Evidence for Microbial Carbon and Sulfur Cycling in Deeply Buried Ridge Flank Basalt

Type Article
Date 2013-03
Language English
Author(s) Lever Mark A.1, 2, Rouxel OlivierORCID3, 4, Alt Jeffrey C.5, Shimizu Nobumichi3, Ono Shuhei6, Coggon Rosalind M.7, Shanks Wayne C., Iii8, Lapham Laura2, Elvert Marcus9, 10, Prieto-Mollar Xavier9, 10, Hinrichs Kai-Uwe9, 10, Inagaki Fumio11, Teske Andreas1
Affiliation(s) 1 : Univ N Carolina, Dept Marine Sci, Chapel Hill, NC 27599 USA.
2 : Aarhus Univ, Dept Biosci, Ctr Geomicrobiol, DK-8000 Aarhus C, Denmark.
3 : Woods Hole Oceanog Inst, Woods Hole, MA 02543 USA.
4 : IFREMER, Ctr Brest, F-29280 Plouzane, France.
5 : Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA.
6 : MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA.
7 : Univ London Imperial Coll Sci Technol & Med, Dept Earth Sci & Engn, London SW7 2AZ, England.
8 : US Geol Survey, Denver, CO 80225 USA.
9 : Univ Bremen, Dept Geosci, Organ Geochem Grp, D-28334 Bremen, Germany.
10 : Univ Bremen, MARUM Ctr Marine Environm Sci, D-28334 Bremen, Germany.
11 : Japan Agcy Marine Earth Sci & Technol, Kochi Inst Core Sample Res, Geomicrobiol Grp, Nanko Ku, Kochi 7838502, Japan.
Source Science (0036-8075) (Amer Assoc Advancement Science), 2013-03 , Vol. 339 , N. 6125 , P. 1305-1308
DOI 10.1126/science.1229240
WOS© Times Cited 119
Abstract Sediment-covered basalt on the flanks of mid-ocean ridges constitutes most of Earth's oceanic crust, but the composition and metabolic function of its microbial ecosystem are largely unknown. By drilling into 3.5-million-year-old subseafloor basalt, we demonstrated the presence of methane-and sulfur-cycling microbes on the eastern flank of the Juan de Fuca Ridge. Depth horizons with functional genes indicative of methane-cycling and sulfate-reducing microorganisms are enriched in solid-phase sulfur and total organic carbon, host delta C-13- and delta S-34-isotopic values with a biological imprint, and show clear signs of microbial activity when incubated in the laboratory. Downcore changes in carbon and sulfur cycling show discrete geochemical intervals with chemoautotrophic delta C-13 signatures locally attenuated by heterotrophic metabolism.
Full Text
File Pages Size Access
4 891 KB Access on demand
Author's final draft 46 2 MB Open access
Top of the page

How to cite 

Lever Mark A., Rouxel Olivier, Alt Jeffrey C., Shimizu Nobumichi, Ono Shuhei, Coggon Rosalind M., Shanks Wayne C., Iii, Lapham Laura, Elvert Marcus, Prieto-Mollar Xavier, Hinrichs Kai-Uwe, Inagaki Fumio, Teske Andreas (2013). Evidence for Microbial Carbon and Sulfur Cycling in Deeply Buried Ridge Flank Basalt. Science, 339(6125), 1305-1308. Publisher's official version : https://doi.org/10.1126/science.1229240 , Open Access version : https://archimer.ifremer.fr/doc/00176/28767/