Signatures of adaptation and symbiosis in genomes and transcriptomes of Symbiodinium

Scientific Reports
Raúl A González-PechCheong Xin Chan

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...Continue Reading

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Citations

Aug 28, 2019·Microorganisms·Yali BiWeiwen Zhang
Nov 7, 2019·Global Change Biology·Homère J Alves MonteiroJérémy Le Luyer
Jul 6, 2020·Database : the Journal of Biological Databases and Curation·Liying YuSenjie Lin
Nov 5, 2020·Genome Biology and Evolution·Eiichi ShoguchiChuya Shinzato
Aug 14, 2018·Current Biology : CB·Todd C LaJeunesseScott R Santos

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Methods Mentioned

BETA
GTPase
GTPases
protein folding
chips

Software Mentioned

TrEMBL
R
BUSCO
BLASTn
TransDecoder
BLASTx
PfamScan
BLASTp
SuesCore
EMBOSS

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