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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
González-Pech RA,Ragan MA,Chan CXdoi
10.1038/s41598-017-15029-wsubject
Has Abstractpub_date
2017-11-03 00:00:00pages
15021issue
1issn
2045-2322pii
10.1038/s41598-017-15029-wjournal_volume
7pub_type
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