Global dispersion and local diversification of the methane seep microbiome

Proceedings of the National Academy of Sciences of the United States of America
S Emil RuffAlban Ramette

Abstract

Methane seeps are widespread seafloor ecosystems shaped by the emission of gas from seabed reservoirs. The microorganisms inhabiting methane seeps transform the chemical energy in methane to products that sustain rich benthic communities around the gas leaks. Despite the biogeochemical relevance of microbial methane removal at seeps, the global diversity and dispersion of seep microbiota remain unknown. Here we determined the microbial diversity and community structure of 23 globally distributed methane seeps and compared these to the microbial communities of 54 other seafloor ecosystems, including sulfate-methane transition zones, hydrothermal vents, coastal sediments, and deep-sea surface and subsurface sediments. We found that methane seep communities show moderate levels of microbial richness compared with other seafloor ecosystems and harbor distinct bacterial and archaeal taxa with cosmopolitan distribution and key biogeochemical functions. The high relative sequence abundance of ANME (anaerobic methanotrophic archaea), as well as aerobic Methylococcales, sulfate-reducing Desulfobacterales, and sulfide-oxidizing Thiotrichales, matches the most favorable microbial metabolisms at methane seeps in terms of substrate supply a...Continue Reading

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Citations

Feb 10, 2016·Frontiers in Microbiology·Frederick DowellAndreas Teske
Jun 9, 2015·Applied Microbiology and Biotechnology·Ludmila Chistoserdova
Jul 6, 2016·Frontiers in Microbiology·Donato GiovannelliElena Manini
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Jan 28, 2016·PloS One·Christina BienholdAlban Ramette
Jun 3, 2017·The ISME Journal·Esther SingerTanja Woyke
Nov 24, 2017·Scientific Reports·Adrien VigneronNicolas Tsesmetzis
Sep 28, 2017·The ISME Journal·Clemens KarwautzTillmann Lueders
Feb 13, 2016·The ISME Journal·Stefan DyksmaMarc Mußmann
Nov 22, 2017·Ecology·Mallory J ChoudoirNoah Fierer
Aug 30, 2018·The ISME Journal·S E RuffA Boetius
Jun 21, 2017·Journal of Bacteriology·Zheng Yu, Ludmila Chistoserdova
Jan 24, 2018·Scientific Reports·Matthias WinkelSusanne Liebner
Sep 27, 2019·Canadian Journal of Microbiology·Guðný Vala ÞorsteinsdóttirOddur Vilhelmsson

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