Signatures of adaptation and symbiosis in genomes and transcriptomes of Symbiodinium

González-Pech, Raúl A., Ragan, Mark A. and Chan, Cheong Xin (2017) Signatures of adaptation and symbiosis in genomes and transcriptomes of Symbiodinium. Scientific reports, 7 1: 15021. doi:10.1038/s41598-017-15029-w

Author González-Pech, Raúl A.
Ragan, Mark A.
Chan, Cheong Xin
Title Signatures of adaptation and symbiosis in genomes and transcriptomes of Symbiodinium
Journal name Scientific reports   Check publisher's open access policy
ISSN 2045-2322
Publication date 2017-11-03
Year available 2017
Sub-type Article (original research)
DOI 10.1038/s41598-017-15029-w
Open Access Status DOI
Volume 7
Issue 1
Start page 15021
Total pages 10
Place of publication LONDON
Publisher Nature Publishing Group
Language eng
Subject 1000 General
Abstract Symbiodinium is best-known as the photosynthetic symbiont of corals, but some clades are symbiotic in other organisms or include free-living forms. Identifying similarities and differences among these clades can help us understand their relationship with corals, and thereby inform on measures to manage coral reefs in a changing environment. Here, using sequences from 24 publicly available transcriptomes and genomes of Symbiodinium, we assessed 78,389 gene families in Symbiodinium clades and the immediate outgroup Polarella glacialis, and identified putative overrepresented functions in gene families that (1) distinguish Symbiodinium from other members of Order Suessiales, (2) are shared by all of the Symbiodinium clades for which we have data, and (3) based on available information, are specific to each clade. Our findings indicate that transmembrane transport, mechanisms of response to reactive oxygen species, and protection against UV radiation are functions enriched in all Symbiodinium clades but not in P. glacialis. Enrichment of these functions indicates the capability of Symbiodinium to establish and maintain symbiosis, and to respond and adapt to its environment. The observed differences in lineage-specific gene families imply extensive genetic divergence among clades. Our results provide a platform for future investigation of lineage- or clade-specific adaptation of Symbiodinium to their environment.
Keyword Coral-Algal Symbiosis
Evolutionary History
Protein Families
Q-Index Code C1
Q-Index Status Provisional Code
Grant ID DP150101875
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Pubmed Import
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Created: Wed, 08 Nov 2017, 12:01:12 EST