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ABSTRACT: marine sponge and seawater metagenomes

PROVIDER: PRJNA318959 | ENA |

REPOSITORIES: ENA

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			Action	DRS
		Other
	SRR3473501_1.fastq.gz	Fastqsanger.gz
	SRR3473501_2.fastq.gz	Fastqsanger.gz
	SRR3473948_1.fastq.gz	Fastqsanger.gz
	SRR3473948_2.fastq.gz	Fastqsanger.gz

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Marine sponge metagenomes

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Complete metabolic reconstruction of the microbiome of the model sponge Ianthella basta

Project description:Marine sponges are essential for coral reefs to thrive and harbour a diverse microbiome that is thought to contribute to host health. Although the overall function of sponge symbionts has been increasingly described, in-depth characterisation of each taxa remains challenging, with many sponge species hosting up to 3,000 distinct microbial species. Recently, the sponge Ianthella basta has emerged as a model organism for symbiosis research, hosting only three dominant symbionts: a Thaumarchaeotum, a Gammaproteobacterium, and an Alphaproteobacterium and a range of other minor taxa. Here, we retrieved metagenome assembled genomes (MAGs) for >90% of I. basta’s microbial community which allowed us to make a complete metabolic reconstruction of the sponge’s microbiome, identifying metabolic complementarity between microbes, as well as the importance of symbionts present in low abundance. We also mined the metagenomes for putative viral sequences, highlighting the contribution of viruses to the overall metabolism of the sponge, and complement this data with metaproteomic sequencing to identify active metabolic pathways in both prokaryotes and viruses. This data now allows us to use I. basta as a model organism for studying host-microbe interactions and provides a basis for future (genomic) manipulative experiments.

2023-02-24 | PXD032278 | Pride

marine metagenome

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Project description:The marine teleost intestine plays a vital role in whole body salt and water homeostasis. Marine fish must drink seawater in order to rehydrate, and processing of that seawater throughout the gastrointestinal tract allows for the extraction of water from this highly hyperosmotic source. Although the molecular mechanisms of this process have been the subject of much investigation, numerous questions remain. Here, Gulf toadfish (Opsanus beta) were acclimated to normal seawater (35 ppt) of hypersaline seawater (60 ppt) and changes in the anterior intestine, posterior intestine, and intestinal fluid proteomes were investigated using a shotgun proteomics approach employing isobaric TMT tags.

2018-06-26 | PXD005923 | Pride

Marine sponge-Halichondria panicea

Project description:Marine sponge-Halichondria panicea + seawater Raw sequence reads

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Project description:Antarctic sponge metagenomes

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Project description:Caribbean Agelas sponge metagenomes

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Increased cellular detoxification, cytoskeletal activities and protein transport explain physiological stress in a lagoon sponge

Project description:Tropical lagoon-inhabiting organisms live in highly irradiated ecosystems and are particularly susceptible to thermal stress resulting from climate change. However, despite living close to their thermal maxima, stress response mechanisms found in these organisms are poorly understood. We used a novel physiological-proteomic approach for sponges to describe the stress response mechanisms of the lagoon-inhabiting sponge Amphimedon navalis, when exposed to elevated seawater temperatures of +2 oC and +4 oC relative to a 26 oC ambient temperature for four weeks. After four weeks of thermal exposure, the buoyant weight of the sponge experienced a significant decline, while its pumping rates and oxygen consumption rates significantly increased. Proteome dynamics revealed 50 differentially abundant proteins in sponges exposed to elevated temperature, suggesting that shifts in the sponge proteome were potential drivers of physiological dysfunction. Thermal stress promoted an increase in detoxification proteins, such as catalase and glutathione-S-transferase, suggesting that an excess of reactive oxygen species in sponge cells were likely responsible for the significant increase in oxygen consumption. Elevated temperature also disrupted cellular growth and cell proliferation, promoting the loss of sponge biomass, and the high abundance of multiple alpha-tubulin chain proteins also indicated an increase in cytoskeletal activities within sponge cells, which may have induced the increase in sponge pumping rate. Our results show that sustained thermal exposure in susceptible lagoonal sponges may induce significant disruption of cellular homeostasis leading to physiological dysfunction, and that a combined physiological-proteomic approach may provide new insights into physiological functions and cellular processes occurring in sponges.

2021-11-15 | PXD027246 | Pride

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