Whole-genome duplication in an algal symbiont bolsters coral heat tolerance.

Dougan, KE; Bellantuono, AJ; Kahlke, T; Abbriano, RM; Chen, Y; Shah, S; Granados-Cifuentes, C; van Oppen, MJH; Bhattacharya, D; Suggett, DJ; Rodriguez-Lanetty, M; Chan, CX

Whole-genome duplication in an algal symbiont bolsters coral heat tolerance.

Dougan, KE Bellantuono, AJ Kahlke, T Abbriano, RM Chen, Y Shah, S Granados-Cifuentes, C van Oppen, MJH Bhattacharya, D Suggett, DJ Rodriguez-Lanetty, M Chan, CX

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Publisher:: American Association for the Advancement of Science (AAAS)
Publication Type:: Journal Article
Citation:: Sci Adv, 2024, 10, (29), pp. eadn2218
Issue Date:: 2024-07-19

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Field	Value	Language
dc.contributor.author	Dougan, KE
dc.contributor.author	Bellantuono, AJ
dc.contributor.author	Kahlke, T
dc.contributor.author	Abbriano, RM
dc.contributor.author	Chen, Y
dc.contributor.author	Shah, S
dc.contributor.author	Granados-Cifuentes, C
dc.contributor.author	van Oppen, MJH
dc.contributor.author	Bhattacharya, D
dc.contributor.author	Suggett, DJ
dc.contributor.author	Rodriguez-Lanetty, M
dc.contributor.author	Chan, CX
dc.date.accessioned	2024-08-06T03:52:52Z
dc.date.available	2024-08-06T03:52:52Z
dc.date.issued	2024-07-19
dc.identifier.citation	Sci Adv, 2024, 10, (29), pp. eadn2218
dc.identifier.issn	2375-2548
dc.identifier.issn	2375-2548
dc.identifier.uri	http://hdl.handle.net/10453/180172
dc.description.abstract	The algal endosymbiont Durusdinium trenchii enhances the resilience of coral reefs under thermal stress. D. trenchii can live freely or in endosymbiosis, and the analysis of genetic markers suggests that this species has undergone whole-genome duplication (WGD). However, the evolutionary mechanisms that underpin the thermotolerance of this species are largely unknown. Here, we present genome assemblies for two D. trenchii isolates, confirm WGD in these taxa, and examine how selection has shaped the duplicated genome regions using gene expression data. We assess how the free-living versus endosymbiotic lifestyles have contributed to the retention and divergence of duplicated genes, and how these processes have enhanced the thermotolerance of D. trenchii. Our combined results suggest that lifestyle is the driver of post-WGD evolution in D. trenchii, with the free-living phase being the most important, followed by endosymbiosis. Adaptations to both lifestyles likely enabled D. trenchii to provide enhanced thermal stress protection to the host coral.
dc.format	Print-Electronic
dc.language	eng
dc.publisher	American Association for the Advancement of Science (AAAS)
dc.relation.ispartof	Sci Adv
dc.relation.isbasedon	10.1126/sciadv.adn2218
dc.rights	info:eu-repo/semantics/openAccess
dc.subject.mesh	Symbiosis
dc.subject.mesh	Anthozoa
dc.subject.mesh	Animals
dc.subject.mesh	Gene Duplication
dc.subject.mesh	Thermotolerance
dc.subject.mesh	Genome
dc.subject.mesh	Coral Reefs
dc.subject.mesh	Phylogeny
dc.subject.mesh	Animals
dc.subject.mesh	Anthozoa
dc.subject.mesh	Phylogeny
dc.subject.mesh	Symbiosis
dc.subject.mesh	Gene Duplication
dc.subject.mesh	Genome
dc.subject.mesh	Coral Reefs
dc.subject.mesh	Thermotolerance
dc.subject.mesh	Symbiosis
dc.subject.mesh	Anthozoa
dc.subject.mesh	Animals
dc.subject.mesh	Gene Duplication
dc.subject.mesh	Thermotolerance
dc.subject.mesh	Genome
dc.subject.mesh	Coral Reefs
dc.subject.mesh	Phylogeny
dc.title	Whole-genome duplication in an algal symbiont bolsters coral heat tolerance.
dc.type	Journal Article
utslib.citation.volume	10
utslib.location.activity	United States
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Science
utslib.copyright.status	open_access	*
dc.rights.license	This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0). To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/
dc.date.updated	2024-08-06T03:52:43Z
pubs.issue	29
pubs.publication-status	Published
pubs.volume	10
utslib.citation.issue	29

Abstract:

The algal endosymbiont Durusdinium trenchii enhances the resilience of coral reefs under thermal stress. D. trenchii can live freely or in endosymbiosis, and the analysis of genetic markers suggests that this species has undergone whole-genome duplication (WGD). However, the evolutionary mechanisms that underpin the thermotolerance of this species are largely unknown. Here, we present genome assemblies for two D. trenchii isolates, confirm WGD in these taxa, and examine how selection has shaped the duplicated genome regions using gene expression data. We assess how the free-living versus endosymbiotic lifestyles have contributed to the retention and divergence of duplicated genes, and how these processes have enhanced the thermotolerance of D. trenchii. Our combined results suggest that lifestyle is the driver of post-WGD evolution in D. trenchii, with the free-living phase being the most important, followed by endosymbiosis. Adaptations to both lifestyles likely enabled D. trenchii to provide enhanced thermal stress protection to the host coral.

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http://hdl.handle.net/10453/180172