The dynamics of adaptive evolution in microalgae in a high-CO2 ocean
© 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation.
| Publié dans: | The New phytologist. - 1979. - (2024) vom: 29. Nov. |
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| Auteur principal: | |
| Autres auteurs: | , , , , , , , , |
| Format: | Article en ligne |
| Langue: | English |
| Publié: |
2024
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| Accès à la collection: | The New phytologist |
| Sujets: | Journal Article dynamic evolution global change high CO2 microalgae warming |
| Résumé: | © 2024 The Author(s). New Phytologist © 2024 New Phytologist Foundation. Marine microalgae demonstrate a notable capacity to adapt to high CO2 and warming in the context of global change. However, the dynamics of their evolutionary processes under simultaneous high CO₂ and warming conditions remain poorly understood. Here, we analyze the dynamics of evolution in experimental populations of a model marine diatom Phaeodactylum tricornutum. We conducted whole-genome resequencing of populations under ambient, high-CO2, warming and high CO2 + warming at 2-yr intervals over a 4-yr adaptation period. The common genes selected between 2- and 4-yr adaptation were found to be involved in protein ubiquitination and degradation and the tricarboxylic acid (TCA) cycle, and were consistently selected regardless of the experimental conditions or adaptation duration. The unique genes selected only by 4-yr adaptation function in respiration, fatty acid, and amino acid metabolism, facilitating adaptation to prolonged high CO2 with warming conditions. Corresponding changes at the metabolomic level, with significant alterations in metabolites abundances involved in these pathways, support the genomic findings. Our study, integrating genomic and metabolomic data, demonstrates that long-term adaptation of microalgae to high CO2 and/or warming can be characterized by a complex and dynamic genetic process and may advance our understanding of microalgae adaptation to global change |
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| Description: | Date Revised 29.11.2024 published: Print-Electronic Citation Status Publisher |
| ISSN: | 1469-8137 |
| DOI: | 10.1111/nph.20323 |