CENTER for DARK ENERGY BIOSPHERE INVESTIGATIONS
Menu
  • About
    • Introduction
    • People
    • Spotlight
    • Ethics Policy
    • Data Access & Policy
    • Executive Documents
    • C-DEBI Branded Resources
    • Support C-DEBI
    • Contact Us
  • Research
    • Overview
    • Research Themes
    • Field Sites
    • Facilities, Equipment & Technology
    • Research Support
      • Research Grants
      • Graduate Fellowships
      • Postdoctoral Fellowships
      • Research Exchanges
      • Community Workshops
      • Funded Projects
  • Education
    • Overview
    • For Teachers
    • For High School Students
    • For Undergraduates
      • Overview
      • GEM Summer Course
      • C4 Research Experience
      • CC-RISE Research Internship
      • GGURE Research Experience
      • Partnering Organizations
    • For Graduates & Postdocs
    • For Everyone
    • Education Grants
  • Resources
    • Peer-Reviewed Publications
    • Project Data
    • Protocols
    • Subseafloor Cultures Database
    • Videos
    • Mailing List & Newsletter
    • Meetings & Workshops
    • Networked Speaker Series
    • Professional Development Webinars
    • How to Get Deep Biosphere Samples

Person: Tracy Mincer

Order
Date Desc
Date Asc
Title Asc
Title Desc
Awards > Research Grants
Award Dates: September 1, 2014 — August 31, 2015
Microbial activity in oxygenated subseafloor sediment
PI: William D. Orsi (Woods Hole Oceanographic Institution)
Current Placement: Visiting Investigator, WHOI, 2013-; Assistant Research Scientist (Postdoc), UMCES, 2013-, ‘Assistant’ Professor, University of Munich (LMU), 2015/2016-
Co-I: Tracy Mincer (Woods Hole Oceanographic Institution)
Awards > Research Grants
Microbial activity in oxygenated subseafloor sediment
PI: William D. Orsi (Woods Hole Oceanographic Institution)
Current Placement: Visiting Investigator, WHOI, 2013-; Assistant Research Scientist (Postdoc), UMCES, 2013-, ‘Assistant’ Professor, University of Munich (LMU), 2015/2016-
Co-I: Tracy Mincer (Woods Hole Oceanographic Institution)
Amount: $50,000.00
Award Dates: September 1, 2014 — August 31, 2015

Abstract

The purpose of this project was to apply metatranscriptomic methods to North Atlantic pelagic clay sediment, in order to better understand the microbial activities in this habitat.  Deep-sea pelagic clays contain extremely low organic matter and oxygen penetrates deeply into the sediment, which should be the major high-energy electron acceptor supporting microbial life.  However, cell counts in pelagic clays are relatively low suggesting they are limited by availability of electron donors (e.g., organic matter).  In contrast, organic rich yet oxidant limited continental margin sediment has much higher cell abundances.  This project has produced new metatranscriptomes in electron donor limited pelagic clays from two sites in the North Atlantic, which are being compared to existing metatranscriptomic data from oxidant limited Peru Margin sediment.  Metatranscriptomes from one hole have been sequenced and preliminary analysis indicates active DNA repair, energy production, and organic matter degradation by the in situ microbial communities.  These data are currently being analyzed in greater detail, and funds are being sought to sequence the metatranscriptome libraries from a second hole, which will strengthen the conclusions. The results will be compared to metatranscriptomes from oxidant limited Peru Margin, in order to better understand subseafloor microbial adaptations and activities under electron donor versus oxidant limitation.

Related Items

Publications
Publications > Journal Article
Published: March 16, 2015
Frontiers in Microbiology
The transcriptional response of microbial communities in thawing Alaskan permafrost soils
Authors: Marco J. L. Coolen, William D. Orsi
C-DEBI Contribution Number: 258
Publications > Journal Article
Published: March 1, 2016
Environmental Microbiology Reports
Transcriptional analysis of sulfate reducing and chemolithoautotrophic sulfur oxidizing bacteria in the deep subseafloor
Authors: William D. Orsi, Bo Barker Jørgensen, Jennifer F. Biddle
C-DEBI Contribution Number: 318

About C-DEBI  |  Our Research  |  Education & Outreach  |  Resources  |
Contact Us  |  Join Our Mailing List  |  Find Us On Facebook  |  Follow us on Twitter
© 2009-2019 Center for Dark Energy Biosphere Investigations (C-DEBI)

SUPPORT C-DEBI TODAY |  National Science Foundation