Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Anaerobic bacteria from hypersaline environments

B Ollivier1, P Caumette, J L Garcia

  • 1Laboratoire de Microbiologie ORSTOM, Université de Provence, Marseille, France.

Microbiological Reviews
|March 1, 1994
PubMed
Summary

Anaerobic bacteria like fermentative, sulfate-reducing, and phototrophic microbes oxidize organic carbon in hypersaline environments. Methanogenesis is limited at high salt concentrations, with sulfate reduction becoming dominant.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dysfunction of proprioceptive sensory synapses is a pathogenic event and therapeutic target in mice and humans with spinal muscular atrophy.

medRxiv : the preprint server for health sciences·2024
Same author

Genomic landscape and immune-related gene expression profiling of epithelial ovarian cancer after neoadjuvant chemotherapy.

NPJ precision oncology·2022
Same author

Author Correction: Ancient DNA of Guinea Pigs (Cavia spp.) Indicates a Probable New Center of Domestication and Pathways of Global Distribution.

Scientific reports·2020
Same author

Ancient DNA of Guinea Pigs (Cavia spp.) Indicates a Probable New Center of Domestication and Pathways of Global Distribution.

Scientific reports·2020
Same author

Comment on: Clinicopathological features and oncological outcomes of patients with young-onset rectal cancer.

The British journal of surgery·2020
Same author

Author Correction: Combination of KIR2DS4 and FcγRIIa polymorphisms predicts the response to cetuximab in KRAS mutant metastatic colorectal cancer.

Scientific reports·2019

Area of Science:

  • Microbiology
  • Environmental Science
  • Biochemistry

Background:

  • Hypersaline environments host diverse strictly anaerobic halophilic bacteria crucial for organic carbon oxidation.
  • These include fermentative, sulfate-reducing, homoacetogenic, phototrophic, and methanogenic bacteria.

Purpose of the Study:

  • To review the diversity and roles of anaerobic halophilic bacteria in hypersaline environments.
  • To detail the specific genera, species, and metabolic functions within these extreme ecosystems.

Main Methods:

  • Literature review and analysis of existing studies on anaerobic halophiles.
  • Identification based on 16S rRNA sequences and optimal growth conditions (salinity, substrates).

Main Results:

Related Experiment Videos

  • Nine species across six fermentative genera (two homoacetogens) are described, with six in Haloanaerobiaceae.
  • Two moderately halophilic sulfate reducers (Desulfohalobium retbaense, Desulfovibrio halophilus) are reported.
  • Phototrophic bacteria (purple bacteria) thrive at 6-11% NaCl (Rhodospirillum, Chromatium, Thiocapsa) and 20-25% NaCl (Ectothiorodhospiraceae), utilizing compatible solutes for osmoregulation.
  • Methanogenesis is limited above 15% NaCl, with sulfate reduction dominating organic carbon oxidation at higher salinities.

Conclusions:

  • Anaerobic halophiles play significant roles in carbon cycling in hypersaline environments.
  • Specific bacterial groups dominate at different salinity levels, with distinct metabolic strategies.
  • Sulfate reduction becomes a key terminal process at very high salinities, while methanogenesis is restricted.