Cargando…
Dating Alphaproteobacteria evolution with eukaryotic fossils
Elucidating the timescale of the evolution of Alphaproteobacteria, one of the most prevalent microbial lineages in marine and terrestrial ecosystems, is key to testing hypotheses on their co-evolution with eukaryotic hosts and Earth’s systems, which, however, is largely limited by the scarcity of ba...
Autores principales: | , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8175736/ https://www.ncbi.nlm.nih.gov/pubmed/34083540 http://dx.doi.org/10.1038/s41467-021-23645-4 |
_version_ | 1783703107310452736 |
---|---|
author | Wang, Sishuo Luo, Haiwei |
author_facet | Wang, Sishuo Luo, Haiwei |
author_sort | Wang, Sishuo |
collection | PubMed |
description | Elucidating the timescale of the evolution of Alphaproteobacteria, one of the most prevalent microbial lineages in marine and terrestrial ecosystems, is key to testing hypotheses on their co-evolution with eukaryotic hosts and Earth’s systems, which, however, is largely limited by the scarcity of bacterial fossils. Here, we incorporate eukaryotic fossils to date the divergence times of Alphaproteobacteria, based on the mitochondrial endosymbiosis that mitochondria evolved from an alphaproteobacterial lineage. We estimate that Alphaproteobacteria arose ~1900 million years (Ma) ago, followed by rapid divergence of their major clades. We show that the origin of Rickettsiales, an order of obligate intracellular bacteria whose hosts are mostly animals, predates the emergence of animals for ~700 Ma but coincides with that of eukaryotes. This, together with reconstruction of ancestral hosts, strongly suggests that early Rickettsiales lineages had established previously underappreciated interactions with unicellular eukaryotes. Moreover, the mitochondria-based approach displays higher robustness to uncertainties in calibrations compared with the traditional strategy using cyanobacterial fossils. Further, our analyses imply the potential of dating the (bacterial) tree of life based on endosymbiosis events, and suggest that previous applications using divergence times of the modern hosts of symbiotic bacteria to date bacterial evolution might need to be revisited. |
format | Online Article Text |
id | pubmed-8175736 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-81757362021-06-07 Dating Alphaproteobacteria evolution with eukaryotic fossils Wang, Sishuo Luo, Haiwei Nat Commun Article Elucidating the timescale of the evolution of Alphaproteobacteria, one of the most prevalent microbial lineages in marine and terrestrial ecosystems, is key to testing hypotheses on their co-evolution with eukaryotic hosts and Earth’s systems, which, however, is largely limited by the scarcity of bacterial fossils. Here, we incorporate eukaryotic fossils to date the divergence times of Alphaproteobacteria, based on the mitochondrial endosymbiosis that mitochondria evolved from an alphaproteobacterial lineage. We estimate that Alphaproteobacteria arose ~1900 million years (Ma) ago, followed by rapid divergence of their major clades. We show that the origin of Rickettsiales, an order of obligate intracellular bacteria whose hosts are mostly animals, predates the emergence of animals for ~700 Ma but coincides with that of eukaryotes. This, together with reconstruction of ancestral hosts, strongly suggests that early Rickettsiales lineages had established previously underappreciated interactions with unicellular eukaryotes. Moreover, the mitochondria-based approach displays higher robustness to uncertainties in calibrations compared with the traditional strategy using cyanobacterial fossils. Further, our analyses imply the potential of dating the (bacterial) tree of life based on endosymbiosis events, and suggest that previous applications using divergence times of the modern hosts of symbiotic bacteria to date bacterial evolution might need to be revisited. Nature Publishing Group UK 2021-06-03 /pmc/articles/PMC8175736/ /pubmed/34083540 http://dx.doi.org/10.1038/s41467-021-23645-4 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Wang, Sishuo Luo, Haiwei Dating Alphaproteobacteria evolution with eukaryotic fossils |
title | Dating Alphaproteobacteria evolution with eukaryotic fossils |
title_full | Dating Alphaproteobacteria evolution with eukaryotic fossils |
title_fullStr | Dating Alphaproteobacteria evolution with eukaryotic fossils |
title_full_unstemmed | Dating Alphaproteobacteria evolution with eukaryotic fossils |
title_short | Dating Alphaproteobacteria evolution with eukaryotic fossils |
title_sort | dating alphaproteobacteria evolution with eukaryotic fossils |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8175736/ https://www.ncbi.nlm.nih.gov/pubmed/34083540 http://dx.doi.org/10.1038/s41467-021-23645-4 |
work_keys_str_mv | AT wangsishuo datingalphaproteobacteriaevolutionwitheukaryoticfossils AT luohaiwei datingalphaproteobacteriaevolutionwitheukaryoticfossils |