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Deep-sea vent substrates sequencing for reconstruction of microbial biogeography

ABSTRACT: deep-sea vent substrates sequencing for reconstruction of microbial biogeography

PROVIDER: PRJEB34148 | ENA |

REPOSITORIES: ENA

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Dissolved organic carbon compounds in deep-sea hydrothermal vent fluids from the East Pacific Rise at 9°50′N

Project description:<p>Deep-sea hydrothermal vents are unique ecosystems that may release chemically distinct dissolved organic matter to the deep ocean. Here, we describe the composition and concentrations of polar dissolved organic compounds observed in low and high temperature hydrothermal vent fluids at 9°50′N on the East Pacific Rise. The concentration of dissolved organic carbon was 46 µM in the low temperature hydrothermal fluids and 14 µM in the high temperature hydrothermal fluids. In the low temperature vent fluids, quantifiable dissolved organic compounds were dominated by water-soluble vitamins and amino acids. Derivatives of benzoic acid and the organic sulfur compound 2,3-dihydroxypropane-1-sulfonate (DHPS) were also present in low and high temperature hydrothermal fluids. The low temperature vent fluids contain organic compounds that are central to biological processes, suggesting that they are a by-product of biological activity in the subseafloor. These compounds may fuel heterotrophic and other metabolic processes at deep-sea hydrothermal vents and beyond.</p>

2017-05-23 | MTBLS428 | MetaboLights

The discovery of new deep-sea hydrothermal vent communities in the southern ocean and implications for biogeography.

Project description: Not available

| S-EPMC3250512 | biostudies-literature

Deep-sea hydrothermal vent associated microbial community

Project description:Metagenomic Studies of Deep-sea hydrothermal vent associated microbial community

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Biogeography of the human colorectum

Project description:We applied numerical ecology methods to data produced with a human intestinal tract-specific phylogenetic microarray (the Aus-HIT Chip) to examine the biogeography of mucosa-associated bacteria along the human colon. The microbial DNA associated with matched biopsy tissue samples taken from the cecum, transverse colon, sigmoid colon and rectum of 10 healthy patients was examined. Consistent with previous studies, the profiles revealed a marked inter-subject variability; however, the numerical ecology methods of analysis allowed the subtraction of the subject effect from the data and revealed, for the first time, evidence of a longitudinal gradient for specific microbes along the colorectum: with Streptococcus, Comamonadaceae, Enterococcus and Lactobacillus in greatest abundance at the cecum, with a gradual decline in their relative abundance through to the rectum. Conversely, the analyses suggest that members of the Enterobacteriaceae increase in relative abundance towards the rectum. These differences were validated by quantitative PCR. We were also able to identify significant differences in the profiles, especially for the Streptococci, on the basis of gender. The results derived by these multivariate analyses are biologically intuitive, and suggestive that the biogeography of the colonic mucosa can be monitored for changes via cross-sectional and/or inception cohort studies. 10 patients, 5 males and 5 females. Four different locations along the colorectum.

2010-05-07 | E-GEOD-18933 | biostudies-arrayexpress

Biogeography of the human colorectum

2010-03-01 | GSE18933 | GEO

Genetic diversity of archaea in deep-sea hydrothermal vent environments.

Project description: Not available

| S-EPMC1460697 | biostudies-other

Co-expression analysis reveals distinct alliances around two carbon fixation pathways in hydrothermal vent symbionts

Project description:Biological carbon fixation is foundational to the biosphere. Most autotrophs are thought to possess one carbon fixation pathway. The hydrothermal vent tubeworm Riftia pachyptila’s chemoautotrophic symbionts, however, possess two functional pathways: the Calvin Benson-Bassham (CBB) and the reductive tricarboxylic acid (rTCA) cycles. Little is known about how Riftia’s symbionts and related organisms coordinate the functioning of these two pathways. Here we investigated net carbon fixation rates, transcriptional/metabolic responses, and transcriptional co-expression patterns of Riftia pachyptila’s endosymbionts by incubating tubeworms at environmental pressures, temperature, and geochemistry. Results showed that rTCA and CBB transcriptional patterns varied in response to different geochemical regimes and that each pathway is allied to specific metabolic processes, suggesting distinctive yet complementary roles in metabolic function. Net carbon fixation rates were also exemplary, and accordingly we propose that co-activity of CBB and rTCA may be an adaptation for maintaining high carbon fixation rates, conferring a fitness advantage in dynamic vent environments.

2024-03-28 | GSE249345 | GEO

Mercury adaptation among bacteria from a deep-sea hydrothermal vent.

Project description: Not available

| S-EPMC544242 | biostudies-literature

Astronomical and atmospheric impacts on deep-sea hydrothermal vent invertebrates.

Project description: Not available

| S-EPMC5394654 | biostudies-literature

Temporal gill transcriptome of the deep-sea mussel Bathymodiolus azoricus in situ and in the laboratory

Project description:The project was designed to explore biological rhythms in the hydrothermal vent mussel Bathymodiolus azoricus. The experiment provides the first high-resolution temporal transcriptomes of an hydrothermal species, both in situ and in the laboratory. For each condition, 5 mussels were sampled every 2h 4min for 24h 48min.

2020-06-12 | E-MTAB-8451 | biostudies-arrayexpress

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