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2023-07-22

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cc-by (c) Leiva, Carlos et al., 2023
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/201986

Genomic signatures suggesting adaptation to ocean acidification in a coral holobiont from volcanic CO2 seeps

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https://doi.org/10.1038/s42003-023-05103-7

Abstract

Ocean acidification, caused by anthropogenic CO 2 emissions, is predicted to have major consequences for reef-building corals, jeopardizing the scaffolding of the most biodiverse marine habitats. However, whether corals can adapt to ocean acidification and how remains unclear. We addressed these questions by re-examining transcriptome and genome data of Acropora millepora coral holobionts from volcanic CO2 seeps with end-of-century pH levels. We show that adaptation to ocean acidification is a wholistic process involving the three main compartments of the coral holobiont. We identified 441 coral host candidate adaptive genes involved in calcification, response to acidification, and symbiosis; population genetic differentiation in dinoflagellate photosymbionts; and consistent transcriptional microbiome activity despite microbial community shifts. Coral holobionts from natural analogues to future ocean conditions harbor beneficial genetic variants with far-reaching rapid adaptation potential. In the face of climate change, these populations require immediate conservation strategies as they could become key to coral reef survival.

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Captura i emmagatzematge de diòxid de carboni, Coralls, Oceans, Canvi climàtic

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Carbon sequestration, Corals, Oceans, Climatic change

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Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

Citation

LEIVA, Carlos, PÉREZ PORTELA, Rocío and LEMER, Sarah. Genomic signatures suggesting adaptation to ocean acidification in a coral holobiont from volcanic CO2 seeps. Communications Biology. 2023. Vol. 6, num. 769. ISSN 2399-3642. [consulted: 11 of August of 2026]. Available at: https://hdl.handle.net/2445/201986

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