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Cyanobacteria evolution: Insight from the fossil record
Cyanobacteria played an important role in the evolution of Early Earth and the biosphere. They are responsible for the oxygenation of the atmosphere and oceans since the Great Oxidation Event around 2.4 Ga, debatably earlier. They are also major primary producers in past and present oceans, and the...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier Science
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6880289/ https://www.ncbi.nlm.nih.gov/pubmed/31078731 http://dx.doi.org/10.1016/j.freeradbiomed.2019.05.007 |
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author | Demoulin, Catherine F. Lara, Yannick J. Cornet, Luc François, Camille Baurain, Denis Wilmotte, Annick Javaux, Emmanuelle J. |
author_facet | Demoulin, Catherine F. Lara, Yannick J. Cornet, Luc François, Camille Baurain, Denis Wilmotte, Annick Javaux, Emmanuelle J. |
author_sort | Demoulin, Catherine F. |
collection | PubMed |
description | Cyanobacteria played an important role in the evolution of Early Earth and the biosphere. They are responsible for the oxygenation of the atmosphere and oceans since the Great Oxidation Event around 2.4 Ga, debatably earlier. They are also major primary producers in past and present oceans, and the ancestors of the chloroplast. Nevertheless, the identification of cyanobacteria in the early fossil record remains ambiguous because the morphological criteria commonly used are not always reliable for microfossil interpretation. Recently, new biosignatures specific to cyanobacteria were proposed. Here, we review the classic and new cyanobacterial biosignatures. We also assess the reliability of the previously described cyanobacteria fossil record and the challenges of molecular approaches on modern cyanobacteria. Finally, we suggest possible new calibration points for molecular clocks, and strategies to improve our understanding of the timing and pattern of the evolution of cyanobacteria and oxygenic photosynthesis. |
format | Online Article Text |
id | pubmed-6880289 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Elsevier Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-68802892019-11-29 Cyanobacteria evolution: Insight from the fossil record Demoulin, Catherine F. Lara, Yannick J. Cornet, Luc François, Camille Baurain, Denis Wilmotte, Annick Javaux, Emmanuelle J. Free Radic Biol Med Article Cyanobacteria played an important role in the evolution of Early Earth and the biosphere. They are responsible for the oxygenation of the atmosphere and oceans since the Great Oxidation Event around 2.4 Ga, debatably earlier. They are also major primary producers in past and present oceans, and the ancestors of the chloroplast. Nevertheless, the identification of cyanobacteria in the early fossil record remains ambiguous because the morphological criteria commonly used are not always reliable for microfossil interpretation. Recently, new biosignatures specific to cyanobacteria were proposed. Here, we review the classic and new cyanobacterial biosignatures. We also assess the reliability of the previously described cyanobacteria fossil record and the challenges of molecular approaches on modern cyanobacteria. Finally, we suggest possible new calibration points for molecular clocks, and strategies to improve our understanding of the timing and pattern of the evolution of cyanobacteria and oxygenic photosynthesis. Elsevier Science 2019-08-20 /pmc/articles/PMC6880289/ /pubmed/31078731 http://dx.doi.org/10.1016/j.freeradbiomed.2019.05.007 Text en © 2019 The Authors http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Article Demoulin, Catherine F. Lara, Yannick J. Cornet, Luc François, Camille Baurain, Denis Wilmotte, Annick Javaux, Emmanuelle J. Cyanobacteria evolution: Insight from the fossil record |
title | Cyanobacteria evolution: Insight from the fossil record |
title_full | Cyanobacteria evolution: Insight from the fossil record |
title_fullStr | Cyanobacteria evolution: Insight from the fossil record |
title_full_unstemmed | Cyanobacteria evolution: Insight from the fossil record |
title_short | Cyanobacteria evolution: Insight from the fossil record |
title_sort | cyanobacteria evolution: insight from the fossil record |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6880289/ https://www.ncbi.nlm.nih.gov/pubmed/31078731 http://dx.doi.org/10.1016/j.freeradbiomed.2019.05.007 |
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