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

Undecompressed microbial populations from the deep sea

H J Jannasch, C O Wirsen, C D Taylor

    Applied and Environmental Microbiology
    |September 1, 1976
    PubMed
    Summary

    Deep-sea microbes show limited metabolic activity and substrate utilization, even when pressure is maintained. Their growth is pressure-tolerant rather than pressure-dependent.

    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

    Angle-of-incidence performance of random anti-reflection structures on curved surfaces.

    Applied optics·2016
    Same author

    Multiphysics modelling, quantum chemistry and risk analysis for corrosion inhibitor design and lifetime prediction.

    Faraday discussions·2015
    Same author

    Microbial transformations of some(14)C-labeled substrates in coastal water and sediment.

    Microbial ecology·2013
    Same author

    Tractor overturn concerns in Iowa: perspectives from the Keokuk county rural health study.

    Journal of agricultural safety and health·2006
    Same author

    Unexpected diversity of bacteria capable of carbon monoxide oxidation in a coastal marine environment, and contribution of the Roseobacter-associated clade to total CO oxidation.

    Applied and environmental microbiology·2006
    Same author

    Isolation and characterization of novel psychrophilic, neutrophilic, Fe-oxidizing, chemolithoautotrophic alpha- and gamma-proteobacteria from the deep sea.

    Applied and environmental microbiology·2003

    Area of Science:

    • Microbiology
    • Deep-sea Ecology
    • Biogeochemistry

    Background:

    • Deep-sea microbial communities play crucial roles in nutrient cycling.
    • Understanding their metabolic processes under high pressure is essential for deep-sea ecosystem research.

    Purpose of the Study:

    • To investigate the metabolic transformations of glutamate and Casamino Acids by deep-sea microbial populations.
    • To determine the effects of decompression on microbial metabolic activity and substrate utilization.

    Main Methods:

    • Utilized pressure-retaining sampling and incubation vessels for time-course experiments.
    • Compared metabolic activity in undecompressed (in situ pressure) and decompressed (1 atm) samples.
    • Assessed substrate incorporation into cell material and respiration rates.

    Main Results:

    • Metabolic activity was lower in undecompressed samples compared to 1 atm incubations.
    • Substrate incorporation into biomass was more sensitive to pressure changes than respiration.
    • Confirmed low substrate utilization, characterized by an initial low-activity phase followed by a stationary phase.
    • Observed barotolerance, not barophilic growth, in all microbial populations.

    Conclusions:

    • Deep-sea microbial metabolism is significantly impacted by pressure changes.
    • Substrate utilization by deep-sea microbes is a slow process, with limited incorporation into biomass.
    • Microbial communities in deep waters exhibit pressure tolerance rather than pressure-dependent growth.

    Related Experiment Videos