Recent expansion of heat-activated retrotransposons in the coral symbiont Symbiodinium microadriaticum
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Type
ArticleKAUST Department
Biological and Environmental Sciences and Engineering (BESE) DivisionMarine Science Program
Red Sea Research Center (RSRC)
KAUST Grant Number
URF/1/1705-01Date
2017-10-20Online Publication Date
2017-10-20Print Publication Date
2018-02Permanent link to this record
http://hdl.handle.net/10754/625918
Metadata
Show full item recordAbstract
Rising sea surface temperature is the main cause of global coral reef decline. Abnormally high temperatures trigger the breakdown of the symbiotic association between corals and their photosynthetic symbionts in the genus Symbiodinium. Higher genetic variation resulting from shorter generation times has previously been proposed to provide increased adaptability to Symbiodinium compared to the host. Retrotransposition is a significant source of genetic variation in eukaryotes and some transposable elements are specifically expressed under adverse environmental conditions. We present transcriptomic and phylogenetic evidence for the existence of heat stress-activated Ty1-copia-type LTR retrotransposons in the coral symbiont Symbiodinium microadriaticum. Genome-wide analyses of emergence patterns of these elements further indicate recent expansion events in the genome of S. microadriaticum. Our findings suggest that acute temperature increases can activate specific retrotransposons in the Symbiodinium genome with potential impacts on the rate of retrotransposition and the generation of genetic variation under heat stress.The ISME Journal advance online publication, 20 October 2017; doi:10.1038/ismej.2017.179.Citation
Chen JE, Cui G, Wang X, Liew YJ, Aranda M (2017) Recent expansion of heat-activated retrotransposons in the coral symbiont Symbiodinium microadriaticum. The ISME Journal. Available: http://dx.doi.org/10.1038/ismej.2017.179.Sponsors
This publication is based on the work supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) under Award No. URF/1/1705-01.Publisher
Springer NatureJournal
The ISME JournalPubMed ID
29053149ae974a485f413a2113503eed53cd6c53
10.1038/ismej.2017.179
Scopus Count
Except where otherwise noted, this item's license is described as This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/.
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