the eukaryotic cell |
| title_fullStr | The symbiotic origin of the eukaryotic cell |
| title_full_unstemmed | The symbiotic origin of the eukaryotic cell |
| title_short | The symbiotic origin of the eukaryotic cell |
| title_sort | symbiotic origin of the eukaryotic cell |
| topic | Eukaryogenesis Symbiogenesis Symbiosis Syntrophy Mitochondria Nucleus Asgard archaea |
| url | https://comptes-rendus.academie-sciences.fr/biologies/articles/10.5802/crbiol.118/ |
| work_keys_str_mv | AT lopezgarciapurificacion thesymbioticoriginoftheeukaryoticcell AT moreiradavid thesymbioticoriginoftheeukaryoticcell AT lopezgarciapurificacion symbioticoriginoftheeukaryoticcell AT moreiradavid symbioticoriginoftheeukaryoticcell |