Subsurface metagenome
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA273865 | ENA |
REPOSITORIES: ENA
Similar Datasets
Project description:Deep subsurface microbial communities from Mt. Terri, Switzerland - Autotrophic microbial communities BRH/5 Metagenome
| PRJNA276306 | ENA
Project description:Deep subsurface microbial communities from Mt. Terri, Switzerland - Autotrophic microbial communities BRH/17 Metagenome
| PRJNA276304 | ENA
Project description:Deep subsurface microbial communities from Mt. Terri, Switzerland - Autotrophic microbial communities BRH/21 Metagenome
| PRJNA276303 | ENA
Project description:Deep subsurface microbial communities from Mt. Terri, Switzerland - Autotrophic microbial communities BRH/23 Metagenome
| PRJNA276302 | ENA
Project description:Deep subsurface microbial communities from Mt. Terri, Switzerland - Autotrophic microbial communities BRH/9 Metagenome
| PRJNA276305 | ENA
Project description:Deep subsurface microbial communities from Mt. Terri, Switzerland - Autotrophic microbial communities BRH/37_all Metagenome
| PRJNA276301 | ENA
Project description:Geothermal fumarole subsurface microbial communities from Mt. Erebus, Antarctica
| PRJNA431961 | ENA
Project description:Serpentinite rock and fluid subsurface biosphere microbial communities from McLaughlin Reserve, California, USA - itags
| PRJNA289273 | ENA
Project description:This project aims to investigate the metabolic pathways expressed by the active microbial community occurring at the deep continental subsurface. Subsurface chemoLithoautotrophic Microbial Ecosystems (SLiMEs) under oligotrophic conditions are supported by H2; however, the overall ecological trophic structures of these communities are poorly understood. Some deep, fluid-filled fractures in the Witwatersrand Basin, South Africa appear to support inverted trophic pyramids wherein methanogens contributing <5% of the total DNA apparently produce CH4 that supports the rest of the community. Here we show the active metabolic relationships of one such trophic structure by combining metatranscriptomic assemblies, metaproteomic and stable isotopic data, and thermodynamic modeling. Four autotrophic β-proteobacteria genera that are capable of oxidizing sulfur by denitrification dominate. They co-occur with sulfate reducers, anaerobic methane oxidizers and methanogens, which each comprises <5% of the total community. Defining trophic levels of microbial chemolithoautotrophs by the number of transfers from the initial abiotic H2-driven CO2 fixation, we propose a top-down cascade influence of the metabolic consumers that enhances the fitness of the metabolic producers to explain the inverted biomass pyramid of a multitrophic SLiME. Symbiotic partnerships are pivotal in the deep biosphere on and potentially beyond the Earth.
2018-10-27 | PXD004634 | Pride
Project description:Members of the bacterial phylum Spirochaetes are primarily studied for their commensal and pathogenic roles in animal hosts. However, Spirochaetes are also frequently detected in anoxic hydrocarbon-contaminated environments but their ecological role in such ecosystems has so far remained unclear. Here we provide a functional trait to these frequently detected organisms with an example of a sulfate-reducing, naphthalene-degrading enrichment culture consisting of a sulfate-reducing deltaproteobacterium Desulfobacterium naphthalenivorans and a novel spirochete Rectinema cohabitans. Using a combination of genomic, proteomic, and physiological studies we show that R. cohabitans grows by fermentation of organic compounds derived from biomass from dead cells (necromass). It recycles the derived electrons in the form of H2 to the sulfate-reducing D. naphthalenivorans, thereby supporting naphthalene degradation and forming a simple microbial loop. We provide metagenomic evidence that equivalent associations between Spirochaetes and hydrocarbon-degrading microorganisms are of general importance in hydrocarbon- and organohalide-contaminated ecosystems. We propose that environmental Spirochaetes form a critical component of a microbial loop central to nutrient cycling in subsurface environments. This emphasizes the importance of necromass and H2-cycling in highly toxic contaminated subsurface habitats such as hydrocarbon-polluted aquifers.
2018-05-17 | PXD005624 | Pride