Hydrogen is an energy source for hydrothermal vent symbioses

  title={Hydrogen is an energy source for hydrothermal vent symbioses},
  author={Jillian M. Petersen and Frank U. Zielinski and Thomas Pape and Richard P. Seifert and Cristina Moraru and Rudolf I. Amann and St{\'e}phane Hourdez and Peter R. Girguis and Scott D. Wankel and Val{\'e}rie Barbe and {\'E}ric Pelletier and Dennis Fink and Christian Borowski and Wolfgang Bach and Nicole Dubilier},
The discovery of deep-sea hydrothermal vents in 1977 revolutionized our understanding of the energy sources that fuel primary productivity on Earth. Hydrothermal vent ecosystems are dominated by animals that live in symbiosis with chemosynthetic bacteria. So far, only two energy sources have been shown to power chemosynthetic symbioses: reduced sulphur compounds and methane. Using metagenome sequencing, single-gene fluorescence in situ hybridization, immunohistochemistry, shipboard incubations… 

Microbially Mediated Hydrogen Cycling in Deep-Sea Hydrothermal Vents

The advent of new techniques for the identification of novel hydrogen-uptake and -evolving enzymes from hydrothermal vent microorganisms from hydrogen-oxidizing microorganisms are discussed.

Diversity and metabolism of prokaryotic chemoautotrophs and their interactions with deep-sea hydrothermal environments

  • Z. Shao
  • Environmental Science
    Chinese Science Bulletin
  • 2018
The deep sea hydrothermal vent ecosystem was first discovered in 1977 at East Pacific Rise (EPR) near the Galapagos Islands. In the past decades, over 640 hydrothermal vent sites have been found in

Microorganisms from deep-sea hydrothermal vents

The taxonomic and physiological diversity of microbial prokaryotic life from cosmopolitan to endemic taxa are reviewed and emphasized and their significant roles in the biogeochemical processes in deep-sea hydrothermal vents are emphasized.

Origins and Evolutionary Flexibility of Chemosynthetic Symbionts From Deep-Sea Animals

The phylogenetic analyses of the bathymodiolin symbionts show that both the sulfur and the methane oxidizers fall into multiple clades interspersed with free-living bacteria, many of which were discovered recently in metagenomes from marine oxygen minimum zones.

The microbiomes of deep-sea hydrothermal vents: distributed globally, shaped locally

  • G. Dick
  • Environmental Science
    Nature Reviews Microbiology
  • 2019
The challenges and opportunities that vent ecosystems provide for microbial life and their relationship to biogeography are explored, including their relationships with underlying geology and hydrothermal geochemistry.

Hydrothermal activity, functional diversity and chemoautotrophy are major drivers of seafloor carbon cycling

A quantitative ecosystem model of a deep-sea chemosynthetic ecosystem from the most southerly hydrothermal vent system known is developed and evidence of chemosynthesis production supplementing the metazoan food web both at vent sites and elsewhere in the Bransfield Strait is found.

Hydrogen Does Not Appear To Be a Major Electron Donor for Symbiosis with the Deep-Sea Hydrothermal Vent Tubeworm Riftia pachyptila

Despite the presence of hydrogenase genes, transcripts, and proteins in the “Ca. Endoriftia persephone” genome, transcriptome, and proteome, it does not appear that R. pachyptila can use H2 as a major electron donor for this system, and it may instead play a role in intracellular redox homeostasis.

Metagenomic Signatures of Microbial Communities in Deep-Sea Hydrothermal Sediments of Azores Vent Fields

The organisms inhabiting the deep-seafloor are known to play a crucial role in global biogeochemical cycles. Chemolithoautotrophic prokaryotes, which produce biomass from single carbon molecules,

Metatranscriptomics reveal differences in in situ energy and nitrogen metabolism among hydrothermal vent snail symbionts

A novel, in situ RNA sampling and preservation device is presented, which is used to compare the symbiont metatranscriptomes associated with Alviniconcha, a genus of vent snail, in which specific host–symbiont combinations are predictably distributed across a regional geochemical gradient.



Methanotrophic symbioses in marine invertebrates.

This review presents an overview of the habitats and invertebrate hosts in which symbiotic methane oxidizers have been found, and the methods used to investigate these symbioses, focusing on the symbioes of bathymodiolin mussels that have received the most attention among methanotrophic associations.

Pathways of Carbon and Energy Metabolism of the Epibiotic Community Associated with the Deep-Sea Hydrothermal Vent Shrimp Rimicaris exoculata

The data suggest that autotrophic carbon fixation is contributing to the productivity of the epibiotic community with the reductive tricarboxylic acid cycle as one important carbon fixation pathway.

The gill symbiont of the hydrothermal vent mussel Bathymodiolus thermophilus is a psychrophilic, chemoautotrophic, sulfur bacterium

The current study confirms that the B. thermophilus symbiont is a psychrophile for which thiosulfate and sulfide stimulate CO2 fixation and strongly indicates that the symbionT is a chemoautotroph by establishing the following.

Symbiosis of methylotrophic bacteria and deep-sea mussels

Recently, dense assemblages of seep mussels and other benthic invertebrates resembling hydrothermal vent communities were found associated with reducing sediments at hypersaline seeps in the abyssal

CH4, H2, CO and N2O in submarine hydrothermal vent waters

Hydrothermal circulation systems of mid-ocean ridges profoundly influence the chemistry of the oceans and the oceanic crust1–3. This has been demonstrated for several major and minor constituents of

Influence of subsurface biosphere on geochemical fluxes from diffuse hydrothermal fluids

Hydrothermal vents along mid-ocean systems host unique, highly productive biological communities, based on microbial chemoautotrophy, that thrive on the sulphur, metals, nitrogen and carbon emitted

Dual symbiosis of the vent shrimp Rimicaris exoculata with filamentous gamma- and epsilonproteobacteria at four Mid-Atlantic Ridge hydrothermal vent fields.

It is hypothesized that biogeography and host-symbiont selectivity play a role in structuring the epibiosis of R. exoculata, indicating that the symbiosis is highly stable and specific.

A Methanotrophic Marine Molluscan (Bivalvia, Mytilidae) Symbiosis: Mussels Fueled by Gas

An undescribed mussel (family Mytilidae), which lives in the vicinity of hydrocarbon seeps in the Gulf of Mexico, consumes methane (the principal component of natural gas) at a high rate, demonstrating a methane-based symbiosis between an animal and intracellular bacteria.

Symbiotic diversity in marine animals: the art of harnessing chemosynthesis

The diversity of chemosynthetic symbionts and their hosts is focused on, and phylogenetic analyses have shown that these associations have evolved on multiple occasions by convergent evolution.

Geochemical constraints on the diversity and activity of H2 -oxidizing microorganisms in diffuse hydrothermal fluids from a basalt- and an ultramafic-hosted vent.

The influence of fluid chemistry on microbial diversity and activity by sampling diffuse fluids emanating through mussel beds at two contrasting hydrothermal vents is examined, and it is concluded that the factors contributing toward differences in the Diversity and activity of H(2) oxidizers at these sites include H( 2) and O(2), availability.