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Evidence for a role of viruses in the thermal sensitivity of coral photosymbionts
- Publication Year :
- 2016
-
Abstract
- © 2017 International Society for Microbial Ecology All rights reserved 1751-7362/17. Symbiodinium, the dinoflagellate photosymbiont of corals, is posited to become more susceptible to viral infections when heat-stressed. To investigate this hypothesis, we mined transcriptome data of a thermosensitive and a thermotolerant type C1 Symbiodinium population at ambient (27 °C) and elevated (32°C) temperatures. We uncovered hundreds of transcripts from nucleocytoplasmic large double-stranded DNA viruses (NCLDVs) and the genome of a novel positive-sense single-stranded RNA virus (+ssRNAV). In the transcriptome of the thermosensitive population only, +ssRNAV transcripts had remarkable expression levels in the top 0.03% of all transcripts at 27 °C, but at 32 °C, expression levels of +ssRNAV transcripts decreased, while expression levels of anti-viral transcripts increased. In both transcriptomes, expression of NCLDV transcripts increased at 32 °C, but thermal induction of NCLDV transcripts involved in DNA manipulation was restricted to the thermosensitive population. Our findings reveal that viruses infecting Symbiodinium are affected by heat stress and may contribute to Symbiodinium thermal sensitivity.
- Subjects :
- 0301 basic medicine
Hot Temperature
Short Communication
Population
Genome, Viral
Genome
Microbiology
Transcriptome
03 medical and health sciences
Symbiodinium
chemistry.chemical_compound
Animals
RNA Viruses
Giant Virus
education
Symbiosis
Ecology, Evolution, Behavior and Systematics
education.field_of_study
biology
Coral Reefs
DNA Viruses
Temperature
RNA
RNA virus
biology.organism_classification
Anthozoa
030104 developmental biology
chemistry
Dinoflagellida
RNA, Viral
DNA
Subjects
Details
- ISSN :
- 17517362
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....ffacfc8c492b4891db14a9b468a3e278