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PySymPseu

ABSTRACT: Symbiodinium pseudominutum

PROVIDER: PRJEB87727 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	pySymPseu1.Gammaproteobacteria_1.1.primary.fa.gz	Other
	pySymPseu1.metagenome.1.primary.fa.gz	Other
	pySymPseu1.Rhodococcus_qingshengii_1.1.primary.fa.gz	Other
	ERR14835554.fastq.gz	Fastqsanger.gz

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pySymPseu1.metagenome

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The host transcriptome remains unaltered during the establishment of coral-algal symbioses

Project description:Coral reefs are based on the symbiotic relationship between corals and photosynthetic dinoflagellates of the genus Symbiodinium. We followed gene expression of coral larvae of Acropora palmata and Montastraea faveolata after exposure to Symbiodinium strains that differed in their ability to establish symbioses. We show that the coral host transcriptome remains almost unchanged during infection by competent symbionts, but is massively altered by symbionts that fail to establish symbioses. Our data suggest that successful coral-algal symbioses depend mainly on the symbionts' ability to enter the host in a stealth manner rather than a more active response from the coral host. Acropora palmata Samples: Three biological replicates of pooled larvae from each species and condition (i.e. untreated control, inoculated with competent Symbiodinium strain, inoculated with incompetent Symbiodinium strain) for both time points were hybridized against a pooled reference. Pooled references were constructed by combining equal amounts of aRNA from all control samples from A. palmata. References were labeled with Cy3, samples with Cy5. Montastraea faveolata Samples: Three biological replicates of pooled larvae from each species and condition (i.e. untreated control, inoculated with competent Symbiodinium strain, inoculated with incompetent Symbiodinium strain) for both time points were hybridized against a pooled reference. Pooled references were constructed by combining equal amounts of aRNA from all control samples from M. faveolata. References were labeled with Cy3, samples with Cy5. Symbiodinium sp. CassKB8: competent strain Symbiodinium sp. EL1: incompetent strain Symbiodinium sp. Mf1.05b: competent strain

2010-06-20 | E-GEOD-14923 | biostudies-arrayexpress

Sex, Scavengers, and Chaperones: Transcriptome Secrets of Divergent Symbiodinium Thermal Tolerances

Project description:Using transcriptomics, we show that Symbiodinium acclimation to elevated temperature involves up-regulated expression of meiosis genes followed by up-regulated expression of numerous reactive oxygen species scavenging genes and molecular chaperone genes. Our study connects Symbiodinium transcriptional regulation with physiological heat stress responses as well as known bleaching responses of corals harboring these same Symbiodinium. By uncovering these critical links, we greatly advance understanding of the bleaching susceptibility of corals, which is a key process responsible for global coral reef health.

2016-06-08 | GSE72763 | GEO

Evidence for a role of viruses in the thermal sensitivity of coral photosymbionts

Project description: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 thermo-sensitive and a thermo-tolerant 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 thermo-sensitive 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 antiviral 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 thermo-sensitive population. Our findings reveal that viruses infecting Symbiodinium are affected by heat stress and may contribute to Symbiodinium thermal sensitivity.

2016-09-28 | GSE77911 | GEO

Chromosome-scale assembly of the Symbiodinium microadriaticum genome

Project description:Hi-C assisted genome assembly of the Symbiodinium microadriaticum genome

2021-02-12 | GSE152150 | GEO

Symbiodinium clade content drives host transcriptome more than thermal stress in the coral Montastraea faveolata

Project description:This SuperSeries is composed of the following subset Series: GSE12809: Symbiodinium clade content drives host transcriptome more than thermal stress in the coral Montastraea faveolata (part 1) GSE15253: Symbiodinium clade content drives host transcriptome more than thermal stress in the coral Montastraea faveolata (part 2) Refer to individual Series

2010-05-18 | E-GEOD-15262 | biostudies-arrayexpress

The transcriptomic response of the coral Acropora digitifera to a competent Symbiodinium strain: the symbiosome as an arrested early phagosome

Project description:Despite the ecological significance of the relationship between reef-building corals and intracellular photosynthetic dinoflagellates of the genus Symbiodinium, very little is known about the molecular mechanisms involved in the establishment of the relationship. Indeed, microarray-based analyses point to the conclusion that host gene expression is largely or completely unresponsive during the establishment of symbiosis with a competent strain of Symbiodinium. In the present study, the use of Illumina RNAseq technology allowed detection of a transient period of differential expression involving a small number of genes (1073 transcripts; <3% of the transcriptome) 4h after the exposure of Acropora digitifera planulae to a competent strain of Symbiodinium (a clade B strain). This phenomenon has not previously been detected as a consequence of both the lower sensitivity of the microarray approaches used and the sampling times used. The results imply that complex changes occur, including transient suppression of mitochondrial metabolism and protein synthesis, but are also consistent with the hypothesis that the symbiosome is a phagosome that has undergone early arrest, raising the possibility of common mechanisms in the symbiotic interactions of corals and symbiotic sea anemones with their endosymbionts. There were 2 conditions (Symbiodinium-infected and control). Samples were taken at 3 time points, there were 3 replicates per condition. 16 samples were analysed comparing the Symbiodinium-infected samples to the control ones

2016-04-03 | E-GEOD-76976 | biostudies-arrayexpress

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